18 Hasivim Street
Petach Tikva 4959376, Israel
Tel: +972 (74) 719-5700
(Address, including zip code, and telephone number, including
area code, of Registrant's principal executive offices)

PolyPid Inc.
The Atrium at 47 Maple Street
Suite 302A
Summit, NJ 07901
Telephone: (908) 378-9530
(Name, address, including zip code, and telephone number, including area code, of agent for service)

Approximate date of commencement of proposed sale to the public:
As soon as practicable after the effective date of this Registration Statement.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box. o

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933.

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. o

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until the Registration Statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), may determine.

The information in this preliminary prospectus is not complete and may be changed. These securities may not be sold until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell these securities, and we are not soliciting an offer to buy these securities, in any jurisdiction where an offer or sale is not permitted.

PolyPid Ltd. is offering ordinary shares. This is our initial public offering, and no public market currently exists for our ordinary shares. We anticipate that the initial public offering price will be between $ and $ .

We have applied to list our ordinary shares on The Nasdaq Global Market under the symbol "PYPD."

We are an "emerging growth company" as that term is used in the Jumpstart Our Business Startups Act of 2012 and, as such, have elected to comply with certain reduced public company reporting requirements for this prospectus and future filings.

Investing in our ordinary shares involves risks. See "Risk Factors" beginning on page 12.

The underwriters may also exercise their option to purchase up to an additional ordinary shares from us at the initial public offering price, less underwriting discounts and commissions, for 30 days after the date of this prospectus. Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of the securities being offered by this prospectus, or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

Neither we nor the underwriters have authorized anyone to provide you with information that is different from that contained in this prospectus, any amendment or supplement to this prospectus, or in any free writing prospectus we may authorize to be delivered or made available to you. Neither we nor the underwriters take responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We and the underwriters are offering to sell ordinary shares and seeking offers to purchase ordinary shares only in jurisdictions where offers and sales are permitted. The information contained in this prospectus is accurate only as of the date on the front of this prospectus, regardless of the time of delivery of this prospectus or any sale of ordinary shares. Our business, financial condition, results of operations and prospects may have changed since the date on the front cover of this prospectus.

Through and including , 2020 (the 25th day after the date of this prospectus), all dealers effecting transactions in these securities, whether or not participating in this offering, may be required to deliver a prospectus. This delivery requirement is in addition to a dealer's obligation to deliver a prospectus when acting as an underwriter and with respect to an unsold allotment or subscription.

Neither we nor any of the underwriters have taken any action to permit this offering or possession or distribution of this prospectus in any jurisdiction where action for that purpose is required, other than in the United States. You are required to inform yourselves about and to observe any restrictions relating to this offering and the distribution of this prospectus.

PolyPid and BonyPid are trademarks of ours that we use in this prospectus. This prospectus also includes trademarks, tradenames and service marks that are the property of other organizations. Solely for convenience, our trademarks and tradenames referred to in this prospectus appear without the ® or ™ symbols, but those references are not intended to indicate, in any way, that we will not assert,

to the fullest extent under applicable law, our rights, or the right of the applicable licensor to our trademark and tradenames.

The terms "shekel," "Israeli shekel" and "NIS" refer to New Israeli Shekels, the lawful currency of the State of Israel, and the terms "dollar," "U.S. dollar" or "$" refer to United States dollars, the lawful currency of the United States of America. All references to "shares" in this prospectus refer to ordinary shares of PolyPid Ltd., par value NIS 0.80 per share.

This prospectus contains estimates, projections and other information concerning our industry, our business, and the markets for our product candidates. Information that is based on estimates, forecasts, projections, market research or similar methodologies is inherently subject to uncertainties, and actual events or circumstances may differ materially from events and circumstances that are assumed in this information. Unless otherwise expressly stated, we obtained this industry, business, market and other data from our own internal estimates and research as well as from reports, research surveys, studies and similar data prepared by market research firms and other third parties, industry, medical and general publications, government data and similar sources. Life Science Intelligence, Inc., the primary source for our market opportunity data included in this prospectus, was commissioned by us to compile this information.

In addition, assumptions and estimates of our and our industry's future performance are necessarily subject to a high degree of uncertainty and risk due to a variety of factors, including those described in "Risk Factors." These and other factors could cause our future performance to differ materially from our assumptions and estimates. See "Special Note Regarding Forward-Looking Statements."

PROSPECTUS SUMMARY

This summary highlights selected information contained elsewhere in this prospectus and does not contain all of the information that you should consider in making your investment decision. Before deciding to invest in our ordinary shares, you should read this entire prospectus carefully, including the sections of this prospectus entitled "Risk Factors" and "Management's Discussion and Analysis of Financial Condition and Results of Operations" and our consolidated financial statements and the related notes included elsewhere in this prospectus. Unless the context otherwise requires, references in this prospectus to the "company," "PolyPid," "we," "us," "our" and other similar designations refer to PolyPid Ltd. and our subsidiary, PolyPid Inc.

Company Overview

We are a Phase 3 clinical-stage biopharmaceutical company focused on developing targeted, locally administered and prolonged-release therapeutics using our proprietary Polymer-Lipid Encapsulation matriX, or PLEX, technology. Our product candidates are designed to address diseases with high unmet medical needs by pairing our PLEX technology with drugs already approved by the U.S. Food and Drug Administration, or FDA. Our PLEX technology is designed to deliver drugs directly to precise sites in the body at predetermined release rates and over durations ranging from several days to several months. We believe that our PLEX technology and product candidates have the potential to cause a major shift in the management of a wide variety of localized medical conditions, including surgical site infections, or SSIs, cancer, inflammation and pain. Our lead product candidate, D-PLEX₁₀₀, is in a potentially pivotal Phase 3 clinical trial for the prevention of sternal (bone) SSIs. We also plan to initiate the first of two potentially pivotal Phase 3 trials of D-PLEX₁₀₀ for the prevention of abdominal (soft tissue) SSIs in the third quarter of 2020. We expect to report topline results from this trial at the end of 2021 and to initiate the second Phase 3 trial approximately six months after the initiation of the first trial. The World Health Organization, or WHO, estimates that SSIs result in up to $10 billion of additional hospital costs per year in the United States alone, and a further €11 billion per year in the European Union. We believe D-PLEX₁₀₀, if approved, would be a significant improvement over the current standard of care, which includes systemic administration of drugs.

We believe our PLEX technology has the potential to address many of the limitations of the current standard of care of systemic administration of drugs, resulting in significantly improved patient outcomes and lower overall cost of treatment by enabling targeted and local delivery of medications at predetermined and customizable release rates and duration. The systemic administration of drugs can have significant potential disadvantages for the treatment of localized medical conditions in the body, including limited efficacy due to poor local drug concentration, which often requires the use of a considerably higher quantity of drugs over a prolonged period of time and can result in substantial side effects.

D-PLEX pairs our novel, proprietary PLEX technology with doxycycline, a first-line, broad spectrum and FDA-approved antibiotic. In our clinical trials to date, patients treated with D-PLEX demonstrated a reduction in SSIs compared to patients treated with the standard of care alone. Our lead product candidate, D-PLEX₁₀₀, is currently in a potentially pivotal Phase 3 clinical trial for the prevention of SSIs in sternal (bone) surgeries, and we plan to initiate two potentially pivotal Phase 3 trials of D-PLEX₁₀₀ for the prevention of abdominal (soft tissue) SSIs. Infections resulting from surgery can be fatal and create a significant public health burden despite the extensive use of systemically administered antibiotics both pre- and post-operatively and other measures taken to reduce infection risk in the intra-operative setting. SSIs occur in approximately 2% to 5% of all patients undergoing inpatient surgery worldwide. The WHO and the Centers for Disease Control and Prevention have recently labeled SSIs as a high priority unmet medical need due to the associated morbidity, mortality and economic cost burden.

In October 2019, we reported topline data from our Phase 2 clinical trial of D-PLEX₁₀₀ for the prevention of SSIs in patients undergoing abdominal surgery. Patients treated with D-PLEX₁₀₀ and the standard of care had a statistically significant reduction of 59% (p=0.0086) in deep or superficial incisional SSIs or mortality for any reason within 30 days of surgery, which was the primary endpoint for the trial, as compared to patients who received the standard of care alone. In addition, there was a statistically significant difference (p=0.0290) in patient deaths within 60 days of surgery, with no deaths observed in the D-PLEX₁₀₀ treatment arm, as compared to five deaths observed in the standard-of-care arm. In this trial, D-PLEX₁₀₀ was observed to be generally well tolerated, with no confirmed drug-related serious adverse events, or SAEs, and did not increase wound healing impairment at the incision site as compared to the control arm.

In January 2018, we reported data from our Phase 1b/2 clinical trial of D-PLEX₁₀₀ for the prevention of sternal SSIs after cardiac surgery. None of the 58 patients treated with D-PLEX₁₀₀ and the standard of care had a primary sternal infection within 90 days post-surgery, which was the primary endpoint of the trial, as compared to one patient in the group treated with the standard of care alone, representing a 4.3% infection rate. In this trial, D-PLEX₁₀₀ was observed to be generally well tolerated, with no drug-related SAEs and no drug-related wound healing issues at the incision site.

In December 2019, we initiated a potentially pivotal Phase 3 clinical trial of D-PLEX₁₀₀ for the prevention of sternal (bone) SSIs, and we enrolled the first patient in February 2020. We expect to enroll between 1,200 and 1,600 cardiac surgery patients in the trial. We have paused enrollment in this trial due to the COVID-19 pandemic, but we have informed investigators that they should continue monitoring current patients per the trial protocol. Pending the availability of additional funding following this offering, we expect to resume enrollment when we believe it is safe to do so and anticipate conducting an interim analysis after a total of 850 patients have been assessed for the presence of at least one sternal wound infection or mortality for any reason within 90 days post-surgery. In February 2020, we held an end of Phase 2 meeting with the FDA to discuss our proposed potentially pivotal Phase 3 clinical trials of D-PLEX₁₀₀ for the prevention of abdominal (soft tissue) SSIs. We plan to initiate the first Phase 3 trial in this indication in the third quarter of 2020 and the second Phase 3 trial approximately six months after the initiation of the first trial. We expect to report topline results from the first trial at the end of 2021. We intend to pursue a broad label for D-PLEX₁₀₀ for the prevention of SSIs, the scope of which will depend on the clinical data generated from our Phase 3 clinical trials and discussions with the FDA and the European Medicines Agency, or the EMA.

We intend to seek approval of D-PLEX₁₀₀ under Section 505(b)(2) of the Federal Food, Drug and Cosmetic Act, or FFDCA, which provides an abbreviated pathway for marketing approval by the FDA in the United States, and will seek approval under the comparable hybrid application pathway in the European Union. Such abbreviated approval pathways may not lead to a faster development or review process compared to traditional approval pathways and do not increase the likelihood that D-PLEX₁₀₀ will receive regulatory approval in the United States or the European Union. We also received two Qualified Infectious Disease Product, or QIDP, designations from the FDA for D-PLEX₁₀₀ for the prevention of post-abdominal surgery incisional infection and for the prevention of sternal wound infection post-cardiac surgery. The QIDP designation from the FDA confers, among other benefits, a five-year extension to any period of non-patent exclusivity awarded upon approval, such as a three-year period of exclusivity for new clinical investigations of previously approved products, which we expect for D-PLEX₁₀₀, if approved. Additionally, in November 2018 we received Fast Track Designation from the FDA for D-PLEX₁₀₀ for prevention of sternal wound infections post-cardiac surgery, which could potentially expedite the FDA's review of D-PLEX₁₀₀ and enables early and frequent communication with the FDA as we continue to generate data from our ongoing and planned clinical trials.

predetermined amounts at the local site where it is administered. PLEX technology is designed to protect the embedded medication from the natural enzymes and other biochemicals in the body that would otherwise degrade or alter the drug. Over time, natural hydration in the body disintegrates the layers of PLEX, from the outer layer to the inner layers, which triggers a release of the medicine in an unmodified, active form. We believe that these characteristics may enable our PLEX product candidates to be efficacious using only a small fraction of the medicines required in systemic administration.

We believe our PLEX platform technology may have broad therapeutic application for other localized medical conditions. Because our PLEX technology is designed to be agnostic to the nature and size of the underlying drug, we believe it has the potential to be paired with a wide variety of currently marketed drugs or product candidates in development, including small molecules, peptides, antibodies and other proteins, as well as nucleic acid-based APIs, to create novel therapies in a broad range of locally delivered applications. We are pursuing research and development programs for our PLEX platform in a variety of other potential indications where we have identified a targeted active pharmaceutical ingredient, or API, for use with our PLEX technology, including for the treatment of cancer, inflammation and pain. We are currently evaluating PLEX_ONC in preclinical studies as an intratumoral therapy for the treatment of cancer. We will consider licensing rights to our PLEX technology for use with various biologics and small molecules.

As of May 31, 2020, we had 79 issued patents, including utility and composition of matter patents, and four allowed patent applications. Additionally, we have 32 pending patent applications in the United States, the European Patent Office, Canada, Australia, China, Japan, Israel, Brazil, the Eurasian Patent Organization, India, Mexico, New Zealand, the Philippines, Singapore, South Korea and Thailand. Our issued patents expire between 2029 and 2035.

Our Pipeline

(1): In December 2019, we initiated a potentially pivotal Phase 3 clinical trial of D-PLEX₁₀₀ for the prevention of sternal SSIs after cardiac surgery and we plan to initiate the first Phase 3 trial of D-PLEX₁₀₀ for the prevention of abdominal (soft tissue) SSIs in the third quarter of 2020 and the second Phase 3 trial approximately six months after the initiation of the first trial. We intend to pursue a broad label for D-PLEX₁₀₀ for the prevention of SSIs, the scope of which will depend on the clinical data generated from our potentially pivotal Phase 3 clinical trials and discussions with the FDA and the EMA.

Our Strategy

Our goal is to leverage our PLEX technology to develop and commercialize a pipeline of potentially transformative therapies for the local and prolonged delivery of drugs to address diseases with high unmet medical needs. The key elements of our strategy are as follows:

•: Successfully complete clinical development of D-PLEX₁₀₀ for the prevention of SSIs.
•: Pursue expedited regulatory pathways for our product candidates.
•: Execute on our go-to-market commercial strategy.
•: Expand our product pipeline for additional indications using our PLEX technology.
•: Pursue research collaborations with biopharmaceutical companies.
•: Build a fully integrated biopharmaceutical company utilizing our manufacturing facility.

COVID-19 Pandemic

Our business has been and will likely continue to be adversely affected by the effects of the recent and evolving COVID-19 pandemic, which has resulted in travel and other restrictions in order to reduce the spread of the disease, including in Israel, the United States and the European Union where we are conducting or planning clinical trials. We have paused enrollment of our Phase 3 trial of D-PLEX₁₀₀ for the prevention of sternal SSIs due to the COVID-19 pandemic, but we have informed investigators that they should continue monitoring current patients per the trial protocol. Pending the availability of additional funding following this offering, we expect to resume enrollment when we believe it is safe to do so and anticipate conducting an interim analysis after a total of 850 patients have been assessed for the presence of at least one sternal wound infection or mortality for any reason within 90 days post-surgery. We remain in close contact with our principal investigators and clinical sites in order to assess the impact of the COVID-19 pandemic on our clinical trials, expected timelines and costs and to consider any appropriate mitigating measures. Further, future patient enrollment, when we deem it appropriate, and clinical site initiation may be further delayed due to prioritization of hospital resources toward the COVID-19 pandemic or challenges in patient enrollment or maintenance due to quarantines or other interruptions to healthcare services. At this time we cannot fully forecast the scope of impacts that the COVID-19 pandemic may have on our ability to initiate trial sites, enroll and assess patients, supply study drug and report trial results for this trial or our planned trials of D-PLEX₁₀₀. See "Risk Factors—Risks Related to Our Business Operations—Our business and operations are likely to be adversely affected by the evolving and ongoing COVID-19 global pandemic."

Risks Associated With Our Business

Our business is subject to a number of risks of which you should be aware before making an investment decision. These risks are discussed more fully in the "Risk Factors" section of this prospectus immediately following this prospectus summary. These risks include, among others, the following:

•: We have a limited operating history and have incurred significant losses since our inception. We anticipate that we will continue to incur significant losses for the foreseeable future, and we may never achieve or maintain profitability.
•: We have never generated any revenue from product sales and may never be profitable.
•: Our business and operations have been and are likely to continue to be adversely affected by the evolving and ongoing COVID-19 global pandemic.

•: We are heavily dependent on the success of D-PLEX₁₀₀, including obtaining regulatory approval to market D-PLEX₁₀₀ in the United States and in the European Union.
•: Clinical drug development is difficult to design and implement and involves a lengthy and expensive process with uncertain outcomes.
•: If the FDA does not conclude that D-PLEX₁₀₀ satisfies the requirements under Section 505(b)(2) of the FFDCA, or Section 505(b)(2), or if we are unable to utilize the hybrid application pathway in the European Union, or if the requirements are not as we expect, the approval pathway for D-PLEX₁₀₀ will likely take significantly longer, cost significantly more and entail significantly greater complications and risks than anticipated, and in either case may not be successful.
•: As an organization, we have not previously conducted pivotal clinical trials, and we may be unable to do so for any product candidates we may develop, including D-PLEX₁₀₀.
•: Even if we complete the necessary clinical trials, we cannot predict when, or if, we will obtain regulatory approval to commercialize any of our product candidates, and the approval may be for a more narrow indication than we seek or be subject to other limitations or restrictions that limit its commercial profile.
•: Our product candidates and the administration of our product candidates may cause undesirable side effects or have other properties that could delay or prevent their regulatory approval, limit the commercial profile of an approved label or result in significant negative consequences following marketing approval, if any.
•: We rely on third parties to conduct certain elements of our preclinical studies and clinical trials and perform other tasks for us. If these third parties do not successfully carry out their contractual duties, meet expected deadlines or comply with regulatory requirements, we may not be able to obtain regulatory approval for or commercialize our product candidates.
•: If we are unable to obtain and maintain effective patent rights for our product candidates or any future product candidates, we may not be able to compete effectively in our markets. If we are unable to protect the confidentiality of our trade secrets or know-how, such proprietary information may be used by others to compete against us.
•: If we receive marketing approval for our product candidates, sales will be limited unless the product achieves broad market acceptance by physicians, patients, third-party payors, hospital pharmacists, infectious disease specialists and others in the medical community.
•: There is a substantial risk that we are or will become classified as a passive foreign investment company. If we are or become classified as a passive foreign investment company, our U.S. shareholders may suffer adverse tax consequences as a result, including having gains realized on the sale of our ordinary shares treated as ordinary income, rather than capital gain, the loss of the preferential rate applicable to dividends received on our ordinary shares by individuals who are U.S. holders, and having interest charges apply to distributions by us and gains from the sales of our shares. At this time, we do not expect to provide U.S. Holders with the information necessary for a U.S. Holder to make a QEF election. Each U.S. person that is an investor of a PFIC is generally also required to file an annual information return on IRS Form 8621 containing such information as the U.S. Treasury Department may require.

Corporate Information

We are an Israeli corporation based in Israel near Tel Aviv, and were incorporated in 2008. Our principal executive offices are located at 18 Hasivim Street, P.O. Box 7126, Petach Tikva 4959376 Israel. Our telephone number is +972 (74) 719-5700. Our website address is www.polypid.com. The

information contained on our website and available through our website is not incorporated by reference into and should not be considered a part of this prospectus, and the reference to our website in this prospectus is an inactive textual reference only.

Implications of Being an "Emerging Growth Company" and a Foreign Private Issuer

As a company with less than $1.07 billion in revenue during our last fiscal year, we qualify as an "emerging growth company" as defined in the Jumpstart Our Business Startups Act of 2012, or the JOBS Act. An emerging growth company may take advantage of specified reduced reporting and other burdens that are otherwise applicable generally to public companies. These provisions include:

•: requirement to include only two years of audited financial statements and only two years of related Management's Discussion and Analysis of Financial Condition and Results of Operations disclosure in our initial registration statement;
•: reduced executive compensation disclosure; and
•: an exemption from the auditor attestation requirement in the assessment of our internal control over financial reporting pursuant to the Sarbanes-Oxley Act of 2002.

We may take advantage of these provisions for up to five years or such earlier time that we are no longer an emerging growth company. We would cease to be an emerging growth company upon the earlier to occur of: (1) the last day of the fiscal year in which we have total annual gross revenues of $1.07 billion or more; (2) the date on which we have issued more than $1.0 billion in nonconvertible debt during the previous three years; or (3) the date on which we are deemed to be a large accelerated filer under the rules of the Securities and Exchange Commission, or the SEC. We may choose to take advantage of some but not all of these reduced burdens, and therefore the information that we provide holders of our ordinary shares may be different than the information you might receive from other public companies in which you hold equity. In addition, Section 107 of the JOBS Act also provides that an emerging growth company can take advantage of an extended transition period for complying with new or revised accounting standards applicable to public companies. We have elected to take advantage of the extended transition period to comply with new or revised accounting standards and to adopt certain of the reduced disclosure requirements available to emerging growth companies. As a result of the accounting standards election, we will not be subject to the same implementation timing for new or revised accounting standards as other public companies that are not emerging growth companies which may make comparison of our financials to those of other public companies more difficult. In addition, the information that we provide in this prospectus may be different than the information you may receive from other public companies in which you hold equity interests.

Upon consummation of this offering, we will report under the Securities Exchange Act of 1934, as amended, or the Exchange Act, as a non-U.S. company with foreign private issuer status. Even after we no longer qualify as an emerging growth company, as long as we continue to qualify as a foreign private issuer under the Exchange Act, we will be exempt from certain provisions of the Exchange Act that are applicable to U.S. domestic public companies, including:

•: the sections of the Exchange Act regulating the solicitation of proxies, consents or authorizations with respect to a security registered under the Exchange Act;
•: the sections of the Exchange Act requiring insiders to file public reports of their share ownership and trading activities and liability for insiders who profit from trades made in a short period of time; and
•: the rules under the Exchange Act requiring the filing with the SEC of quarterly reports on Form 10-Q containing unaudited financial statements and other specified information, and current reports on Form 8-K upon the occurrence of specified significant events.

THE OFFERING


Ordinary shares offered by us		ordinary shares
Underwriters' option to purchase additional ordinary shares		ordinary shares
Ordinary shares to be outstanding immediately after this offering		ordinary shares (or ordinary shares if the underwriters exercise their option to purchase an additional ordinary shares in full)
Use of proceeds		We estimate that the net proceeds to us from this offering will be approximately $ million, or approximately $ million if the underwriters exercise their option to purchase additional ordinary shares in full, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us, based on an assumed initial public offering price of $ per ordinary share, which is the midpoint of the price range set forth on the cover page of this prospectus.
		We intend to use the net proceeds from this offering, together with our existing cash, cash equivalents and short-term deposits: (i) to initiate and complete our first planned Phase 3 clinical trial of D-PLEX₁₀₀ for the prevention of SSIs after abdominal surgery, to initiate and conduct the second trial and to submit an NDA to the FDA on a rolling basis and (ii) for general corporate purposes, including research and development, and working capital.
		See "Use of Proceeds" for more information about the intended use of proceeds from this offering.
Risk factors		See "Risk Factors" and other information included in this prospectus for a discussion of factors that you should consider carefully before deciding to invest in our ordinary shares.
Passive foreign investment company considerations		Based upon the expected value of our assets, including any goodwill, and the expected nature and composition of our income and assets, we may be classified as a passive foreign investment company, or a PFIC, for the taxable year ending December 31, 2020 and in future taxable years. In particular, so long as we do not generate revenue from operations for any taxable year and do not receive any research and development grants, or if such grants that we receive do not constitute gross income for purposes of the PFIC test, we likely will be classified as a PFIC for such taxable year.
Proposed Nasdaq Global Market symbol		"PYPD"

Unless otherwise stated, the number of ordinary shares to be outstanding after this offering is based on 13,742,118 ordinary shares outstanding as of December 31, 2019, and excludes the following:

•: 1,672,853 ordinary shares reserved for issuance upon the exercise of outstanding options as of December 31, 2019, at a weighted average exercise price of $4.59 per ordinary share;

•: ordinary shares issuable upon the exercise of options granted subsequent to December 31, 2019, at a weighted average exercise price of $ per ordinary share;
•: 1,292,091 ordinary shares reserved for issuance under our Amended and Restated 2012 Share Option Plan as of December 31, 2019, as well as any automatic increases in the number of ordinary shares reserved for issuance under the Amended and Restated 2012 Share Option Plan;
•: 2,882,215 ordinary shares issuable upon the exercise of outstanding warrants to purchase Series D-2 preferred shares, at a weighted average exercise price of $8.83 per ordinary share, which warrants will automatically convert into warrants to purchase ordinary shares upon the closing of this offering and are expected to remain outstanding at the consummation of this offering; and
•: 209,828 ordinary shares issuable upon the exercise of outstanding warrants to purchase Series E-1 preferred shares, at a weighted average exercise price of $15.25 per ordinary share, which warrants will automatically convert into warrants to purchase ordinary shares upon the closing of this offering and are expected to remain outstanding at the consummation of this offering.

Unless otherwise indicated, all information in this prospectus assumes or gives effect to:

•: an initial public offering price of $ per ordinary share, which is the midpoint of the price range set forth on the cover page of this prospectus;
•: no exercise of the underwriters' option to purchase up to an additional ordinary shares;
•: the automatic conversion of all outstanding preferred shares into 13,097,218 ordinary shares, which will occur upon the closing of this offering;
•: the exercise of warrants to purchase 56,250 Series A preferred shares, and the automatic conversion thereof into 56,250 ordinary shares, which will occur upon the closing of this offering; and
•: the adoption of our amended and restated articles of association prior to the closing of this offering, which will replace our amended and restated articles of association as currently in effect.

SUMMARY FINANCIAL DATA

The following table summarizes our financial data. We have derived the following statements of operations data for the years ended December 31, 2019 and 2018 and the balance sheet data as of December 31, 2019 from our audited consolidated financial statements included elsewhere in this prospectus, which have been prepared in accordance with U.S. GAAP. Our historical results are not necessarily indicative of the results that may be expected in the future, and our results for any interim period are not necessarily indicative of results that may be expected for any full year. The following summary financial data should be read in conjunction with "Selected Financial Data," "Management's Discussion and Analysis of Financial Condition and Results of Operations" and our audited consolidated financial statements and related notes included elsewhere in this prospectus.

	Year Ended December 31,

	2019			2018
	(in thousands, except share and per share amounts)
Statements of operations data:
Research and development, net	$	14,083		$	12,550
General and administrative		4,477			5,814

Operating loss		(18,560	)		(18,364	)
Financial income, net		11,655			24,281

Net (loss) profit	$	(6,905	)	$	5,917



Basic net (loss) profit per ordinary share	$	(22.65	)	$	0.15



Diluted net loss per ordinary share	$	(22.65	)	$	(0.82	)



Weighted average number of ordinary shares used in computing basic net loss per share		588,338			586,938



Weighted average number of ordinary shares used in computing diluted net loss per share		588,338			641,587



Pro forma basic and diluted net loss per ordinary share⁽¹⁾	$	(0.97	)



Weighted average number of ordinary shares used in computing basic and diluted net loss per share — pro forma (unaudited)		13,741,806

⁽¹⁾: See Note 13 to our audited consolidated financial statements included elsewhere in this prospectus for an explanation of the method used to calculate the historical and pro forma basic and diluted net loss per ordinary share.

	As of December 31, 2019

	Actual			Pro Forma⁽¹⁾		Pro Forma As Adjusted⁽²⁾
				(unaudited)
	(in thousands)
Balance sheet data:
Cash, cash equivalents and short-term deposits	$	26,609		$	26,622	$
Working capital⁽³⁾		24,822			24,835
Total assets		33,752			33,765
Convertible preferred shares		106,313			—
Convertible preferred shares warrant liability		12,241			—
Total shareholders' equity (deficiency)		(87,632	)		30,935

⁽¹⁾: Pro forma balance sheet data give effect to: (i) the automatic conversion of all outstanding preferred shares into 13,097,218 ordinary shares upon the closing of this offering and (ii) the

exercise of warrants to purchase Series A preferred shares, and the automatic conversion thereof into 56,250 ordinary shares, which will occur upon the closing of this offering.

⁽²⁾: Pro forma as adjusted balance sheet data give additional effect to the sale of ordinary shares in this offering at the assumed initial public offering price of $ per ordinary share, which is the midpoint of the price range set forth on the cover page of this prospectus, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us.
⁽³⁾: Working capital is defined as total current assets minus total current liabilities.

The pro forma information discussed above is illustrative only and will be adjusted based on the actual initial public offering price and other terms of our initial public offering determined at pricing. Each $1.00 increase (decrease) in the assumed initial public offering price of $ per share, which is the midpoint of the price range set forth on the cover page of this prospectus, would increase (decrease) the pro forma as adjusted amount of each of cash, cash equivalents and short-term deposits, total assets and shareholders' equity (deficiency) by $ million, assuming that the number of ordinary shares offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us. Similarly, each increase (decrease) of 1.0 million shares in the number of ordinary shares offered by us at the assumed initial public offering price would increase (decrease) each of cash, cash equivalents and short-term deposits, total assets and shareholders' equity (deficiency) by $ million.

Investing in our ordinary shares involves a high degree of risk. You should carefully consider the risks and uncertainties described below, in addition to the other information set forth in this prospectus, including the consolidated financial statements and the related notes included elsewhere in this prospectus, before purchasing our ordinary shares. If any of the following risks actually occurs, our business, financial condition, cash flows and results of operations could be negatively impacted. In that case, the trading price of our ordinary shares would likely decline and you might lose all or part of your investment.

We have a limited operating history and have incurred significant losses since our inception. We anticipate that we will continue to incur significant losses for the foreseeable future, and we may never achieve or maintain profitability.

We are a Phase 3 clinical-stage pharmaceutical company with a limited operating history. We have incurred operating losses each year since our inception, including operating losses of $18.6 million and $18.4 million for the years ended December 31, 2019 and 2018, respectively. As of December 31, 2019, we had an accumulated deficit of $93.3 million. We have devoted substantially all of our financial resources to designing and developing our PLEX product candidates, including conducting clinical trials and preclinical studies and providing general and administrative support for these operations. We expect that our expenses and operating losses will increase for the foreseeable future as we continue clinical development of D-PLEX₁₀₀ for the prevention of surgical site infections, or SSIs, and develop other product candidates using our PLEX technology. Our ability to ultimately achieve revenues and profitability is dependent upon our ability to successfully complete the development of D-PLEX₁₀₀ and any future product candidates, obtain necessary regulatory approvals for and successfully manufacture, market and commercialize our products.

We anticipate that our expenses will increase substantially based on a number of factors, including to the extent that we:

To date, we have financed our operations primarily through the sale of equity securities, convertible loans made by certain of our shareholders, royalty-bearing and non-royalty bearing grants that we received from the Israeli Innovation Authority, or the IIA, formerly known as the Office of the Chief Scientist of the Ministry of Economy and Industry, and non-royalty bearing grants under the European Commission's Seventh Framework Programme for Research, or the FP7. The amount of any future operating losses will depend, in part, on the rate of our future expenditures and our ability to obtain funding through equity or debt financings, strategic collaborations or grants. Even if we obtain regulatory approval to market one or more product candidates, our future revenue will depend upon the size of any markets in which such product candidates receive approval and our ability to achieve sufficient market acceptance, pricing, reimbursement from third-party payors for such product candidates. Further, the operating losses that we incur may fluctuate significantly from quarter to quarter and year to year, such that a period-to-period comparison of our results of operations may not be a good indication of our future performance. Other unanticipated costs may also arise.

We have never generated any revenue from product sales and may never be profitable.

We have no products approved for marketing in any jurisdiction and we have never generated any revenue from product sales. Our ability to generate revenue and achieve profitability depends on our ability, alone or with strategic collaboration partners, to successfully complete the development of, and obtain the regulatory and marketing approvals necessary to commercialize, D-PLEX₁₀₀ or any future product candidates. We do not anticipate generating revenue from product sales for at least the next several years. Our ability to generate future revenue from product sales will depend heavily on our ability to:

Even if D-PLEX₁₀₀ or any future product candidates are approved for marketing and sale, we anticipate incurring significant incremental costs associated with commercializing such product candidates. Our expenses could increase beyond expectations if we are required by the United States Food and Drug Administration, or the FDA, the European Medicines Agency, or the EMA, or other regulatory agencies, domestic or foreign, or ethical committees in medical centers, to change our manufacturing processes or assays or to perform clinical, nonclinical or other types of studies in addition to those that we currently anticipate. Even if we are successful in obtaining regulatory approvals to market D-PLEX₁₀₀ or any future product candidates, our revenue earned from such product candidates will be dependent in part upon the breadth of the product label, the size of the markets in the territories for which we gain regulatory approval for such products, the accepted price for such products, our ability to obtain reimbursement for such products at any price, whether we own the commercial rights for that territory in which such products have been approved and the expenses associated with manufacturing and marketing such products for such markets. Therefore, we may not generate significant revenue from the sale of such products, even if approved. Further, if we are not able to generate significant revenue from the sale of our approved products, we may be forced to curtail or cease our operations. Due to the numerous risks and uncertainties involved in product development, it is difficult to predict the timing or amount of increased expenses, or when, or if, we will be able to achieve or maintain profitability.

Even if this offering is successful, we will need to raise substantial additional funding, which may not be available on acceptable terms, or at all. Failure to obtain funding on acceptable terms and on a timely basis may require us to curtail, delay or discontinue our product development efforts or other operations.

We are currently advancing D-PLEX₁₀₀ through clinical development, as well as our preclinical and research and development programs, in an effort to obtain regulatory approval. Developing product candidates is expensive, and we expect our research and development expenses to increase substantially in connection with our ongoing activities, particularly as we advance product candidates through clinical trials and regulatory approval. Furthermore, upon the closing of this offering, we expect to incur additional ongoing costs associated with operating as a public company.

To date, we have financed our operations primarily through the sale of equity securities, convertible loans made by certain of our shareholders, royalty-bearing and non-royalty bearing grants that we received from the IIA and FP7. As of December 31, 2019, we had cash, cash equivalents and short-term deposits of $26.6 million. We will require significant additional financing in the future to

fund our operations. Our future funding requirements will depend on many factors, including but not limited to:

Identifying potential product candidates and conducting preclinical testing and clinical trials is a time-consuming, expensive and uncertain process that takes years to complete, and we may never generate the necessary data or results required to obtain marketing approval and achieve product sales. In addition, our product candidates, if and when approved, may not achieve commercial success. Our product revenues, if any, will be derived from or based on sales of product candidates that may not be commercially available for many years, if at all. Accordingly, we will need to continue to rely on additional financing to achieve our business objectives. Any additional fundraising efforts may divert our management from their day-to-day activities, which may adversely affect our ability to develop and commercialize our product candidates.

We cannot guarantee that future financing will be available in sufficient amounts or on terms acceptable to us, if at all, and the terms of any financing may adversely affect the interests or rights of our shareholders. Even if we believe that we have sufficient funds for our current or future operating plans, we may seek additional capital if market conditions are favorable or if we have specific strategic considerations. The issuance of additional securities, whether equity or debt, by us, or the possibility of such issuance, may cause the market price of our shares to decline. Further, our ability to raise additional capital may be adversely impacted by potential worsening global economic conditions and the recent disruptions to and volatility in the credit and financial markets in the United States and worldwide resulting from the ongoing COVID-19 pandemic.

To the extent that we raise additional capital through the sale of equity or convertible debt securities, your ownership interest will be diluted, and the terms of such securities may include liquidation or other preferences that adversely affect your rights as a shareholder. Debt financing, if available, may involve covenants restricting our operations or our ability to incur additional debt. If we raise additional funds through collaboration and licensing arrangements with third parties, it may be

necessary to relinquish certain rights to our technologies or our product candidates, or to grant licenses on terms that are not favorable to us.

If we are unable to obtain funding on acceptable terms and on a timely basis, we may be required to significantly curtail, delay or discontinue one or more of our research, development or manufacturing programs or the commercialization of any approved product, or be unable to expand our operations or otherwise capitalize on our business opportunities, as desired, which could materially affect our business, financial condition and results of operations.

Risks Related to the Discovery, Development and Clinical Testing of Product Candidates

We are heavily dependent on the success of D-PLEX₁₀₀, including obtaining regulatory approval to market D-PLEX₁₀₀ in the United States and the European Union.

To date, we have invested all of our efforts and financial resources to: (i) research and develop our PLEX technology, our lead product candidate, D-PLEX₁₀₀, and our preclinical and research and development programs, including conducting preclinical studies and clinical trials, and providing general and administrative support for these operations; and (ii) develop and secure our intellectual property portfolio for D-PLEX₁₀₀ and our PLEX technology. Our future success is dependent on our ability to successfully develop, obtain regulatory approval for and commercialize one or more of our current and future product candidates. Our product candidates' marketability is subject to significant risks associated with successfully completing current and future clinical trials, including:

Many of these clinical, regulatory and commercial risks are beyond our control. Accordingly, we cannot assure you that we will be able to advance D-PLEX₁₀₀ and any future product candidates through clinical development, or to obtain regulatory approval of or commercialize any product candidates. If we fail to achieve these objectives or overcome the challenges presented above, we could experience significant delays or an inability to successfully commercialize D-PLEX₁₀₀ and any future product candidates. Accordingly, we may not be able to generate sufficient revenues through the sale of our product candidates to enable us to continue our business.

Additionally, approval of a product candidate in the United States by the FDA does not ensure approval of such product candidate by regulatory authorities in other countries or jurisdictions, and approval by one foreign regulatory authority does not ensure approval by regulatory authorities in other foreign countries or by the FDA. We may never obtain approval outside of the United States, which would limit our market opportunities and adversely affect our business.

Regulatory approval processes of the FDA, EMA and comparable foreign regulatory authorities are lengthy, time-consuming and unpredictable, and if we are ultimately unable to obtain regulatory approval for D-PLEX₁₀₀ or any future product candidates, our business may fail.

The research, development, testing, manufacturing, labeling, packaging, approval, promotion, advertising, storage, recordkeeping, marketing, distribution, post-approval monitoring and reporting and export and import of drug products are subject to extensive regulation by the FDA, the EMA and by foreign regulatory authorities in other countries. These regulations differ from country to country. To gain approval to market D-PLEX₁₀₀ and any future product candidates, we must provide data from well-controlled clinical trials that adequately demonstrate the safety and efficacy of the product for the intended indication to the satisfaction of the FDA, EMA or other regulatory authority. We have not yet obtained regulatory approval to market any product candidate in the United States or any other country. The FDA, EMA or other regulatory agencies can delay, limit or deny approval of D-PLEX₁₀₀ or any future product candidate for many reasons, including:

In the United States, we will be required to submit an NDA to obtain FDA approval before marketing any product candidate. An NDA must include extensive preclinical and clinical data and supporting information to establish the product candidate's safety and efficacy for each desired indication. In the case of an NDA covered by Section 505(b)(2) of the Federal Food, Drug, and Cosmetic Act, or the FFDCA, we may rely in part on data not developed by us and for which we have not obtained a right of reference or use, including published scientific literature or the FDA's findings of safety and/or effectiveness for a previously approved drug. The NDA must also include significant information regarding the chemistry, manufacturing and controls for the product. The FDA may further inspect our manufacturing facilities to ensure that the facilities can manufacture any product candidate and any product, if and when approved, in compliance with the applicable regulatory requirements, as well as inspect our clinical trial sites to ensure that our trials are properly conducted. Obtaining approval of an NDA is a lengthy, expensive and uncertain process, and approval may not be obtained. Upon submission of an NDA, the FDA must make an initial determination that the application is sufficiently complete to accept the submission for filing. We cannot be certain that any submissions will be accepted for filing and review by the FDA, or ultimately be approved. If the application is not accepted for review or approval, the FDA may require that we conduct additional clinical or preclinical trials, or take other actions before it will reconsider our application. If the FDA requires additional trials or data, we would incur increased costs and delays in the marketing approval process, which may

require us to expend more resources than we have available. Even if the FDA agrees that results from our ongoing Phase 3 trial evaluating D-PLEX₁₀₀ for the prevention of post-cardiac surgery sternal SSIs and our planned Phase 3 trial for the prevention of SSIs following abdominal surgery are sufficient to support the submission of one or more NDAs, the FDA may determine that the data from these trials support a more narrow indication than we may propose, if the FDA were to approve such NDAs at all. In addition, the FDA may not consider any additional information to be complete or sufficient to support approval.

Regulatory authorities outside of the United States, such as in the European Union, also have requirements for approval of drugs for commercial sale with which we must comply prior to marketing in those areas. Regulatory requirements can vary widely from country to country and could delay or prevent the introduction of a product candidate. Clinical trials conducted in one country may not be accepted by regulatory authorities in other countries, and obtaining regulatory approval in one country does not mean that regulatory approval will be obtained in any other country. However, the failure to obtain regulatory approval in one jurisdiction could have a negative impact on our ability to obtain approval in a different jurisdiction. Approval processes vary among countries and can involve additional product candidate testing and validation and additional administrative review periods. Seeking foreign regulatory approval could require additional non-clinical studies or clinical trials, which could be costly and time consuming. Foreign regulatory approval may include all of the risks associated with obtaining FDA approval. For all of these reasons, if we seek foreign regulatory approval for any product candidate, we may not obtain such approvals on a timely basis, if at all.

Even if we eventually complete clinical testing and receive approval of any regulatory filing for a product candidate, the FDA may grant approval contingent on the performance of costly and potentially time-consuming additional post-approval clinical trials or subject to contraindications, black box warnings, restrictive surveillance or Risk Evaluation and Mitigation Strategies, or REMS. Further, the FDA, EMA or other foreign regulatory authorities may also approve a product candidate for a more limited indication or a narrower patient population than we originally requested, and these regulatory authorities may not approve the labeling that we believe is necessary or desirable for the successful commercialization of any product candidate. Following any approval for commercial sale of a product candidate, certain changes to the product, such as changes in manufacturing processes and additional labeling claims, as well as new safety information, will be subject to additional FDA notification, or review and approval. Also, regulatory approval for any product candidate may be withdrawn. To the extent we seek regulatory approval in foreign countries, we may face challenges similar to those described above with regulatory authorities in applicable jurisdictions. Any delay in obtaining, or inability to obtain, applicable regulatory approval for D-PLEX₁₀₀ or any future product candidate would delay or prevent commercialization of such product candidate and would thus negatively impact our business, results of operations and prospects.

Clinical drug development is difficult to design and implement and involves a lengthy and expensive process with uncertain outcomes.

Clinical testing is expensive and can take many years to complete, and its outcome is inherently uncertain. A failure of one or more of our clinical trials can occur at any time during the clinical trial process. We do not know whether future clinical trials, if any, will begin on time, need to be redesigned, enroll an adequate number of patients on time or be completed on schedule, if at all. Clinical trials can be delayed, suspended or terminated for a variety of reasons, including failure to:

We may also experience numerous unforeseen events during, or as a result of, clinical trials that could delay or prevent our ability to receive marketing approval or commercialize any product candidate, including:

In addition, disruptions caused by the COVID-19 pandemic may increase the likelihood that we encounter such difficulties in initiating, enrolling, conducting or completing our planned and ongoing clinical trials. We may also encounter delays if a clinical trial is suspended or terminated by us, by the IRBs of the institutions in which such trials are being conducted, by the trial's data safety monitoring board, by the FDA, EMA or other regulatory agencies. Such authorities may suspend or terminate one or more of our clinical trials due to a number of factors, including our failure to conduct the clinical trial in accordance with relevant regulatory requirements or clinical protocols, inspection of the clinical trial operations or site by the FDA, EMA or other regulatory agencies resulting in the imposition of a clinical hold, unforeseen safety issues or adverse side effects, failure to demonstrate a benefit from using a drug, changes in governmental regulations or administrative actions or lack of adequate funding to continue the clinical trial.

Further, conducting clinical trials in foreign countries, as we plan to do for D-PLEX₁₀₀ and any future product candidates, presents additional risks that may delay completion of our clinical trials. These risks include the failure of enrolled patients in foreign countries to adhere to clinical protocol as a result of differences in healthcare services or cultural customs, managing additional administrative burdens associated with foreign regulatory schemes, as well as political and economic risks relevant to such foreign countries.

If we experience delays in completing any clinical trial of a product candidate or successfully obtaining regulatory approval, the commercial prospects of such product candidate may be harmed, and our ability to generate product revenues from such product candidate will be delayed. In addition, any delays in completing our clinical trials will increase our costs, slow down our product candidate development and approval process and jeopardize our ability to commence product sales and generate revenues. Any of these occurrences may significantly harm our business and financial condition. In addition, many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of regulatory approval of our product candidates.

The results of earlier studies and trials may not be predictive of future trial results, and our clinical trials may fail to adequately demonstrate the safety and efficacy of our product candidates.

Results from preclinical studies or early-stage clinical trials are not necessarily predictive of future clinical trial results. Preclinical tests and Phase 1 and Phase 2 clinical trials are primarily designed to test safety, to study pharmacokinetics and pharmacodynamics and to understand the side effects of product candidates at various doses and schedules. Success in preclinical or animal studies and early clinical trials does not ensure that later, large-scale efficacy trials will be successful nor does it predict final results. Our product candidates may fail to show the desired safety and efficacy in clinical development despite positive results in preclinical studies or after having successfully advanced through initial clinical trials. This failure might cause us to abandon further development of D-PLEX₁₀₀ for the prevention of SSIs, which is currently our most advanced product candidate.

There is a high failure rate for product candidates proceeding through clinical trials. Many companies in the pharmaceutical industry have suffered significant setbacks in late-stage clinical trials even after achieving promising results in preclinical testing and earlier-stage clinical trials. Data obtained from preclinical and clinical activities are subject to varying interpretations, which may delay,

limit or prevent regulatory approval. In addition, we may experience regulatory delays or rejections as a result of many factors, including due to changes in regulatory policy during the period of our product candidate development. Success in preclinical testing and early clinical trials does not ensure that later clinical trials will generate the same results or otherwise provide adequate data to demonstrate the efficacy and safety of a product candidate. Frequently, product candidates that have shown promising results in early clinical trials have subsequently suffered significant setbacks in later clinical trials. Additionally, even if we are able to complete clinical trials, the results may not be sufficient to obtain regulatory approval for our product candidates.

Interim, "top-line" and preliminary data from our clinical trials that we announce or publish from time to time may change as more patient data become available and are subject to audit and verification procedures that could result in material changes in the final data.

From time to time, we may publicly disclose top-line or preliminary data from our clinical trials, which is based on a preliminary analysis of then-available data, and the results and related findings and conclusions are subject to change following a more comprehensive review of the data related to the particular study or trial. We also make assumptions, estimations, calculations and conclusions as part of our analyses of data, and we may not have received or had the opportunity to fully and carefully evaluate all data. As a result, the top-line or preliminary results that we report may differ from future results of the same trials, or different conclusions or considerations may qualify such results, once additional data have been received and fully evaluated. Top-line or preliminary data also remain subject to audit and verification procedures that may result in the final data being materially different from the top-line or preliminary data we previously published. As a result, top-line and preliminary data should be viewed with caution until the final data are available.

From time to time, we may also disclose interim data from our preclinical studies and clinical trials. Interim data from clinical trials that we may complete are subject to the risk that one or more of the clinical outcomes may materially change as patient enrollment continues and more patient data become available. Adverse differences between interim data and final data could significantly harm our business prospects. Further, disclosure of interim data by us or by our competitors could result in volatility in the price of our common stock after this offering.

Further, others, including regulatory agencies, may not accept or agree with our assumptions, estimates, calculations, conclusions or analyses or may interpret or weigh the importance of data differently, which could impact the value of the particular program, the approvability or commercialization of the particular product candidate or product and our company in general. In addition, the information we choose to publicly disclose regarding a particular study or clinical trial is based on what is typically extensive information, and you or others may not agree with what we determine is material or otherwise appropriate information to include in our disclosure.

If the interim, top-line or preliminary data that we report differ from actual results, or if others, including regulatory authorities, disagree with the conclusions reached, our ability to obtain approval for, and commercialize, our product candidates may be harmed, which could harm our business, operating results, prospects or financial condition.

If the FDA does not conclude that D-PLEX₁₀₀ satisfies the requirements under Section 505(b)(2) of the FFDCA, or Section 505(b)(2), or if we are unable to utilize the hybrid application pathway in the European Union, or if the requirements are not as we expect, the approval pathway for D-PLEX₁₀₀ will likely take significantly longer, cost significantly more and entail significantly greater complications and risks than anticipated, and in either case may not be successful.

We intend to utilize the FDA's Section 505(b)(2) regulatory pathway, and the hybrid application pathway in the European Union, which is analogous to the Section 505(b)(2) pathway, to seek approval

of D-PLEX₁₀₀. The Drug Price Competition and Patent Term Restoration Act of 1984, also known as the Hatch-Waxman Act, added Section 505(b)(2) to the FFDCA. Section 505(b)(2) permits the filing of an NDA where at least some of the information required for approval comes from trials or studies that were not conducted by or for the applicant, and for which the applicant has not received a right of reference or use from the person by or for whom the investigations were conducted, which we believe could expedite the development program for D-PLEX₁₀₀ by potentially decreasing the amount of preclinical and clinical data that we would need to generate in order to obtain FDA approval. However, while we believe that D-PLEX₁₀₀ is a reformulation of an already-approved drug and, therefore, will be eligible for submission of an NDA under Section 505(b)(2), the FDA may disagree and determine that D-PLEX₁₀₀ is not eligible for review under such regulatory pathway.

If we are unable to pursue these regulatory pathways as anticipated, we may need to conduct additional preclinical experiments and clinical trials, provide additional data and information and meet additional standards for regulatory approval. If this were to occur, the time and financial resources required to obtain FDA approval for D-PLEX₁₀₀, and complications and risks associated with D-PLEX₁₀₀, would likely increase significantly. Moreover, inability to pursue the Section 505(b)(2) or similar regulatory pathway could result in new competitive products reaching the market more quickly than D-PLEX₁₀₀ or any future product candidates, which would likely harm our competitive position and prospects. Even if we are allowed to pursue the Section 505(b)(2) or similar regulatory pathway, D-PLEX₁₀₀ may not receive the requisite approvals for commercialization, and there is no guarantee the 505(b)(2) or similar pathway would ultimately lead to faster product development or earlier approval.

In addition, notwithstanding the approval of a number of products by the FDA under Section 505(b)(2) over the last few years, certain competitors and others have objected to the FDA's interpretation of Section 505(b)(2). If the FDA's interpretation of Section 505(b)(2) is successfully challenged, the FDA may be required to change its 505(b)(2) policies and practices, which could delay or even prevent the FDA from approving any NDA that we submit under Section 505(b)(2). In addition, the pharmaceutical industry is highly competitive, and Section 505(b)(2) NDAs are subject to special requirements designed to protect the patent rights of sponsors of previously approved drugs that are referenced in a Section 505(b)(2) NDA. These requirements may give rise to patent litigation and mandatory delays in approval of our potential future NDAs for up to 30 months depending on the outcome of any litigation. It is also not uncommon for a manufacturer of an approved product to file a citizen petition with the FDA seeking to delay approval of, or impose additional approval requirements for, pending competing products. If successful, such petitions can significantly delay, or even prevent, the approval of the new product. However, even if the FDA ultimately denies such a petition, the FDA may substantially delay approval while it considers and responds to the petition.

Moreover, even if D-PLEX₁₀₀ or any future product candidates are approved under the Section 505(b)(2) pathway, as the case may be, the approval may be subject to limitations on the indicated uses for which the products may be marketed or to other conditions of approval, or may contain requirements for costly post-marketing testing and surveillance to monitor the safety or efficacy of the products.

PLEX is a novel technology, which makes it difficult to accurately and reliably predict the time and cost of development and of subsequently obtaining regulatory approval of D-PLEX₁₀₀ or any future PLEX product candidates.

We have concentrated our efforts and product research on our PLEX drug delivery technology, and our future success depends on the successful development of this technology and products based on it. There can be no assurance that any development problems we experience in the future related to our product candidates will not cause significant delays or unanticipated costs, or that such development problems can be solved. We may be unable to maintain and further develop sustainable,

reproducible and scalable manufacturing processes, or transfer these processes to collaborators, which may prevent us from completing our clinical studies or commercializing our products on a timely or profitable basis, if at all. To our knowledge, no regulatory authority has granted approval to any person or entity, including us, to market and commercialize therapeutics using our novel delivery system. We may never receive approval to market and commercialize any product candidate that utilizes PLEX.

As an organization, we have not previously conducted pivotal clinical trials, and we may be unable to do so for any product candidates we may develop, including D-PLEX₁₀₀.

We will need to successfully complete pivotal clinical trials in order to obtain the approval of the FDA, EMA or other regulatory agencies to market D-PLEX₁₀₀ or any future product candidates. Carrying out later-stage clinical trials and the submission of a successful NDA is a complicated process. As an organization, we have not previously conducted any later stage or pivotal clinical trials and have limited experience in preparing, submitting and prosecuting regulatory filings. Consequently, we may be unable to successfully and efficiently execute and complete necessary clinical trials, including our ongoing and planned Phase 3 trials, in a way that leads to marketing approval of D-PLEX₁₀₀. We may require more time and incur greater costs than our competitors and may not succeed in obtaining regulatory approvals of product candidates that we develop. Failure to commence or complete, or delays in, our planned clinical trials, could prevent us from or delay us in commercializing D-PLEX₁₀₀. See "—Risks Related to our Reliance on Third Parties—We rely on third parties to conduct certain elements of our preclinical and clinical trials and perform other tasks for us. If these third parties do not successfully carry out their contractual duties, meet expected deadlines or comply with regulatory requirements, we may not be able to obtain regulatory approval for or commercialize our product candidates."

We may find it difficult to enroll patients in our clinical trials, which could delay or prevent us from proceeding with such trials.

Identifying and qualifying patients to participate in our clinical trials is critical to our success. The timing of our clinical trials depends in part on the speed at which we can recruit patients to participate in testing our product candidates, and we may experience delays in our clinical trials if we encounter difficulties in enrollment. Patient enrollment and retention in clinical trials depends on many factors, including the size of the patient population, the nature of the trial protocol, our ability to recruit clinical trial investigators with the appropriate competencies and experience, the existing body of safety and efficacy data with respect to the study drug, the number and nature of competing treatments and ongoing clinical trials of competing drugs for the same indication, the proximity of patients to clinical sites, clinicians' and patients' perceptions as to the potential advantages of the product candidate being studied in relation to other available therapies, including any drugs that may be approved for the indications we are investigating, the eligibility criteria for the trials, our ability to obtain and maintain patient consents and the risk that patients enrolled in clinical trials will drop out of the trials before completion. We may also experience disruptions in patient enrollment due to the COVID-19 pandemic, including difficulties in initiating clinical sites and enrolling and retaining participants, the diversion of healthcare resources away from clinical trials and challenges related to travel or quarantine policies that may be implemented. For example, we have paused enrollment in our Phase 3 trial of D-PLEX₁₀₀ for the prevention of sternal SSIs due to the COVID-19 pandemic, and we anticipate that enrollment may be further delayed if hospitals and patients delay the rescheduling of sternal surgeries as a result of COVID-19.

We may not be able to identify, recruit and enroll a sufficient number of patients to complete our clinical trials because of the perceived risks and benefits of the product candidate under study, the availability and efficacy of competing therapies and clinical trials, the proximity and availability of clinical trial sites for prospective patients and the patient referral practices of physicians. We may also

face challenges in identifying trial sites and enrolling patients in global trials such as our ongoing and planned Phase 3 trials of D-PLEX₁₀₀. If patients are unwilling to participate in our trials for any reason, the timeline for recruiting patients, conducting trials and obtaining regulatory approval of potential products will be delayed.

Our product candidates and the administration of our product candidates may cause undesirable side effects or have other properties that could delay or prevent their regulatory approval, limit the commercial profile of an approved label or result in significant negative consequences following marketing approval, if any.

Undesirable side effects, including toxicology, caused by D-PLEX₁₀₀ or any future product candidates, or the drugs encapsulated by such product candidates, could cause us or regulatory authorities to interrupt, delay or halt clinical trials and could result in a more restrictive label or the delay or denial of regulatory approval by the FDA, EMA or other regulatory agencies. Results of our trials could reveal a high and unacceptable severity and prevalence of these or other side effects. In such an event, our clinical studies could be suspended or terminated, and the FDA, EMA or other regulatory agencies could order us to cease further development of or deny or withdraw approval of our product candidates for any or all targeted indications. Moreover, during the conduct of clinical trials, patients report changes in their health, including illnesses, injuries and discomforts, to their study doctor. Often, it is not possible to determine whether or not the product candidate being studied caused these conditions.

Drug-related, drug-product related, formulation-related and administration-related side effects could affect patient recruitment, the ability of enrolled patients to complete the clinical trials or result in potential product liability claims, which could exceed our clinical trial insurance coverage. We do not currently have product liability insurance and do not anticipate obtaining product liability insurance until such time as we have received FDA, EMA or other comparable foreign authority marketing approval for one of our product candidates and such product is being provided to patients outside of clinical trials.

Additionally, if one or more of our product candidates receives marketing approval, and we or others later identify undesirable side effects caused by such products, a number of potentially significant negative consequences could result, including but not limited to:

Any of these events could prevent us from achieving or maintaining market acceptance of the particular product candidate, if approved, and could significantly harm our business, results of operations and prospects.

Even if we complete the necessary clinical trials, we cannot predict when, or if, we will obtain regulatory approval to commercialize any of our product candidates, and the approval may be for a more narrow indication than we seek or be subject to other limitations or restrictions that limit its commercial profile.

We cannot commercialize a product candidate until the appropriate regulatory authorities have reviewed and approved the product candidate. Even if our current or future product candidates meet safety and efficacy endpoints in pivotal clinical trials, the regulatory authorities may not complete their review processes in a timely manner, or we may not be able to obtain regulatory approval. Additional delays may result if an FDA Advisory Committee or other regulatory authority recommends non-approval or restrictions on approval. This may include approval of a product candidate for more limited indications than requested or they may impose significant limitations in the form of warnings. In addition, we may experience delays or rejections based upon additional government regulation from future legislation or administrative action, or changes in regulatory authority policy during the period of product development, clinical trials and the review process.

Regulatory authorities also may approve a product candidate for more limited indications than requested or they may impose significant limitations in the form of warnings or a REMS. These regulatory authorities may require precautions or contra-indications with respect to conditions of use or they may grant approval subject to the performance of costly post-marketing clinical trials. In addition, regulatory authorities may not approve the labeling claims that are necessary or desirable for the successful commercialization of any of our product candidates. For example, the FDA may disagree that our ongoing and planned Phase 3 trials evaluating D-PLEX₁₀₀ for the prevention of post-cardiac surgery sternal SSIs and for the prevention of SSIs following abdominal surgery are sufficient to support either NDA submissions seeking approval for the specific indications under evaluation in our ongoing and planned Phase 3 trials or NDA submissions seeking approval for broader indications covering the prevention of SSIs. Although we intend to pursue a broad label for D-PLEX₁₀₀, to date we have not had any discussions with, nor received any feedback from, the FDA with respect to the possibility of pursuing a label broader than the prevention of post-cardiac surgery sternal SSIs or the prevention of SSIs following abdominal surgery. Even if the FDA were to agree that these trials were sufficient to support one or more NDA submissions, the FDA may determine that the data from these trials support more narrow indications than we may propose, if the FDA were to approve such NDA submissions at all. If the FDA does not agree that our ongoing and planned Phase 3 trials support the submission of an NDA for any indication, we will be required to conduct additional clinical trials to support our proposed indications. Any of the foregoing scenarios could materially harm the commercial prospects for our product candidates and materially and adversely affect our business, financial condition, results of operations and prospects.

Although D-PLEX₁₀₀ has been granted Qualified Infectious Disease Product designation by the FDA for the prevention of sternal wound infection after cardiac surgery and for the prevention of post-abdominal surgery incisional infection, these designations do not guarantee a shorter FDA review process, or that D-PLEX₁₀₀ will ultimately be approved by the FDA for any indication.

Under the Generating Antibiotic Incentives Now Act, or GAIN Act, the FDA may designate a product as a "qualified infectious disease product," or QIDP. In order to receive this designation, a drug must qualify as an antibacterial or antifungal drug for human use intended to treat serious or life-threatening infections, including those caused by either (1) an antibacterial or antifungal resistant pathogen, including novel or emerging infectious pathogens, or (2) a so-called "qualifying pathogen"

found on a list of potentially dangerous, drug-resistant organisms established and maintained by the FDA under the GAIN Act. A sponsor must request such designation before submitting a marketing application. We requested and received QIDP designations for D-PLEX₁₀₀ for the prevention of sternal wound infection after cardiac surgery and for the prevention of post-abdominal surgery incisional infection. We anticipate that the QIDP designations will provide, among other benefits, an overall increased level of communication with the FDA during the development process. The benefits of QIDP designation also include eligibility for priority review and an extension by an additional five years of any non-patent market exclusivity period awarded, such as a five-year exclusivity period awarded for a new molecular entity or a three-year market exclusivity period awarded to an applicant whose application relies on new clinical investigations essential to the approval. This extension is in addition to any pediatric exclusivity extension that may be awarded. GAIN Act exclusivity may not be awarded if the indication for which we obtain approval does not meet the definition of a qualified infectious disease product. However, there is limited precedent for understanding the way in which the GAIN Act will be implemented. Receipt of QIDP designation in practice may not result in a faster development process, review or approval compared to drugs considered for approval under conventional FDA procedures, and does not assure ultimate approval by the FDA or related exclusivity benefits.

Fast Track Designation from the FDA may not actually lead to a faster development or regulatory review or approval process.

We received Fast Track Designation from the FDA for D-PLEX₁₀₀ for topical use for the prevention of post-cardiac surgery sternal infections. We may seek Fast Track Designation for future product candidates.

If a product candidate is intended for the treatment of a serious or life-threatening condition and the product candidate demonstrates the potential to address unmet medical needs for this condition, the product sponsor may apply for Fast Track Designation. The FDA has broad discretion whether or not to grant this designation, so even if we believe one of our product candidates is eligible for this designation, we cannot assure you that the FDA would decide to grant it. Even if we do receive Fast Track Designation, such as the Fast Track Designation received for D-PLEX₁₀₀, we may not experience a faster development process, review or approval compared to conventional FDA procedures. The FDA may withdraw Fast Track Designation if it believes that the designation is no longer supported by data from our clinical development program.

Breakthrough therapy designation by the FDA may not lead to a faster development or regulatory review or approval process.

We may seek a breakthrough therapy designation for one or more product candidates. A breakthrough therapy is defined as a product candidate that is intended, alone or in combination with one or more other drugs, to treat a serious or life-threatening disease or condition, and preliminary clinical evidence indicates that the product candidate may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development. For product candidates that have been designated as breakthrough therapies, interaction and communication between the FDA and the sponsor of the trial can help to identify the most efficient path for clinical development while minimizing the number of patients placed in ineffective control regimens. Product candidates designated as breakthrough therapies by the FDA are also eligible for priority review if supported by clinical data at the time of the submission of the BLA.

Designation as a breakthrough therapy is within the discretion of the FDA. Accordingly, even if we believe that one of our product candidates meets the criteria for designation as a breakthrough therapy, the FDA may disagree and instead determine not to make such designation. In any event, the receipt of a breakthrough therapy designation for a product candidate may not result in a faster development

process, review or approval compared to product candidates considered for approval under conventional FDA procedures and it would not assure ultimate approval by the FDA. In addition, even if one or more of our product candidates qualify as breakthrough therapies, the FDA may later decide that the product candidate no longer meets the conditions for qualification or it may decide that the time period for FDA review or approval will not be shortened.

Even if we obtain regulatory approval for a product candidate, our products and business will remain subject to ongoing regulatory obligations and review.

If our product candidates are approved, they will be subject to ongoing regulatory requirements for manufacturing, labeling, packaging, storage, advertising, promotion, sampling, record-keeping, conduct of post-marketing studies and submission of safety, efficacy and other post-market information, including both federal and state requirements in the United States and comparable requirements outside of the United States. Accordingly, we and others with whom we work must continue to expend time, money and effort in all areas of regulatory compliance, including manufacturing, production and quality control.

Any regulatory approvals that we receive for our product candidates may also be subject to limitations on the approved indicated uses for which the product may be marketed or to the conditions of approval, or contain requirements for potentially costly post-marketing testing, including Phase 4 clinical trials, and surveillance to monitor the safety and efficacy of the product candidate. The FDA may also require a REMS as a condition of approval of our product candidates, which could include requirements for a medication guide, physician communication plans or additional elements to ensure safe use, such as restricted distribution methods, patient registries and other risk minimization tools. We will also be required to report certain adverse reactions and production problems, if any, to the FDA, EMA or other regulatory agencies and to comply with requirements concerning advertising and promotion for our products. Promotional communications with respect to prescription drugs are subject to a variety of legal and regulatory restrictions and must be consistent with the information in the product's approved label. As such, we may not promote our products for indications or uses for which they do not have FDA, EMA or other regulatory agency approval. The holder of an approved NDA must also submit new or supplemental applications and obtain FDA approval for certain changes to the approved product, product labeling, or manufacturing process. We could also be asked to conduct post-marketing clinical trials to verify the safety and efficacy of our product candidates in general or in specific patient subsets. An unsuccessful post-marketing trial or failure to complete such a clinical trial could result in the withdrawal of marketing approval. Furthermore, any new legislation addressing drug safety issues could result in delays in product development or commercialization or increased costs to assure compliance. Foreign regulatory authorities impose similar requirements. If a regulatory agency discovers previously unknown problems with a product, such as adverse events of unanticipated severity or frequency, or disagrees with the promotion, marketing or labeling of a product, such regulatory agency may impose restrictions on that product or us, including requiring withdrawal of the product from the market. If we fail to comply with applicable regulatory requirements, a regulatory agency or enforcement authority may, among other things:

Any government investigation of alleged violations of law could require us to expend significant time and resources in response and could generate negative publicity. Any failure to comply with ongoing regulatory requirements may significantly and adversely affect our ability to commercialize and generate revenue from our product candidates. If regulatory sanctions are applied or if regulatory approval is withdrawn, the value of our company and our operating results will be adversely affected.

The FDA's and other regulatory authorities' policies may change and additional government regulations may be enacted that could prevent, limit or delay regulatory approval of our product candidates. If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or if we are not able to maintain regulatory compliance, we may lose any marketing approval that we may have obtained and we may not achieve or sustain profitability, which would adversely affect our business, prospects, financial condition and results of operations.

We also cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or administrative or executive action, either in the United States or abroad. For example, certain policies of the Trump administration may impact our business and industry. Namely, the Trump administration has taken several executive actions, including the issuance of a number of Executive Orders, that could impose significant burdens on, or otherwise materially delay, the FDA's ability to engage in routine regulatory and oversight activities such as implementing statutes through rulemaking, issuance of guidance, and review and approval of marketing applications. It is difficult to predict how these Executive Orders will be implemented, and the extent to which they will impact the FDA's ability to exercise its regulatory authority. If these executive actions impose constraints on FDA's ability to engage in oversight and implementation activities in the normal course, our business may be negatively impacted.

Disruptions at the FDA and other government agencies caused by funding shortages or global health concerns could hinder their ability to hire, retain or deploy key leadership and other personnel, or otherwise prevent new or modified products from being developed, approved or commercialized in a timely manner or at all, which could negatively impact our business.

The ability of the FDA to review and approve new products can be affected by a variety of factors, including government budget and funding levels, statutory, regulatory, and policy changes, the FDA's ability to hire and retain key personnel and accept the payment of user fees, and other events that may otherwise affect the FDA's ability to perform routine functions. Average review times at the agency have fluctuated in recent years as a result. In addition, government funding of other government agencies that fund research and development activities is subject to the political process, which is inherently fluid and unpredictable. Disruptions at the FDA and other agencies may also slow the time necessary for new drugs or modifications to approved drugs to be reviewed and/or approved by necessary government agencies, which would adversely affect our business. For example, over the last several years, including for 35 days beginning on December 22, 2018, the U.S. government has shut down several times and certain regulatory agencies, such as the FDA, have had to furlough critical FDA employees and stop critical activities.

Separately, in response to the COVID-19 pandemic, on March 10, 2020 the FDA announced its intention to postpone most foreign inspections of manufacturing facilities and subsequently, on March 18, 2020, the FDA announced its intention to temporarily postpone routine surveillance inspections of domestic manufacturing facilities. Regulatory authorities outside the United States may adopt similar restrictions or other policy measures in response to the COVID-19 pandemic.

If a prolonged government shutdown occurs, or if global health concerns continue to prevent the FDA or other regulatory authorities from conducting their regular inspections, reviews, or other regulatory activities, it could significantly impact the ability of the FDA or other regulatory authorities to timely review and process our regulatory submissions, which could have a material adverse effect on our business.

We may be subject, directly or indirectly, to U.S. federal and state healthcare fraud and abuse laws, false claims laws, physician payment transparency laws and health information privacy and security laws. If we are unable to comply, or have not fully complied, with such laws, we could face substantial penalties.

Our current and future operations may be directly or indirectly through our relationships with U.S. healthcare providers, patients and other persons and entities, subject to broadly applicable fraud and abuse and other healthcare laws and regulations that may constrain our business or financial arrangements and relationships through which we research, market, sell and distribute our products in the United States. In addition, we may be subject to patient privacy regulation by both the federal government and the states in which we conduct our business. The laws that may affect our ability to operate include:

Many states have analogous state laws and regulations, such as state anti-kickback and false claims laws, that may apply to our business practices, including but not limited to, research, distribution, sales or marketing arrangements and claims involving healthcare items or services reimbursed by non-governmental third-party payors, including private insurers. In addition, certain states require pharmaceutical companies to comply with the pharmaceutical industry's voluntary compliance guidelines and the relevant compliance guidance promulgated by the U.S. federal government. Certain states and local jurisdictions require drug manufacturers to report information related to payments and other transfers of value to physicians and other healthcare providers and register pharmaceutical sales representatives. Additionally, certain states also require pharmaceutical companies to file reports relating to pricing information or marketing expenditures and have laws governing the privacy and security of health information in certain circumstances, many of which differ from each other in significant ways and may not have the same effect, thus complicating compliance efforts.

Because of the breadth of these laws and the narrowness of the statutory exceptions and safe harbors available, it is possible that some of our business activities could be subject to challenge under one or more of such laws. In addition, the ACA has strengthened these laws. For example, recent health care reform legislation, has among other things, amended the intent requirement of the U.S. Anti-Kickback statute and certain criminal healthcare fraud statutes. A person or entity no longer needs to have actual knowledge of this statute or specific intent to violate it. Moreover, the ACA provides that the government may assert that a claim including items or services resulting from a violation of the federal anti-kickback statute constitutes a false or fraudulent claim for purposes of the False Claims Act.

Ensuring that our internal operations and business arrangements with third parties comply with applicable healthcare laws and regulations will likely be costly. It is possible that governmental authorities will conclude that our business practices, including arrangements we may have with physicians and other healthcare providers, some of whom may receive stock options as compensation for services provided, do not comply with current or future statutes, regulations or case law involving applicable fraud and abuse or other healthcare laws and regulations. If our operations were found to be in violation of any of these laws or any other governmental regulations that may apply to us, we may be subject to significant civil, criminal and administrative penalties, damages, fines, disgorgement, imprisonment, possible exclusion from government funded healthcare programs, contractual damages, reputational harm, diminished profits and future earnings, additional reporting obligations and oversight if we become subject to a corporate integrity agreement or other agreement to resolve allegations of non-compliance with these laws, and curtailment of our operations, any of which could substantially disrupt our operations. If the physicians or other providers or entities with whom we expect to do business are found not to be in compliance with applicable laws, they may be subject to criminal, civil or administrative sanctions, including exclusions from government funded healthcare programs.

Legislative or regulatory healthcare reforms in the United States may make it more difficult and costly for us to obtain regulatory clearance or approval of our product candidates and to produce, market and distribute our products after clearance or approval is obtained.

From time to time, legislation is drafted and introduced in Congress that could significantly change the statutory provisions governing the regulatory clearance or approval, manufacture and marketing of regulated products or the reimbursement thereof. In addition, FDA regulations and guidance are often revised or reinterpreted by the FDA in ways that may significantly affect our business and our products. Any new regulations or revisions or reinterpretations of existing regulations may impose additional costs or lengthen review times of our product candidates. We cannot determine what effect changes in regulations, statutes, legal interpretation or policies, when and if promulgated, enacted or adopted may have on our business in the future. Such changes could, among other things, require:

In addition, in the United States, there have been a number of legislative and regulatory proposals to change the health care system in ways that could affect our ability to sell our products profitably. The pharmaceutical industry in the United States, as an example, has been affected by the passage of the ACA, which, among other things, imposed new fees on entities that manufacture or import certain branded prescription drugs and expanded pharmaceutical manufacturer obligations to provide discounts and rebates to certain government programs. There remain judicial and Congressional challenges to certain aspects of the ACA, as well as efforts by the Trump administration to repeal or replace certain aspects of the ACA. Concurrently, Congress has considered legislation that would repeal or repeal and replace all or part of the ACA. While Congress has not passed comprehensive repeal legislation, several bills affecting the implementation of certain taxes under the ACA have been enacted. The Tax Cuts and Jobs Act of 2017 includes a provision repealing, effective January 1, 2019, the tax-based shared responsibility payment imposed by the ACA on certain individuals who fail to maintain qualifying health coverage for all or part of a year that is commonly referred to as the "individual mandate". In addition, the 2020 federal spending package permanently eliminated, effective January 1,

2020, the ACA-mandated "Cadillac" tax on high-cost employer-sponsored health coverage and medical device tax and, effective January 1, 2021, also eliminates the health insurer tax. On December 14, 2018, a Texas U.S. District Court Judge ruled that the ACA is unconstitutional in its entirety because the "individual mandate" was repealed by Congress as part of the Tax Act. Additionally, on December 18, 2019, the U.S. Court of Appeals for the 5th Circuit upheld the District Court ruling that the individual mandate was unconstitutional and remanded the case back to the District Court to determine whether the remaining provisions of the ACA are invalid as well. On March 2, 2020, the United States Supreme Court granted the petitions for writs of certiorari to review this case, and has allotted one hour for oral arguments, which are expected to occur in the fall. It is unclear how such litigation and other efforts to repeal and replace the ACA will impact the ACA and our business.

Further, there has been particular and increasing legislative and enforcement interest in the United States with respect to drug pricing practices in recent years, particularly with respect to drugs that have been subject to relatively large price increases over relatively short time periods. There have been several recent U.S. Congressional inquiries and proposed bills designed to, among other things, bring more transparency to drug pricing, reduce the cost of prescription drugs under Medicare, review the relationship between pricing and manufacturer patient programs, and reform government program reimbursement methodologies for drugs. At the federal level, the Trump administration's budget proposal for fiscal year 2021 includes a $135 billion allowance to support legislative proposals seeking to reduce drug prices, increase competition, lower out-of-pocket drug costs for patients, and increase patient access to lower-cost generic and biosimilar drugs. On March 10, 2020, the Trump administration sent "principles" for drug pricing to Congress, calling for legislation that would, among other things, cap Medicare Part D beneficiary out-of-pocket pharmacy expenses, provide an option to cap Medicare Part D beneficiary monthly out-of-pocket expenses, and place limits on pharmaceutical price increases. Further, the Trump administration previously released a "Blueprint" to lower drug prices and reduce out of pocket costs of drugs that contained proposals to increase drug manufacturer competition, increase the negotiating power of certain federal healthcare programs, incentivize manufacturers to lower the list price of their products, and reduce the out of pocket costs of drug products paid by consumers. The Department of Health and Human Services, or HHS, has solicited feedback on some of these measures and has implemented others under its existing authority. For example, in May 2019, the Centers for Medicare & Medicaid Services, or CMS, issued a final rule to allow Medicare Advantage plans the option to use step therapy for Part B drugs beginning January 1, 2020. This final rule codified CMS's policy change that was effective January 1, 2019. While some of these and other measures may require additional authorization to become effective, Congress and the Trump administration have each indicated that it will continue to seek new legislative and/or administrative measures to control drug costs. Individual states in the United States have also become increasingly active in passing legislation and implementing regulations designed to control pharmaceutical product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and in some cases, designed to encourage importation from other countries and bulk purchasing. In the future, there will likely continue to be proposals relating to the reform of the U.S. healthcare system, some of which could further limit coverage and reimbursement of drug products, including our product candidates. It is possible that additional governmental action is taken to address the COVID-19 pandemic, but there can be no certainty regarding what, if any, such action may be. Any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from private payors. Our results of operations could be adversely affected by the ACA and by other health care reforms that may be enacted or adopted in the future.

We face intense competition in an environment of rapid technological change and the possibility that our competitors may develop products and drug delivery systems that are similar, more advanced or more effective than ours, which may adversely affect our financial condition and our ability to successfully market or commercialize our product candidates.

The pharmaceutical industry in which we operate is intensely competitive and subject to rapid and significant technological change. We are currently aware of various existing therapies in the market and in development that may in the future compete with our product candidates, including other therapies that address the management of SSIs, as well as other drug delivery mechanisms that utilize polymer and/or lipid technology to deliver APIs at the local level. Other approaches may also emerge for the prevention or treatment of any of the indications on which we focus, and new technologies may emerge in localized drug delivery.

We have competitors both in the United States and internationally, including major multinational pharmaceutical companies and specialty pharmaceutical companies. Our competitors may succeed in developing, acquiring or licensing on an exclusive basis products that are more effective or less costly than any product candidate that we may develop, or achieve earlier patent protection, regulatory approval, product commercialization and market penetration than we do. Additionally, technologies developed by our competitors may render our potential product candidates uneconomical or obsolete, and we may not be successful in marketing our product candidates against competitors. See "Business—Competition."

Even if we obtain and maintain approval for D-PLEX₁₀₀ or our other product candidates from the FDA, we may never obtain approval outside of the United States, which would limit our market opportunities and adversely affect our business.

Approval of a product candidate in the United States by the FDA does not ensure approval of such product candidate by regulatory authorities in other countries or jurisdictions, and approval by one foreign regulatory authority does not ensure approval by regulatory authorities in other foreign countries or by the FDA. However, the failure to obtain approval from the FDA or other regulatory authorities may negatively impact our ability to obtain approval in other foreign countries. Sales of D-PLEX₁₀₀ or our other product candidates outside of the United States will be subject to foreign regulatory requirements governing clinical trials and marketing approval. Even if the FDA grants marketing approval for a product candidate, comparable regulatory authorities of foreign countries also must approve the manufacturing and marketing of the product candidate in those countries. Approval procedures vary among jurisdictions and can involve requirements and administrative review periods different from, and more onerous than, those in the United States, including additional preclinical studies or clinical trials. In many countries outside the United States, a product candidate must be approved for reimbursement before it can be approved for sale in that country. In some cases, the price that we intend to charge for our product candidates, if approved, is also subject to approval.

We intend to submit a marketing authorization application to the EMA for approval of D-PLEX₁₀₀ in the European Union, but obtaining such approval from the European Commission following the opinion of the EMA is a lengthy and expensive process. Even if a product candidate is approved, the applicable regulatory agency may limit the indications for which the product may be marketed, require extensive warnings on the product labeling or require expensive and time-consuming additional clinical trials or reporting as conditions of approval. Regulatory authorities in countries outside of the United States and the European Union also have requirements for approval of product candidates with which we must comply prior to marketing in those countries. Obtaining foreign regulatory approvals and compliance with foreign regulatory requirements could result in significant delays, difficulties and costs for us and could delay or prevent the introduction of our product candidates in certain countries.

Further, clinical trials conducted in one country may not be accepted by regulatory authorities in other countries. Also, regulatory approval for a product candidate may be withdrawn. If we fail to comply with the regulatory requirements, our target market will be reduced and our ability to realize the full market potential of D-PLEX₁₀₀ or our other product candidates will be harmed and our business, financial condition, results of operations and prospects will be adversely affected.

The misuse or off-label use of our products may harm our reputation in the marketplace, result in injuries that lead to product liability suits or result in costly investigations, fines or sanctions by regulatory bodies if we are deemed to have engaged in the promotion of these uses, any of which could be costly to our business.

Prescription drugs may be promoted only for the approved indications in accordance with the approved label. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off-label uses, and a company that is found to have improperly promoted off-label may be subject to significant liability. If the FDA does not agree that our data support the submission of an NDA seeking approval for the prevention of SSIs generally or SSIs in bone and soft tissue, we intend to seek marketing approval for D-PLEX₁₀₀ for the prevention of sternal SSIs after cardiac surgery and the prevention of SSIs in patients undergoing abdominal surgery. We will train our marketing and sales personnel to not promote our products, if approved, for any off-label uses. We cannot, however, prevent a physician from using our products off-label, when in the physician's independent professional medical judgment he or she deems it appropriate. For example, if we obtain approval of D-PLEX₁₀₀ for the prevention of sternal SSIs after cardiac surgery and/or the prevention of SSIs in patients undergoing abdominal surgery, physicians may nevertheless decide to use D-PLEX₁₀₀ in an attempt to prevent infections in connection with other types of surgeries, and there may be increased risk of injury to patients if physicians attempt to use our products for these uses for which they are not approved. While the FDA does not regulate the behavior of physicians in their choice of treatments, the FDA does restrict manufacturer's communications on the subject of off-label use of their products. Furthermore, the use of our products for indications other than those approved by the FDA or any foreign regulatory body may not effectively treat such conditions, which could harm our reputation in the marketplace among physicians and patients.

If the FDA, EMA or any foreign regulatory body determines that our promotional materials or training constitute promotion of an off-label use, it could request that we modify our training or promotional materials or subject us to regulatory or enforcement actions, including the issuance or imposition of an untitled letter, which is used for violators that do not necessitate a warning letter, injunction, seizure, civil fine or criminal penalties. It is also possible that other federal, state or foreign enforcement authorities might take action under other regulatory authority, such as false claims laws, if they consider our business activities to constitute promotion of an off-label use, which could result in significant penalties, including, but not limited to, criminal, civil and administrative penalties, damages, fines, disgorgement, exclusion from participation in government healthcare programs and the curtailment of our operations.

We rely on third parties to conduct certain elements of our preclinical studies and clinical trials and perform other tasks for us. If these third parties do not successfully carry out their contractual duties, meet expected deadlines or comply with regulatory requirements, we may not be able to obtain regulatory approval for or commercialize our product candidates.

We have relied upon, and plan to continue to rely upon, third-party vendors, including CROs, to monitor and manage data for our ongoing preclinical studies and clinical trials. If our CROs do not successfully carry out their contractual duties or obligations or meet expected deadlines, if they need to be replaced or if the quality or accuracy of the clinical data they obtain is compromised due to the

failure to adhere to our clinical protocols, regulatory requirements or for other reasons, our clinical trials may be extended, delayed or terminated, and we may not be able to obtain regulatory approval for or successfully commercialize our product candidates. We rely on these CROs for execution of our preclinical studies and clinical trials, and we control only certain aspects of their activities. Nevertheless, we are responsible for ensuring that each of our studies is conducted in accordance with the applicable protocol, legal, regulatory and scientific standards, and our reliance on the vendors and CROs does not relieve us of our regulatory responsibilities. We and our CROs and other vendors are required to comply with good clinical practice, cGMP, the Helsinki Declaration, the International Conference on Harmonization Guideline for Good Clinical Practice, applicable European Commission Directives on Clinical Trials, laws and regulations applicable to clinical trials conducted in other territories, and good laboratory practices, or GLP, which are regulations and guidelines enforced by the FDA, the Competent Authorities of the Member States of the European Economic Area, or EEA, and comparable foreign regulatory authorities for all of our product candidates in clinical development. Regulatory authorities enforce these regulations through periodic inspections of study sponsors, principal investigators, study sites and other contractors. If we or any of our CROs or vendors fail to comply with applicable regulations, including GCP and cGMP regulations, the clinical data generated in our clinical studies may be deemed unreliable and the FDA, EMA or comparable foreign regulatory authorities may require us to perform additional clinical trials before approving our marketing applications. Our failure to comply with these regulations may require us to repeat clinical trials, which would delay the regulatory approval process.

If any of our relationships with these third-party CROs or vendors terminate, we may not be able to enter into arrangements with alternative CROs or vendors or do so on commercially reasonable terms. In addition, our CROs are not our employees, and, except for remedies available to us under our agreements with such CROs, we cannot control whether or not they devote sufficient time and resources to our ongoing clinical, nonclinical and preclinical programs. If CROs do not successfully carry out their contractual duties or obligations or meet expected deadlines, if they need to be replaced or if the quality or accuracy of the clinical data they obtain is compromised due to the failure to adhere to our clinical protocols, regulatory requirements or for other reasons, our clinical trials may be extended, delayed or terminated, and we may not be able to obtain regulatory approval for or successfully commercialize our product candidates. CROs may also generate higher costs than anticipated, which could adversely affect our results of operations and the commercial prospects for our product candidates, increase our costs and delay our ability to generate revenue.

Replacing or adding additional CROs involves additional cost and requires management time and focus. In addition, there is a natural transition period when a new CRO commences work. As a result, delays occur, which can materially impact our ability to meet our desired clinical development timelines. Though we carefully manage our relationships with our CROs, we may encounter similar challenges or delays in the future, which could have a material adverse impact on our business, financial condition and prospects.

Independent clinical investigators and CROs that we engage to conduct our clinical trials may not devote sufficient time or attention to our clinical trials or be able to repeat their past success.

We expect to continue to depend on third parties, including independent clinical investigators and CROs, to conduct our clinical trials. CROs may also assist us in the collection and analysis of data. There is a limited number of third-party service providers and vendors that specialize or have the expertise required to achieve our business objectives. Identifying, qualifying and managing performance of third-party service providers can be difficult, time consuming and cause delays in our development programs.

These investigators and CROs will not be our employees and we will not be able to control, other than through contract, the amount of resources, including time, which they devote to our product

candidates and clinical trials. If independent investigators or CROs fail to devote sufficient resources to the development of our product candidates, or if their performance is substandard, it may delay or compromise the prospects for approval and commercialization of any product candidates that we develop. Further, the performance of our CROs may also be interrupted by the ongoing COVID-19 pandemic, including due to travel or quarantine policies, heightened exposure of CRO staff who are healthcare providers to COVID-19 patients or prioritization of resources toward the COVID-19 pandemic.

Investigators for our clinical trials may serve as scientific advisors or consultants to us from time to time and receive compensation in connection with such services. Under certain circumstances, we may be required to report some of these relationships to the FDA or other regulatory authorities. The FDA or other regulatory authorities may conclude that a financial relationship between us and an investigator has created a conflict of interest or otherwise affected interpretation of the trial. The FDA or other regulatory authorities may therefore question the integrity of the data generated at the applicable clinical trial site and the utility of the clinical trial itself may be jeopardized. This could result in a delay in approval or rejection of our marketing applications by the FDA or other regulatory authorities, as the case may be, and may ultimately lead to the denial of marketing approval of one or more of our product candidates.

In addition, the use of third-party service providers requires us to disclose our proprietary information to these parties, which could increase the risk that this information will be misappropriated. Further, the FDA and other regulatory authorities require that we comply with standards, commonly referred to as GCP, for conducting, recording and reporting clinical trials to assure that data and reported results are credible and accurate and that the rights, integrity and confidentiality of trial subjects are protected. Failure of clinical investigators or CROs to meet their obligations to us or comply with GCP procedures could adversely affect the clinical development of our product candidates and harm our business.

We rely on third parties to manufacture the raw materials, including the active pharmaceutical ingredients that we use to create our product candidates. Our business could be harmed if existing and prospective third parties fail to provide us with sufficient quantities of these materials and products or fail to do so at acceptable quality levels or prices.

We rely on third party suppliers for certain raw materials necessary to manufacture our product candidates for our preclinical studies and clinical trials. Some of these raw materials are difficult to source. Because there are a limited number of suppliers for these raw materials, we may need to engage alternate suppliers to prevent a possible disruption of the manufacture of the materials necessary to produce our product candidates for our clinical trials, and if approved, ultimately for commercial sale. In several cases, we rely on a sole provider, and there may be a need to identify additional providers in the future. We do not have any control over the availability of raw materials. If we or our manufacturers are unable to purchase these raw materials on acceptable terms, at sufficient quality levels, or in adequate quantities, if at all, the development and commercialization of our product candidates or any future product candidates, would be delayed or there would be a shortage in supply, which would impair our ability to meet our development objectives for our product candidates or generate revenues from the sale of any approved products.

Even following our establishment of our own cGMP-compliant manufacturing capabilities, we intend to continue to rely on third party suppliers for these raw materials, which will continue to expose us to manufacturing risks including:

Certain of our raw material suppliers will be required to become cGMP-compliant and establish a drug master file for the applicable ingredient before we can submit our NDA for D-PLEX₁₀₀. If these suppliers do not successfully carry out their contractual duties or manufacture our raw materials in accordance with regulatory requirements, we will not be able to submit our NDA as planned or complete, or may be delayed in completing, the clinical trials required for approval of D-PLEX₁₀₀. In such instances, we may need to locate an appropriate replacement third-party relationship, which may not be readily available or on acceptable terms, which would cause additional delay or increased expense prior to the approval of D-PLEX₁₀₀ and would thereby have a material adverse effect on our business, financial condition, results of operations and prospects.

Additionally, we have not yet entered into binding agreements with certain third-party manufacturers to produce the raw materials and products that we use to manufacture our product candidates. Although we intend to rely on third-party manufacturers for the raw materials and products to support the manufacturing of our product candidates for commercialization, we have not yet entered into agreements with certain manufacturers. We may be unable to negotiate binding agreements with the manufacturers to support our commercialization activities at commercially reasonable terms.

Although we have established our own manufacturing facility, we may utilize third parties as needed to conduct our product manufacturing. Therefore, we are subject to the risk that this third party may not perform satisfactorily.

Although we expect that our manufacturing facility will be the primary source of clinical and commercial supply for D-PLEX₁₀₀ for at least the first 30 months following a commercial launch, if approved, we intend to evaluate potential third-party manufacturing capabilities if necessary to meet further commercial demand. In the event that we engage third-party manufacturers and they do not successfully carry out their contractual duties, meet expected deadlines or manufacture D-PLEX₁₀₀ in accordance with regulatory requirements or if there are disagreements between us and any third-party manufacturer, we may be delayed in producing sufficient clinical and commercial supply of D-PLEX₁₀₀ or other product candidates. In such instances, we may need to locate an appropriate replacement third-party relationship, which may not be readily available or on acceptable terms, which would cause additional delay or increased expense and would thereby have a material adverse effect on our business, financial condition, results of operations and prospects.

The manufacture of pharmaceutical products is complex and requires significant expertise and capital investment, including the development of advanced manufacturing techniques and process controls. We and our contract manufacturers must comply with cGMP requirements. In the event that our contract manufacturers fail to meet cGMP requirements, we may be delayed or unable to supply our products. In addition, manufacturers of pharmaceutical products often encounter difficulties in production, particularly in scaling up and validating initial production and contamination controls. These problems include difficulties with production costs and yields, quality control, including stability of the product, quality assurance testing, operator error, shortages of qualified personnel, as well as compliance with strictly enforced federal, state and foreign regulations. Furthermore, if microbial, viral or other contaminations are discovered in our product candidates or in the manufacturing facilities in which our product candidates are made, such manufacturing facilities may need to be closed for an extended period of time to investigate and remedy the contamination.

We also rely on third party manufacturers to conduct quality control reviews of and sterilization services for our product candidates or any approved products. We cannot assure you that any stability,

sterility or other issues relating to the manufacture of any of our product candidates or any approved products will not occur in the future.

Additionally, our third-party manufacturers may experience manufacturing difficulties due to resource constraints or as a result of labor disputes or unstable political environments. If our third-party manufacturers were to encounter any of these difficulties, our ability to provide any products to patients, once approved, would be jeopardized. Any adverse developments affecting commercial manufacturing may result in shipment delays, inventory shortages, lot failures, product withdrawals or recalls or other interruptions in the supply of an approved product. We may also have to take inventory write-offs and incur other charges and expenses for products that fail to meet specifications, undertake costly remediation efforts or seek more costly manufacturing alternatives. Accordingly, failures or difficulties faced at any level of our supply chain could materially adversely affect our business and delay and could have a material adverse effect on our business, prospects, financial condition and results of operations. Some of these events could be the basis for FDA action, including injunction, recall, seizure or total or partial suspension of product manufacture.

Our reliance on third parties requires us to share our trade secrets and intellectual property, which increases the possibility that a competitor will discover them or that our trade secrets and intellectual property will be misappropriated or disclosed.

Because we rely on third parties to provide us with the materials that we use to develop and, if appropriate in the future, manufacture our product candidates or approved products, we may, at times, share trade secrets and intellectual property with such third parties. We seek to protect our proprietary technology in part by entering into confidentiality agreements and, if applicable, material transfer agreements, collaborative research agreements, consulting agreements, or other similar agreements with our collaborators, advisors, employees and consultants prior to beginning research or disclosing proprietary information. These agreements typically limit the rights of the third parties to use or disclose our confidential information, such as trade secrets and intellectual property. Despite the contractual provisions employed when working with third parties, the need to share trade secrets and other confidential information increases the risk that such trade secrets become known by our competitors, are inadvertently incorporated into the technology of others, or are disclosed or used in violation of these agreements. Given that our proprietary position is based, in part, on our know-how and trade secrets, a competitor's discovery of our trade secrets or other unauthorized use or disclosure would impair our competitive position and may have a material adverse effect on our business.

Despite our efforts to protect our trade secrets, our competitors may discover our trade secrets, either through breach of these agreements, independent development or publication of information including our trade secrets by third parties. A competitor's discovery of our trade secrets would impair our competitive position and have an adverse impact on our business, financial condition, results of operations and prospects.

If we are unable to obtain and maintain effective patent rights for our product candidates or any future product candidates, we may not be able to compete effectively in our markets. If we are unable to protect the confidentiality of our trade secrets or know-how, such proprietary information may be used by others to compete against us.

We rely upon a combination of patents, trade secret protection and confidentiality agreements to protect the intellectual property related to our technologies and product candidates. Our success depends in large part on our ability to obtain and maintain patent and other intellectual property protection in the United States and in other countries with respect to our proprietary technology and product candidates.

We have sought to protect our proprietary position by filing patent applications in the United States and in other countries, with respect to our novel technologies and product candidates, which are important to our business. Patent prosecution is expensive and time consuming, and we may not be able to file and prosecute all necessary or desirable patent applications at a reasonable cost or in a timely manner. It is also possible that we will fail to identify patentable aspects of our research and development output before it is too late to obtain patent protection.

As of May 31, 2020, our portfolio of owned patents and patent applications consists of seven families that protect our technology, including 79 issued patents, including utility and composition of matter patents, four allowed patent applications and 32 pending patent applications in jurisdictions in the United States, the European Patent Office, Canada, Australia, China, Japan, Israel, Brazil, the Eurasian Patent Organization, India, Mexico, New Zealand, the Philippines, Singapore, South Korea and Thailand. We cannot offer any assurances about which, if any, patents will issue, the breadth of any such patent or whether any issued patents will be found invalid and unenforceable or will be threatened by third parties. Any successful opposition to these patents or any other patents owned by or licensed to us after patent issuance could deprive us of rights necessary for the successful commercialization of any product candidates that we may develop. Further, if we encounter delays in regulatory approvals, the period of time during which we could market a product candidate under patent protection could be reduced.

Further, the patent position of pharmaceutical companies generally is highly uncertain and involves complex legal and factual questions for which legal principles remain unsolved. This renders the patent prosecution process particularly expensive and time-consuming. There is no assurance that all potentially relevant prior art relating to our patent applications has been found, which can invalidate a patent or prevent a patent from issuing from a pending patent application. Even if patents do successfully issue, and even if such patents cover our product candidates, third parties may challenge their validity, enforceability, or scope, which may result in such patents being narrowed, found unenforceable or invalidated. Furthermore, even if they are unchallenged, our patent applications and any future patents may not adequately protect our intellectual property, provide exclusivity for our product candidates, or prevent others from designing around our claims. Any of these outcomes could impair our ability to prevent competition from third parties, which may have an adverse impact on our business.

If we cannot obtain and maintain effective patent rights for our product candidates, we may not be able to compete effectively, and our business and results of operations would be harmed.

We may not have sufficient patent lifespan to effectively protect our products and business.

Patents have a limited lifespan. In the United States, the natural expiration of a patent is generally 20 years after its priority date. Although various extensions may be available, including pursuant to the QIDP designations we have received for D-PLEX₁₀₀, the life of a patent, and the protection it affords, is limited. Even if any of our patent applications mature into issued patents, if we do not have sufficient patent terms or regulatory exclusivity to protect our products, our business and results of operations will be adversely affected.

Patent policy and rule changes could increase the uncertainties and costs surrounding the prosecution of our patent applications and the enforcement or defense of any issued patents.

Changes in either the patent laws or interpretation of the patent laws in the United States and other countries may diminish the value of any patents that may issue from our patent applications, or narrow the scope of our patent protection. The laws of foreign countries may not protect our rights to the same extent as the laws of the United States. Publications of discoveries in the scientific literature often lag behind the actual discoveries, and patent applications in the United States and other

jurisdictions are typically not published until 18 months after filing, or in some cases not at all. We therefore cannot be certain that we or our licensors were the first to make the invention claimed in our owned and licensed patent or pending applications, or that we or our licensor were the first to file for patent protection of such inventions. Assuming the other requirements for patentability are met, for United States patent applications filed prior to March 15, 2013, the first to conceive a claimed invention is entitled to the patent, while outside the United States, the first to file a patent application is entitled to the patent. After March 15, 2013, under the Leahy-Smith America Invents Act, or the AIA, enacted on September 16, 2011, the United States has moved to a first to file system. The AIA also includes a number of significant changes that affect the way patent applications are prosecuted and may also affect patent litigation. The effects of these changes are currently unclear as the United States Patent and Trademark Office, or the USPTO, must still implement various regulations, the courts have yet to address many of these provisions and the applicability of the AIA and new regulations on specific patents discussed herein have not been determined and would need to be reviewed. In general, the AIA and its implementation could increase the uncertainties and costs surrounding the prosecution of our patent applications and the enforcement or defense of any issued patents, all of which could have a material adverse effect on our business and financial condition.

If our trademarks and trade names are not adequately protected, then we may not be able to build name recognition in our markets of interest and our business may be adversely affected.

Our registered or unregistered trademarks or trade names may be challenged, infringed, circumvented or declared generic or determined to be infringing on other marks. We may not be able to protect our rights to these trademarks and trade names, which we need to build name recognition by potential partners or customers in our markets of interest. Over the long term, if we are unable to establish name recognition based on our trademarks and trade names, then we may not be able to compete effectively and our business may be adversely affected. If other entities use trademarks similar to ours in different jurisdictions, or have senior rights to ours, it could interfere with our use of our current trademarks throughout the world.

If we are unable to maintain effective proprietary rights for our product candidates or any future product candidates, we may not be able to compete effectively in our markets.

In addition to the protection afforded by any patents that have been or may be granted, we rely on trade secret protection and confidentiality agreements to protect proprietary know-how that is not patentable or that we elect not to patent, processes for which patents are difficult to enforce and any other elements of our product candidate discovery and development processes that involve proprietary know-how, information or technology that is not covered by patents. However, trade secrets can be difficult to protect. We seek to protect our proprietary technology and processes, in part, by entering into confidentiality agreements with our employees, consultants, scientific advisors and contractors. We also seek to preserve the integrity and confidentiality of our data, trade secrets and intellectual property by maintaining the physical security of our premises and physical and electronic security of our information technology systems. While we have confidence in these individuals, organizations and systems, agreements or security measures may be breached, and we may not have adequate remedies for any breach. In addition, our trade secrets and intellectual property may otherwise become known or be independently discovered by competitors.

Although we expect all of our employees and consultants to assign their inventions to us, and all of our employees, consultants, advisors and any third parties who have access to our proprietary know-how, information, or technology to enter into confidentiality agreements, we cannot provide any assurances that all such agreements have been duly executed or that our trade secrets and other confidential proprietary information will not be disclosed or that competitors will not otherwise gain access to our trade secrets or independently develop substantially equivalent information and

techniques. Misappropriation or unauthorized disclosure of our trade secrets and intellectual property could impair our competitive position and may have a material adverse effect on our business. Additionally, if the steps taken to maintain our trade secrets and intellectual property are deemed inadequate, we may have insufficient recourse against third parties for misappropriating the trade secret.

Intellectual property rights of third parties could adversely affect our ability to commercialize our product candidates, and we might be required to litigate or obtain licenses from third parties in order to develop or market our product candidate. Such litigation or licenses could be costly or not available on commercially reasonable terms.

It is inherently difficult to conclusively assess our freedom to operate without infringing on third party rights. Our competitive position may suffer if patents issued to third parties or other third party intellectual property rights cover our product candidates or elements thereof, or our manufacturing or uses relevant to our development plans. In such cases, we may not be in a position to develop or commercialize products or our product candidates unless we successfully pursue litigation to nullify or invalidate the third party intellectual property right concerned, or enter into a license agreement with the intellectual property right holder, if available on commercially reasonable terms. There may also be pending patent applications that if they result in issued patents, could be alleged to be infringed by our product candidates. If such an infringement claim should be brought and be successful, we may be required to pay substantial damages, be forced to abandon our product candidates or seek a license from any patent holders. No assurances can be given that a license will be available on commercially reasonable terms, if at all.

It is also possible that we have failed to identify relevant third party patents or applications. For example, U.S. applications filed before November 29, 2000 and certain U.S. applications filed after that date that will not be filed outside the U.S. remain confidential until patents issue. Patent applications in the U.S. and elsewhere are published approximately 18 months after the earliest filing to which priority is claimed, with such earliest filing date being commonly referred to as the priority date. Therefore, patent applications covering our product candidates or platform technology could have been filed by others without our knowledge. Additionally, pending patent applications which have been published can, subject to certain limitations, be later amended in a manner that could cover our platform technologies, our product candidates or the use of our product candidates. Third party intellectual property right holders may also actively bring infringement claims against us. We cannot guarantee that we will be able to successfully settle or otherwise resolve such infringement claims. If we are unable to successfully settle future claims on terms acceptable to us, we may be required to engage in or continue costly, unpredictable and time-consuming litigation and may be prevented from or experience substantial delays in pursuing the development of and/or marketing of our product candidates. If we fail in any such dispute, in addition to being forced to pay damages, we may be temporarily or permanently prohibited from commercializing our product candidates that are held to be infringing. We might, if possible, also be forced to redesign our product candidates so that we no longer infringe the third party intellectual property rights. Any of these events, even if we were ultimately to prevail, could require us to divert substantial financial and management resources that we would otherwise be able to devote to our business.

Third-party claims of intellectual property infringement may prevent or delay our development and commercialization efforts.

Our commercial success depends in part on our avoiding infringement of the patents and proprietary rights of third parties. There have been many lawsuits and other proceedings involving patent and other intellectual property rights in the biotechnology and pharmaceutical industries, including patent infringement lawsuits, interferences, oppositions and reexamination proceedings before

the USPTO and corresponding foreign patent offices. Numerous U.S. and foreign issued patents and pending patent applications, which are owned by third parties, exist in the fields in which we are developing product candidates. As the pharmaceutical industry expands and more patents are issued, the risk increases that our product candidates may be subject to claims of infringement of the patent rights of third parties.

Third parties may assert that we are employing their proprietary technology without authorization. There may be third-party patents or patent applications with claims to materials, formulations, methods of manufacture, or methods for treatment related to the use or manufacture of our product candidates. Because patent applications can take many years to issue, there may be currently pending patent applications that may later result in issued patents that our product candidates may infringe. In addition, third parties may obtain patents in the future and claim that use of our technologies infringes upon these patents. If any third-party patents were held by a court of competent jurisdiction to cover the manufacturing process of any of our product candidates, any materials formed during the manufacturing process or any final product itself, the holders of any such patents may be able to block our ability to commercialize such product candidates unless we obtain a license under the applicable patents, or until such patents expire or are finally determined to be invalid or unenforceable.

Similarly, if any third-party patents were held by a court of competent jurisdiction to cover aspects of our formulations, processes for manufacture, or methods of use, the holders of any such patents may be able to block our ability to develop and commercialize the applicable product candidate unless we obtain a license or until such patent expires or is finally determined to be invalid or unenforceable. In either case, such a license may not be available on commercially reasonable terms or at all.

Parties making claims against us may obtain injunctive or other equitable relief, which could effectively block our ability to further develop and commercialize one or more of our product candidates. Defense of these claims, regardless of their merit, would involve substantial litigation expense and would be a substantial diversion of employee resources from our business. In the event of a successful claim of infringement against us, we may have to pay substantial damages, including treble damages and attorneys' fees for willful infringement, pay royalties, redesign our infringing products or obtain one or more licenses from third parties, which may be impossible or require substantial time and monetary expenditure.

We may not be successful in obtaining or maintaining necessary rights to our product candidates through acquisitions and in-licenses.

Because our programs may require the use of proprietary rights held by third parties, the growth of our business will likely depend in part on our ability to acquire, in-license, or use these proprietary rights. In addition, our product candidates may require specific formulations to work effectively and efficiently and the rights to these formulations may be held by others. We may be unable to acquire or in-license any compositions, methods of use, processes, or other third-party intellectual property rights from third parties that we identify as necessary for our product candidates. The licensing and acquisition of third-party intellectual property rights is a competitive area, and a number of more established companies are also pursuing strategies to license or acquire third-party intellectual property rights that we may consider attractive. These established companies may have a competitive advantage over us due to their size, cash resources, and greater clinical development and commercialization capabilities.

For example, we sometimes collaborate with academic institutions to accelerate our preclinical research or development under written agreements with these institutions. Typically, these institutions provide us with an option to negotiate a license to any of the institution's rights in technology resulting from the collaboration. Regardless of such option, we may be unable to negotiate a license within the specified timeframe or under terms that are acceptable to us. If we are unable to do so, the institution may offer the intellectual property rights to other parties, potentially blocking our ability to pursue our program.

In addition, companies that perceive us to be a competitor may be unwilling to assign or license rights to us. We also may be unable to license or acquire third-party intellectual property rights on terms that would allow us to make an appropriate return on our investment. If we are unable to successfully obtain rights to required third-party intellectual property rights, we may have to abandon development of that program and our business and financial condition could suffer.

We may be involved in lawsuits to protect or enforce our intellectual property, which could be expensive, time consuming and unsuccessful.

Competitors may infringe our intellectual property or that of our licensors that we may acquire in the future. If we or a future licensing partner were to initiate legal proceedings against a third party to enforce a patent covering one of our product candidates, the defendant could counterclaim that the patent covering our product candidate is invalid and/or unenforceable. In patent litigation in the United States, defendant counterclaims alleging invalidity and/or unenforceability are commonplace. Grounds for a validity challenge could be an alleged failure to meet any of several statutory requirements, including lack of novelty, obviousness, or non-enablement. Grounds for an unenforceability assertion could be an allegation that someone connected with prosecution of the patent withheld relevant information from the USPTO, or made a misleading statement, during prosecution. Under the AIA, the validity of U.S. patents may also be challenged in post-grant proceedings before the USPTO. The outcome following legal assertions of invalidity and unenforceability is unpredictable.

Interference proceedings provoked by third parties or brought by us or declared by the USPTO may be necessary to determine the priority of inventions with respect to our patent or patent applications or those of our licensors. An unfavorable outcome could require us to cease using the related technology or to attempt to license rights to it from the prevailing party. Our business could be harmed if the prevailing party does not offer us a license on commercially reasonable terms. Our defense of litigation or interference proceedings may fail and, even if successful, may result in substantial costs and distract our management and other employees. In addition, the uncertainties associated with litigation could have a material adverse effect on our ability to raise the funds necessary to continue our clinical trials, continue our research programs, license necessary technology from third parties, or enter into development partnerships that would help us bring our product candidates to market.

Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential information could be compromised by disclosure during this type of litigation. There could also be public announcements of the results of hearings, motions, or other interim proceedings or developments. If securities analysts or investors perceive these results to be negative, it could have a material adverse effect on the price of our ordinary shares.

We may be subject to claims that our employees, consultants, or independent contractors have wrongfully used or disclosed confidential information of third parties or that our employees have wrongfully used or disclosed alleged trade secrets of their former employers.

We employ individuals who were previously employed at universities or other biotechnology or pharmaceutical companies, including our competitors or potential competitors. Although we try to ensure that our employees, consultants and independent contractors do not use the proprietary information or know-how of others in their work for us, we may be subject to claims that we or our employees, consultants, or independent contractors have inadvertently or otherwise used or disclosed intellectual property, including trade secrets or other proprietary information, of any of our employees' former employers or other third parties. Litigation may be necessary to defend against these claims. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights or personnel, which could adversely impact our business. Even if we are

successful in defending against such claims, litigation could result in substantial costs and be a distraction to management and other employees.

We may be subject to claims challenging the inventorship of our intellectual property.

We may be subject to claims that former employees, collaborators or other third parties have an interest in or right to compensation with respect to our current patent and patent applications, future patents or other intellectual property as an inventor or co-inventor. For example, we may have inventorship disputes arise from conflicting obligations of consultants or others who are involved in developing our product candidates. Litigation may be necessary to defend against these and other claims challenging inventorship or claiming the right to compensation. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights, such as exclusive ownership of, or right to use, valuable intellectual property. Such an outcome could have a material adverse effect on our business. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to management and other employees. To the extent that our employees have not effectively waived the right to compensation with respect to inventions that they helped create, they may be able to assert claims for compensation with respect to our future revenue. As a result, we may receive less revenue from future products if such claims are successful which in turn could impact our future profitability.

Changes in United States and international patent law could diminish the value of patents in general, thereby impairing our ability to protect our products.

Our success is heavily dependent on intellectual property. Obtaining and enforcing patents in the pharmaceutical industry involves both technological and legal complexity. Therefore, obtaining and enforcing these patents is costly, time consuming and inherently uncertain. In addition, the United States has recently enacted and is currently implementing wide-ranging patent reform legislation. Recent United States Supreme Court rulings have narrowed the scope of patent protection available in certain circumstances and weakened the rights of patent owners in certain situations. In addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of events has created uncertainty with respect to the value of patents, once obtained. Depending on future actions by the United States Congress, the federal courts and the USPTO, the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain patents or to enforce patents that we might obtain in the future.

We may not be able to protect our intellectual property rights throughout the world.

Filing, prosecuting and defending patents on product candidates in all countries throughout the world would be prohibitively expensive, and our intellectual property rights in some countries outside the United States may be less extensive than those in the United States. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as federal and state laws in the United States.

Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own product candidates and may also export otherwise infringing products to territories where we have patent protection, but enforcement is not as strong as that in the United States. These products may compete with our product candidates. Future patents or other intellectual property rights may not be effective or sufficient to prevent them from competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents, trade secrets and other intellectual property protection, particularly those relating to biotechnology products or methods of treatment,

which could make it difficult for us to stop the marketing of competing products in violation of our proprietary rights generally. Proceedings to enforce our patent rights in foreign jurisdictions, whether or not successful, could result in substantial costs and divert our efforts and attention from other aspects of our business, could put our future patents at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop or license.

Our business and operations have been and are likely to continue to be adversely affected by the evolving and ongoing COVID-19 global pandemic.

Our business and operations have been and are likely to continue to be adversely affected by the effects of the recent and evolving COVID-19 virus, which was declared by the World Health Organization as a global pandemic. The COVID-19 pandemic has resulted in travel and other restrictions in order to reduce the spread of the disease, including public health directives and orders in Israel, the United States and the European Union that, among other things and for various periods of time, directed individuals to shelter at their places of residence, directed businesses and governmental agencies to cease non-essential operations at physical locations, prohibited certain non-essential gatherings and events and ordered cessation of non-essential travel. Although our employees are no longer working remotely after the expiration of such orders in Israel, future remote work policies and similar government orders or other restrictions on the conduct of business operations related to the COVID-19 pandemic may negatively impact productivity and may disrupt our ongoing research and development activities and our clinical programs and timelines, the magnitude of which will depend, in part, on the length and severity of the restrictions and other limitations on our ability to conduct our business in the ordinary course. Further, such orders also may impact the availability or cost of materials, which would disrupt our supply chain and manufacturing efforts and could affect our ability to conduct ongoing and planned clinical trials and preparatory activities.

We have paused enrollment of our Phase 3 trial of D-PLEX₁₀₀ for the prevention of sternal SSIs due to the COVID-19 pandemic, but we have informed investigators that they should continue monitoring current patients per the trial protocol. Future patient enrollment, when we deem it appropriate, and clinical site initiation may be further delayed due to prioritization of hospital resources toward the COVID-19 pandemic. Some patients may not be able to comply with clinical trial protocols if quarantines impede patient movement or interrupt healthcare services. Similarly, we may be unable to recruit and retain patients and principal investigators and site staff who, as healthcare providers, may have heightened exposure to COVID-19, which would adversely impact clinical trial operations.

The spread of COVID-19, which has caused a broad impact globally, may materially affect us economically. While the potential economic impact brought by, and the duration of, COVID-19 may be difficult to assess or predict, a widespread pandemic could result in significant disruption of global financial markets, reducing our ability to access capital, which could in the future negatively affect our liquidity. In addition, a recession or market correction resulting from the spread of COVID-19 could materially affect our business and the value of our common stock.

The global COVID-19 pandemic continues to rapidly evolve. The extent to which the COVID-19 pandemic impacts our business and operations, including our clinical development and regulatory efforts, will depend on future developments that are highly uncertain and cannot be predicted with confidence at the time of this prospectus, such as the ultimate geographic spread of the disease, the

duration of the outbreak, the duration and effect of business disruptions and the short-term effects and ultimate effectiveness of the travel restrictions, quarantines, social distancing requirements and business closures in the United States and other countries to contain and treat the disease. Accordingly, we do not yet know the full extent of potential delays or impacts on our business, our clinical and regulatory activities, healthcare systems or the global economy as a whole. However, these impacts could adversely affect our business, financial condition, results of operations and growth prospects.

In addition, to the extent the ongoing COVID-19 pandemic adversely affects our business and results of operations, it may also have the effect of heightening many of the other risks and uncertainties described in this "Risk Factors" section.

Our future success depends in part on our ability to retain our senior management team and to attract, retain and motivate other qualified personnel.

We are highly dependent on the members of our senior management team. The loss of their services without a proper replacement may adversely impact the achievement of our objectives. Our employees may leave our employment at any time. Recruiting and retaining other qualified employees, consultants and advisors for our business, including scientific and technical personnel, will also be critical to our success. There is currently a shortage of skilled personnel in our industry, which is likely to continue for the foreseeable future. As a result, competition for skilled personnel is intense, and the turnover rate can be high. We may not be able to attract and retain personnel on acceptable terms given the competition among numerous pharmaceutical companies for individuals with similar skill sets. In addition, failure to succeed in preclinical studies or clinical trials may make it more challenging to recruit and retain qualified personnel. The inability to recruit and retain qualified personnel, or the loss of the services of any members of our senior management team without proper replacement, may impede the progress of our research, development and commercialization objectives.

We will need to expand our organization, and we may experience difficulties in managing this growth, which could disrupt our operations.

Our future financial performance and our ability to commercialize product candidates and compete effectively will depend, in part, on our ability to effectively manage any future growth. As our development and commercialization plans and strategies develop, we expect to need additional managerial, operational, sales, marketing, financial and legal personnel. Our management may need to divert a disproportionate amount of its attention away from our day-to-day activities and devote a substantial amount of time to managing these growth activities. We may not be able to effectively manage the expansion of our operations, which may result in weaknesses in our infrastructure, operational mistakes, loss of business opportunities, loss of employees and reduced productivity among remaining employees. Our expected growth could require significant capital expenditures and may divert financial resources from other projects, such as the development of additional product candidates. If our management is unable to effectively manage our growth, our expenses may increase more than expected, our ability to generate and/or grow revenue could be reduced, and we may not be able to implement our business strategy.

Due to our limited resources and access to capital, we must, and have in the past decided to, prioritize development of certain product candidates over other potential candidates. These decisions may prove to have been wrong and may adversely affect our revenues.

Because we have limited resources and access to capital to fund our operations, we must decide which product candidates to pursue and the amount of resources to allocate to each. Our decisions concerning the allocation of research, collaboration, management and financial resources toward particular product candidates may not lead to the development of viable commercial products and may divert resources away from better opportunities. Similarly, our decisions to delay, terminate or

collaborate with third parties in respect of certain product development programs may also prove not to be optimal and could cause us to miss valuable opportunities. If we make incorrect determinations regarding the market potential of our product candidates or misread trends in the pharmaceutical industry, in particular for our lead product candidate, our business, financial condition and results of operations could be materially adversely affected.

We may not be successful in our efforts to identify, discover or license additional product candidates.

Although a substantial amount of our effort will focus on the continued clinical testing, potential approval and commercialization of D-PLEX₁₀₀, the success of our business also depends upon our ability to identify, discover or license additional product candidates. Our research programs or licensing efforts may fail to yield additional product candidates for clinical development for a number of reasons, including: lack of financial or personnel resources to acquire or discover additional product candidates; new product candidates may not succeed in preclinical or clinical testing, or may be shown to have harmful side effects or may have other characteristics that may make them unmarketable or unlikely to receive marketing approval; our competitors may develop alternatives that render our product candidates obsolete or less attractive; the market for a product candidate may change during our development program so that such product may become unprofitable to continue to develop; new product candidates may not be capable of being produced in commercial quantities at an acceptable cost, or at all; and new product candidates may not be accepted as safe and effective by patients, the medical community, or third-party payors.

We may be forced to abandon our development efforts for a program or programs that are unsuccessful, or we may not be able to identify, license, or discover additional product candidates, which would have a material adverse effect on our business and could potentially cause us to cease operations. Further, research programs to identify new product candidates require substantial technical, financial and human resources. We may focus our efforts and resources on potential programs or product candidates that ultimately prove to be unsuccessful.

European data collection is governed by restrictive regulations governing the collection, use, processing and cross-border transfer of personal information.

We may collect, process, use or transfer personal information from individuals located in the European Union in connection with our business, including in connection with conducting clinical trials in the European Union. Additionally, we intend to commercialize D-PLEX₁₀₀, and any of our product candidates that receive marketing approval, in the European Union. The collection and use of personal health data in the European Union is governed by the provisions of the General Data Protection Regulation ((EU) 2016/679), or the GDPR, along with other European Union and country-specific laws and regulations. The United Kingdom and Switzerland have also adopted data protection laws and regulations. These legislative acts (together with regulations and guidelines) impose requirements relating to having legal bases for processing personal information relating to identifiable individuals and transferring such information outside of the EEA, including to the United States, providing details to those individuals regarding the processing of their personal information, keeping personal information secure, having data processing agreements with third parties who process personal information, responding to individuals' requests to exercise their rights in respect of their personal information, reporting security breaches involving personal data to the competent national data protection authority and affected individuals, appointing data protection officers, conducting data protection impact assessments and record-keeping. The GDPR imposes additional responsibilities and liabilities in relation to personal data that we process and we may be required to put in place additional mechanisms ensuring compliance with the new data protection rules. Failure to comply with the requirements of the GDPR and related national data protection laws of the member states of the European Union may result in substantial fines, other administrative penalties and civil claims being

brought against us, which could have a material adverse effect on our business, prospects, financial condition and results of operations.

Our business and operations would suffer in the event of computer system failures, cyber attacks or a deficiency in our cybersecurity.

Despite the implementation of security measures intended to secure our data against impermissible access and to preserve the integrity and confidentiality of our data, our internal computer systems, and those of third parties on which we rely, are vulnerable to damage from computer viruses, malware, natural disasters, terrorism, war, telecommunication and electrical failures, cyber-attacks or cyber-intrusions over the Internet, attachments to emails, persons inside our organization, or persons with access to systems inside our organization. The risk of a security breach or disruption, particularly through cyber attacks or cyber intrusion, including by computer hackers, foreign governments, and cyber terrorists, has generally increased as the number, intensity and sophistication of attempted attacks and intrusions from around the world have increased. If such an event were to occur and cause interruptions in our operations, it could result in a material disruption of our drug development programs. For example, the loss of clinical trial data from completed or ongoing or planned clinical trials could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. To the extent that any disruption or security breach was to result in a loss of or damage to our data or applications, or inappropriate disclosure of confidential or proprietary information, we could incur material legal claims and liability, including under data privacy laws such as the GDPR, damage to our reputation, and the further development of our drug candidates could be delayed.

We will incur significant increased costs as a result of operating as a public company in the United States, and our management will be required to devote substantial time to new compliance initiatives.

As a public company whose ordinary shares are listed in the United States, we will be subject to an extensive regulatory regime, requiring us, among other things, to maintain various internal controls and facilities and to prepare and file periodic and current reports and statements, including reports on the effectiveness of our internal control over financial reporting pursuant to Section 404 of the Sarbanes-Oxley Act of 2002. Complying with these requirements will be costly and time consuming. We will need to retain additional employees to supplement our current finance staff, and we may not be able to do so in a timely manner, or at all. In the event that we are unable to demonstrate compliance with our obligations as a public company in a timely manner, or are unable to produce timely or accurate financial statements, we may be subject to sanctions or investigations by regulatory authorities, such as the SEC or The Nasdaq Global Market, and investors may lose confidence in our operating results and the price of our ordinary shares could decline.

Our independent registered public accounting firm was not engaged to perform an audit of our internal control over financial reporting, and as long as we remain an emerging growth company, as such term is defined in the Jumpstart Our Business Startups Act of 2012, or the JOBS Act, we will be exempt from the requirement to have an independent registered public accounting firm perform such audit. Accordingly, no such opinion was expressed or will be expressed any during any such period. Once we cease to qualify as an emerging growth company our independent registered public accounting firm will be required to attest to our management's annual assessment of the effectiveness of our internal controls over financial reporting, which will entail additional costs and expenses.

Furthermore, we are only in the early stages of determining formally whether our existing internal controls over financial reporting systems are compliant with Section 404 and whether there are any material weaknesses or significant deficiencies in our existing internal controls. These controls and other procedures are designed to ensure that information required to be disclosed by us in the reports

that we file with the SEC is disclosed accurately and is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms.

International expansion of our business exposes us to business, regulatory, political, operational, financial and economic risks associated with doing business outside of the United States or Israel.

Other than our headquarters and other operations which are located in Israel (as further described below), we currently have limited international operations, but our business strategy incorporates potentially significant international expansion, particularly in anticipation of approval of our product candidates. We plan to retain sales representatives and third party distributors and conduct physician, infectious disease specialist, hospital pharmacist and patient association outreach activities, as well as clinical trials, outside of the United States, European Union and Israel. Doing business internationally involves a number of risks, including but not limited to:

Any of these factors could significantly harm our future international expansion and operations and, consequently, our results of operations.

The United Kingdom's withdrawal from the European Union may have a negative effect on global economic conditions, financial markets and our business, which could reduce the price of our ordinary shares.

Following the result of a referendum in 2016, the United Kingdom left the European Union on January 31, 2020, commonly referred to as Brexit. Pursuant to the formal withdrawal arrangements

agreed between the United Kingdom and the European Union, the United Kingdom will be subject to a transition period until December 31, 2020, or the Transition Period, during which European Union rules will continue to apply. Negotiations between the United Kingdom and the European Union are expected to continue in relation to the customs and trading relationship between the United Kingdom and the European Union following the expiry of the Transition Period.

Since a significant proportion of the regulatory framework in the United Kingdom applicable to our business and our product candidates is derived from European Union directives and regulations, Brexit, following the Transition Period, could materially impact the regulatory regime with respect to the development, manufacture, importation, approval and commercialization of our product candidates in the United Kingdom or the European Union. For example, as a result of the uncertainty surrounding Brexit, the EMA relocated to Amsterdam from London. Following the Transition Period, the United Kingdom will no longer be covered by the centralized procedures for obtaining European Union-wide marketing and manufacturing authorizations from the EMA and, unless a specific agreement is entered into, a separate process for authorization of drug products, including D-PLEX₁₀₀ and any future product candidates, will be required in the United Kingdom, the potential process for which is currently unclear. Any delay in obtaining, or an inability to obtain, any marketing approvals, as a result of Brexit or otherwise, would prevent us from commercializing our product candidates in the United Kingdom or the European Union and restrict our ability to generate revenue and achieve and sustain profitability. In addition, we may be required to pay taxes or duties or be subjected to other hurdles in connection with the importation of our product candidates into the European Union, or we may incur expenses in establishing a manufacturing facility in the European Union in order to circumvent such hurdles. If any of these outcomes occur, we may be forced to restrict or delay efforts to seek regulatory approval in the United Kingdom or the European Union for our product candidates, or incur significant additional expenses to operate our business, which could significantly and materially harm or delay our ability to generate revenues or achieve profitability of our business. Any further changes in international trade, tariff and import/export regulations as a result of Brexit or otherwise may impose unexpected duty costs or other non-tariff barriers on us. These developments, or the perception that any of them could occur, may significantly reduce global trade and, in particular, trade between the impacted nations and the United Kingdom. It is also possible that Brexit may negatively affect our ability to attract and retain employees, particularly those from the European Union.

If we fail to comply with environmental, health and safety laws and regulations, we could become subject to fines or penalties or incur costs that could have a material adverse effect on the success of our business.

Our research, development and manufacturing activities and our third party manufacturers' and suppliers' activities involve the controlled storage, use and disposal of hazardous materials, including the components of our product candidates and other hazardous compounds. We and our manufacturers and suppliers are subject to laws and regulations governing the use, manufacture, storage, handling and disposal of these hazardous materials. In some cases, these hazardous materials and various wastes resulting from their use are stored at our and our manufacturers' facilities pending their use and disposal. We cannot eliminate the risk of contamination, which could cause an interruption of our commercialization efforts, research and development efforts and business operations, environmental damage resulting in costly clean-up and liabilities under applicable laws and regulations governing the use, storage, handling and disposal of these materials and specified waste products. Although we believe that the safety procedures utilized by our third-party manufacturers for handling and disposing of these materials generally comply with the standards prescribed by these laws and regulations, we cannot guarantee that this is the case or eliminate the risk of accidental contamination or injury from these materials. In such an event, we may be held liable for any resulting damages, such liability could exceed our resources, and state or federal or other applicable authorities may curtail our use of certain materials and/or interrupt our business operations. Furthermore, environmental laws and regulations

are complex, change frequently and have tended to become more stringent. We cannot predict the impact of such changes and cannot be certain of our future compliance. We do not currently carry biological or hazardous waste insurance coverage.

Our employees and independent contractors may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements.

We are exposed to the risk of fraud or other misconduct by our employees and independent contractors. Misconduct by these parties could include intentional failures to comply with FDA regulations, provide accurate information to the FDA, comply with manufacturing standards we may establish, comply with federal and state healthcare fraud and abuse laws and regulations, report financial information or data accurately or disclose unauthorized activities to us. In particular, sales, marketing and business arrangements in the healthcare industry are subject to extensive laws and regulations intended to prevent fraud, misconduct, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales commission, customer incentive programs and other business arrangements. Employee and independent contractor misconduct could also involve the improper use of information obtained in the course of clinical trials, including individually identifiable information, creating fraudulent data in our preclinical studies or clinical trials or illegal misappropriation of product candidates, which could result in regulatory sanctions and serious harm to our reputation. It is not always possible to identify and deter misconduct by employees and other third parties, and the precautions we take to detect and prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to be in compliance with such laws or regulations. Additionally, we are subject to the risk that a person or government could allege such fraud or other misconduct, even if none occurred. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions could have a significant impact on our business, including the imposition of significant fines or other sanctions.

Under applicable employment laws, we may not be able to enforce covenants not to compete and therefore may be unable to prevent our competitors from benefiting from the expertise of some of our former employees.

We generally enter into non-competition agreements with our employees and certain key consultants. These agreements prohibit our employees and certain key consultants, if they cease working for us, from competing directly with us or working for our competitors or clients for a limited period of time. We may be unable to enforce these agreements under the laws of the jurisdictions in which our employees work and it may be difficult for us to restrict our competitors from benefitting from the expertise our former employees or consultants developed while working for us.

For example, Israeli courts have required employers seeking to enforce non-compete undertakings of a former employee to demonstrate that the competitive activities of the former employee will harm one of a limited number of material interests of the employer which have been recognized by the courts, such as the secrecy of a company's confidential commercial information or the protection of its intellectual property. If we cannot demonstrate that such interests will be harmed, we may be unable to prevent our competitors from benefiting from the expertise of our former employees or consultants and our ability to remain competitive may be diminished.

We have limited manufacturing experience and could experience production problems that result in delays in our development or commercialization programs or otherwise adversely affect our business.

We have limited experience manufacturing D-PLEX₁₀₀. Although we have established our own manufacturing facility to support current and future clinical trials, and have received regulatory approvals for clinical manufacturing, and an initial commercial launch, we may be unable to produce commercial materials or meet demand for D-PLEX₁₀₀ if we are unable to receive or maintain commercial regulatory approvals for our facility. Any such failure could delay or prevent our development of D-PLEX₁₀₀ and would have a material adverse effect on our business, financial condition and results of operations.

The manufacturing process we use to produce D-PLEX₁₀₀ has not been validated for commercial use. Although we have increased the scale of our manufacturing process in order to produce sufficient quantities of D-PLEX₁₀₀ for our ongoing and planned clinical trials and at least the first 30 months following a commercial launch, if D-PLEX₁₀₀ is approved, in the future we will need to increase the scale of our manufacturing process either at our facility or at third-party manufacturers, or both. We may not be successful in producing sufficient quantities of D-PLEX₁₀₀, due to several factors, including equipment malfunctions, facility contamination, technical process challenges, raw material shortages or contamination, natural disasters, disruption in utility services, human error or disruptions in the operations of our suppliers. Problems with the manufacturing process, even minor deviations from the normal process, could result in product defects or manufacturing failures that result in lot failures, product recalls, product liability claims or insufficient inventory. We may encounter problems achieving adequate quantities and quality of clinical- and commercial-grade materials that meet FDA, EMA or other applicable standards or specifications with consistent and acceptable production yields and costs.

Slight deviations in the manufacturing process, including those affecting quality attributes and stability, may result in unacceptable changes in the product that could result in lot failures or product recalls. There is no assurance we will not experience such failures at our own manufacturing facility or that of a third party in the future. Lot failures or product recalls could cause us to delay product launches or clinical trials, which could be costly to us and otherwise harm our business, financial condition, results of operations and prospects.

We also may encounter problems hiring and retaining the experienced specialist scientific, quality control and manufacturing personnel needed to operate our manufacturing process, which could result in delays in our production or difficulties in maintaining compliance with applicable regulatory requirements.

Any problems in our manufacturing process or facilities could make us a less attractive collaborator for potential partners, including biopharmaceutical companies, which could limit our access to additional attractive development programs. Problems in our manufacturing process or facilities also could restrict our ability to meet market demand for D-PLEX₁₀₀ or future product candidates.

If the market opportunities for our product candidates are smaller than we believe they are, our revenue may be adversely affected, and our business may suffer.

Our projections of the number of people who have the potential to benefit from treatment with our product candidates are based on our beliefs and estimates. These estimates have been derived from a variety of sources, including the scientific literature, surveys of clinics or market research, and may prove to be incorrect. Our target patient population may be lower than expected, may not be otherwise amenable to treatment with our product candidate or patients may become increasingly difficult to identify and access, all of which would adversely affect our business, financial condition, results of operations and prospects. In addition, medical advances may reduce our target markets. For example, new processes and advances in oral antibiotic medications or new operative procedures may limit the

need for localized delivery systems like our product candidates. Further, advances in treatments in the fields in which we are conducting research programs that reduce side effects and have better deliverability to target organs may limit the market for our future product candidates. If the market opportunities for our product candidates are smaller than we believe they are, our revenue may be adversely affected, and our business may suffer.

We currently have no marketing and sales organization. If we are unable to establish sales and marketing capabilities, or enter into agreements with third parties to market and sell our product candidates, we may be unable to generate any product revenue.

We have no experience selling and marketing our product candidates, and we currently have no marketing or sales organization. To successfully commercialize any product candidates that may result from our development programs, we will need to develop these capabilities, either on our own or with others. If our product candidates receive regulatory approval, we intend to establish a sales and marketing organization independently or by utilizing experienced third parties with technical expertise and supporting distribution capabilities to commercialize our product candidates in major markets, all of which will be expensive, difficult and time consuming. Any failure or delay in the development of our internal sales, marketing and distribution capabilities would adversely impact our ability to commercialize our product candidates.

Further, given our lack of prior experience in marketing and selling pharmaceutical products, our initial estimate of the size of the required sales force may be materially more or less than the size of the sales force actually required to effectively commercialize our product candidates. As such, we may be required to hire sales representatives and third party distributors to adequately support the commercialization of our product candidates, or we may incur excess costs if we hire more sales representatives than necessary. With respect to certain geographical markets, we may enter into collaborations with other entities to utilize their local marketing and distribution capabilities, but we may be unable to enter into such agreements on favorable terms, if at all. We also may enter into collaborations with large pharmaceutical companies to develop and commercialize product candidates. If our future collaborators do not commit sufficient resources to develop and commercialize our future products, if any, and we are unable to develop the necessary marketing capabilities on our own, we will be unable to generate sufficient product revenue to sustain our business. We may compete with companies that currently have extensive and well-funded marketing and sales operations. Without an internal team or the support of a third party to perform marketing and sales functions, we may be unable to compete successfully against these more established companies.

Our efforts to educate the medical community, including physicians, hospital pharmacists and third-party payors on the benefits of our product candidates may require significant resources and may never be successful. If any of our product candidates are approved but fail to achieve market acceptance among physicians, patients or third-party payors, we will not be able to generate significant revenues from such product, which could have a material adverse effect on our business, financial condition, results of operations and prospects.

We are subject to significant regulatory oversight with respect to manufacturing our product candidates. Delays in establishing and obtaining regulatory approval of our manufacturing process and facility or disruptions in our manufacturing process may delay or disrupt our product development and commercialization efforts.

The preparation of drug products for clinical trials or commercial sale is subject to extensive regulation. Before we can begin to commercially manufacture D-PLEX₁₀₀ or any product candidate, whether in a third-party facility or in our own facility, we must obtain regulatory approvals from the Israeli Ministry of Health, or MOH, the FDA and similar regulatory agencies, as applicable for our manufacturing process and facility. A manufacturing authorization must also be obtained from the

appropriate regulatory authorities in the European Union and worldwide. In addition, we must pass a pre-approval inspection of our manufacturing facility by the FDA before D-PLEX₁₀₀ or any product candidate can obtain marketing approval. In order to obtain approval, we will need to ensure that all of our processes, methods and equipment are compliant with cGMP, and perform extensive audits of vendors, contract laboratories and suppliers. If any of our vendors, contract laboratories or suppliers is found to be out of compliance with cGMP, we may experience delays or disruptions in manufacturing while we work with these third parties to remedy the violation or while we work to identify suitable replacement vendors. For example, in the past, a cGMP audit by the MOH of the manufacturing process in the facility of our contract manufacturer for D-PLEX₁₀₀ resulted in certain critical observations, which have since been resolved. There can be no guarantee, however, that future inspections by regulatory authorities of our manufacturing facilities or those of our contract manufacturers will result in MOH's agreement that these critical observations have been resolved or that similar inspectional observations will not be identified. If we do not demonstrate to the satisfaction of the applicable regulator that our manufacturing facilities, or those of our contract manufacturers, are in compliance with applicable requirements, we may be materially delayed in the development of our product candidates, which would materially harm our business. The cGMP requirements govern quality control of the manufacturing process and documentation policies and procedures. In complying with cGMP, we will be obligated to expend time, money and effort in production, record keeping and quality control to assure that the product meets applicable specifications and other requirements. If we fail to comply with these requirements, we would be subject to possible regulatory action and may not be permitted to sell any product candidate that we may develop.

Our failure to comply with applicable regulations could result in sanctions being imposed on us, including clinical holds, fines, injunctions, civil penalties, delays, suspension or withdrawal of approvals, license revocation, seizures or recalls of product candidates or products, operating restrictions and criminal prosecutions, any of which could significantly and adversely affect supplies of any approved products and our product candidates.

Operating our own manufacturing facility will require additional investment, will be time-consuming and may be subject to delays, including because of shortage of labor or compliance with regulatory requirements. In addition, operating a manufacturing facility may cost more than we currently anticipate. Delays or problems in the build out of our manufacturing facility may adversely impact our ability to provide supply for the development and commercialization of D-PLEX₁₀₀ as well as our financial condition.

If we receive marketing approval for our product candidates, sales will be limited unless the product achieves broad market acceptance by physicians, patients, third-party payors, hospital pharmacists, infectious disease specialists and others in the medical community.

The commercial success of our product candidates will depend upon the acceptance of the product by the medical community, including physicians, patients, healthcare payors, hospital pharmacists and infectious disease specialists. The degree of market acceptance of any approved product will depend on a number of factors, including:

If our product candidates are approved but do not achieve an adequate level of acceptance by physicians, patients, healthcare payors, hospital pharmacists and infectious disease specialists, we may not generate sufficient revenue from the product, and we may not become or remain profitable. In addition, our efforts to educate the medical community and third-party payors on the benefits of our product candidates may require significant resources and may never be successful.

It may be difficult for us to profitably sell our product candidates if coverage and reimbursement for these products is limited by government authorities and/or third-party payor policies.

In addition to any healthcare reform measures which may affect reimbursement, market acceptance and sales of our product candidates, if approved, will depend on, in part, the extent to which the procedures utilizing our product candidates, performed by health care providers, will be covered by third party payors, such as government health care programs, commercial insurance and managed care organizations. Our product candidates will be purchased or provided by health care providers for utilization in certain surgical procedures. In the event health care providers and patients accept our product candidates as medically useful, cost effective and safe, there is uncertainty regarding whether our product candidates will be directly reimbursed, reimbursed through a bundled payment or if the product candidates will be included in another type of value-based reimbursement program. Third party payors determine the extent to which new products will be covered as a benefit under their plans and the level of reimbursement for any covered product or procedure which may utilize a covered product. It is difficult to predict at this time what third party payors will decide with respect to the coverage and reimbursement for our product candidates.

A primary trend in the U.S. healthcare industry and elsewhere has been cost containment, including price controls, restrictions on coverage and reimbursement and requirements for substitution of less expensive products and procedures. Third party payors decide which products and procedures they will pay for and establish reimbursement and co-payment levels. Government and other third-party payors are increasingly challenging the prices charged for health care products and procedures, examining the cost effectiveness of procedures, and the products used in such procedures, in addition to their safety and efficacy, and limiting or attempting to limit both coverage and the level of reimbursement. We cannot be sure that coverage will be available for our product candidates, if approved, or, if coverage is available, the level of direct or indirect reimbursement.

We expect to experience pricing pressures in connection with the sale of any of our product candidates due to the trend toward managed healthcare, the increasing influence of health maintenance organizations, and additional legislative changes. The downward pressure on healthcare costs in general, particularly prescription drugs and surgical procedures and other treatments, has become very intense. As a result, increasingly high barriers are being erected to the successful commercialization of new products. Further, the adoption and implementation of any future governmental cost containment or

other health reform initiative may result in additional downward pressure on the price that we may receive for any approved product.

Reimbursement by a third-party payor may depend upon a number of factors including the third-party payor's determination that use of a product is:

There is significant uncertainty related to the insurance coverage and reimbursement of newly approved products. In the United States, third-party payors, including private and governmental payors such as the Medicare and Medicaid programs, play an important role in determining the extent to which procedures using new products will be covered and reimbursed. The Medicare and Medicaid programs are increasingly used as models for how private payors and other governmental payors develop their coverage and reimbursement policies. It is difficult to predict at this time what third-party payors will decide with respect to reimbursement for fundamentally novel products such as ours, as there is no body of established practices and precedents for these new products.

Obtaining coverage and reimbursement approval for a product from a government or other third-party payor is a time-consuming and costly process that could require us to provide supporting scientific, clinical and cost effectiveness data for the use of our products to the payor. Additionally, we may not be able to provide data sufficient to gain acceptance with respect to coverage and reimbursement. We cannot be sure that coverage or adequate reimbursement will be available for our product candidates, if approved. Also, we cannot be sure that reimbursement amounts will not reduce the demand for, or the price of, our future products. If reimbursement is not available, or is available only to limited levels, we may not be able to commercialize our product candidates, or achieve profitably at all, even if approved.

Our business entails a significant risk of clinical trial and/or product liability and our ability to obtain sufficient insurance coverage could have a material effect on our business, financial condition, results of operations or prospects.

Our business exposes us to significant clinical trial and/or product liability risks inherent in the development, testing, manufacturing and marketing of therapeutic treatments. Clinical trial and/or product liability claims could delay or prevent completion of our development programs. If we succeed in marketing products, product liability claims could result in an FDA investigation of the safety and effectiveness of our products, our manufacturing processes and facilities or our marketing programs and potentially a recall of our products or more serious enforcement action, limitations on the approved indications for which they may be used or suspension or withdrawal of approvals. Regardless of the merits or eventual outcome, liability claims may also result in decreased demand for our products, injury to our reputation, costs to defend the related litigation, a diversion of management's time and our resources, substantial monetary awards to trial participants or patients and a decline in our company valuation. While we currently have clinical trial liability insurance, we do not have product liability insurance and do not anticipate obtaining product liability insurance until such time as we have received FDA or other comparable foreign authority approval for a product and there is a product that is being provided to patients outside of clinical trials. Any insurance we have or may obtain may not provide sufficient coverage against potential liabilities. Furthermore, clinical trial and product liability insurance are becoming increasingly expensive. As a result, we may be unable to obtain sufficient

insurance at a reasonable cost to protect us against losses caused by clinical trial and product liability claims that could have a material adverse effect on our business.

Prior to this offering, there has been no public market for our ordinary shares. The initial public offering price for our ordinary shares will be determined through negotiations with the underwriters. Although we have applied to have our ordinary shares listed on The Nasdaq Global Market, an active trading market for our shares may never develop or be sustained following this offering. If an active market for our ordinary shares does not develop, it may be difficult for you to sell shares you purchase in this offering without depressing the market price for the shares, or at all.

The market price of our ordinary shares may be highly volatile, which could result in substantial losses for purchasers of our ordinary shares in this offering.

The trading price of our ordinary shares is likely to be volatile. The stock market in general, and the market for pharmaceutical companies in particular, has experienced extreme volatility that has often been unrelated to the operating performance of particular companies, including very recently in connection with the ongoing COVID-19 pandemic, which has resulted in decreased stock prices for many companies notwithstanding the lack of a fundamental change in their underlying business models or prospects. Broad market and industry factors, including potentially worsening economic conditions and other adverse effects or developments relating to the ongoing COVID-19 pandemic, may negatively affect the market price of our common stock, regardless of our actual operating performance. As a result of this volatility, you may not be able to sell your ordinary shares at or above the initial public offering price. The following factors, in addition to other risk factors described in this section, may have a significant impact on the market price of our ordinary shares:

If our quarterly operating results fall below the expectations of investors or securities analysts, the price of our ordinary shares could decline substantially. Furthermore, any quarterly fluctuations in our operating results may, in turn, cause the price of our stock to fluctuate substantially. We believe that quarterly comparisons of our financial results are not necessarily meaningful and should not be relied upon as an indication of our future performance.

In the past, following periods of volatility in the market price of a company's securities, securities class-action litigation often has been instituted against that company. Such litigation, if instituted against us, could cause us to incur substantial costs to defend such claims and divert management's attention and resources, which could seriously harm our business, financial condition, results of operations and prospects.

If you purchase our ordinary shares in this offering, you will incur immediate and substantial dilution in the book value of your shares.

The initial public offering price of our ordinary shares will be substantially higher than the net tangible book value per share of our ordinary shares. Therefore, if you purchase ordinary shares in this offering, you will pay a price per share that substantially exceeds our net tangible book value per share after this offering. To the extent outstanding options and warrants are exercised, you will incur further dilution. Based on an assumed initial public offering price of $ per share, which is the midpoint of the price range set forth on the cover page of this prospectus, you will experience immediate dilution of $ per share, representing the difference between our pro forma net tangible book value per share after giving effect to this offering at the assumed initial public offering price. In addition, purchasers of ordinary shares in this offering will have contributed approximately % of the aggregate price paid by all purchasers of our ordinary shares but will own only approximately % of our ordinary shares outstanding after this offering. See "Dilution."

Sales of a substantial number of shares of our ordinary shares in the public market by our existing shareholders could cause our share price to fall.

Sales of a substantial number of our ordinary shares in the public market, or the perception that these sales might occur, could depress the market price of our ordinary shares and could impair our ability to raise capital through the sale of additional equity securities. We are unable to predict the effect that sales may have on the prevailing market price of our ordinary shares. Substantially all of the shares owned by our existing shareholders and option and warrant holders are subject to lock-up agreements with the underwriters of this offering that restrict the shareholders' ability to transfer our ordinary shares for at least six months from the date of this prospectus. Substantially all of our outstanding shares will become eligible for unrestricted sale upon expiration of the lockup period, as described in the sections of this prospectus entitled "Shares Eligible for Future Sale" and "Underwriting." In addition, shares issued or issuable upon exercise of options and warrants vested as of the expiration of the lock-up period will be eligible for sale at that time. Sales of shares by these shareholders could have a material adverse effect on the trading price of our ordinary shares. Moreover, after this offering, holders of an aggregate of approximately 16,834,161 ordinary shares will have rights, subject to some conditions, to require us to file registration statements covering their shares or to include their shares in registration statements that we may file for ourselves or other shareholders. We intend to register all ordinary shares that we may issue under our equity compensation plans. Once we register these shares, they can be freely sold in the public market upon issuance, subject to volume limitations applicable to affiliates and the lock-up agreements described in the "Underwriting" section of this prospectus.

Our management will have broad discretion in the use of the net proceeds from this offering and may allocate the net proceeds from this offering in ways that you and other shareholders may not approve.

Our management will have broad discretion in the use of the net proceeds from this offering, including for any of the purposes described in the section entitled "Use of Proceeds," and you will not have the opportunity as part of your investment decision to assess whether the net proceeds are being used appropriately. Because of the number and variability of factors that will determine our use of the net proceeds from this offering, their ultimate use may vary substantially from their currently intended use. The failure of our management to use these funds effectively could harm our business. Pending their use, we may invest the net proceeds from this offering in short-term, investment-grade, interest-bearing securities and depositary institutions. These investments may not yield a favorable return to our shareholders.

Our executive officers, directors and principal shareholders will maintain the ability to exert significant control over matters submitted to our shareholders for approval.

Assuming the sale by us of ordinary shares in this offering, our executive officers, directors and principal shareholders who owned more than 5% of our outstanding ordinary shares before this offering will, in the aggregate, beneficially own shares representing approximately % of our share capital. As a result, if these shareholders were to act together, they would be able to control all matters submitted to our shareholders for approval, as well as our management and affairs. For example, these persons, if they act together, would control the election of directors and approval of any merger, consolidation or sale of all or substantially all of our assets. This concentration of voting power could delay or prevent an acquisition of our company on terms that other shareholders may desire or result in management of our company that our public shareholders disagree with.

There is a substantial risk that we are or will become classified as a passive foreign investment company. If we are or become classified as a passive foreign investment company, our U.S. shareholders may suffer adverse tax consequences as a result.

Generally, for any taxable year, if at least 75% of our gross income is passive income, or at least 50% of the value of our assets is attributable to assets that produce passive income or are held for the production of passive income, including cash, we would be characterized as a passive foreign investment company, or PFIC, for U.S. federal income tax purposes. For purposes of these tests, passive income includes dividends, interest gains from commodities and securities transactions, the excess of gains over losses from the disposition of assets which produce passive income (including amounts derived by reason of the temporary investment of funds raised in offerings of our shares) and rents and royalties other than rents and royalties which are received from unrelated parties in connection with the active conduct of a trade or business. If we are characterized as a PFIC, our U.S. shareholders may suffer adverse tax consequences, including having gains realized on the sale of our ordinary shares treated as ordinary income, rather than capital gain, the loss of the preferential rate applicable to dividends received on our ordinary shares by individuals who are U.S. holders, and having interest charges apply to distributions by us and gains from the sales of our shares.

Our status as a PFIC will depend on the nature and composition of our income and the nature, composition and value of our assets (which, assuming we are not a "controlled foreign corporation," or a CFC, under Section 957(a) of the Internal Revenue Code of 1986, as amended, or the Code, for the year being tested, may be determined based on the fair market value of each asset, with the value of goodwill and going concern value determined in large part by reference to the market value of our common shares, which may be volatile). Our status may also depend, in part, on how quickly we utilize the cash proceeds from this offering in our business. Based upon the expected value of our assets, including any goodwill, and the expected nature and composition of our income and assets, we may be classified as a PFIC for the taxable year ending December 31, 2019 and in future taxable years. In

particular, so long as we do not generate revenue from operations for any taxable year and do not receive any research and development grants, or even if we receive a research and development grant, if such grant does not constitute gross income for United States federal income tax purposes, we likely will be classified as a PFIC for such taxable year. Because the determination of whether we are a PFIC for any taxable year is a factual determination made annually after the end of each taxable year, there can be no assurance that we will not be considered a PFIC in any taxable year.

The tax consequences that would apply if we are classified as a PFIC would also be different from those described above if a U.S. shareholder were able to make a valid qualified electing fund, or QEF, election. At this time, we do not expect to provide U.S. shareholders with the information necessary for a U.S. shareholder to make a QEF election. Prospective investors should assume that a QEF election will not be available.

If a United States person is treated as owning at least 10% of our shares, such holder may be subject to adverse U.S. federal income tax consequences.

If a United States person is treated as owning (directly, indirectly or constructively) at least 10% of the value or voting power of our shares, such person may be treated as a "United States shareholder" with respect to each "controlled foreign corporation" in our group (if any). If our group includes one or more U.S. subsidiaries, certain of our non-U.S. subsidiaries could be treated as controlled foreign corporations (regardless of whether we are or are not treated as a controlled foreign corporation). A United States shareholder of a controlled foreign corporation may be required to annually report and include in its U.S. taxable income its pro rata share of "Subpart F income," "global intangible low-taxed income" and investments in U.S. property by controlled foreign corporations, whether or not we make any distributions. An individual that is a United States shareholder with respect to a controlled foreign corporation generally would not be allowed certain tax deductions or foreign tax credits that would be allowed to a United States shareholder that is a U.S. corporation. A failure to comply with these reporting obligations may subject you to significant monetary penalties and may prevent the statute of limitations with respect to your U.S. federal income tax return for the year for which reporting was due from starting. We cannot provide any assurances that we will assist investors in determining whether any of our non-U.S. subsidiaries are treated as a controlled foreign corporation or whether such investor is treated as a United States shareholder with respect to any of such controlled foreign corporations or furnish to any United States shareholders information that may be necessary to comply with the aforementioned reporting and tax paying obligations. A United States investor should consult their own advisors regarding the potential application of these rules to its investment in the shares.

We have never paid cash dividends on our share capital, and we do not anticipate paying any cash dividends in the foreseeable future.

We have never declared or paid cash dividends on our ordinary shares. We currently anticipate that we will retain future earnings for the development, operation and expansion of our business and do not anticipate declaring or paying any cash dividends in the foreseeable future. As a result, capital appreciation, if any, of our ordinary shares will be investors' sole source of gain for the foreseeable future. In addition, Israeli law limits our ability to declare and pay dividends, and may subject our dividends to Israeli withholding taxes.

If securities or industry analysts do not publish or cease publishing research or reports about us, our business or our market, or if they adversely change their recommendations or publish negative reports regarding our business or our shares, our share price and trading volume could decline.

The trading market for our ordinary shares will be influenced by the research and reports that industry or securities analysts may publish about us, our business, our market or our competitors. We do not have any control over these analysts and we cannot provide any assurance that analysts will

cover us or provide favorable coverage. If any of the analysts who may cover us adversely change their recommendation regarding our shares, or provide more favorable relative recommendations about our competitors, our share price would likely decline. If any analyst who may cover us were to cease coverage of our company or fail to regularly publish reports on us, we could lose visibility in the financial markets, which in turn could cause our share price or trading volume to decline.

As a foreign private issuer, we are permitted, and intend, to follow certain home country corporate governance practices instead of otherwise applicable Nasdaq requirements, and we will not be subject to certain U.S. securities laws including, but not limited to, U.S. proxy rules and the filing of certain Exchange Act reports.

As a foreign private issuer, we will be permitted, and intend, to follow certain home country corporate governance practices instead of those otherwise required by the Nasdaq Stock Market for domestic U.S. issuers. Following our home country governance practices as opposed to the requirements that would otherwise apply to a U.S. company listed on The Nasdaq Global Market may provide less protection to you than what is accorded to investors under the listing rules of Nasdaq applicable to domestic U.S. issuers. See the section titled "Management—Corporate Governance Practices."

As a foreign private issuer, we will be exempt from the rules and regulations under the Securities Exchange Act of 1934, or the Exchange Act, related to the furnishing and content of proxy statements, including the applicable compensation disclosure requirements. Nevertheless, pursuant to regulations promulgated under the Israeli Companies Law, 5759-1999, or the Israeli Companies Law, we are required to disclose the annual compensation of our five most highly compensated office holders on an individual basis. Such disclosure will not be as extensive as that required of a U.S. domestic issuer. Our officers, directors and principal shareholders will also be exempt from the reporting and short-swing profit recovery provisions contained in Section 16 of the Exchange Act. In addition, we will not be required under the Exchange Act to file reports and financial statements with the SEC as frequently or as promptly as U.S. domestic companies whose securities are registered under the Exchange Act and we will be exempt from filing quarterly reports with the SEC under the Exchange Act. Moreover, we will not be required to comply with Regulation FD, which restricts the selective disclosure of material information, although we intend to voluntarily adopt a corporate disclosure policy substantially similar to Regulation FD. These exemptions and leniencies will reduce the frequency and scope of information and protections to which you may otherwise have been eligible in relation to a U.S. domestic issuer.

We would lose our foreign private issuer status if a majority of our shares are owned by U.S. residents and a majority of our directors or executive officers are U.S. citizens or residents or we fail to meet additional requirements necessary to avoid loss of foreign private issuer status. The regulatory and compliance costs to us under U.S. securities laws as a U.S. domestic issuer may be significantly higher. If we are not a foreign private issuer, we will be required to file periodic reports and registration statements on U.S. domestic issuer forms with the SEC, which are more detailed and extensive than the forms available to a foreign private issuer. We may also be required to modify certain of our policies to comply with accepted governance practices associated with U.S. domestic issuers. Such conversion and modifications will involve additional costs. In addition, we would lose our ability to rely upon exemptions from certain corporate governance requirements on U.S. stock exchanges that are available to foreign private issuers.

We are an emerging growth company and the reduced disclosure requirements applicable to emerging growth companies may make our ordinary shares less attractive to investors.

We are an emerging growth company, as defined in the JOBS Act, and we may take advantage of certain exemptions from various requirements that are applicable to other public companies that are not emerging growth companies.

For as long as we remain an emerging growth company we are permitted and intend to rely on exemptions from certain disclosure requirements that are applicable to other public companies that are not "emerging growth companies." These exemptions include:

We will remain an emerging growth company until the earliest of: (i) the last day of our fiscal year during which we have total annual gross revenues of at least $1.07 billion; (ii) the last day of our fiscal year following the fifth anniversary of the closing of this offering; (iii) the date on which we have, during the previous three-year period, issued more than $1.0 billion in non-convertible debt; or (iv) the date on which we are deemed to be a "large accelerated filer" under the Exchange Act. We have opted out of the extended transition period made available to emerging growth companies to comply with newly adopted public company accounting requirements.

When we are no longer deemed to be an emerging growth company, we will not be entitled to the exemptions provided in the JOBS Act discussed above. We cannot predict if investors will find our ordinary shares less attractive as a result of our reliance on exemptions under the JOBS Act. If some investors find our ordinary shares less attractive as a result, there may be a less active trading market for our ordinary shares and our share price may be more volatile.

Our headquarters and other significant operations are located in Israel, and, therefore, our results may be adversely affected by political, economic and military instability in Israel.

Our executive offices, research and development laboratories and manufacturing facility are located in Petach Tikva, Israel. In addition, the majority of our key employees, officers and directors are residents of Israel. If these or any future facilities in Israel were to be damaged, destroyed or otherwise unable to operate, whether due to war, acts of hostility, earthquakes, fire, floods, hurricanes, storms, tornadoes, other natural disasters, employee malfeasance, terrorist acts, power outages or otherwise, or if performance of our research and development is disrupted for any other reason, such an event could delay our clinical trials or, if our product candidates are approved and we choose to manufacture all or any part of them internally, jeopardize our ability to manufacture our products as promptly as our prospective customers will likely expect, or possibly at all. If we experience delays in achieving our development objectives, or if we are unable to manufacture an approved product within a timeframe that meets our prospective customers' expectations, our business, prospects, financial results and reputation could be harmed.

Political, economic and military conditions in Israel may directly affect our business. Since the establishment of the State of Israel in 1948, a number of armed conflicts have taken place between Israel and groups in its neighboring countries, Hamas (an Islamist militia and political group that has

historically controlled the Gaza Strip) and Hezbollah (an Islamist militia and political group based in Lebanon). In addition, several countries, principally in the Middle East, restrict doing business with Israel, and additional countries may impose restrictions on doing business with Israel and Israeli companies whether as a result of hostilities in the region or otherwise. Any hostilities involving Israel, terrorist activities, political instability or violence in the region or the interruption or curtailment of trade or transport between Israel and its trading partners could adversely affect our operations and results of operations and the market price of our ordinary shares.

Our commercial insurance does not cover losses that may occur as a result of an event associated with the security situation in the Middle East. Although the Israeli government is currently committed to covering the reinstatement value of direct damages that are caused by terrorist attacks or acts of war, we cannot assure you that this government coverage will be maintained or, if maintained, will be sufficient to compensate us fully for damages incurred. Any losses or damages incurred by us could have a material adverse effect on our business, financial condition and results of operations.

Further, our operations could be disrupted by the obligations of our employees to perform military service. As of March 31, 2020, we had 57 full-time employees based in Israel. Of these employees, some may be military reservists, and may be called upon to perform military reserve duty of up to 36 days per year (and in some cases more) until they reach the age of 40 (and in some cases, up to the age of 45 or older). Additionally, they may be called to active duty at any time under emergency circumstances. In response to increased tension and hostilities in the region, there have been, at times, call-ups of military reservists, and it is possible that there will be additional call-ups in the future. Our operations could be disrupted by the absence of these employees due to military service. Such disruption could harm our business and operating results.

Although our functional currency is the U.S. dollar, and our financial records are maintained in U.S. dollars, we also incur expenses in Euros and New Israeli Shekels. In the future, we expect that a substantial portion of our revenues will be generated in U.S. dollars, Euros and other foreign currencies, although we currently incur a significant portion of our expenses in currencies other than U.S. dollars, mainly New Israeli Shekels. As a result, we are affected by foreign currency exchange fluctuations through both translation risk and transaction risk, and our financial results may be affected by fluctuations in the exchange rates of currencies in the countries in which our prospective product candidates may be sold. We currently partially hedge our foreign currency exchange rate risk to decrease the risk of financial exposure from fluctuations in the exchange rates of our principal operating currencies.

We received Israeli government grants for certain of our research and development activities, the terms of which may require us to pay royalties and to satisfy specified conditions in order to manufacture products and transfer technologies outside of Israel. If we fail to satisfy these conditions, we may be required to pay penalties and refund grants previously received.

Our research and development efforts have been financed in part through royalty-bearing and non-royalty-bearing grants in an aggregate amount of $4.9 million that we received from the IIA as of December 31, 2019. The current IIA-approved research and development grants ended on December 31, 2018. With respect to the royalty-bearing grants we are committed to pay royalties at a rate of 3.0% on sales proceeds from our products that were developed under IIA programs up to the total amount of grants received, linked to the U.S. dollar and bearing interest at an annual rate of LIBOR applicable to U.S. dollar deposits. We are further required to comply with the requirements of the Israeli Encouragement of Industrial Research, Development and Technological Innovation Law, 5744-1984, as amended, and related regulations, or the Research Law, with respect to those past grants. When a company develops know-how, technology or products using IIA grants, the terms of these

grants and the Research Law restrict the transfer or license of such know-how, and the transfer of manufacturing or manufacturing rights of such products, technologies or know-how outside of Israel, without the prior approval of the IIA. Therefore, the discretionary approval of an IIA committee would be required for any transfer or license to third parties inside or outside of Israel of know how or for the transfer outside of Israel of manufacturing or manufacturing rights related to those aspects of such technologies. We may not receive those approvals. Furthermore, the IIA may impose certain conditions on any arrangement under which it permits us to transfer technology or development.

The transfer or license of IIA-supported technology or know-how outside of Israel and the transfer of manufacturing of IIA-supported products, technology or know-how outside of Israel may involve the payment of significant amounts, depending upon the value of the transferred or licensed technology or know-how, our research and development expenses, the amount of IIA support, the time of completion of the IIA-supported research project and other factors. These restrictions and requirements for payment may impair our ability to sell, license or otherwise transfer our technology assets outside of Israel or to outsource or transfer development or manufacturing activities with respect to any product or technology outside of Israel. Furthermore, the consideration available to our shareholders in a transaction involving the transfer outside of Israel of technology or know-how developed with IIA funding (such as a merger or similar transaction) may be reduced by any amounts that we are required to pay to the IIA.

Provisions of Israeli law and our amended and restated articles of association may delay, prevent or otherwise impede a merger with, or an acquisition of, us, which could prevent a change of control, even when the terms of such a transaction are favorable to us and our shareholders.

Israeli corporate law regulates mergers, requires tender offers for acquisitions of shares above specified thresholds, requires special approvals for transactions involving directors, officers or significant shareholders and regulates other matters that may be relevant to such types of transactions. For example, a merger may not be consummated unless at least 50 days have passed from the date on which a merger proposal is filed by each merging company with the Israel Registrar of Companies and at least 30 days have passed from the date on which the shareholders of both merging companies have approved the merger. In addition, a majority of each class of securities of the target company must approve a merger. Moreover, a tender offer for all of a company's issued and outstanding shares can only be completed if the acquirer receives positive responses from the holders of at least 95% of the issued share capital. Completion of the tender offer also requires approval of a majority of the offerees that do not have a personal interest in the tender offer, unless, following consummation of the tender offer, the acquirer would hold at least 98% of the Company's outstanding shares. Furthermore, the shareholders, including those who indicated their acceptance of the tender offer, may, at any time within six months following the completion of the tender offer, claim that the consideration for the acquisition of the shares does not reflect their fair market value, and petition an Israeli court to alter the consideration for the acquisition accordingly, unless the acquirer stipulated in its tender offer that a shareholder that accepts the offer may not seek such appraisal rights, and the acquirer or the company published all required information with respect to the tender offer prior to the tender offer's response date.

Furthermore, Israeli tax considerations may make potential transactions unappealing to us or to our shareholders whose country of residence does not have a tax treaty with Israel exempting such shareholders from Israeli tax. For example, Israeli tax law does not recognize tax-free share exchanges to the same extent as U.S. tax law. With respect to mergers, Israeli tax law allows for tax deferral in certain circumstances but makes the deferral contingent on the fulfillment of a number of conditions, including, in some cases, a holding period of two years from the date of the transaction during which sales and dispositions of shares of the participating companies are subject to certain restrictions. Moreover, with respect to certain share swap transactions, the tax deferral is limited in time, and when such time expires, the tax becomes payable even if no disposition of the shares has occurred. These

provisions could delay, prevent or impede an acquisition of us or our merger with another company, even if such an acquisition or merger would be beneficial to us or to our shareholders.

It may be difficult to enforce a judgment of a U.S. court against us and our executive officers and directors and the Israeli experts named in this prospectus in Israel or the United States, to assert U.S. securities laws claims in Israel or to serve process on our executive officers and directors and these experts.

We were incorporated in Israel. Substantially all of our executive officers and directors reside outside of the United States, and all of our assets and most of the assets of these persons are located outside of the United States. Therefore, a judgment obtained against us, or any of these persons, including a judgment based on the civil liability provisions of the U.S. federal securities laws, may not be collectible in the United States and may not be enforced by an Israeli court. It also may be difficult for you to effect service of process on these persons in the United States or to assert U.S. securities law claims in original actions instituted in Israel. Additionally, it may be difficult for an investor, or any other person or entity, to initiate an action with respect to U.S. securities laws in Israel. Israeli courts may refuse to hear a claim based on an alleged violation of U.S. securities laws reasoning that Israel is not the most appropriate forum in which to bring such a claim. In addition, even if an Israeli court agrees to hear a claim, it may determine that Israeli law and not U.S. law is applicable to the claim. If U.S. law is found to be applicable, the content of applicable U.S. law must be proven as a fact by expert witnesses, which can be a time consuming and costly process. Certain matters of procedure will also be governed by Israeli law. There is little binding case law in Israel that addresses the matters described above. As a result of the difficulty associated with enforcing a judgment against us in Israel, you may not be able to collect any damages awarded by either a U.S. or foreign court. See "Enforceability of Civil Liabilities" for additional information on your ability to enforce a civil claim against us and our executive officers or directors named in this prospectus.

Your rights and responsibilities as a shareholder will be governed in key respects by Israeli laws, which differs in some material respects from the rights and responsibilities of shareholders of U.S. companies.

The rights and responsibilities of the holders of our ordinary shares are governed by our amended and restated articles of association and by Israeli law. These rights and responsibilities differ in some material respects from the rights and responsibilities of shareholders in U.S. companies. In particular, a shareholder of an Israeli company has a duty to act in good faith and in a customary manner in exercising its rights and performing its obligations towards the company and other shareholders, and to refrain from abusing its power in such company, including, among other things, in voting at a general meeting of shareholders on matters such as amendments to a company's amended and restated articles of association, increases in a company's authorized share capital, mergers and acquisitions and related party transactions requiring shareholder approval, as well as a general duty to refrain from discriminating against other shareholders. In addition, a shareholder who is aware that it possesses the power to determine the outcome of a vote at a meeting of the shareholders or to appoint or prevent the appointment of a director or executive officer in the company has a duty of fairness toward the company. See "Management—Approval of Related Party Transactions under Israeli Law—Fiduciary Duties of Directors and Executive Officers—Shareholder Duties" for additional information. There is limited case law available to assist us in understanding the nature of these duties or the implications of these provisions. These provisions may be interpreted to impose additional obligations and liabilities on holders of our ordinary shares that are not typically imposed on shareholders of U.S. companies.

This prospectus contains forward-looking statements concerning our business, operations and financial performance and condition, as well as our plans, objectives and expectations for our business operations and financial performance and condition. Any statements contained herein that are not statements of historical facts may be deemed to be forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as "aim," "anticipate," "assume," "believe," "contemplate," "continue," "could," "due," "estimate," "expect," "goal," "intend," "may," "objective," "plan," "predict," "potential," "positioned," "seek," "should," "target," "will," "would," and other similar expressions that are predictions of or indicate future events and future trends, or the negative of these terms or other comparable terminology. These forward-looking statements include, but are not limited to, statements about:

Forward-looking statements are based on our management's current expectations, estimates, forecasts and projections about our business and the industry in which we operate and our

management's beliefs and assumptions, and are not guarantees of future performance or development and involve known and unknown risks, uncertainties and other factors that are in some cases beyond our control. As a result, any or all of our forward-looking statements in this prospectus may turn out to be inaccurate. Important factors that may cause actual results to differ materially from current expectations include, among other things, those listed under "Risk Factors" and elsewhere in this prospectus. Potential investors are urged to consider these factors carefully in evaluating the forward-looking statements.

The forward-looking statements included in this prospectus speak only as of the date of this prospectus. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee that future results, levels of activity, performance and events and circumstances reflected in the forward-looking statements will be achieved or will occur. Except as required by law, we assume no obligation to update or revise these forward-looking statements for any reason, even if new information becomes available in the future. You should, however, review the factors and risks we describe in the reports we will file from time to time with the SEC after the date of this prospectus. See "Where You Can Find More Information."

We estimate that the net proceeds from the sale of ordinary shares in this offering will be approximately $ million, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us, based on an assumed initial public offering price of $ per ordinary share, which is the midpoint of the price range set forth on the cover page of this prospectus. If the underwriters exercise their option to purchase up to an additional ordinary shares in full, we estimate that the net proceeds to us from this offering will be approximately $ million, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us. Each $1.00 increase (decrease) in the assumed initial public offering price of $ per ordinary share would increase (decrease) the net proceeds to us from this offering, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us, by $ million, assuming that the number of ordinary shares offered by us, as set forth on the cover page of this prospectus, remains the same. We may also increase or decrease the number of ordinary shares we are offering. An increase (decrease) of 1.0 million in the number of ordinary shares we are offering would increase (decrease) the net proceeds to us from this offering, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us, by $ million, assuming the assumed initial public offering price stays the same.

We intend to use the net proceeds from this offering, together with our existing cash, cash equivalents and short-term deposits, as follows:

We may also use a portion of the net proceeds from this offering to acquire or invest in complementary products, technologies or businesses, although we have no present agreements or commitments to do so.

Although we currently anticipate that we will use the net proceeds from this offering as described above, there may be circumstances where a reallocation of funds is necessary. Due to the uncertainties inherent in the clinical development and regulatory approval process, it is difficult to estimate with certainty the exact amounts of the net proceeds from this offering that may be used for any of the above purposes on a stand-alone basis. Amounts and timing of our actual expenditures will depend upon a number of factors, including our sales, marketing and commercialization efforts, regulatory approval and demand for our product candidates, operating costs and other factors described under "Risk Factors" in this prospectus. Accordingly, our management will have flexibility in applying the net proceeds from this offering. An investor will not have the opportunity to evaluate the economic, financial or other information on which we base our decisions on how to use the proceeds.

Based on our current plans, we believe that our existing cash, cash equivalents and short-term deposits, together with the net proceeds of this offering, will be sufficient to enable us to fund our operating expenses and capital expenditure requirements for . We anticipate that these funds, together with the net proceeds of this offering, will be sufficient for . We have based this estimate on assumptions that may prove to be incorrect, and we could use our available capital resources sooner than we currently expect.

Pending our application of the net proceeds from this offering, we plan to invest such proceeds in short-term, investment-grade, interest-bearing securities and depositary institutions.

We have never declared or paid any cash dividends to our shareholders of our ordinary shares, and we do not anticipate or intend to pay cash dividends in the foreseeable future. Payment of cash dividends, if any, in the future will be at the discretion of our board of directors in compliance with applicable legal requirements and will depend on a number of factors, including future earnings, our financial condition, operating results, contractual restrictions, capital requirements, business prospects, our strategic goals and plans to expand our business, applicable law and other factors that our board of directors may deem relevant.

The Israeli Companies Law imposes further restrictions on our ability to declare and pay dividends. See "Description of Share Capital—Dividend and Liquidation Rights" for additional information.

Payment of dividends may be subject to Israeli withholding taxes. See "Taxation—Material Israeli Tax Considerations" for additional information.

The following table sets forth our cash, cash equivalents and short-term deposits and capitalization as of December 31, 2019, on:

The pro forma and pro forma as adjusted data included in the table below are also unaudited. You should read this information together with our condensed consolidated financial statements appearing elsewhere in this prospectus and the information set forth under the headings "Selected Financial Data," "Use of Proceeds" and "Management's Discussion and Analysis of Financial Condition and Results of Operations."

	As of December 31, 2019

	Actual			Pro Forma			Pro Forma As Adjusted
	(unaudited) (in thousands)
Cash, cash equivalents and short-term deposits⁽¹⁾	$	26,609		$	26,622		$



Convertible preferred shares warrant liability	$	12,241		$	—		$
Preferred A, A-1, B, B-1, C-1, C-2, D-1, D-2, D-3, E and E-1 shares of NIS 0.80 par value: 18,741,017 shares authorized and pro forma actual; no shares authorized, pro forma as adjusted; 13,097,218 shares issued and outstanding, actual; no shares issued and outstanding, pro forma and pro forma as adjusted		106,313			—
Shareholders' (deficiency) equity:
Ordinary shares of NIS 0.80 par value: 23,500,000 shares authorized, actual and pro forma; shares authorized pro forma as adjusted; 588,650 shares issued and outstanding, actual; 13,742,118 shares issued and outstanding, pro forma; shares issued and outstanding, pro forma as adjusted		130			3,175
Additional paid-in capital		5,541			121,063
Accumulated deficit		(93,303	)		(93,303	)

Total shareholders' (deficiency) equity⁽¹⁾		(87,632	)		30,935

Total capitalization⁽¹⁾	$	30,922		$	30,935		$

The number of ordinary shares issued and outstanding, actual, pro forma and pro forma as adjusted shown in the foregoing table and calculations excludes:

If you invest in our ordinary shares in this offering, your interest will be immediately diluted to the extent of the difference between the initial public offering price per ordinary share in this offering and the pro forma as adjusted net tangible book value per ordinary share after this offering. Dilution results from the fact that the initial public offering price per ordinary share is substantially in excess of the net tangible book value per ordinary share. As of December 31, 2019, we had a historical net tangible book value of $18.7 million, or $31.74 per ordinary share. Our net tangible book value per share represents total tangible assets less total liabilities, divided by the number of ordinary shares outstanding on December 31, 2019.

Our pro forma net tangible book value as of December 31, 2019 was $30.9 million, or $2.25 per ordinary share. Pro forma net tangible book value per share represents total tangible assets less total liabilities, divided by the number of ordinary shares outstanding as of December 31, 2019, after giving effect to the automatic conversion of all outstanding preferred shares into ordinary shares and the exercise of warrants to purchase 56,250 Series A preferred shares, and the automatic conversion thereof into 56,250 ordinary shares, which will occur upon the closing of this offering.

After giving effect to the sale of ordinary shares in this offering at an assumed initial public offering price of $ per ordinary share, which is the midpoint of the price range set forth on the cover page of this prospectus, after deducting the estimated underwriting discounts and commissions and estimated offering expenses, and after taking into account the automatic conversion of all of our outstanding preferred shares into ordinary shares and the exercise of warrants to purchase 56,250 Series A preferred shares, and the automatic conversion thereof into 56,250 ordinary shares, which will occur upon the closing of this offering, our pro forma as adjusted net tangible book value at December 31, 2019 would have been $ per share. This represents an immediate increase in pro forma as adjusted net tangible book value of $ per share to existing shareholders and immediate dilution of $ per ordinary share to new investors. The following table illustrates this dilution per ordinary share:

The pro forma and pro forma as adjusted information is illustrative only, and we will adjust this information based on the actual initial public offering price and other terms of this offering determined at pricing. A $1.00 increase (decrease) in the assumed initial public offering price of $ per ordinary share, which is the midpoint of the price range set forth on the cover page of this prospectus, would increase (decrease) our pro forma as adjusted net tangible book value as of December 31, 2019 after this offering by approximately $ per ordinary share, and would increase (decrease) dilution to investors in this offering by $ per ordinary share, assuming that the number of ordinary shares offered by us, as set forth on the cover page of this prospectus, remains the same, after deducting the estimated underwriting discounts and commissions and estimated offering expenses

payable by us. We may also increase or decrease the number of ordinary shares we are offering. An increase (decrease) of 1.0 million in the number of ordinary shares we are offering would increase (decrease) our pro forma as adjusted net tangible book value as of December 31, 2019 after this offering by approximately $ per ordinary share, and would decrease (increase) dilution to investors in this offering by approximately $ per ordinary share, assuming the assumed initial public offering price per ordinary share remains the same, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us.

If the underwriters exercise in full their option to purchase additional ordinary shares, the pro forma as adjusted net tangible book value will increase to $ per ordinary share, representing an immediate increase in pro forma as adjusted net tangible book value to existing shareholders of $ per ordinary share and an immediate dilution of $ per ordinary share to new investors participating in this offering.

The following table shows, as of December 31, 2019, on a pro forma as adjusted basis, the number of ordinary shares purchased from us, the total consideration paid to us and the average price paid per share during the last five years by existing shareholders and by new investors purchasing ordinary shares in this offering at an assumed initial public offering price of $ per ordinary share, which is the midpoint of the price range set forth on the cover page of this prospectus, before deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us:

A $1.00 increase (decrease) in the assumed initial public offering price of $ per ordinary share (the midpoint of the price range set forth on the cover page of this prospectus) would increase (decrease) the total consideration paid by investors participating in this offering, total consideration paid by all shareholders and the average price per share paid by all shareholders by approximately $ million, $ million and $ , respectively, assuming that the number of ordinary shares offered by us, as set forth on the cover page of this prospectus, remains the same and before deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us. Similarly, a 1.0 million share increase (decrease) in the number of ordinary shares offered by us, as set forth on the cover of this prospectus, would increase (decrease) the total consideration paid by investors participating in this offering, total consideration paid by all shareholders and the average price per share paid by all shareholders by approximately $ million, $ million and $ , respectively, assuming the assumed initial public offering price of $ per ordinary share (the midpoint of the price range set forth on the cover page of this prospectus) remains the same, and after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us.

The tables and discussion above shown are based on 13,742,118 ordinary shares outstanding as of December 31, 2019, after giving effect to the automatic conversion of all outstanding preferred shares into ordinary shares and the exercise of warrants to purchase 56,250 Series A preferred shares, and the automatic conversion thereof into 56,250 ordinary shares, each of which will occur upon the closing of this offering, and excludes:

To the extent that outstanding options are exercised, new options or warrants are issued or we issue additional ordinary shares in the future, there will be further dilution to new investors. We may choose to raise additional capital due to market conditions or strategic considerations even if we believe we have sufficient funds for our current or future operating plans. To the extent that we raise additional capital through the sale of equity or convertible debt securities, the issuance of these securities could result in further dilution to our equity holders.

The following table summarizes our financial data. We have derived the following statements of operations data for the years ended December 31, 2019 and 2018 and the balance sheet data as of December 31, 2019 and 2018 from our audited consolidated financial statements included elsewhere in this prospectus, which have been prepared in accordance with U.S. GAAP. Our historical results are not necessarily indicative of the results that may be expected in the future, and our results for any interim period are not necessarily indicative of results that may be expected for any full year. The following selected financial data should be read in conjunction with "Management's Discussion and Analysis of Financial Condition and Results of Operations" and our audited consolidated financial statements and related notes included elsewhere in this prospectus.

	Year Ended December 31,

	2019			2018
	(in thousands, except share and per share amounts)
Statements of operations data:
Research and development, net	$	14,083		$	12,550
General and administrative		4,477			5,814

Operating loss		(18,560	)		(18,364	)
Financial income, net		11,655			24,281

Net (loss) profit	$	(6,905	)	$	5,917



Basic net (loss) profit per ordinary share	$	(22.65	)	$	0.15



Diluted net loss per ordinary share	$	(22.65	)	$	(0.82	)



Weighted average number of ordinary shares used in computing basic net loss per share		588,338			586,938
Weighted average number of ordinary shares used in computing diluted net loss per share		588,338			641,587



Pro forma basic and diluted net loss per ordinary share⁽¹⁾	$	(0.97	)



Weighted average number of ordinary shares used in computing, basic and diluted net loss per share—pro forma (unaudited)		13,741,806

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

You should read the following discussion in conjunction with our audited consolidated financial statements including the related notes thereto, beginning on page F-1 of this prospectus. In addition to historical information, this discussion contains forward-looking statements that involve risks and uncertainties. You should read the sections of this prospectus titled "Risk Factors" and "Special Note Regarding Forward-Looking Statements" for a discussion of the factors that could cause our actual results to differ materially from our expectations.

We are a Phase 3 clinical-stage biopharmaceutical company focused on developing targeted, locally administered and prolonged-release therapeutics using our proprietary Polymer-Lipid Encapsulation matriX, or PLEX, technology. Our product candidates are designed to address diseases with high unmet medical needs by pairing our PLEX technology with drugs already approved by the U.S. Food and Drug Administration, or the FDA. Our PLEX technology is designed to deliver drugs directly to precise sites in the body at predetermined release rates and over durations ranging from several days to several months. We believe that our PLEX technology and product candidates have the potential to cause a major shift in the management of a wide variety of localized medical conditions, including surgical site infections, or SSIs, cancer, inflammation and pain. Our lead product candidate, D-PLEX₁₀₀, is in a potentially pivotal Phase 3 clinical trial for the prevention of sternal (bone) SSIs. We also plan to initiate the first of two potentially pivotal Phase 3 trials of D-PLEX₁₀₀ for the prevention of abdominal (soft tissue) SSIs in the third quarter of 2020. We expect to report topline results from this trial at the end of 2021 and to initiate the second Phase 3 trial approximately six months after the initiation of the first trial.

Since our inception in 2008, we have incurred significant operating losses. Our operating loss for the years ended December 31, 2018 and 2019 were $18.4 million and $18.6 million, respectively. As of December 31, 2019, we had an accumulated deficit of $93.3 million. We expect to continue to incur significant expenses and operating losses for the foreseeable future, and our losses may fluctuate significantly from year to year. We anticipate that our expenses will increase significantly in connection with our ongoing activities, as we:

We do not have any product candidates approved for sale and have not generated any revenue from product sales. To date, we have financed our operations primarily through private placements of equity securities and convertible debt, as well as grants from the Israel Innovation Authority, or IIA, and the European Commission's Seventh Framework Programme for Research, or FP7. From our inception through December 31, 2019, we have raised an aggregate of $114.1 million from private placements of equity securities and convertible debt, including an aggregate of $37.6 million of net proceeds from the issuance of our Series E-1 convertible preferred shares in 2019.

To date, we have not generated any revenue from product sales and do not expect to generate any revenue from product sales for at least the next several years.

Research and development, net consist primarily of costs incurred in connection with our research and development activities. This includes conducting clinical trials and preclinical studies, manufacturing development efforts and activities related to regulatory filings for product candidates, as well as overhead costs. Our research and development expenses primarily consist of:

Research and development expenses are expensed as incurred. We record accrued expenses for research and development activities conducted, on our behalf, by third-party service providers, which include the performance of clinical trials and the conduct of preclinical studies and contract manufacturing activities. We record these accrued expenses based upon research and development activities performed by such third-party service providers and reported to us, and we include these costs in accrued liabilities in the consolidated balance sheets and within research and development expense in the consolidated statements of operations.

We typically use our employee, consultant and infrastructure resources across our development programs. We track outsourced development costs by product candidate but we do not allocate personnel costs, other internal costs or external consultant costs to specific product candidates or preclinical programs.

From inception though December 31, 2019, we have incurred approximately $60.3 million in research and development expenses, net to advance the development of our clinical-stage product candidates, as well as other preclinical research and development programs. As of December 31, 2019, we have received royalty-bearing grants of $4.9 million in the aggregate from the IIA. Pursuant to the terms of the grants, we are required to pay royalties of 3.0% to the IIA on revenues from sales of products for which the research and development was funded, in whole or in part, by the IIA, up to a limit of 100% of the amount of the grant received, plus annual interest calculated at a rate based on 12-month LIBOR. In addition, we must abide by other restrictions associated with the receipt of such grants under the R&D Law that continues to apply following repayment to IIA. These restrictions may impair our ability to outsource manufacturing, engage in change of control transactions or otherwise transfer our knowledge outside of Israel and may require us to obtain IIA approval for certain actions and transactions and pay additional amounts to the IIA. In addition, any change of control and any change of ownership of our ordinary shares that would make a non-Israel citizen or resident an "interested party" as defined in the R&D Law requires prior written notice from the IIA. As of December 31, 2019, we have also received non-royalty bearing grants of $0.3 million in the aggregate from the IIA and $0.7 million in the aggregate from the FP7.

Substantially all of our research and development expenses for the years ended December 31, 2018 and 2019 were related to the development of D-PLEX₁₀₀.

We expect our research and development expenses will increase for the foreseeable future as we seek to advance D-PLEX₁₀₀ through Phase 3 clinical trials, including the cost of manufacturing drug supply for these clinical trials, further our preclinical studies and other research and development programs. At this time, we cannot reasonably estimate or know the nature, timing and estimated costs of the efforts that will be necessary to complete the development of our product candidates. We are also unable to predict when, if ever, material net cash inflows will commence from sales of our product candidates. This is due to the numerous risks and uncertainties associated with developing such product candidates, including the uncertainty of:

Our expenses may also increase if we encounter further delays or setbacks in the enrollment or conduct of our clinical trials for D-PLEX₁₀₀ due to the COVID-19 pandemic.

A change in the outcome of any of these variables with respect to the development of any of our product candidates would significantly change the costs, timing and viability associated with the development of that product candidate.

General and administrative expenses consist primarily of salaries and personnel-related expenses, including benefits and share-based compensation expense, for employees performing functions other than research and development. This includes personnel in executive, finance, business development, marketing and administrative support functions. Other general and administrative expenses include professional fees for auditing, tax and legal services and other consulting fees, as well as facility-related costs not otherwise allocated to research and development.

We expect our general and administrative expenses will increase in the future to support continued research and development activities. We also anticipate that we will incur increased accounting, audit, legal, regulatory, compliance and director and officer insurance costs, as well as investor, public relations and compliance expenses, associated with operating as a public company. We expect increased expenses if any of our product candidates receives regulatory approval and we determine to build a commercial infrastructure to support commercial sales and marketing of our products.

Financial income, net consists of reevaluation of our preferred share warrant liability, as well as interest income on our short-term deposits and our foreign exchange gains and losses.

The following table summarizes our results of operations for the years ended December 31, 2018 and 2019:

Research and development, net increased by $1.5 million for the year ended December 31, 2019 compared to the year ended December 31, 2018. This increase was primarily related to additional costs of $2.0 million attributable to our manufacturing facility, research costs of $1.7 million related to our Phase 1b/2 clinical trial and Phase 2 clinical trial of D-PLEX₁₀₀ and a decrease in IIA grants of $0.1 million. These increases were partially offset by decreases in CMC costs of $1.9 million resulting from the establishment of the manufacturing facility, as well as a decrease of $0.6 million in costs related to preclinical studies, regulatory expenses and other research and development projects.

General and administrative decreased by $1.3 million for the year ended December 31, 2019 compared to the year ended December 31, 2018. This decrease was primarily related to the $1.3 million

write-off of initial public offering expenses in 2018 and a decrease in legal and professional costs of $0.5 million.

Financial income, net decreased by $12.6 million for the year ended December 31, 2019 compared to the year ended December 31, 2018. This decrease was driven by the reevaluation of our convertible preferred share warrant liability following the decrease in fair value of the warrants. This decrease was partially offset by income related to exchange rate differences of $0.2 million in 2019, compared to losses of $0.3 million in 2018.

Net loss attributable to ordinary shares for the year ended December 31, 2019 increased by $13.4 million for the year ended December 31, 2019 compared to the year ended December 31, 2018. This increase was primarily related to the decrease in financial income, net of $12.6 million and the increase in research and development, net of $1.5 million. This increase was partially offset by the decrease in general and administrative of $1.3 million.

Since our inception, we have not generated any revenue and have incurred operating losses and negative cash flows from our operations. We have funded our operations primarily through the sale of equity securities and convertible debt. From our inception through December 31, 2019, we have raised an aggregate of $114.1 million from private placements of equity securities and convertible debt, including an aggregate of $37.6 million of net proceeds from the issuance of our Series E-1 convertible preferred shares in 2019. As of December 31, 2019, we had $26.6 million in cash, cash equivalents and short-term deposits.

We currently have no ongoing material financing commitments, such as lines of credit or guarantees that are expected to affect our liquidity over the next five years, other than our lease obligations.

In addition to the foregoing, based on our current assessment, we do not expect any material impact on our long-term liquidity due to the COVID-19 pandemic. However, we will continue to assess the effect of the pandemic to our operations. The extent to which the COVID-19 pandemic will impact our business and operations will depend on future developments that are highly uncertain and cannot be predicted with confidence, such as the ultimate geographic spread of the disease, the duration of the COVID-19 pandemic, any restrictions on the ability of hospitals and trial sites to conduct trials that are not designed to address the COVID-19 pandemic, any further delays to enrollment of our Phase 3 trial of D-PLEX₁₀₀ for the prevention of sternal SSIs and the perceived effectiveness of actions taken in Israel, the United States and Europe and other countries to contain and treat the disease. While the potential economic impact brought by COVID-19 may be difficult to assess or predict, a widespread pandemic could result in significant disruption of global financial markets, reducing our ability to access capital in the future. In addition, a recession or long-term market correction resulting from the spread of COVID-19 could materially affect our business and the value of our common stock.

The following table provides information regarding our cash flows for the periods indicated:

Net cash used in operating activities related primarily to our net losses adjusted for non-cash charges and measurements and changes in components of working capital. Adjustments to net loss for non-cash items mainly included depreciation, reevaluation of convertible preferred share warrants and share-based compensation.

Net cash used in operating activities was $17.4 million for the year ended December 31, 2019, as compared to $16.7 million for the year ended December 31, 2018. This increase was primarily related to increased research and development costs and associated general and administrative expenses, as we conducted clinical trials related to D-PLEX₁₀₀.

Net cash used in investing activities related primarily to the purchase of short-term deposits and the acquisition of laboratory equipment, office equipment and furniture and leasehold improvements.

Net cash used in investing activities was $23.6 million for the year ended December 31, 2019, as compared to net cash provided by investing activities of $11.0 million for the year ended December 31, 2018. This increase in net cash used in investing activities primarily related to the purchase of short-term deposits, partially offset by a decrease in the purchase of equipment.

Net cash provided by financing activities was $37.7 million for the year ended December 31, 2019, as compared to $9.4 million for the year ended December 31, 2018, each related to the issuance of our Series E-1 convertible preferred shares.

To date, we have not generated any revenues from the commercial sale of our product candidates, and we do not expect to generate revenue for at least the next several years. We expect our expenses to increase in connection with our ongoing activities, particularly as we continue and/or initiate Phase 3 clinical trials of, and seek marketing approval for, D-PLEX₁₀₀ and as we continue the research and development of our other existing and future product candidates. In addition, if we obtain marketing approval for D-PLEX₁₀₀ or any other product candidates, we expect to incur significant commercialization expenses related to product sales, marketing, manufacturing and distribution to the extent that such sales, marketing, manufacturing and distribution are not the responsibility of potential collaborators. Furthermore, following the completion of this offering, we expect to incur additional costs associated with operating as a public company. Accordingly, we will need to obtain substantial

additional funding in connection with our continuing operations, including to resume enrollment in our Phase 3 trial of D-PLEX₁₀₀ for the prevention of sternal (bone) SSIs. If we are unable to raise capital when needed or on attractive terms, we would be forced to delay, reduce or eliminate our research and development programs or future commercialization efforts.

We expect that our existing cash and cash equivalents and short-term deposits will enable us to fund our operating expenses and capital expenditure requirements for at least the next 12 months. We anticipate that these funds, together with the net proceeds of this offering, will be sufficient to . We anticipate that these funds, together with the net proceeds of this offering, will be sufficient for . We anticipate that we will need to raise additional capital in order to commercialize D-PLEX₁₀₀, if approved, in any indication. Our future capital requirements will depend on many factors, including:

Identifying potential product candidates and conducting clinical trials and preclinical studies is a time-consuming, expensive and uncertain process that takes many years to complete, and we may never generate the necessary data or results required to obtain marketing approval and achieve product sales. In addition, our product candidates, if approved, may not achieve commercial success. Our commercial revenues, if any, will be derived from sales of product candidates that we do not expect to be commercially available for several years, if at all. Accordingly, we will need to continue to rely on additional financing to achieve our business objectives. Adequate additional financing may not be available to us on acceptable terms, or at all.

Until such time, if ever, as we can generate substantial product revenues, we expect to finance our cash needs through a combination of equity offerings, debt financings, grants, collaborations, strategic alliances and licensing arrangements. To the extent that we raise additional capital through the sale of equity or convertible debt securities, your ownership interest will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect your rights as a

shareholder. Debt financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise funds through collaborations, strategic alliances or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or to grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

The following table summarizes our contractual obligations and commitments at December 31, 2019:

The commitment amounts in the table above are associated with contracts that are enforceable and legally binding. The table does not include obligations under agreements that we can cancel without a significant penalty.

We enter into contracts in the normal course of business for clinical trials, preclinical studies, manufacturing and other services and products for operating purposes. These contracts generally provide for termination upon notice, and therefore we believe that our non-cancelable obligations under these agreements are not material.

We do not have any relationships with unconsolidated entities or financial partnerships, including entities sometimes referred to as structured finance or special purpose entities that were established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes. We do not engage in off-balance sheet financing arrangements. In addition, we do not engage in trading activities involving non-exchange traded contracts.

Our consolidated financial statements are prepared in accordance with accepted accounting principles generally accepted in the United States. The preparation of our consolidated financial statements requires us to make estimates, assumptions and judgments that affect the reported amounts of assets, liabilities, costs and expenses. We base our estimates and assumptions on historical experience and other factors that we believe to be reasonable under the circumstances. We evaluate our estimates and assumptions on an ongoing basis. Our actual results may differ from these estimates. Our most critical accounting policies are summarized below. See note 2 to our consolidated financial statements beginning on page F-1 of this prospectus for a description of our other significant accounting policies.

We account for share-based compensation in accordance with ASC No. 718, "Compensation—Stock Compensation," which requires companies to estimate the fair value of equity-based payment awards on the date of grant using the option-pricing model, or OPM. We recognize compensation expenses for the value of our awards granted based on the straight-line attribution method over the requisite service period of each of the awards. We recognize forfeitures of awards as they occur.

We recognize compensation costs only for those shares expected to vest using the straight line method over the requisite service period of the award, which is generally the option vesting term of three years. We recognize forfeitures of awards as they occur.

We selected the Black-Scholes-Merton model as the most appropriate fair value method for our option awards. The Black-Scholes-Merton model requires a number of assumptions, of which the most significant are the expected share price, volatility and the expected option term.

The fair value of ordinary shares underlying the options has historically been determined by our management and the board of directors with the assistance of an independent financial and economic consultant. As there has been no public market for our ordinary shares, our board of directors has determined fair value of an ordinary share at the time of grant of the option by considering a number of objective and subjective factors including data from other comparable companies, sales of convertible preferred shares to unrelated third parties, our operating and financial performance, the lack of liquidity of share capital and general and industry specific economic outlook, amongt other factors. The fair value of the underlying ordinary shares will be determined by our board of directors until such time as our ordinary shares are listed on an established share exchange or national market system. Our board of directors determined the fair value of ordinary shares based on independent valuations performed using the hybrid method, which takes into account the initial public offering and the non-initial public offering scenario method as of December 31, 2019.

The Black-Scholes-Merton option-pricing model requires the input of highly subjective assumptions, including the fair value of the underlying ordinary shares, the expected volatility of the price of our ordinary shares, the expected term of the option, risk-free interest rates and the expected dividend yield of our ordinary shares. These estimates involve inherent uncertainties and the application of the management's judgment. If such inputs change and different assumptions are used, our share-based compensation expenses could be materially different in the future. These assumptions are estimated as follows:

If any of the assumptions used in the Black-Scholes-Merton model change significantly, the share-based compensation expenses in future awards may differ materially as compared with the current awards granted.

The following table presents the assumptions used to estimate the fair value of options granted to employees, non-employee directors and service providers during the periods presented:

We incurred non-cash share-based compensation expense of $1.0 million during the years ended December 31, 2019 and 2018. We expect to continue to grant share option awards in the future, and to the extent that we do, our actual share-based compensation expenses recognized are likely to increase.

The following table summarizes by grant date the number of ordinary shares subject to share option awards granted between January 1, 2018 and December 31, 2019, as well as the associated per-ordinary share exercise price of the award, the estimated fair value per ordinary share on the grant date and the aggregate grant date fair value:

Option Grant Date		Estimated Fair Value Per Ordinary Share at Grant Date		Exercise Price Per Ordinary Share		Aggregate Grant Date Fair Value⁽¹⁾⁽²⁾

January 30, 2018	6,250	$	8.27	$	8.27	$	71
September 4, 2018	1,250	$	8.05	$	8.05	$	8
October 16, 2018	6,688	$	8.27	$	8.05	$	44
December 3, 2018	3,750	$	8.27	$	8.27	$	23
December 18, 2018	3,750	$	8.27	$	8.27	$	23
February 3, 2019	2,500	$	7.67	$	8.27	$	13
March 19, 2019	27,750	$	7.67	$	7.67	$	145
May 23, 2019	52,500	$	7.86	$	7.67	$	229
August 7, 2019	75,000	$	6.47	$	7.67-8.27	$	308

Based upon the assumed initial public offering price of $ per ordinary share, the midpoint of the range set forth on the cover page of this prospectus, the intrinsic value of the awards

outstanding as of December 31, 2019 was $ million, of which $ million related to vested options and $ million related to unvested options.

The fair value of the ordinary shares underlying our option awards was determined by our board of directors, with input from management. We believe that our board of directors has the relevant experience and expertise to determine the fair value of our ordinary share as of each respective grant date. The valuations of our ordinary shares were determined in accordance with the guidelines outlined in the American Institute of Certified Public Accountants Practice Aid, Valuation of Privately-Held-Company Equity Securities Issued as Compensation, or the AICPA Practice Aid. The assumptions used in the valuation model are based on future expectations combined with management judgment. Our board of directors, with input from management, exercised significant judgment and considered numerous objective and subjective factors to determine the fair value of our ordinary shares as of the date of each option grant, including the following factors:

In the event of a qualified initial public offering, our preferred shares would convert into ordinary shares on a one-to-one basis, and accordingly would receive the same amount of proceeds per share as ordinary shares. In the case of a sale or liquidation of our company, the preferred shares would receive their liquidation preferences and thereafter a fraction in the remaining proceeds with the ordinary shares on a pro-rata basis. Accordingly, we determined the fair value of our ordinary shares under two scenarios and then applied a weighted average of these values based on their relative probabilities in order to calculate the final per share value.

First, we determined value in an exit scenario due to a liquidity event, such as an initial public offering using the market approach and based on discussions with investment banks. In this scenario, all preferred shares, warrants to purchase preferred shares and options to purchase our ordinary shares convert into, or are deemed to be exercised for, ordinary shares. The firm value is divided by the resulting number of shares to determine a per share value.

Second, the equity value was determined based on, among other things, financing transactions with third parties.

We then allocated the value between all elements of our securities (preferred shares, ordinary shares, warrants for preferred shares and options for ordinary shares) using the OPM, on the assumption that our preferred shares will benefit from their liquidation preference.

Under the OPM, preferred and ordinary shares are treated as a series of call options, with the preferred shares having an exercise price based on the liquidation preference of the respective preferred share. The OPM operates through a series of Black-Scholes-Merton option pricing models, with the exercise prices of the options representing the upper and lower bounds of the proceed ranges that a security holder would receive upon a liquidity event. The strike prices occur at break points where the allocation of firm value changes among the various security holders. The ordinary shares are presumed to have value only if funds available for distribution to shareholders exceed the value of the respective liquidation preferences at the time of a liquidity event. The OPM requires an enterprise level input of firm value or a transaction level input of specific security value (typically, a recently issued convertible preferred security) to anchor the allocation of firm value among the various classes of securities.

In making the final determination, we also applied a discount for lack of marketability right, as applicable, to our ordinary shares.

Second, we determined value using the Probability Weighted Excepted Return Method, or PWERM. The PWERM is a scenario-based methodology that estimates the fair value of our ordinary shares based upon an analysis of future values for our company, assuming various outcomes. The ordinary share value is based on the probability-weighted present value of expected future investment returns considering each of the possible outcomes available, as well as the rights of each class of our outstanding capital stock. The weighted average enterprise value is then calculated by applying the unleveraged discounted cash flow approach. We believe that this is the most appropriate valuation method as it theoretically captures various future possible outcomes, including an initial public offering.

In making the final determination, we also applied a discount for lack of marketability right, as applicable, to our ordinary shares.

Following the completion of our initial public offering and the listing of our ordinary shares on The Nasdaq Global Market, the determination of the fair market value of our ordinary shares for purposes of setting the exercise price of future option awards or other share-based compensation to

employees and other grantees will be based on the market price of our ordinary shares and will no longer require good faith estimates by our board of directors based on various comparisons or benchmarks.

We classify convertible preferred shares that are redeemable under certain circumstances outside of our control as mezzanine equity on the balance sheet. They are not included as a component of shareholders' equity (deficiency). The carrying value of the preferred shares is equal to cost. We did not adjust the carrying value to redemption value since it is not probable that the preferred shares will be redeemed.

Warrants to purchase our convertible preferred shares are classified as a liability on the balance sheet, and measured at fair value, as the underlying shares are contingently redeemable (upon a deemed liquidation event) and, therefore, may obligate us to transfer assets at some point in the future. The warrants are subject to re-measurement to fair value at each balance sheet date and any change in fair value is recognized as a component of financial income, net, in the statement of operations.

Our board of directors calculates the fair value of the warrants on the issuance date and on subsequent reporting dates, considering among other things, a third-party valuation. We first calculated the underlying preferred share value by using the income approach and the market approach. Then the equity value was allocated by using the hybrid model method utilizing OPM and initial public offering discount. Once the preferred shares value was derived from the two scenarios, the Black-Scholes-Merton model was utilized to calculate the warrants value in each one of the scenarios. 50% probability for each one of the scenarios was applied to derive the weighted average fair value of the warrants. In making the final determination, we also applied a discount for lack of marketability right, as applicable, to our ordinary shares.

Royalty-bearing grants from the IIA for funding approved research and development projects are recognized at the time we are entitled to such grants, on the basis of the costs incurred, and are presented as a deduction from research and development expenses. Since the payment of royalties is not probable when the grants are received, we do not record a liability for amounts received from the IIA until the related revenues are recognized. Non-royalty-bearing grants from the IIA MAGNET program and from FP7 for funding approved research and development projects are recognized at the time we are entitled to such grants, on the basis of the costs incurred, and are presented as a deduction from research and development expenses. In the event of failure of a project that was partly financed by the IIA, we would not be obligated to pay any royalties or repay the amounts received.

As of December 31, 2019, we have received royalty-bearing grants totaling $4.9 million. Pursuant to the terms of the grants, we are required to pay royalties to the IIA of 3.0% on revenues from sales of products developed financed in whole or in part by IIA, up to a limit of 100% of the grants received, plus annual interest calculated on the 12-month LIBOR rate as published on the first business day of each calendar year.

In addition, we must abide by other restrictions associated with the receipt of such grants under the R&D Law that continue to apply following repayment to the IIA. These restrictions may impair our ability to outsource manufacturing or otherwise transfer our knowledge outside of Israel, or engage in change of control transactions, and may require us to obtain IIA approval for certain actions and transactions and pay additional amounts to the IIA. In addition, any change of control and any change

of ownership of our ordinary shares that would make a non-Israel citizen or resident an "interested party" as defined in the R&D Law requires prior written notice from the IIA.

See note 2 to our consolidated financial statements beginning on page F-1 of this prospectus for a description of recent accounting pronouncements applicable to our consolidated financial statements.

We operate primarily in Israel, and approximately 75% of our expenses are denominated in New Israeli Shekels, or NIS. We are therefore exposed to market risk, which represents the risk of loss that may impact our financial position due to adverse changes in financial market prices and rates. We are subject to fluctuations in foreign currency rates in connection with these arrangements. Changes of 5% and 10% in the U.S. dollar/NIS exchange rate would have increased/decreased operating expenses by approximately 4% and 8%, respectively, during the fiscal year ended December 31, 2019.

We currently partially hedge our foreign currency exchange rate risk to decrease the risk of financial exposure from fluctuations in the exchange rates of our principal operating currencies. These measures, however, may not adequately protect us from the material adverse effects of such fluctuations.

We do not anticipate undertaking any significant long-term borrowings. At present, our investments consist primarily of cash and cash equivalents and short-term deposits. We may invest in investment-grade marketable securities with maturities of up to three years, including commercial paper, money market funds, and government/non-government debt securities. The primary objective of our investment activities is to preserve principal while maximizing the income that we receive from our investments without significantly increasing risk and loss. Our investments may be exposed to market risk due to fluctuation in interest rates, which may affect our interest income and the fair market value of our investments, if any.

Inflation generally affects us by increasing our NIS-denominated expenses, including salaries and benefits, as well as facility rental costs and payment to local suppliers. We do not believe that inflation had a material effect on our business, financial condition or results of operations during the years ended December 31, 2018 and 2019.

Section 107 of the JOBS Act provides that an "emerging growth company" can take advantage of the extended transition period provided in Section 7(a)(2)(B) of the Securities Act for complying with new or revised accounting standards. Thus, an emerging growth company can delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. We have elected to take advantage of the extended transition period to comply with new or revised accounting standards and to adopt certain of the reduced disclosure requirements available to emerging growth companies. As a result of the accounting standards election, we will not be subject to the same implementation timing for new or revised accounting standards as other public companies that are not emerging growth companies which may make comparison of our financials to those of other public companies more difficult.

We are in the process of evaluating the benefits of relying on other exemptions and reduced reporting requirements under the JOBS Act. Subject to certain conditions, as an emerging growth company, we may rely on certain of these exemptions, including without limitation, (i) providing an auditor's attestation report on our system of internal controls over financial reporting pursuant to Section 404(b) of the Sarbanes-Oxley Act and (ii) complying with any requirement that may be adopted by the Public Company Accounting Oversight Board regarding mandatory audit firm rotation or a supplement to the auditor's report providing additional information about the audit and the financial statements, known as the auditor discussion and analysis. We will remain an emerging growth company until the earlier to occur of (1) the last day of the fiscal year (a) following the fifth anniversary of the completion of this offering, (b) in which we have total annual gross revenues of at least $1.07 billion or (c) in which we are deemed to be a "large accelerated filer" under the rules of the U.S. Securities and Exchange Commission, which means the market value of our ordinary shares that is held by non-affiliates exceeds $700.0 million as of the prior June 30th, and (2) the date on which we have issued more than $1.0 billion in non-convertible debt during the prior three-year period.

D-PLEX pairs our novel, proprietary PLEX technology with doxycycline, a first-line, broad spectrum and FDA-approved antibiotic. In our clinical trials to date, patients treated with D-PLEX demonstrated a reduction in SSIs compared to patients treated with the standard of care alone. Our lead product candidate, D-PLEX₁₀₀, is currently in a potentially pivotal Phase 3 clinical trial for the prevention of SSIs in sternal (bone) surgeries, and we plan to initiate the first of two potentially pivotal Phase 3 trials of D-PLEX₁₀₀ for the prevention of abdominal (soft tissue) SSIs in the third quarter of 2020. We expect to report topline results from the first trial at the end of 2021. Infections resulting from surgery can be fatal and create a significant public health burden despite the extensive use of systemically administered antibiotics both pre- and post-operatively and other measures taken to reduce infection risk in the intra-operative setting. SSIs occur in approximately 2% to 5% of all patients undergoing inpatient surgery worldwide. The WHO and the Centers for Disease Control and Prevention, or CDC, have recently labeled SSIs as a high priority unmet medical need due to the associated morbidity, mortality and economic cost burden.

arm. In this trial, D-PLEX₁₀₀ was observed to be generally well tolerated, with no confirmed drug-related serious adverse events, or SAEs, and did not increase wound healing impairment at the incision site as compared to the control arm.

In January 2018, we reported data from our Phase 1b/2 clinical trial of D-PLEX₁₀₀ for the prevention of sternal SSIs after cardiac surgery. None of the 58 patients treated with D-PLEX₁₀₀ and the standard of care had a sternal infection within 90 days post-surgery, which was the primary endpoint of the trial, as compared to one patient in the group treated with the standard of care alone, representing a 4.3% infection rate. In this trial, D-PLEX₁₀₀ was observed to be generally well tolerated, with no drug-related SAEs and no drug-related wound healing issues at the incision site.

In December 2019, we initiated a potentially pivotal Phase 3 clinical trial of D-PLEX₁₀₀ for the prevention of sternal (bone) SSIs, and we enrolled the first patient in February 2020. We expect to enroll between 1,284 and 1,600 cardiac surgery patients in the trial. We have paused enrollment in this trial due to the COVID-19 pandemic, but we have informed investigators that they should continue monitoring current patients per the trial protocol. Pending the availability of additional funding following this offering, we expect to resume enrollment when we believe it is safe to do so and anticipate conducting an interim analysis after a total of 850 patients have been assessed for the presence of at least one sternal wound infection or mortality for any reason within 90 days post-surgery. In February 2020, we held an end of Phase 2 meeting with the FDA to discuss our proposed potentially pivotal Phase 3 clinical trials of D-PLEX₁₀₀ for the prevention of abdominal (soft tissue) SSIs. We plan to initiate the first Phase 3 trial in this indication in the third quarter of 2020 and the second Phase 3 trial approximately six months after the initiation of the first trial. We expect to report topline results from the first trial at the end of 2021. We intend to pursue a broad label for D-PLEX₁₀₀ for the prevention of SSIs, the scope of which will depend on the clinical data generated from our Phase 3 clinical trials and discussions with the FDA and the European Medicines Agency, or the EMA.

We intend to seek approval of D-PLEX₁₀₀ under Section 505(b)(2) of the Federal Food, Drug and Cosmetic Act, or FFDCA, which provides an abbreviated pathway for marketing approval by the FDA in the United States, and will seek approval under the comparable hybrid application pathway in the European Union. Such abbreviated approval pathways may not lead to a faster development or review process compared to traditional approval pathways and do not increase the likelihood that D-PLEX₁₀₀ will receive regulatory approval in the United States or the European Union. We also received two Qualified Infectious Disease Product, or QIDP, designations from the FDA for D-PLEX₁₀₀ for the prevention of post-abdominal surgery incisional infection and for the prevention of sternal wound infection post-cardiac surgery. The QIDP designation from the FDA confers, among other benefits, a five-year extension to any period of non-patent exclusivity awarded upon approval, such as a three-year period of exclusivity for new clinical investigations of previously approved products, which we expect for D-PLEX₁₀₀, if approved. Additionally, in November 2018 we received Fast Track Designation from the FDA for D-PLEX₁₀₀ for topical use for the prevention of sternal infections post-cardiac surgery, which could potentially expedite the FDA's review of D-PLEX₁₀₀ and enables early and frequent communication with the FDA as we continue to generate data from our ongoing and planned clinical trials.

Our PLEX technology consists of a proprietary matrix of several thousand layers of chemically inactive and biocompatible polymers and lipids that physically embed the drug within the layers. A drug stored within the PLEX layers is released over time in a controlled manner and in customizable, predetermined amounts at the local site where it is administered. PLEX technology is designed to protect the embedded medication from the natural enzymes and other biochemicals in the body that would otherwise degrade or alter the drug. Over time, natural hydration in the body disintegrates the layers of PLEX, from the outer layer to the inner layers, which triggers a release of the medicine in an unmodified, active form. We believe that these characteristics may enable our PLEX product

candidates to be efficacious using only a small fraction of the medicines required in systemic administration.

As of May 31, 2020, we have 79 issued patents, including utility and composition of matter patents, and four allowed patent applications. Additionally, we have 32 pending patent applications in the United States, the European Patent Office, Canada, Australia, China, Japan, Israel, Brazil, the Eurasian Patent Organization, India, Mexico, New Zealand, the Philippines, Singapore, South Korea and Thailand. Our issued patents expire between 2029 and 2035.

In October 2018, we completed the construction of an approximately 10,500 square foot, state-of-the-art, sterile manufacturing facility in Israel to enhance supply chain control, increase our supply capacity and meet clinical demand for our ongoing and planned clinical trials of D-PLEX₁₀₀, as well as for initial commercial demand if D-PLEX₁₀₀ is approved. The facility is designed to comply with the FDA's current good manufacturing practice, or cGMP, regulations, and EMA regulations. In 2019, the facility was cGMP certified by Israel's Ministry of Health, or IMOH, and inspected by an EU-qualified person, enabling cGMP manufacturing of D-PLEX₁₀₀ for our ongoing and planned potentially pivotal Phase 3 clinical trials to be conducted in the United States and Europe.

The systemic administration of drugs may have significant disadvantages for the treatment of localized medical conditions in the body, including limited efficacy due to poor penetration from the blood stream into the needed organ or other target tissues and challenges related to sensitivity to blood factors. This limited efficacy often results in the need to use a significantly higher quantity of drugs over a prolonged period of time, which can result in substantial side effects. Additionally, systemic administration can be associated with complexities of drug-drug interactions in the context of polypharmacy for patients with comorbid conditions. In the case of antibiotics, systemic administration results in challenges related to the emergence of antibiotic resistance.

Localized delivery of medications for site-specific conditions may have significant advantages over systemic administration because it has the potential to increase the efficacy and clinical benefit of the treatment. Localized delivery may also reduce the risk of overall toxicity and adverse side effects, improve patient compliance and enable a much lower amount of medicine to be used in treatment. In order to address the limitations of systemic administration to treat localized medical conditions, an effective localized drug delivery system must be able to selectively deliver the needed medication to the specific target site, ensure the appropriate concentration needed and release the active medication in a controlled, consistent method over the entire desired treatment period.

Existing localized treatments, including extended release formulations based on polymer-only or lipid-only technologies, such as liposomal-based technologies, frequently suffer from one or more of the following limitations:

These disadvantages are significantly challenging for the management of SSIs, where the controlled and prolonged local delivery of a drug is likely to be more effective in preventing and managing an infection than a release profile of an initial high burst of drug over a shorter duration. While we believe that localized drug delivery systems are well suited for the management of SSIs, it is important for these systems to overcome these limitations in order to change the treatment paradigm for infection management.

These limitations are particularly problematic in treating infection caused by bacteria that are resistant to currently available treatments, such as methicillin-resistant Staphylococcus aureus, or MRSA. The inability to generate a sufficiently high local concentration of a drug for an extended period of time limits the drug's effectiveness in treating antibiotic-resistant bacterial infections.

Our PLEX technology is designed to overcome the limitations of both systemic administration and current localized delivery systems. PLEX consists of a proprietary matrix of several thousand alternating layers of chemically-inactive and biocompatible polymers and lipids that physically embed an active medication in a protected reservoir between the layers. The technology is designed to enable localized drug delivery at customizable, predetermined release rates and durations directly at the target site over periods ranging from several days to several months. For example, D-PLEX₁₀₀ consists of approximately ten thousand layers of biodegradable polymers and lipids. Medications stored between the PLEX matrix layers are released over time in a controlled manner and in customizable, predetermined amounts by the gradual disintegration of the layers, from the outer layer to the inner layers. PLEX is designed to protect the embedded drug from the body's natural hydration and enzymes that would otherwise degrade or alter the underlying drug. Over time, natural hydration in the body

disintegrates the outer layers of PLEX, which triggers release of the drug in an unmodified active form, similar to continuous direct administration, as illustrated below:

Doxycycline received FDA approval in 1967 and is on the WHO's Essential Medicines List for drugs deemed to be among the safest and most effective for addressing important public health needs today. Doxycycline has been safely used for decades in millions of patients globally and has the following additional advantages over many other antibiotics:

D-PLEX₁₀₀ is designed to prevent SSIs by releasing doxycycline locally to the surgical site at predetermined release rates and durations for up to four weeks. The plasma concentration of doxycycline following treatment with D-PLEX₁₀₀ is lower than the plasma concentration following the commonly used daily dose of orally administered doxycycline. We believe that this prolonged delivery following a single administration and subsequent high local concentrations of the antibiotic supersedes

any existing antibiotic delivery system, and as such may offer advantages over systemic treatments in the prevention of SSIs, including against many antibiotic-resistant bacterial strains. We believe that, by combining doxycycline with PLEX, D-PLEX₁₀₀ has the potential to overcome these limitations and deliver significant advantages in the prevention of SSIs, including:

D-PLEX₁₀₀ has the potential to positively impact the treatment paradigm for SSIs. For example, we have observed in our clinical trials that surgeons applying D-PLEX₁₀₀ directly to an open wound during an initial surgery avoided repeated surgical interventions to treat an active infection. Moreover, because it uses a smaller dose of doxycycline, we believe that D-PLEX₁₀₀ will not contribute to the growing problem of antibiotic-resistant bacteria.

Further, we believe D-PLEX₁₀₀ has the potential to treat antibiotic-resistant bacterial infections, where the required concentrations of drugs to overcome the infection cannot be delivered safely via systemic administration. In three investigator-initiated compassionate use cases, patients with severe bone bacterial infections, including MRSA, were treated with D-PLEX₁₀₀ or D-PLEX₁₀₀₀, a predecessor product candidate to D-PLEX₁₀₀. After a single application of D-PLEX, the infection was eradicated in all patients. In preclinical studies, we also observed that a single application of D-PLEX₁₀₀ substantially reduced MRSA and vancomycin-resistant bacterial infections in surgical sites.

Hospital acquired infections, or HAIs, are infections that patients acquire when receiving medical treatment in a healthcare facility. According to the WHO, HAIs are the most frequent adverse event affecting patient safety worldwide. SSIs are the second most common HAI in both the United States and the European Union and occur in approximately 2% to 5% of all patients undergoing inpatient surgery worldwide despite accepted antibiotic strategies intended to prevent infection. However, these figures are likely underestimated for a number of reasons, including surgeon underreporting and negative reimbursement implications, and because approximately 50% of SSIs become evident only after a patient has been discharged. Further, the incidence and morbidity of SSIs may differ based on the surgical procedure performed and underlying patient risk factors.

SSIs prolong patient recovery and cause a substantial increase in the clinical and economic burdens of surgery, due to longer hospital stays, as well as increased costs related to diagnostic tests and management of the infection. Certain patients may require readmission, subsequent surgeries and other interventions, as well as further outpatient care, due to SSIs. According to the WHO, SSIs account for an estimated $10 billion of incremental hospital costs per year in the United States and €11 billion per year in the European Union. Directly attributable costs of SSIs range from approximately $11,000 to $26,000 per infection. In more complex infections involving a prosthetic joint or an antimicrobial-resistant organism, the costs per case can exceed $90,000. SSIs are associated with approximately seven to eleven additional post-operative hospital days, and patients with an SSI have a two to eleven times

increased risk of death compared to infection-free patients. Following discharge from the hospital, SSI patients may also require healthcare from other community care services, further contributing to the overall economic burden of the infection. The CDC estimates that the financial costs of treating SSIs will continue to increase, both because more surgeries are being performed and because surgical patients present with increasingly complex comorbidities. Moreover, in the United States, CMS tracks SSI rates, particularly those following hysterectomies and colorectal resection surgeries, and are increasingly using these statistics to deny reimbursement claims for certain SSIs or reduce total annual CMS payments for hospitals that CMS deems to not meet certain quality metrics for the prevention of infection. CMS also publishes the SSI incidence rate for hospitals, and, consequently, hospitals have economic and reputational, in addition to human, incentives to prevent SSIs.

Despite the high incidence of SSIs, a large proportion of SSIs are estimated to be preventable with the use of evidence-based measures. The prevention of SSIs is complex and requires the implementation of a range of prevention and treatment approaches before, during and after surgery. Most significantly, the WHO, CDC and other health organizations recommend the use of systemic and antiseptic measures prior to surgery to help prevent SSIs; however, systemic administration of antibiotics comes with the risk of further development of antibiotic-resistant bacteria.

We believe that D-PLEX₁₀₀, if approved, may provide significant health economic benefits that play an important role in formulary decision making. Members of our management team have experience in applying health economic outcomes research to support the launch of successful commercial products. Our goal is to work directly with hospital customers, group purchasing organizations, integrated health networks, payors, quality improvement organizations and key opinion leaders in the field of SSI prevention to deliver data showing the potential for demonstrable pharmacoeconomic benefits from the use of D-PLEX₁₀₀, if approved.

Reimbursement for surgical procedures is typically capitated or fixed by third-party payors based on the specific surgical procedure performed. However, for many patients undergoing high-risk surgeries or those with co-morbidities, the incidence of SSIs remains high, potentially leading to significant healthcare cost burdens relative to the capitated reimbursement related to prolonged lengths of stay in the hospital, readmissions and additional surgical and other interventions due to the infection. In addition, hospitals continue to focus on quality improvements to reduce SSIs in order to support optimal reimbursement and reduced penalties under CMS initiatives, such as the Hospital Acquired Condition Reduction Program, Hospital Readmission Reduction Program and the Hospital Value-Based Purchasing Program. Following discharge from the hospital, patients with an SSI may also rely on healthcare from other community care services, which further contributes to the overall economic burden of the infection.

D-PLEX₁₀₀ is designed to be applied directly to the surgical site during the initial surgery and is intended to prevent SSIs and improve associated mortality and morbidity, with potential broader healthcare economic benefits by reducing lengths of stay in the hospital, readmissions and additional surgical and other interventions.

For example, in our Phase 1b/2 clinical trial of D-PLEX₁₀₀ for the prevention of sternal SSIs after cardiac surgery, we observed that patients treated with D-PLEX₁₀₀ plus the standard of care had a 67% reduction in sternal wound discharge within 90 days post-surgery, as compared to the control arm. We also conducted a post-hoc analysis, which showed an 85% reduction in patients who were treated with intravenous antibiotics due to sternum wound discharge within 90 days post-surgery, as compared to the control arm.

We intend to complete potentially pivotal Phase 3 trials in the abdominal (soft tissue) and sternal (bone) surgery settings. In such trials, we plan to evaluate health economic outcomes in order to generate further evidence to potentially support approval by the FDA and EMA and, if D-PLEX₁₀₀ is

approved, broad adoption among healthcare providers and payors. We intend to further support any such data with post-marketing studies.

We are initially focused on developing D-PLEX₁₀₀ for the prevention of SSIs, where we believe there is a high unmet medical need, especially in surgeries that are at high-risk for infection or infection-related complications. Further, patients with co-morbidities, including those who are diabetic, obese, smokers, immunocompromised, aged 60 or over and those who are undergoing surgeries with a longer duration or a longer incision size, are particularly at risk for SSI-related complications, even if they are not undergoing high-risk surgeries. We believe that D-PLEX₁₀₀, if approved, also has the potential to address the needs of these patients.

SSIs are one of the most frequent complications in abdominal surgeries, and they represent a significant cause of mortality and morbidity. SSIs occur in approximately 5% to 30% of soft tissue surgeries, including approximately 10% to 15% of open abdominal surgeries, which represent the majority of the "Selected Gastrointestinal Surgeries" below, approximately 15% to 30% of colorectal surgeries and up to 4% of hysterectomies. Patients undergoing colorectal surgeries are at particularly high risk of developing SSIs because of the high risk of additional bacterial contamination originating from the operated gastrointestinal organs. Abdominal SSIs are associated with an average of 18 additional post-operative hospital days. Patients undergoing abdominal surgery and that are subjected to an SSI are at greater risk of additional complications such as hernias, which can significantly affect health outcomes and require additional corrective surgery.

The table below provides the estimated sizes of our soft tissue surgery addressable market opportunity in selected gastrointestinal surgeries and selected gynecological and urologic surgeries in the United States, the EU-5, which, for purposes of the following data, includes France, Germany, Italy, Spain and the United Kingdom, and the rest of the world, or ROW, which, for purposes of the following data, includes India, China, Brazil and Japan, based on the number of procedures performed in 2017, according to a study we commissioned from Life Science Intelligence, Inc.

In the context of cardiac surgeries, SSIs can occur in 5% to 8% of procedures but carry a mortality rate of up to 40% for deep sternal wound infections, which are more difficult to treat than superficial infections. Deep sternal wound SSIs are associated with an average of 35 post-operative hospital days, compared with a mean of 11 days for infection-free patients. The cost of care for a patient that develops a deep sternal wound SSI can be as much as three times greater than the cost of care for an infection-free patient.

In the context of orthopedic surgeries, SSIs can occur in 0.5% to 4.0% of primary hip, knee and spine surgery and in 10% to 15% of general trauma and open fracture surgery. Orthopedic SSIs are difficult to treat and associated with lifelong infection recurrence risk of 10% to 20%, including MRSA infections. Further, bone healing may also be impaired, which can result in disabling complications, including amputation. Orthopedic SSIs have been estimated to prolong total hospital stay by a median of two weeks per patient, approximately double readmission rates and increase healthcare costs by more than 300% compared to infection-free patients.

The table below provides the estimated sizes of our bone surgery addressable market opportunity in open heart surgeries and selected orthopedic surgeries, including both primary and revision knee and hip replacements, open fractures and spine fusions, in the United States, the EU-5 and ROW, based on the number of procedures performed in 2017, according to a study we commissioned from Life Science Intelligence, Inc.

We are currently conducting a potentially pivotal Phase 3 clinical trial of D-PLEX₁₀₀ for the prevention of SSIs in sternum (bone) surgeries and we also plan to initiate the first of two potentially pivotal Phase 3 trials of D-PLEX₁₀₀ for the prevention of abdominal (soft tissue) SSIs in the third quarter of 2020.

Phase 2 Clinical Trial for D-PLEX₁₀₀ in the Prevention of SSIs after Abdominal Surgery

In October 2019, we reported topline data from our Phase 2 clinical trial of D-PLEX₁₀₀ for the prevention of superficial and deep incisional SSIs after elective abdominal colon surgery involving resection. This prospective, multicenter, randomized, controlled, single-blind, two-arm clinical trial of 201 patients assessed the safety and efficacy of D-PLEX₁₀₀ with the standard of care, a prophylactic antibiotic administered intravenously prior to surgery, compared to a standard of care control arm. The primary endpoint was the combination of incisional SSIs and mortality rate as measured by the number and proportion of subjects with either an SSI event, as determined by a blinded and independent adjudication committee, or mortality for any reason within 30 days post-surgery. All subjects were followed 60 days post-surgery for the assessment of safety.

We enrolled 201 patients between the ages of 19 and 92, with a median age of 64, who underwent surgery at eight sites in Israel between October 2018 and August 2019, and 101 patients were randomly assigned to receive D-PLEX₁₀₀. Of these patients, 74% underwent surgery for cancer and 13% for treatment of Crohn's disease, and 65% of the surgeries were minimally invasive (laparoscopies) and 35% were open surgeries (laparotomies). The treatment and control arms were balanced across patient baseline characteristics such as age, sex and BMI, reason for the surgery and type of surgery performed.

Patients treated with D-PLEX₁₀₀ had a statistically significant reduction of 59% (p=0.0086) in deep or superficial incisional SSIs or mortality for any reason within 30 days of surgery, which was the primary endpoint for the trial, as compared to patients who received the standard of care as illustrated below.

In addition, in the 179 patients who completed the trial without any major protocol deviations, patients treated with D-PLEX₁₀₀ achieved a statistically significant reduction of 69% (p=0.0024) in the primary endpoint events of deep or superficial incisional SSIs or mortality for any reason within 30 days of surgery as compared to patients who received the standard of care, as illustrated below. Two patients in the control arm developed deep SSIs, as compared to no patients in the treatment arm.

Further, there was a statistically significant difference (p=0.0290) in patient deaths within 60 days of surgery, with no deaths observed in the D-PLEX₁₀₀ treatment arm as compared to five deaths observed in the standard-of-care arm.

D-PLEX₁₀₀ was observed to be generally well tolerated, with no confirmed drug-related SAEs, and did not increase wound healing impairment at the incision site as compared to the control arm. There were eight treatment emergent adverse events, or TEAEs, in eight patients treated with D-PLEX₁₀₀ that were determined by the blinded investigator to be possibly drug-related, as illustrated below, versus 18 TEAEs observed in 13 patients in the control arm. Patients in the treatment arm also had 15 post-operative wound infection AEs, as compared to 23 in the control arm.

Further, patients in both the treatment arm and the control arm had a 4% rate of wound healing impairment, suggesting that D-PLEX₁₀₀ did not increase wound healing impairment. We also evaluated patients using the ASEPSIS scale, a common method of assessing wound healing based on the need for additional treatment, the presence of serious discharge, skin redness and/or drainage, the separation of deep tissue, the isolation of bacteria and the duration of inpatient stay. Patients treated with D-PLEX₁₀₀ had lower average and cumulative ASEPSIS assessment scores than patients in the control arm.

More than 70% of the bacteria strains isolated from patients' SSIs were resistant to more than one type of commonly used antibiotics, with more than 60% considered multidrug resistant bacteria.

Patient pharmacokinetic data collected from treated patients showed evidence of D-PLEX₁₀₀-released doxycycline for approximately 30 days.

Phase 1b/2 Clinical Trial for D-PLEX₁₀₀ in the Prevention of Sternal SSIs after Cardiac Surgery

In January 2018, we reported data from our Phase 1b/2 clinical trial of D-PLEX₁₀₀ for the prevention of sternal SSIs in patients undergoing cardiac surgery through median sternotomy. This two-part trial was conducted in 81 patients at four sites in Israel, with a six-month safety follow-up period. An independent, blinded adjudication committee reviewed all patients with an SSI as identified by the principal investigator.

The first part was an open label, single arm trial of 20 patients who received D-PLEX₁₀₀ together with the standard of care, which generally consists of a systemic antibiotic given within one hour prior to surgery. Based on feedback from the FDA, the second part of the clinical trial was designed as a randomized and single-blinded trial of 61 patients, divided in a two-to-one ratio between treatment and control arms. This trial was not powered for statistical significance. One arm received D-PLEX₁₀₀ and the standard of care, and the second arm received the standard of care alone. One patient randomized to the standard-of-care arm received D-PLEX₁₀₀, and two patients randomized to the D-PLEX₁₀₀ treatment group did not receive the study drug.

None of the 58 patients treated with D-PLEX₁₀₀ and the standard of care had a sternal infection within 90 days post-surgery, which was the primary endpoint of the trial, as compared to one patient in the group treated with the standard of care alone, representing 4.3% infection rate. According to recent literature, the expected infection rate for patients receiving the standard of care alone is 5% to 8%.

In patients treated with D-PLEX₁₀₀ plus the standard of care, we observed a 67% reduction in the number of patients with sternal wound discharge within 90 days post-surgery, as compared to the control arm. We also conducted a post-hoc analysis, which showed an 85% reduction in patients who were treated with intravenous antibiotics due to sternum wound discharge within 90 days post-surgery, as compared to the control arm.

D-PLEX₁₀₀ was observed to be generally well tolerated, with no drug-related SAEs and no drug-related wound healing issues at the incision site. Patient pharmacokinetic data collected from treated patients showed evidence of D-PLEX₁₀₀-released doxycycline for approximately 30 days.

Following our end of Phase 2 meeting with the FDA in February 2020, we plan to initiate two potentially pivotal Phase 3 clinical trials of D-PLEX₁₀₀ for the prevention of SSIs after abdominal surgery. We plan to initiate the first Phase 3 trial in this indication in the third quarter of 2020. We expect to report topline results from this trial at the end of 2021 and to initiate the second Phase 3 trial approximately six months after the initiation of the first trial. Both trials are expected to be prospective, multinational, multicenter, randomized, controlled, two-arm, double-blinded trials to evaluate the efficacy and safety of D-PLEX₁₀₀ in combination with the standard of care, which includes a prophylactic antibiotic administered prior to surgery.

We expect to initiate the first trial in Israel, with additional sites in the United States and Europe, and anticipate enrolling between 616 and 900 patients, aged 18 years and older at screening, undergoing an elective colorectal surgery involving colon or rectal resection and with at least one incision measuring greater than 10 centimeters. The second Phase 3 trial is expected to enroll between 900 and 1,400 patients, aged 18 years and older at screening, undergoing an elective colorectal surgery involving colon or rectal resection, with or without a stoma, and with at least one incision measuring greater than seven centimeters, at sites in the United States, Europe and Israel. The population for both trials is similar to the population evaluated in the Phase 2 trial. Eligible patients in each trial will be randomly allocated into two blinded arms to receive either D-PLEX₁₀₀ in combination with the standard of care or the standard of care alone.

The primary endpoint of both trials is the infection rate as measured by the proportion of patients with at least one abdominal incisional infection event, as determined by a blinded and independent adjudication committee, within 30 days post-surgery. Among the secondary endpoints, we will evaluate health economic endpoints, including but not limited to the overall number of hospitalization days post-surgery, number of re-admissions due to SSIs and number of antibiotic treatment days post-surgery. We will assess safety as evaluated by adverse events, within 60 days post-surgery, as well as incisional wound healing as assessed by a blinded investigator using a visual examination and the modified Vancouver Scar Scale.

Phase 3 Clinical Trial for the Prevention of Sternal SSIs after Cardiac Surgery

In December 2019, we initiated a potentially pivotal Phase 3 clinical trial of D-PLEX₁₀₀ for the prevention of sternal SSIs after cardiac surgery, and we enrolled the first patient in February 2020. We have paused enrollment in this trial due to the COVID-19 pandemic, but we have informed investigators that they should continue monitoring current patients per the trial protocol. Pending the availability of additional funding following this offering, we expect to resume enrollment when we believe it is safe to do so and anticipate conducting an interim analysis after a total of 850 patients have been assessed for the presence of at least one sternal wound infection or mortality for any reason within 90 days post-surgery. This trial is a prospective, multinational, multicenter, randomized, two-arm, single-blinded trial to evaluate the efficacy and safety of D-PLEX₁₀₀ in combination with the standard of care, which is a prophylactic antibiotic administered prior to surgery. We plan to run an adaptive design clinical trial and expect to enroll between 1,284 and 1,600 patients, aged 18 years and older,

undergoing median sternotomy in cardiac surgery, with additional SSI-related comorbidities, such as diabetes and abnormal body mass index, at sites in the United States, Europe and Israel. Eligible patients will be randomly allocated into two arms to receive either D-PLEX₁₀₀ in combination with the standard of care or the standard of care alone.

The primary efficacy endpoint for this clinical trial is the infection rate as measured by the proportion of patients with at least one sternal wound infection event, including deep and superficial sternal wound infections, as determined by a blinded and independent adjudication committee, or mortality for any reason within 90 days post-surgery. Among the secondary endpoints we will evaluate are health economic endpoints, including but not limited to the overall number of hospitalization days post-surgery due to sternal infection, number of antibiotic treatment days post-surgery and number of surgical interventions due to SSI within 90 days post-surgery. We will also evaluate safety for six months post-surgery.

We expect to conduct an interim analysis of data from the clinical trial after a total of 850 patients have been assessed for the presence of at least one sternal wound infection or mortality for any reason within 90 days post-surgery. We have agreed on an initial Pediatric Study Plan with the FDA.

We completed a clinical trial of the safety and efficacy of D-PLEX₁₀₀₀, a predecessor product candidate to D-PLEX₁₀₀, for the prevention of infection in contaminated bone following open tibia fractures in 51 patients. Given that D-PLEX₁₀₀₀ is another product candidate from the D-PLEX family, we believe these clinical trial results may also be relevant to the clinical development profile of D-PLEX₁₀₀. At the six-month follow-up period, patients treated with D-PLEX₁₀₀₀ with the standard of care had no infections or infection-related bone morbidities, including non-union of the bone, following surgery, as compared to 11.1% of the patients treated only with the standard of care. D-PLEX₁₀₀₀ was observed to be generally well tolerated, with no drug-related AEs

We also conducted two pilot clinical trials of D-PLEX₁₀₀₀ in a total of 19 patients with infected open long bone fractures. In these trials, patients treated with D-PLEX₁₀₀₀ with the standard of care had no bone infections at the treatment site in the six months following treatment. In contrast, according to recent literature the expected infection rate for patients receiving the standard of care alone is 7% to 19%. Additionally, at the six-month follow up date, no deaths, amputations or drug-related SAEs were observed in the treatment arms.

We do not plan to pursue further independent development of D-PLEX₁₀₀₀, as we believe the prevention of SSIs in the orthopedic market can be adequately addressed by D-PLEX₁₀₀.

Our PLEX platform technology may have broad applications for other localized medical conditions other than the prevention of SSIs. We have conducted research and development for our PLEX platform in a variety of potential indications, including for the treatment of infection, cancer, inflammation and pain.

We are conducting preclinical studies of PLEX_ONC, which pairs PLEX with chemotherapy as an intratumoral therapy. In our research and development program, we have paired PLEX with monoclonal antibodies for use in immunotherapy. In preclinical rodent studies, we have observed the prolonged, predetermined release for a duration of three weeks of an antibody when paired with PLEX.

In our research and development programs, we have paired PLEX with small molecules, proteins, antibodies, peptides, nucleic acids-based drugs and growth factors. We continue to evaluate these research and development programs for potential development by us or in collaboration with leading biopharmaceutical companies.

The biopharmaceutical industry is intensely competitive and subject to rapid and significant technological change. Our potential competitors include large and experienced companies that have significant competitive advantages over us, such as greater financial, research and development, manufacturing, personnel and marketing resources, greater brand recognition, and more experience and expertise in obtaining marketing approvals from the FDA and foreign regulatory authorities. These companies may develop new drugs to treat the indications that we target or seek to have existing drugs approved for use in the indications that we target.

These potential competitors may therefore introduce competing products without our prior knowledge and without our ability to take preemptive measures in anticipation of their commercial launch. Competition may increase further as a result of advances in the commercial applicability of technologies and greater availability of capital for investment in this industry. Our competitors may succeed in developing, acquiring or licensing on an exclusive basis, products that are more effective, easier to administer or less costly than our product candidates.

The current standard of care for preventing SSIs involves the implementation of a range of treatment and prevention measures before, during and after surgery, including prophylactic antibiotic administration, antiseptic measures and wound care. We anticipate that D-PLEX₁₀₀, if approved, could be used as a complementary part of many surgical protocols, rather than competitive, in addition to the current standard of care for the prevention of SSIs. In addition, we are aware of other approved treatments that can be applied locally during surgery for the prevention of SSIs, including triclosan-coated antiseptic sutures, negative wound pressure therapy, the CleanCision wound retraction and protection system and a resorbable gentamicin-collagen sponge, which is approved in the European Union and Canada. In orthopedic surgeries, we are aware of approved treatments for localized SSI prevention that pair bone cement or bone graft substitutes premixed with an antibiotic. Further, we are aware of prior clinical development of a vaccine against Staphylococcus aureus that was halted due to lack of efficacy.

We may also face competition from companies that are developing localized extended release delivery systems, including, among others, Pacira Pharmaceuticals, Inc., Heron Therapeutics, Inc., Urogen Pharma Ltd., Flexion Therapeutics, Inc. and LIDDS AB.

Our PLEX product candidates are manufactured using a scalable self-assembly process with well-defined operations. This highly specialized and precisely controlled process enables us to manufacture product candidates consistently and efficiently for clinical and commercial applications. We have constructed a state-of-the-art, sterile manufacturing facility that is designed to be cGMP compliant for the production of our product candidates adjacent to our administrative headquarters in Petach Tikva, Israel. The manufacturing facility is cGMP certified by the IMOH and inspected by an EU-qualified person, enabling cGMP manufacturing of D-PLEX₁₀₀ for our ongoing and planned potentially pivotal Phase 3 clinical trials to be conducted in the United States and Europe.

We estimate that our facility will meet commercial demand for at least the first 30 months following a commercial launch of D-PLEX₁₀₀, if approved. We intend to use this capacity as the basis to build a fully integrated biopharmaceutical company, supported by our in-house research and development team and our anticipated commercial infrastructure. If necessary to meet further commercial demand in the future, we may expand our manufacturing capabilities or employ third-party contract manufacturing organizations.

Additionally, we rely on third parties as needed for the supply of certain raw materials necessary to manufacture our product candidates.

Given our current stage of development, we have limited internal marketing, sales and distribution capabilities. We have established a wholly-owned United States subsidiary, PolyPid Inc., a Delaware corporation with operations in New Jersey, to support our potential commercialization efforts in the United States and our clinical development program. We intend to launch D-PLEX₁₀₀ and any future product candidates in the United States using a direct salesforce targeting our primary market of hospitals where major surgeries are undertaken. We may elect to also partner in parallel in the United States in order to maximize our commercial success and launch of any approved products. We believe that the cost-effectiveness and potential clinical benefits of D-PLEX₁₀₀ will support its commercial launch under existing Medicare rates given the associated mortality, morbidity and cost burden of SSIs and the associated penalties imposed on hospital reimbursement from CMS. In addition, we believe that there may be opportunities for reimbursement of D-PLEX₁₀₀ under CMS programs. Outside the United States, we intend, where appropriate, to pursue commercialization relationships, including strategic alliances and licensing, with pharmaceutical companies and other strategic partners that are equipped to market or sell our products through their well-developed sales, marketing and distribution organizations in such countries.

In addition, we may out-license some or all of our patent rights to more than one party to achieve the fullest development, marketing and distribution of any products we develop.

Our patent estate includes patents and patent applications with claims directed to our PLEX technology platform, D-PLEX₁₀₀ product candidate and claims for potential future product candidates. As of May 31, 2020, our patent estate includes 79 issued patents, including utility and composition of matter patents, four allowed patent applications and 32 pending patent applications for our product candidates, manufacturing processes and methods of treatment.

Our patents and patent applications primarily relate to a polymer-lipid-based platform for sustained release of an active pharmaceutical agent at a target site. As of May 31, 2020, we have 34 issued patents, one patent application that has been allowed and one pending patent application in various countries worldwide related to compositions for sustained release of an API, including a lipid-saturated matrix formed from a biodegradable polymer, as well as methods for producing such compositions and methods of treatment through the use of such compositions. We also have 17 issued patents and one pending patent application in various countries worldwide related to compositions for sustained release of an API including a lipid-saturated matrix formed from a non-biodegradable polymer, as well as methods for producing such compositions and methods of treatment through the use of such compositions. We also have 12 issued patents in various countries worldwide related to compositions for sustained release of a nucleic agent including a lipid-saturated matrix formed from a biodegradable polymer, as well as methods for producing such compositions and methods of treatment through the use of such compositions. We also have an issued Australian patent and a pending Indian patent application related to compositions for sustained release of peptidic molecules, as well as methods for producing such compositions and methods of treatment through the use of such compositions. We also have 13 issued patents, one patent application that has been allowed and four pending patent applications in various countries worldwide related to methods for treating bone fractures through the use of biocompatible fillers coated with sustained release antibiotic compositions, along with one issued patent, two patent applications that have been allowed and 10 pending patent applications in various countries worldwide related to methods for treating peri-implantitis and one issued patent and several pending patent applications in various countries worldwide related to methods

for preventing and treating SSIs through similar processes. As of May 31, 2020, our patent estate includes eight issued United States patents as well as issued patents and/or pending patent applications in Australia, Brazil, Canada, China, the Eurasian Patent Organization, the European Patent Office, India, Israel, Japan, Mexico, New Zealand, the Philippines, Singapore, South Africa, South Korea, Thailand and the United States. Our issued patents are expected to remain in effect between 2029 and 2035.

In addition to patents, we have two registered trademarks. "BonyPid" which is registered with the United States Patent and Trademark Office, or the USPTO, with the European Union Intellectual Property Office and with the Israeli Patent Office, and "PolyPid" which is registered with the USPTO, with the Israeli Patent Office and with the following European Union countries: Benelux, France, Germany, Spain, Austria, Italy, the United Kingdom, Ireland and Portugal. Furthermore, we rely upon trade secrets, know-how and continuing technological innovation to develop and maintain our competitive position.

Preparing and filing patent applications is a joint endeavor of our research and development team and our in-house and external patent attorneys. Our patent attorneys conduct patent prior-art searches and then analyze the data in order to provide our research and development team with recommendations on a routine basis. This results in:

We initially submit applications to the USPTO as provisional patent applications. Then typically we continue by filing non-provisional patent applications under the Patent Cooperation Treaty, or the PCT, which is an international patent law treaty that provides a unified procedure for filing a single initial patent application to later seek patent protection for an invention in any number of the member states of the PCT. Although a PCT application does not itself issue as a patent, it acts as a placeholder allowing the applicant to seek protection in any of the member states through national-phase applications.

The FDA and comparable regulatory agencies in state and local jurisdictions and in foreign countries impose substantial requirements upon the clinical development, manufacture and marketing of pharmaceutical products. These agencies and other federal, state and local entities regulate research and development activities and the testing, manufacture, quality control, safety, effectiveness, labeling, storage, packaging, recordkeeping, tracking, approval, import, export, distribution, advertising and promotion of our products.

In the United States, the FDA regulates drugs under the FFDCA and its implementing regulations. The process of obtaining regulatory approvals and the subsequent compliance with applicable federal, state, local and foreign statutes and regulations requires the expenditure of substantial time and financial resources. Failure to comply with the applicable U.S. requirements at any time during the product development process, approval process or after approval, may subject an applicant to a variety of administrative or judicial sanctions, such as the FDA's refusal to approve pending NDAs, withdrawal of an approval, imposition of a clinical hold, issuance of warning letters, product recalls, product seizures, total or partial suspension of production or distribution, injunctions, fines, refusals of government contracts, restitution, disgorgement or civil or criminal penalties.

The process required by the FDA before product candidates may be marketed in the United States generally involves the following:

The testing and approval process requires substantial time, effort and financial resources. Preclinical studies include laboratory evaluation of drug substance chemistry, pharmacology, toxicity and drug product formulation, as well as animal studies to assess potential safety and efficacy. Prior to commencing the first clinical trial with a product candidate, we must submit the results of the preclinical tests and preclinical literature, together with manufacturing information, analytical data and any available clinical data or literature, among other things, to the FDA as part of an IND. Some preclinical studies may continue even after the IND is submitted. The IND automatically becomes effective 30 days after receipt by the FDA, unless the FDA, within the 30-day time period, raises safety concerns or questions about the conduct of the clinical trial by imposing a clinical hold. In such a case, the IND sponsor and the FDA must resolve any outstanding concerns before the clinical trial can begin. Submission of an IND may not result in FDA authorization to commence a clinical trial.

Clinical trials involve the administration of the investigational new drug to human subjects under the supervision of qualified investigators in accordance with GCP requirements. A separate submission to the existing IND must be made for each successive clinical trial conducted during product development, as well as amendments to previously submitted clinical trials. Further, an independent IRB for each study site proposing to conduct the clinical trial must review and approve the plan for any clinical trial, its informed consent form and other communications to study subjects before the clinical trial commences at that site. The IRB must continue to oversee the clinical trial while it is being conducted, including any changes to the study plans.

Regulatory authorities, an IRB or the sponsor may suspend or discontinue a clinical trial at any time on various grounds, including a finding that the subjects are being exposed to an unacceptable health risk, the clinical trial is not being conducted in accordance with the FDA's or the IRB's

requirements, if the drug has been associated with unexpected serious harm to subjects, or based on evolving business objectives or competitive climate. Some studies also include a data safety monitoring board, which receives special access to unblinded data during the clinical trial and may advise us to halt the clinical trial if it determines that there is an unacceptable safety risk for subjects or other grounds, such as no demonstration of efficacy.

In general, for purposes of NDA approval, human clinical trials are typically conducted in three sequential phases that may overlap.

The FDA may require, or companies may pursue, additional clinical trials after a product is approved. These so-called Phase 4 studies may be made a condition to be satisfied after approval. The results of Phase 4 studies can confirm the effectiveness of a product candidate and can provide important safety information.

Clinical trials must be conducted under the supervision of qualified investigators in accordance with GCP requirements, which includes the requirements that all research subjects provide their informed consent in writing for their participation in any clinical trial, and the review and approval of the study by an IRB. Investigators must also provide information to the clinical trial sponsors to allow the sponsors to make specified financial disclosures to the FDA. Clinical trials are conducted under protocols detailing, among other things, the objectives of the trial, the trial procedures, the parameters to be used in monitoring safety and the efficacy criteria to be evaluated and a statistical analysis plan. Information about some clinical trials, including a description of the trial and trial results, must be submitted within specific timeframes to the National Institutes of Health for public dissemination on their ClinicalTrials.gov website.

The manufacture of investigational drugs for the conduct of human clinical trials is subject to cGMP requirements. Investigational drugs and active pharmaceutical ingredients imported into the United States are also subject to regulation by the FDA relating to their labeling and distribution. Further, the export of investigational drug products outside of the United States is subject to regulatory requirements of the receiving country as well as U.S. export requirements under the FFDCA. Progress reports detailing the results of the clinical trials must be submitted at least annually to the FDA and the IRB and more frequently if serious adverse effects occur.

Concurrent with clinical trials, companies usually complete additional animal studies and must also develop additional information about the chemistry and physical characteristics of the product

candidate as well as finalize a process for manufacturing the product in commercial quantities in accordance with cGMP requirements. The manufacturing process must be capable of consistently producing quality batches of the product candidate and, among other things, must develop methods for testing the identity, strength, quality and purity of the final product. Additionally, appropriate packaging must be selected and tested, and stability studies must be conducted to demonstrate that the product candidate does not undergo unacceptable deterioration over its shelf life.

In seeking approval for a drug through an NDA, including a 505(b)(2) NDA, applicants are required to list with the FDA patents whose claims cover the applicant's product. Upon approval of an NDA, each of the patents listed in the application for the drug is then published in Approved Drug Products with Therapeutic Equivalence Evaluations, also known as the Orange Book.

Any applicant who files a 505(b)(2) NDA referencing a drug listed in the Orange Book must certify to the FDA (1) that no patent information on the drug product that is the subject of the application has been submitted to the FDA; (2) that such patent has expired; (3) the date on which such patent expires; or (4) that such patent is invalid or will not be infringed upon by the manufacture, use or sale of the drug product for which the application is submitted. This last certification is known as a Paragraph IV certification. Generally, the 505(b)(2) NDA cannot be approved until all listed patents have expired, except where the 505(b)(2) NDA applicant challenges a listed patent through a Paragraph IV certification.

If the applicant has provided a Paragraph IV certification to the FDA, the applicant must also send notice of the Paragraph IV certification to the holder of the NDA for the reference listed drug and the patent owner once the application has been accepted for filing by the FDA. The applicant may also elect to submit a "section viii" statement certifying that its proposed label does not contain (or carves out) any language regarding the patented method-of-use rather than certify to a listed method-of-use patent. The NDA holder or patent owner may then initiate a patent infringement lawsuit in response to the notice of the Paragraph IV certification. The filing of a patent infringement lawsuit within 45 days of the receipt of a Paragraph IV certification prevents the FDA from approving the application until the earlier of 30 months from the date of the lawsuit, expiration of the patent, settlement of the lawsuit, a decision in the infringement case that is favorable to the applicant or such shorter or longer period as may be ordered by a court. This prohibition is generally referred to as the 30-month stay. In instances where a 505(b)(2) NDA applicant files a Paragraph IV certification, the NDA holder or patent owner regularly take action to trigger the 30-month stay, recognizing that the related patent litigation may take many months or years to resolve. Thus, approval of a 505(b)(2) NDA could be delayed for a significant period of time depending on the patent certification the applicant makes and the reference drug sponsor's decision to initiate patent litigation.

The FDA provides periods of non-patent regulatory exclusivity, which provides the holder of an approved NDA limited protection from new competition in the marketplace for the innovation represented by its approved drug for a period of three or five years following the FDA's approval of the NDA. Five years of exclusivity are available to new chemical entities, or NCEs. An NCE is a drug that contains no active moiety that has been approved by the FDA in any other NDA. An active moiety is the molecule or ion, excluding those appended portions of the molecule that cause the drug to be an ester, salt, including a salt with hydrogen or coordination bonds, or other noncovalent, or not involving the sharing of electron pairs between atoms, derivatives, such as a complex (i.e., formed by the chemical interaction of two compounds), chelate (i.e., a chemical compound), or clathrate (i.e., a polymer framework that traps molecules), of the molecule, responsible for the therapeutic activity of the drug substance. During the exclusivity period, the FDA may not accept for review or approve an

Abbreviated New Drug Application, or ANDA, or a 505(b)(2) NDA submitted by another company that contains the previously approved active moiety. An ANDA or 505(b)(2) application, however, may be submitted one year before NCE exclusivity expires if a Paragraph IV certification is filed.

If a product is not eligible for the NCE exclusivity, it may be eligible for three years of exclusivity. Three-year exclusivity is available to the holder of an NDA, including a 505(b)(2) NDA, if one or more new clinical trials, other than bioavailability or bioequivalence trials, was essential to the approval of the application and was conducted or sponsored by the applicant. This three-year exclusivity period protects against FDA approval of ANDAs and 505(b)(2) NDAs for the particular condition of the new drug's approval or the change to a marketed product, such as a new formulation for a previously approved drug. Five-year and three-year exclusivity will not delay the submission or approval of a 505(b)(1) NDA; however, an applicant submitting a 505(b)(1) NDA would be required to conduct or obtain a right of reference to all of the preclinical studies and adequate and well-controlled clinical trials necessary to demonstrate safety and efficacy.

In addition, under the GAIN Act, which was enacted as part of the Food and Drug Administration Safety and Innovation Act, or FDASIA, which was signed into law in July 2012, the FDA may designate a product as a QIDP. In order to receive this designation, a drug must qualify as an antibiotic or antifungal drug for human use intended to treat serious or life-threatening infections, including those caused by either (1) an antibiotic or antifungal resistant pathogen, including novel or emerging infectious pathogens, or (2) a so-called "qualifying pathogen" found on a list of potentially dangerous, drug-resistant organisms to established and maintained by the FDA. A sponsor must request such designation before submitting a marketing application. We obtained QIDP designations for D-PLEX₁₀₀ for the prevention of post-abdominal surgery incisional infection and the prevention of post-cardiac surgery sternal infection. Upon approving a marketing application for a QIDP-designated product, the FDA will extend by an additional five years any non-patent marketing exclusivity period awarded, such as a three-year exclusivity period awarded for new clinical investigations of previously approved products. This extension is in addition to any pediatric exclusivity extension awarded, and the extension will be awarded only to a drug first approved on or after the date of enactment of the GAIN Act. The GAIN Act prohibits the grant of an exclusivity extension where the application is a supplement to an application for which an extension is in effect or has expired, is a subsequent application for a specified change to an approved product, or is an application for a product that does not meet the definition of QIDP based on the uses for which it is ultimately approved.

Section 505 of the FFDCA describes three types of marketing applications that may be submitted to the FDA to request marketing authorization for a new drug. A Section 505(b)(1) NDA is an application that contains full reports of investigations of safety and efficacy. A Section 505(b)(2) NDA is an application that contains full reports of investigations of safety and efficacy, but where at least some of the information required for approval comes from investigations that were not conducted by or for the applicant and for which the applicant has not obtained a right of reference or use from the person by or for whom the investigations were conducted. This regulatory pathway enables the applicant to rely, in part, on the FDA's prior findings of safety and efficacy for an existing product, or published literature, in support of its application. Specifically, the applicant may rely upon the FDA's prior findings of safety and efficacy for an approved product that acts as the reference listed drug for purposes of a 505(b)(2) NDA. The FDA may also require 505(b)(2) applicants to perform additional studies or measurements to support any changes from the reference listed drug. The FDA may then approve the new product candidate for all or some of the labeled indications for which the referenced product has been approved, as well as for any new indication sought by the 505(b)(2) applicant. Lastly, the FDA permits marketing applications through Section 505(j), which establishes an abbreviated approval process for a generic version of approved drug products through the submission of an ANDA.

An ANDA provides for marketing of a generic drug product that has the same active ingredients, dosage form, strength, route of administration, labeling, performance characteristics and intended use, among other things, to a previously approved product. ANDAs are termed "abbreviated" because they are generally not required to include preclinical (animal) and clinical (human) data to establish safety and efficacy. Instead, generic applicants must scientifically demonstrate that their product is bioequivalent to, or performs in the same manner as, the innovator drug through in vitro, in vivo, or other testing. The generic version must deliver the same amount of active ingredients into a subject's bloodstream in the same amount of time as the innovator drug and can often be substituted by pharmacists under prescriptions written for the reference listed drug.

The FDA has various programs, including fast track designation, breakthrough therapy designation, accelerated approval, and priority review, which are intended to expedite or simplify the process for the development and FDA review of drugs that are intended for the treatment of serious or life threatening diseases or conditions and demonstrate the potential to address unmet medical needs. The purpose of these programs is to provide important new drugs to patients earlier than under standard FDA review procedures.

Under the fast track program, the sponsor of a new drug candidate may request that FDA designate the drug candidate for a specific indication as a fast track drug concurrent with, or after, the filing of the IND for the drug candidate. To be eligible for a fast track designation, the FDA must determine, based on the request of a sponsor, that a product is intended to treat a serious or life threatening disease or condition and demonstrates the potential to address an unmet medical need, or that the drug qualifies as a QIDP under the GAIN Act. The FDA will determine that a product will fill an unmet medical need if it will provide a therapy where none exists or provide a therapy that may be potentially superior to existing therapy based on efficacy or safety factors. We obtained a Fast Track designation in November 2018 for D-PLEX₁₀₀ for the prevention of post-cardiac surgery sternal infection. Fast track designation provides additional opportunities for interaction with the FDA's review team and may allow for rolling review of NDA components before the completed application is submitted, if the sponsor provides a schedule for the submission of the sections of the NDA, the FDA agrees to accept sections of the NDA and determines that the schedule is acceptable, and the sponsor pays any required user fees upon submission of the first section of the NDA. However, the FDA's time period goal for reviewing an application does not begin until the last section of the NDA is submitted. The FDA may decide to rescind the fast track designation if it determines that the qualifying criteria no longer apply.

In addition, a sponsor can request breakthrough therapy designation for a drug if it is intended, alone or in combination with one or more other drugs, to treat a serious or life-threatening disease or condition, and preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development. Drugs designated as breakthrough therapies are eligible for intensive guidance from the FDA on an efficient drug development program, organizational commitment to the development and review of the product including involvement of senior managers, and, like fast track products, are also eligible for rolling review of the NDA. Both fast track and breakthrough therapy products are also eligible for accelerated approval and/or priority review, if relevant criteria are met.

Under the FDA's accelerated approval regulations, the FDA may approve a drug for a serious or life threatening illness that provides meaningful therapeutic benefit to patients over existing treatments based upon a surrogate endpoint that is reasonably likely to predict clinical benefit, or on a clinical endpoint that can be measured earlier than irreversible morbidity or mortality, that is reasonably likely to predict an effect on irreversible morbidity or mortality or other clinical benefit, taking into account

the severity, rarity, or prevalence of the condition and the availability or lack of alternative treatments. A drug candidate approved on this basis is subject to rigorous post marketing compliance requirements, including the completion of Phase 4 or post approval clinical trials to confirm the effect on the clinical endpoint. Failure to conduct required post approval studies, or confirm a clinical benefit during post marketing studies, will allow the FDA to withdraw the drug from the market on an expedited basis. All promotional materials for drug candidates approved under accelerated approval regulations are subject to prior review by the FDA.

Once an NDA is submitted for a product intended to treat a serious condition, the FDA may assign a priority review designation if FDA determines that the product, if approved, would provide a significant improvement in safety or effectiveness. A priority review means that the goal for the FDA to review an application is six months, rather than the standard review of ten months under current The Prescription Drug User Fee Act, or PDUFA, guidelines. Under the current PDUFA agreement, these six and ten month review periods are measured from the 60-day filing date rather than the receipt date for NDAs for new molecular entities, which typically adds approximately two months to the timeline for review from the date of submission. Most products that are eligible for fast track breakthrough therapy designation are also likely to be considered appropriate to receive a priority review.

Even if a product qualifies for one or more of these programs, the FDA may later decide that the product no longer meets the conditions for qualification or decide that the time period for FDA review or approval will not be shortened. In addition, the manufacturer of an investigational drug for a serious or life threatening disease is required to make available, such as by posting on its website, its policy on responding to requests for expanded access. Furthermore, fast track designation, breakthrough therapy designation, accelerated approval and priority review do not change the standards for approval and may not ultimately expedite the development or approval process.

Assuming successful completion of the required clinical and preclinical testing, among other items, the results of product development, including chemistry, manufacture and controls, nonclinical studies and clinical trials are submitted to the FDA, along with proposed labeling, as part of an NDA. The submission of an NDA requires payment of a substantial user fee to the FDA. These user fees must be filed at the time of the first submission of the application, even if the application is being submitted on a rolling basis. Fee waivers or reductions are available in some circumstances. One basis for a waiver of the application user fee is if the applicant employs fewer than 500 employees, including employees of affiliates, the applicant does not have an approved marketing application for a product that has been introduced or delivered for introduction into interstate commerce, and the applicant, including its affiliates, is submitting its first marketing application.

In addition, under the Pediatric Research Equity Act, an NDA or supplement to an NDA for a new active ingredient, indication, dosage form, dosage regimen or route of administration must contain data that are adequate to assess the safety and efficacy of the drug for the claimed indications in all relevant pediatric subpopulations, and to support dosing and administration for each pediatric subpopulation for which the product is safe and effective.

The FDA may, on its own initiative or at the request of the applicant, grant deferrals for submission of some or all pediatric data until after approval of the product for use in adults or full or partial waivers from the pediatric data requirements.

The FDA must refer applications for drugs that contain active ingredients, including any ester or salt of the active ingredients, that have not previously been approved by the FDA to an advisory committee or provide in an action letter a summary of the reasons for not referring it to an advisory committee. The FDA may also refer drugs which present difficult questions of safety, purity or potency to an advisory committee. An advisory committee is typically a panel that includes clinicians and other

experts who review, evaluate and make a recommendation as to whether the application should be approved and under what conditions. The FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions.

The FDA reviews applications to determine, among other things, whether a product is safe and effective for its intended use and whether the manufacturing controls are adequate to assure and preserve the product's identity, strength, quality and purity. Before approving an NDA, the FDA will inspect the facility or facilities where the product is manufactured. The FDA will not approve an application unless it determines that the manufacturing processes and facilities, including contract manufacturers and subcontracts, are in compliance with cGMP requirements and adequate to assure consistent production of the product within required specifications. Additionally, before approving an NDA, the FDA will typically inspect one or more clinical trial sites to assure compliance with GCPs.

Once the FDA receives an application, it has 60 days to review the NDA to determine if it is substantially complete to permit a substantive review, before it accepts the application for filing. Once the submission is accepted for filing, the FDA begins an in-depth review of the NDA. The FDA's NDA review times may differ based on whether the application is a standard review or priority review application. The FDA may give a priority review designation to drugs that are intended to treat serious conditions and provide significant improvements in the safety or effectiveness of the treatment, diagnosis, or prevention of serious conditions. Under the goals and policies agreed to by the FDA under PDUFA, the FDA has set the review goal of 10 months from the 60-day filing date to complete its initial review of a standard NDA for a new molecular entity, or NME, and make a decision on the application. For non-NME standard applications, the FDA has set the review goal of 10 months from the date that the FDA receives the application to complete its initial review and to make a decision on the application. For priority review applications, the FDA has set the review goal of reviewing NME NDAs within six months of the 60-day filing date and non-NME applications within six months of the date that the FDA receives the application. Such deadlines are referred to as the PDUFA date. The PDUFA date is only a goal and the FDA does not always meet its PDUFA dates. The review process and the PDUFA date may also be extended if the FDA requests or the NDA sponsor otherwise provides additional information or clarification regarding the submission.

Once the FDA's review of the application is complete, the FDA will issue either a Complete Response Letter, or CRL, or approval letter. A CRL indicates that the review cycle of the application is complete and the application is not ready for approval. A CRL generally contains a statement of specific conditions that must be met in order to secure final approval of the NDA and may require additional clinical or preclinical testing, or other information or analyses in order for the FDA to reconsider the application. The FDA has the goal of reviewing 90% of application resubmissions in either two or six months of the date that the FDA receives the application, depending on the kind of resubmission. Even with the submission of additional information, the FDA ultimately may decide that the application does not satisfy the regulatory criteria for approval. If and when those conditions have been met to the FDA's satisfaction, the FDA may issue an approval letter. An approval letter authorizes commercial marketing of the drug with specific prescribing information for specific indications.

The FDA may delay or refuse approval of an NDA if applicable regulatory criteria are not satisfied, require additional testing or information and/or require post-marketing testing and surveillance to monitor safety or efficacy of a product, or impose other conditions, including distribution restrictions or other risk management mechanisms. For example, the FDA may require a REMS as a condition of approval or following approval to mitigate any identified or suspected serious risks and ensure safe use of the drug. The FDA may prevent or limit further marketing of a product, or impose additional post-marketing requirements, based on the results of post-marketing studies or surveillance programs. After approval, some types of changes to the approved product, such as adding new indications, manufacturing changes and additional labeling claims, are subject to further testing

requirements, FDA notification and FDA review and approval. Further, should new safety information arise, additional testing, product labeling or FDA notification may be required.

If regulatory approval of a product is granted, such approval may entail limitations on the indicated uses for which such product may be marketed or may include contraindications, warnings or precautions in the product labeling, which has resulted in a Black Box warning. A Black Box warning is the strictest warning put in the labeling of prescription drugs or drug products by the FDA when there is reasonable evidence of an association of a serious hazard with the drug. The FDA also may not approve the inclusion of labeling claims necessary for successful marketing. Once approved, the FDA may withdraw the product approval if compliance with pre- and post-marketing regulatory standards is not maintained or if problems occur after the product reaches the marketplace. In addition, the FDA may require Phase 4 post-marketing studies to monitor the effect of approved products, and may limit further marketing of the product based on the results of these post-marketing studies.

Any products manufactured or distributed by us pursuant to FDA approvals are subject to continuing regulation by the FDA, including manufacturing, periodic reporting, product sampling and distribution, advertising, promotion, drug shortage reporting, compliance with any post-approval requirements imposed as a conditional of approval such as Phase 4 clinical trials, REMS and surveillance, recordkeeping and reporting requirements, including adverse experiences.

After approval, most changes to the approved product, such as adding new indications or other labeling claims are subject to prior FDA review and approval. There also are continuing, annual user fee requirements for any approved products and the establishments at which such products are manufactured, as well as new application fees for supplemental applications with clinical data. Drug manufacturers and their subcontractors are required to register their establishments with the FDA and certain state agencies and to list their drug products, and are subject to periodic announced and unannounced inspections by the FDA and these state agencies for compliance with cGMPs and other requirements, which impose procedural and documentation requirements upon us and our third-party manufacturers.

Changes to the manufacturing process are strictly regulated and often require prior FDA approval before being implemented, or FDA notification. FDA regulations also require investigation and correction of any deviations from cGMPs and specifications, and impose reporting and documentation requirements upon the sponsor and any third-party manufacturers that the sponsor may decide to use. Accordingly, manufacturers must continue to expend time, money and effort in the area of production and quality control to maintain cGMP compliance.

Later discovery of previously unknown problems with a product, including AEs of unanticipated severity or frequency, or with manufacturing processes, or failure to comply with regulatory requirements, may result in withdrawal of marketing approval, mandatory revisions to the approved labeling to add new safety information or other limitations, imposition of post-market studies or clinical trials to assess new safety risks, or imposition of distribution or other restrictions under a REMS program, among other consequences.

The FDA closely regulates the marketing and promotion of drugs. A company can make only those claims relating to safety and efficacy, purity and potency that are approved by the FDA. Physicians, in their independent professional medical judgement, may prescribe legally available products for uses that are not described in the product's labeling and that differ from those tested by us and approved by the FDA. We, however, are prohibited from marketing or promoting drugs for uses outside of the approved labeling.

In addition, the distribution of prescription pharmaceutical products, including samples, is subject to the Prescription Drug Marketing Act, or PDMA, which regulates the distribution of drugs and drug samples at the federal level, and sets minimum standards for the registration and regulation of drug distributors by the states. Both the PDMA and state laws limit the distribution of prescription pharmaceutical product samples and impose requirements to ensure accountability in distribution. The Drug Supply Chain Security Act also imposes obligations on manufacturers of pharmaceutical products related to product and tracking and tracing.

Failure to comply with any of the FDA's requirements could result in significant adverse enforcement actions. These include a variety of administrative or judicial sanctions, such as refusal to approve pending applications, license suspension or revocation, withdrawal of an approval, imposition of a clinical hold or termination of clinical trials, warning letters, untitled letters, cyber letters, modification of promotional materials or labeling, product recalls, product seizures or detentions, refusal to allow imports or exports, total or partial suspension of production or distribution, debarment, injunctions, fines, consent decrees, corporate integrity agreements, refusals of government contracts and new orders under existing contracts, exclusion from participation in federal and state healthcare programs, restitution, disgorgement or civil or criminal penalties, including fines and imprisonment. It is also possible that failure to comply with the FDA's requirements relating to the promotion of prescription drugs may lead to investigations alleging violations of federal and state healthcare fraud and abuse and other laws, as well as state consumer protection laws. Any of these sanctions could result in adverse publicity, among other adverse consequences.

Our business activities, including but not limited to, research, sales, promotion, distribution, medical education and other activities are subject to regulation by numerous regulatory and law enforcement authorities in the United States in addition to the FDA, including the Department of Justice, the Department of Health and Human Services, or HHS, and its various divisions, including CMS and the Health Resources and Services Administration, the Department of Veterans Affairs, the Department of Defense and state and local governments. Our business activities must comply with numerous healthcare laws and regulations, including those described below.

The federal Anti-Kickback Statute prohibits, among other things, any person or entity, from knowingly and willfully offering, paying, soliciting or receiving any remuneration, directly or indirectly, overtly or covertly, in cash or in kind, to induce or reward, or in return for, the referral of an individual for, or purchasing, leasing, ordering, or arranging for the purchase, lease or order of, any good, facility, item or service reimbursable under Medicare, Medicaid or other federal healthcare programs. The Anti-Kickback Statute has been interpreted to apply to arrangements between pharmaceutical manufacturers on the one hand and prescribers, purchasers, and formulary managers on the other hand. The term remuneration has been interpreted broadly to include anything of value. There are a number of statutory exceptions and regulatory safe harbors protecting some common activities from prosecution. The exceptions and safe harbors are drawn narrowly and require strict compliance in order to offer protection. Practices that involve remuneration that may be alleged to be intended to induce prescribing, purchasing or recommending may be subject to scrutiny if they do not qualify for an exception or safe harbor. Failure to meet all of the requirements of a particular applicable statutory exception or regulatory safe harbor does not make the conduct per se illegal under the federal Anti-Kickback Statute. Instead, the legality of the arrangement will be evaluated on a case-by-case basis based on a cumulative review of all of its facts and circumstances. Additionally, the Patient Protection and Affordable Care Act of 2010, as amended by the Health Care and Education Reconciliation Act of 2010, or collectively the ACA, amended the intent requirement of the federal Anti-Kickback Statute, and other healthcare criminal fraud statutes, so that a person or entity no longer needs to have actual knowledge of the federal Anti-Kickback Statute, or the specific intent to violate it, to have violated the

statute. The ACA also provided that a violation of the federal Anti-Kickback Statute is grounds for the government or a whistleblower to assert that a claim for payment of items or services resulting from such violation constitutes a false or fraudulent claim for purposes of the federal civil False Claims Act, or FCA.

The federal civil and criminal false claims laws, including the FCA, prohibit, among other things, any person or entity from knowingly presenting, or causing to be presented, a false claim for payment to, or approval by, the U.S. federal government, including the Medicare and Medicaid programs, or knowingly making, using, or causing to be made or used a false record or statement material to a false or fraudulent claim or to avoid, decrease or conceal an obligation to pay money to the federal government. As a result of a modification made by the Fraud Enforcement and Recovery Act of 2009, a claim includes "any request or demand" for money or property presented to the U.S. government. In addition, manufacturers can be held liable under the FCA even when they do not submit claims directly to government payors if they are deemed to "cause" the submission of false or fraudulent claims. The FCA also permits a private individual acting as a "whistleblower" to bring actions on behalf of the federal government alleging violations of the FCA and to share in any monetary recovery. FCA liability is potentially significant in the healthcare industry because the statute provides for treble damages and mandatory penalties. Government enforcement agencies and private whistleblowers have investigated pharmaceutical companies for or asserted liability under the FCA for a variety of alleged promotional and marketing activities, such as providing free products to customers with the expectation that the customers would bill federal programs for the products; providing consulting fees and other benefits to physicians to induce them to prescribe products; engaging in promotion for "off-label" uses; and submitting inflated best price information to the Medicaid Rebate Program.

As a condition of receiving Medicaid coverage for prescription drugs, the Medicaid Drug Rebate Program requires manufacturers to calculate and report to CMS their Average Manufacturer Price, or AMP, which is used to determine rebate payments shared between the states and the federal government and, for some multiple source drugs, Medicaid payment rates for the drug, and for drugs paid under Medicare Part B, to also calculate and report their average sales price, which is used to determine the Medicare Part B payment rate for the drug. In January 2016, CMS issued a final rule regarding the Medicaid Drug Rebate Program, or MDRP, effective April 1, 2016, that, among other things, revised the manner in which the AMP is calculated by manufacturers participating in the program and implemented certain amendments to the Medicaid rebate statute created under the ACA. In addition, the MDRP requires pharmaceutical manufacturers to enter into and have in effect a National Drug Rebate Agreement, or NDRA, with the Secretary of HHS as a condition for states to receive federal matching funds for the manufacturer's outpatient drugs furnished to Medicaid patients. On March 23, 2018, CMS finalized updates to the NDRA, or the Updated NDRA, to incorporate a number legislative and regulatory changes, including changes to align with certain provisions of the ACA.

Drugs that are approved under a biologics license application, or BLA, or an NDA, including a 505(b)(2) NDA, are subject to an additional requirement to calculate and report the manufacturer's best price for the drug and inflation penalties which can substantially increase rebate payments. For BLA and NDA drugs, the Veterans Health Care Act requires manufacturers to calculate and report to the Department of Veterans Affairs a different price called the Non-Federal AMP, offer the drugs for sale on the Federal Supply Schedule, and charge the government no more than a statutory price referred to as the Federal Ceiling Price, which includes an inflation penalty. A separate law requires manufacturers to pay rebates on these drugs when paid by the Department of Defense under its TRICARE Retail Pharmacy Program. Knowingly submitting false pricing information to the government creates potential federal False Claims Act liability.

HIPAA created additional federal criminal statutes that prohibits, among other things, knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program

or obtain, by means of false or fraudulent pretenses, representations or promises, any of the money or property owned by, or under the custody or control of, any healthcare benefit program, regardless of whether the payor is public or private, knowingly and willfully embezzling or stealing from a health care benefit program, willfully obstructing a criminal investigation of a health care offense and knowingly and willfully falsifying, concealing or covering up by any trick, scheme or device a material fact or making any materially false, fictitious or fraudulent statements in connection with the delivery of, or payment for, healthcare benefits, items or services relating to healthcare matters. Additionally, the ACA amended the intent requirement of some of these criminal statutes under HIPAA so that a person or entity no longer needs to have actual knowledge of the statute, or the specific intent to violate it, to have committed a violation.

Additionally, the federal Open Payments program pursuant to the Physician Payments Sunshine Act, created under Section 6002 of the ACA and its implementing regulations, requires some manufacturers of drugs, devices, biologicals and medical supplies for which payment is available under Medicare, Medicaid or the Children's Health Insurance Program (with specified exceptions) to report annually information related to specified payments or other transfers of value provided to physicians, as defined by such law, and teaching hospitals, or to entities or individuals at the request of, or designated on behalf of, the physicians and teaching hospitals and to report annually specified ownership and investment interests held by physicians and their immediate family members. Beginning in 2022, applicable manufacturers also will be required to report such information regarding payments and transfers of value provided, as well as ownership and investment interests held, during the previous year to physician assistants, nurse practitioners, clinical nurse specialists, certified nurse anesthetists and certified nurse midwives. Failure to submit timely, accurately and completely the required information for all payments, transfers of value and ownership or investment interests may result in civil monetary penalties.

In addition, we may be subject to data privacy and security regulation by both the federal government and the states in which we conduct our business. HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act, or HITECH, and their implementing regulations, impose requirements relating to the privacy, security and transmission of individually identifiable health information held by covered entities and their business associates. Among other things, HITECH makes HIPAA's security standards directly applicable to business associates, defined as independent contractors or agents of covered entities that create, receive, maintain or transmit protected health information in connection with providing a service for or on behalf of a covered entity. HITECH also created new tiers of civil monetary penalties, amended HIPAA to make civil and criminal penalties directly applicable to business associates, and gave state attorneys general new authority to file civil actions for damages or injunctions in federal courts to enforce the federal HIPAA laws and seek attorneys' fees and costs associated with pursuing federal civil actions.

Many states have also adopted laws similar to each of the above federal laws, which may be broader in scope and apply to items or services reimbursed by any third-party payor, including commercial insurers. We may also be subject to state laws that require pharmaceutical companies to comply with the pharmaceutical industry's voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government, and/or state laws that require drug manufacturers to report information related to payments and other transfers of value to physicians and other healthcare providers or marketing expenditures and pricing information, state and local laws that require the registration of pharmaceutical sales representatives, and state laws governing the privacy and security of health information in certain circumstances, many of which differ from each other in significant ways and may not have the same effect, thus complicating compliance efforts.

regulations or case law involving applicable fraud and abuse or other healthcare laws and regulations. If our operations were found to be in violation of any of these laws or any other governmental regulations that may apply to us, we may be subject to significant civil, criminal and administrative penalties, damages, fines, disgorgement, individual imprisonment, possible exclusion from government funded healthcare programs, contractual damages, reputational harm, diminished profits and future earnings, additional reporting obligations and oversight if we become subject to a corporate integrity agreement or other agreement to resolve allegations of non-compliance with these laws, and curtailment of our operations, any of which could substantially disrupt our operations. If the physicians or other providers or entities with whom we expect to do business are found not to be in compliance with applicable laws, they may be subject to significant criminal, civil or administrative sanctions, including exclusions from government funded healthcare programs.

Our ability to commercialize any products successfully will also depend in part on the extent to which coverage and adequate reimbursement for the procedures utilizing our product candidates, performed by health care providers, once approved, will be available from government health administration authorities, private health insurers and other organizations. Government authorities and other third-party payors, such as private health insurers and health maintenance organizations, determine which procedures, and the products utilized in such procedures, they will cover and establish reimbursement levels. Assuming coverage is obtained for procedures utilizing a given product, by a third-party payor, the resulting reimbursement payment rates may not be adequate or may require co-payments that patients find unacceptably high. Patients who undergo procedures for the treatment of their conditions, and their treating physicians, generally rely on third-party payors to reimburse all or part of the costs associated with the procedures which utilize our products. Treating physicians are unlikely to use and order our products unless coverage is provided and the reimbursement is adequate to cover all or a significant portion of the cost of the procedures which utilize our products. Therefore, coverage and adequate reimbursement for procedures which utilize new products is critical to the acceptance of such new products. Coverage decisions may depend upon clinical and economic standards that disfavor new products when more established or lower cost therapeutic alternatives are already available or subsequently become available.

By way of example, in the United States, Congress created a New Technology Add-On Payment, or NTAP, pathway for innovative therapies used to treat Medicare beneficiaries in the hospital inpatient setting, provided that such therapies meet certain criteria, including, without limitation, demonstrating a substantial clinical improvement relative to services or technologies previously available. An NTAP provides additional payment to hospitals above the standard Medicare Severity Diagnosis-Related Group, or DRG, payment amount, under the inpatient prospective payment system. When criteria are met, CMS may provide incremental reimbursement for up to 65% of the cost of therapy, in addition to the standard DRG payment. We can provide no assurances, however, that we will seek, or whether CMS would approve a NTAP, for our product candidates, if approved.

Government authorities and other third-party payors are developing increasingly sophisticated methods of cost containment, such as including price controls, restrictions on coverage and reimbursement and requirements for substitution of less expensive products and procedures. Government and other third-party payors are increasingly challenging the prices charged for health care products and procedures, examining the cost effectiveness of procedures, and the products used in such procedures, in addition to their safety and efficacy, and limiting or attempting to limit both coverage and the level of reimbursement. Further, no uniform policy requirement for coverage and reimbursement exists among third-party payors in the United States, which causes significant uncertainty related to the insurance coverage and reimbursement of newly approved products, and the procedures which may utilize such newly approved products. Therefore, coverage and reimbursement

can differ significantly from payor to payor and health care provider to health care provider. As a result, the coverage determination process is often a time-consuming and costly process that requires the provision of scientific and clinical support for the use of new products to each payor separately, with no assurance that coverage and adequate reimbursement will be applied consistently or obtained in the first instance.

There may be significant delays in obtaining coverage and reimbursement for newly approved products, and coverage may be more limited than the purposes for which the product is approved by the FDA. Moreover, eligibility for coverage and reimbursement does not imply that a product, or the procedures which utilize such product, will be paid for in all cases or at a rate which the health care providers who purchase those products will find cost effective. Additionally, we expect pricing pressures in connection with the sale of any of our product candidates due to the trend toward managed healthcare, the increasing influence of health maintenance organizations, and additional legislative changes.

We cannot be sure that coverage and reimbursement will be available for any product that we commercialize, or the procedures which utilize such product, and, if reimbursement is available, what the level of reimbursement will be. Coverage and reimbursement may impact the demand for, or the price of, any product candidate for which we obtain marketing approval. If coverage and reimbursement are not available or reimbursement is available only to limited levels, we may not successfully commercialize any product candidate for which we obtain marketing approval.

The United States and some non-U.S. jurisdictions are considering or have enacted a number of legislative and regulatory proposals designed to change the healthcare system. Among policy makers and payors in the United States and elsewhere, there is significant interest in promoting changes in healthcare systems with the stated goals of containing healthcare costs, improving quality and/or expanding access. In the United States, the pharmaceutical industry has been a particular focus of these efforts and has been significantly affected by major legislative initiatives.

For example, the pharmaceutical industry in the United States has been affected by the passage of ACA, which, among other things: imposed new fees on entities that manufacture or import certain branded prescription drugs; expanded pharmaceutical manufacturer obligations to provide discounts and rebates to certain government programs; implemented a licensure framework for follow-on biologic products; expanded health care fraud and abuse laws; revised the methodology by which rebates owed by manufacturers to the state and federal government under the Medicaid Drug Rebate Program are calculated for certain drugs and biologics, including products that are inhaled, infused, instilled, implanted or injected; imposed an additional rebate similar to an inflation penalty on new formulations of drugs; extended the Medicaid Drug Rebate Program to utilization of prescriptions of individuals enrolled in Medicaid managed care organizations; expanded the 340B program which caps the price at which manufacturers can sell covered outpatient pharmaceuticals to specified hospitals, clinics and community health centers; and provided incentives to programs that increase the federal government's comparative effectiveness research.

There remain judicial and Congressional challenges to certain aspects of the ACA, as well as efforts by the Trump administration to repeal or replace certain aspects of the ACA. Since January 2017, President Trump has signed two Executive Orders and other directives designed to delay the implementation of certain provisions of the ACA or otherwise circumvent some of the requirements for health insurance mandated by the ACA. Concurrently, Congress has considered legislation that would repeal or repeal and replace all or part of the ACA. While Congress has not passed comprehensive repeal legislation, several bills affecting the implementation of certain taxes under the ACA have been signed into law. The Tax Act includes a provision repealing, effective January 1, 2019, the tax-based

shared responsibility payment imposed by the ACA on certain individuals who fail to maintain qualifying health coverage for all or part of a year that is commonly referred to as the "individual mandate". Additionally, the 2020 federal spending package permanently eliminated, effective January 1, 2020, the ACA-mandated "Cadillac" tax on high-cost employer-sponsored health coverage and medical device tax and, effective January 1, 2021, also eliminates the health insurer tax. Further, the Bipartisan Budget Act of 2018, or the BBA, among other things, amended the ACA, effective January 1, 2019, to increase from 50 percent to 70 percent the point-of-sale discount that is owed by pharmaceutical manufacturers who participate in Medicare Part D and to close the coverage gap in most Medicare drug plans, commonly referred to as the "donut hole". On December 14, 2018, a Texas U.S. District Court Judge ruled that the ACA is unconstitutional in its entirety because the "individual mandate" was repealed by Congress as part of the Tax Act. On December 18, 2019, the U.S. Court of Appeals for the 5th Circuit upheld the District Court ruling that the individual mandate was unconstitutional and remanded the case back to the District Court to determine whether the remaining provisions of the ACA are invalid as well. On March 2, 2020, the United States Supreme Court granted the petitions for writs of certiorari to review this case, and has allotted one hour for oral arguments, which are expected to occur in the fall. It is unclear such litigation and other efforts to repeal and replace the ACA will impact the ACA.

Other legislative changes have been proposed and adopted in the United States since the ACA was enacted. In August 2011, the Budget Control Act of 2011, among other things, included aggregate reductions of Medicare payments to providers of 2.0% per fiscal year, which went into effect in April 2013, and due to subsequent legislative amendments, including the BBA, will remain in effect through 2030, unless additional U.S. Congressional action is taken. The Coronavirus Aid, Relief and Economic Security Act, or CARES Act, which was signed into law in March 2020 and is designed to provide financial support and resources to individuals and businesses affected by the COVID-19 pandemic, suspended the 2% Medicare sequester from May 1, 2020 through December 31, 2020, and extended the sequester by one year, through 2030. In addition, in January 2013, President Obama signed into law the American Taxpayer Relief Act of 2012, which, among other things, reduced Medicare payments to several categories of healthcare providers and increased the statute of limitations period for the government to recover overpayments to providers from three to five years. Additionally, the Medicare Access and CHIP Reauthorization Act of 2015, or MACRA, ended the use of the statutory formula for clinician payment and established a quality payment incentive program, also referred to as the Quality Payment Program. This program provides clinicians with two ways to participate, including through the Advanced Alternative Payment Models, or APMs, and the Merit-based Incentive Payment System, or MIPS. In November 2019, CMS issued a final rule finalizing the changes to the Quality Payment Program. At this time, it is unclear how the introduction of the Quality Payment Program will impact overall physician reimbursement under the Medicare program. Any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from private payors.

In addition, there has been particular and increasing legislative and enforcement interest in the United States with respect to drug pricing practices in recent years, particularly with respect to drugs that have been subject to relatively large price increases over relatively short time periods. Specifically, there have been several recent U.S. Congressional inquiries and proposed and enacted federal and state legislation designed to, among other things, bring more transparency to product pricing, review the relationship between pricing and manufacturer patient programs, reduce the cost of prescription drugs under Medicare and reform government program reimbursement methodologies for pharmaceutical products. The Trump administration's budget proposal for fiscal year 2021 includes a $135 billion allowance to support legislative proposals seeking to reduce drug prices, increase competition, lower out-of-pocket drug costs for patients, and increase patient access to lower-cost generic and biosimilar drugs. On March 10, 2020, the Trump administration sent "principles" for drug pricing to Congress, calling for legislation that would, among other things, cap Medicare Part D

beneficiary out-of-pocket pharmacy expenses, provide an option to cap Medicare Part D beneficiary monthly out-of-pocket expenses, and place limits on pharmaceutical price increases. Further, the Trump administration previously released a blueprint to lower drug prices and reduce out of pocket costs of drugs that contained proposals to increase drug manufacturer competition, increase the negotiating power of certain federal healthcare programs, incentivize manufacturers to lower the list price of their products, and reduce the out of pocket costs of drug products paid by consumers. HHS has solicited feedback on some of these measures and has implemented others under its existing authority For example, in May 2019, CMS issued a final rule to allow Medicare Advantage plans the option to use step therapy for Part B drugs beginning January 1, 2020. This final rule codified CMS's policy change that was effective January 1, 2019.Although a number of these and other measures may require additional authorization to become effective, Congress and the Trump administration have each indicated that it will continue to seek new legislative and/or administrative measures to control drug costs. In addition, individual states in the United States have become increasingly active in passing legislation and implementing regulations designed to control pharmaceutical product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. In the future, there will likely continue to be proposals relating to the reform of the U.S. healthcare system, some of which could further limit coverage and reimbursement of products. It is possible that additional governmental action is taken to address the COVID-19 pandemic. For example, on April 18, 2020, CMS announced that qualified health plan issuers under the ACA may suspend activities related to the collection and reporting of quality data that would have otherwise been reported between May and June 2020 given the challenges healthcare providers are facing responding to the COVID-19 virus.

The Foreign Corrupt Practices Act, or FCPA, prohibits any U.S. individual or business from paying, offering or authorizing payment or offering of anything of value, directly or indirectly, to any foreign official, political party or candidate for the purpose of influencing any act or decision of the foreign entity in order to assist the individual or business in obtaining or retaining business. The FCPA also obligates companies whose securities are listed in the United States to comply with accounting provisions requiring the companies to maintain books and records that accurately and fairly reflect all transactions of the companies, including international subsidiaries, and to devise and maintain an adequate system of internal accounting controls for international operations.

To the extent that any of our product candidates, once approved, are sold in a country outside of the United States, we will be subject to similar foreign laws and regulations, which may include, for instance, applicable post-marketing requirements, including safety surveillance, anti-fraud and abuse laws and implementation of corporate compliance programs and reporting of payments or other transfers of value to healthcare professionals.

In order to market our future products in the EEA (which is comprised of the 28 Member States of the European Union plus Norway, Iceland and Liechtenstein) and many other foreign jurisdictions, we must obtain separate regulatory approvals. More concretely, in the EEA, medicinal products can only be commercialized after obtaining a Marketing Authorization, or MA. There are two types of marketing authorizations:

Under the above described procedures, before granting the MA, the EMA or the competent authorities of the Member States of the EEA make an assessment of the risk-benefit balance of the product on the basis of scientific criteria concerning its quality, safety and efficacy.

In the EEA, new products authorized for marketing, or reference products, qualify for eight years of data exclusivity and an additional two years of market exclusivity upon marketing authorization. The data exclusivity period prevents generic or biosimilar applicants from relying on the pre-clinical and clinical trial data contained in the dossier of the reference product when applying for a generic or biosimilar marketing authorization in the European Union during a period of eight years from the date on which the reference product was first authorized in the European Union. The market exclusivity period prevents a successful generic or biosimilar applicant from commercializing its product in the European Union until 10 years have elapsed from the initial authorization of the reference product in the European Union. The 10-year market exclusivity period can be extended to a maximum of eleven years if, during the first eight years of those 10 years, the marketing authorization holder obtains an authorization for one or more new therapeutic indications which, during the scientific evaluation prior to their authorization, are held to bring a significant clinical benefit in comparison with existing therapies.

In the EEA, marketing authorization applications for new medicinal products not authorized have to include the results of studies conducted in the pediatric population, in compliance with a pediatric investigation plan, or PIP, agreed with the EMA's Pediatric Committee, or PDCO. The PIP sets out the timing and measures proposed to generate data to support a pediatric indication of the drug for which marketing authorization is being sought. The PDCO can grant a deferral of the obligation to implement some or all of the measures of the PIP until there are sufficient data to demonstrate the efficacy and safety of the product in adults. Further, the obligation to provide pediatric clinical trial data can be waived by the PDCO when these data are not needed or appropriate because the product is likely to be ineffective or unsafe in children, the disease or condition for which the product is intended occurs only in adult populations, or when the product does not represent a significant therapeutic benefit over existing treatments for pediatric patients. Once the marketing authorization is obtained in all Member States of the European Union and study results are included in the product information, even when negative, the product is eligible for six months' supplementary protection certificate extension.

As of March 31, 2020, we had 57 full-time employees and one part-time employee, all of whom were based in Israel and one full time employee who is based in the United States. Of these employees, 46 are primarily engaged in research and development activities and 13 are primarily engaged in general and administrative matters. A total of 11 employees have a Medical Doctor or Doctor of Philosophy degree. None of our employees are represented by a labor union. We have never experienced any employment-related work stoppages and believe our relationships with our employees are good.

Israeli labor laws govern the length of the workday and workweek, minimum wages for employees, procedures for hiring and dismissing employees, determination of severance pay, annual leave, sick days, advance notice of termination, payments to the National Insurance Institute, and other conditions of employment and include equal opportunity and anti-discrimination laws. While none of our employees is party to any collective bargaining agreements, certain provisions of the collective bargaining agreements between the Histadrut (General Federation of Labor in Israel) and the Coordination Bureau of Economic Organizations (including the Industrialists' Associations) are applicable to our employees in Israel by order of the Israeli Ministry of Economy and Industry. These provisions primarily concern pension fund benefits for all employees, insurance for work-related accidents, recuperation pay and travel expenses. We generally provide our employees with benefits and working conditions beyond the required minimums.

Our principal executive offices are located at 18 Hasivim Street, Petach Tikva 4959376, Israel, where we lease an approximately 33,500 square foot facility. This Israeli facility houses our administrative headquarters, research and development laboratories and state-of-the-art manufacturing facility. We also maintain an office at 47 Maple Street, Suite 302A, Summit, New Jersey, which serves as the headquarters for our U.S subsidiary.

We are subject to extensive environmental, health and safety laws and regulations in a number of jurisdictions, primarily Israel, governing, among other things: the use, storage, registration, handling, emission and disposal of chemicals, waste materials and sewage; chemicals, air, water and ground contamination; air emissions and the cleanup of contaminated sites, including any contamination that results from spills due to our failure to properly dispose of chemicals, waste materials and sewage. Our operations use chemicals and produce waste materials and sewage and require permits from various governmental authorities including, local municipal authorities, the Ministry of Environmental Protection and the Ministry of Health. The Ministry of Environmental Protection and the MOH, local authorities and the municipal water and sewage company conduct periodic inspections in order to review and ensure our compliance with the various regulations. These laws, regulations and permits could potentially require the expenditure by us of significant amounts for compliance or remediation. If we fail to comply with such laws, regulations or permits, we may be subject to fines and other civil, administrative or criminal sanctions, including the revocation of permits and licenses necessary to continue our business activities. In addition, we may be required to pay damages or civil judgments in respect of third-party claims, including those relating to personal injury (including exposure to hazardous substances we use, store, handle, transport, manufacture or dispose of), property damage or contribution claims. Some environmental, health and safety laws allow for strict, joint and several liability for remediation costs, regardless of comparative fault. We may be identified as a responsible party under such laws. Such developments could have a material adverse effect on our business, financial condition and results of operations. In addition, laws and regulations relating to environmental, health and safety matters are often subject to change. In the event of any changes or

new laws or regulations, we could be subject to new compliance measures or to penalties for activities that were previously permitted.

The following table sets forth information regarding our executive officers and directors, including their ages as of June 1, 2020:


Name	Age	Position
Executive Officers
Amir Weisberg	64	Chief Executive Officer and Director
Dikla Czaczkes Akselbrad	46	Executive Vice President and Chief Financial Officer
Noam Emanuel, Ph.D.	60	Chief Technology Officer and Chief Scientific Officer
Shaul Mukhtar, Ph.D.	64	Executive Vice President and Chief Operating Officer
Dalit Hazan	49	Vice President of Regulatory Affairs
Taunia Markvicka, Pharm.D.	51	Chief Operating Officer, PolyPid Inc.
Non-Employee Directors
Jacob Harel	64	Chairman
Yechezkel Barenholz, Ph.D.	78	Director
Nir Dror	43	Director
Chaim Hurvitz	59	Director
Itzhak Krinsky, Ph.D.	67	Director
Anat Tsour Segal	53	Director

Amir Weisberg has served as our Chief Executive Officer and a director since October 2010. From 2007 to 2010, Mr. Weisberg served as the chief executive officer of Implant Protection Ltd. He has over 20 years of entrepreneurial experience, including as chief executive officer of several startup companies in the life science sphere.

Dikla Czaczkes Akselbrad has served as our Executive Vice President and Chief Financial Officer since December 2016. Prior to that time, Ms. Czaczkes Akselbrad served as our Chief Strategy Officer from July 2014 to December 2016. She holds a B.A. in accounting and economics and an MBA in finance, both from Tel Aviv University, and is a certified public accountant in Israel.

Noam Emanuel, Ph.D. has served as our Chief Technology Officer since October 2010 and as our Chief Scientific Officer since April 2019. He previously served as a director from October 2008 to May 2020. Dr. Emanuel has over 15 years of experience in drug development, drug delivery and immunology, including with respect to local, systemic and trans-dermal drug delivery systems, as well as in imaging and diagnostics. He holds a Ph.D. in immunology and drug delivery from the Hebrew University of Jerusalem.

Shaul Mukhtar, Ph.D. has served as our Chief Operating Officer and Executive Vice President since February 2019. Dr. Mukhtar also serves as a consultant with L.S.M. consulting services, a position he has held since February 2018, and as an affiliated partner with the GlobalClose Alliances Group, a position he has held since July 2018. Dr. Mukhtar previously worked at Teva Pharmaceuticals Industries Ltd., most recently as the Senior Vice President, Chief Operating Officer and Regional Research and Development Manager for Teva Japan and South Korea from 2013 to December 2017. Dr. Mukhtar holds a Ph.D. in pharmaceutical sciences from Hebrew University of Jerusalem, and an MBA in international business administration from Tel Aviv University.

Dalit Hazan has served as our Vice President of Regulatory Affairs since March 2018. Prior to that time, Ms. Hazan was the head of Global Regulatory Affairs at Teva Pharmaceuticals Industries Ltd. From 2013 to April 2016. She holds a B.S. in biology and a M.S. in physiology and pharmacology from the Sackler Faculty of Medicine at Tel Aviv University.

Taunia Markvicka, Pharm.D. has served as Chief Operating Officer for PolyPid Inc., our U.S. subsidiary, since May 2019. Prior to that time, Dr. Markvicka served as the Chief Commercial Officer at Symbiomix Therapeutics, LLC from March 2016 to July 2018 and the Senior Vice President, Chief Commercial Officer at Pacira Pharmaceuticals, Inc. from January 2008 to January 2016. She served as a director of CorMedix from April 2014 to June 2017. She holds a B.S. in pharmacy from Creighton University, a Pharm.D. in pharmacy from the University of Nebraska and an M.B.A. from Saint Joseph's University.

Jacob Harel has served as a director since November 2017 and the chairman of our board of directors since December 2017. Mr. Harel currently serves as the Chief Executive Officer of The Harel Group, a consulting firm that provides business development support to pharmaceutical companies, which he founded in 2014. He holds a B.S. in economics from Haifa University and an M.B.A. from Tel Aviv University.

Yechezkel Barenholz, Ph.D. has served as a director since April 2008. Dr. Barenholz currently serves as head of the Laboratory of Membrane and Liposome Research at the Department of Biochemistry of the Hadassah Medical School at the Hebrew University of Jerusalem, a position he has held since 1978. He is the co-inventor of Doxil, the first nano-delivery system approved by the FDA. He holds a B.S., M.S. and Ph.D. in biochemistry from the Hebrew University of Jerusalem.

Nir Dror has served as a director since May 2020. Mr. Dror currently serves as the Chief Financial Officer of Aurum Ventures M.K.I. Ltd., a position he has held since 2013. He holds a B.A. and L.L.M. from Tel Aviv University and an M.B.A. from the University of Michigan.

Chaim Hurvitz has served as a director since February 2016. Mr. Hurvitz currently serves as Chief Executive Officer of CH Health, a private venture capital firm, a position he has held since May 2011. He served as chairman of Galmed Pharmaceuticals Ltd. from 2011 to December 2018 and a director of UroGen Pharma Ltd. from May 2013 to December 2017. He holds a B.A. in political science and economics from Tel Aviv University.

Itzhak Krinsky, Ph.D. has served as a director since January 2019. Dr. Krinsky previously worked at Teva Pharmaceuticals Industries Ltd., most recently as a Senior Executive, Special Assignments from May 2016 to February 2017 and as the Chairman of Teva Japan and South Korea and Head of Business Development, Asia Pacific from October 2012 to April 2016. Dr. Krinsky served as a director of Kamada Ltd. from November 2017 to November 2019. He holds a B.A. and M.A. in economics from Tel Aviv University and a Ph.D. in economics from McMaster University.

Anat Tsour Segal has served as a director since April 2008. Ms. Segal founded Anat Segal Consulting & Technology Investments, an independent consulting and investment banking practice advising Israeli technology and healthcare companies, in January 2000. She has served as Chief Executive Officer of Capital Nature since October 2018. From April 2003 to February 2016, she also served as the founder, chief executive officer and a director of Xenia Venture Capital. She holds a B.A. in economics and management, an M.B.A. in finance and an LL.B. from Tel Aviv University.

Our board of directors consists of seven directors, each of whom will continue to serve pursuant to their appointment until the first annual general meeting of shareholders held after this offering. We are

not a party to, and are not aware of, any voting agreements among our shareholders. In addition, there are no family relationships among our executive officers and directors.

Companies incorporated under the laws of the State of Israel whose shares are publicly traded, including companies with shares listed on The Nasdaq Global Market, are considered public companies under Israeli law and are required to comply with various corporate governance requirements under Israeli law relating to such matters as the composition and responsibilities of the audit committee and the compensation committee (subject to certain exceptions that we intend to utilize), and a requirement to have an internal auditor. This is the case even if our shares are not listed on the Tel Aviv Stock Exchange, or TASE, which our shares are not expected to be. These requirements are in addition to the corporate governance requirements imposed by the rules of The Nasdaq Global Market, or the Nasdaq Rules, and other applicable provisions of U.S. securities laws to which we will become subject (as a foreign private issuer) upon the closing of this offering and the listing of our ordinary shares on The Nasdaq Global Market. Under the Nasdaq Rules, a foreign private issuer may generally follow its home country rules of corporate governance in lieu of the comparable requirements of the Nasdaq Rules, except for certain matters including the composition and responsibilities of the audit committee.

We intend to rely on this "home country practice exemption" with respect to the following Nasdaq requirements:

Other than as stated above, we currently intend to take all actions necessary for us to maintain compliance as a foreign private issuer under the applicable corporate governance requirements of the Sarbanes-Oxley Act of 2002, the rules adopted by the SEC and The Nasdaq Global Market's listing standards. Nevertheless, we may in the future decide to use the foreign private issuer exemption with respect to some or all of the other Nasdaq corporate governance rules. Following our home country governance practices, as opposed to the requirements that would otherwise apply to a company listed on Nasdaq, may provide less protection than is accorded to investors under the Nasdaq listing requirements applicable to domestic issuers. For more information, see "Risk Factors—As a foreign private issuer, we are permitted, and intend, to follow certain home country corporate governance practices instead of otherwise applicable Nasdaq requirements, and we will not be subject to certain U.S. securities laws including, but not limited to, U.S. proxy rules and the filing of certain Exchange Act reports."

Under the Israeli Companies Law, our board of directors is responsible for setting our general policies and supervising the performance of management. Our board of directors may exercise all powers and may take all actions that are not specifically granted to our shareholders or to management. Our executive officers are responsible for our day-to-day management and have individual responsibilities established by our board of directors. Our Chief Executive Officer is appointed by, and serves at the discretion of, our board of directors, subject to the terms of the employment agreement that we have entered into with him. All other executive officers are also appointed by our board of directors, and are subject to the terms of any applicable employment agreements that we may enter into with them.

Under our amended and restated articles of association, to be effective upon the closing of this offering, our board of directors must consist of at least five directors and not more than eleven directors. Our board of directors will consist of directors upon the closing of this offering. Other than vacancies to be filled through selection by the remaining members of our board, the Israeli Companies Law and our amended and restated articles of association provide that directors are elected at the annual general meeting of our shareholders by a vote of the majority of the total voting power of our company voting in person, by proxy or by other voting instrument at that meeting. We have only one class of directors.

Under the Israeli Companies Law, our board of directors is required to employ independent judgment and discretion when voting, and is prohibited from entering into any voting arrangements with respect to actions taken at meetings of the board. Further, the Israeli Companies Law provides that in the event a director learns about an alleged breach of law or improper conduct of business

relating to a company matter, said director must promptly take action to summon a meeting of the board of directors to address any such breach.

Notwithstanding the exemptions available to foreign private issuers under Nasdaq Rules, we intend to follow the requirements of the Nasdaq Rules with regard to the process of nominating directors by means of our compensation, nominating and corporate governance committee, which is comprised of directors who our board has deemed to be independent under Nasdaq Rules.

In addition, our amended and restated articles of association allows our board of directors to appoint directors to fill vacancies on our board of directors, including filling empty board seats up to the maximum number of directors permitted under our articles of association, for a term of office equal to the remaining period of the term of office of each director whose office has been vacated. Vacancies on our board of directors may be filled by a vote of a simple majority of the directors then in office. A director so appointed will hold office until the next annual general meeting of our shareholders in which the other directors then in office are proposed to be replaced or reappointed.

Directors may be removed from office by a resolution at a general meeting of shareholders adopted by a vote of 65% of the total voting power of our company in accordance with the Israeli Companies Law and our amended and restated articles of association.

Under the Israeli Companies Law, and except as described below, we would be required to include on our board of directors at least two members, each of whom qualifies as an external director, and as to whom special qualifications and other provisions would be applicable. We would also be required to include one such external director on each of our board committees.

Under regulations promulgated under the Israeli Companies Law, Israeli companies whose shares are traded on stock exchanges such as The Nasdaq Global Market that do not have a controlling shareholder (as defined therein) and which comply with the requirements of the jurisdiction where the company's shares are traded with respect to the appointment of independent directors and the composition of an audit committee and compensation committee, may elect not to follow the Israeli Companies Law requirements with respect to the composition of its audit committee and compensation committee and the appointment of external directors. As we do not have a controlling shareholder, we intend to comply with the requirements of the Nasdaq Stock Market with respect to the composition of our board and such committees, and therefore we will be exempt from the Israeli Companies Law requirements with respect thereto, including the appointment of external directors.

Although not required of foreign private issuers under Nasdaq Rules, we intend to comply with the requirements thereunder applicable to domestic listed companies that a majority of the board of directors be deemed to be independent under such rules, as well as the independence requirements that would be applicable to our audit committee and compensation, nominating and corporate governance committee if we were a domestic listed company, as described below. In light of this obligation, our board of directors has undertaken a review of the independence of our directors under current rules and regulations of the SEC and Nasdaq Rules and considered whether any of our directors has a material relationship with us that could compromise his or her ability to exercise independent judgment in carrying out his or her responsibilities. Based upon information requested from and provided by each director concerning such director's background, employment and affiliations, including family relationships, our board of directors determined that , representing of our directors, are "independent directors" as defined under current rules and regulations of the SEC and Nasdaq Rules. In making these determinations, our board of directors considered the current and prior relationships that each non-employee director has with our company and all other facts and circumstances that our board of directors deemed relevant in determining their independence, including the beneficial ownership of our share capital by each non-employee director

and the transactions involving them described in "Certain Relationships and Related Party Transactions."

In accordance with the Israeli Companies Law and our amended and restated articles of association, our board of directors is required to appoint one of its members to serve as chairman of the board of directors. Our board of directors has appointed Jacob Harel to serve as chairman of the board of directors.

Under the Israeli Companies Law and our amended and restated articles of association, our board of directors is permitted to form committees, and to delegate to any such committee powers allotted to the board of directors, subject to certain exceptions. In general, the board of directors may overturn a resolution adopted by a committee it has formed; provided, however, that the board's decision shall not affect the ability of third parties, who were not aware of such decision, to rely on the committee's resolution prior to the time it is overturned. Only members of the board of directors can be members of a board committee, unless the committee is solely advisory.

Following the listing of our ordinary shares on The Nasdaq Global Market, our audit committee will consist of .

Under the Israeli Companies Law, we will be required to appoint an audit committee following the closing of this offering.

Under the Nasdaq Rules, we are required to maintain an audit committee consisting of at least three independent directors, each of whom is financially literate and one of whom has accounting or related financial management expertise. We are permitted to phase-in our compliance with the independent audit committee requirements set forth in the Nasdaq Rules and the SEC rules, as follows: (1) we must have one independent member at the time of listing, (2) we must have a majority of independent members within 90 days of listing and (3) we must have all independent members within one year of listing. We expect that, within 90 days of our listing on The Nasdaq Global Market, a third independent director for audit committee purposes (as determined under the Nasdaq Rules and the SEC rules) will have been added to our audit committee.

All members of our audit committee meet the requirements for financial literacy under the applicable rules and regulations of the SEC and The Nasdaq Global Market. Our board of directors has determined that is an audit committee financial expert as such term is defined by the SEC rules and has the requisite financial experience as defined by the Nasdaq Rules. Each of the members of our audit committee is "independent" as such term is defined in Rule 10A-3(b)(1) under the Exchange Act and satisfies the independent director requirements under the Nasdaq Rules.

Our audit committee charter, to be effective upon the listing of our shares on The Nasdaq Global Market, sets forth the responsibilities of the audit committee consistent with the rules and regulations

of the SEC and the Nasdaq Rules, as well as the requirements for such committee under the Israeli Companies Law, including the following:

Our audit committee provides assistance to our board of directors in fulfilling its legal and fiduciary obligations in matters involving our accounting, auditing, financial reporting, internal control and legal compliance functions by pre-approving the services performed by our independent accountants and reviewing their reports regarding our accounting practices and systems of internal control over financial reporting. Our audit committee also oversees the audit efforts of our independent accountants and takes those actions that it deems necessary to satisfy itself that the auditors are independent of management.

Under the Israeli Companies Law, our audit committee is responsible, among other things, for:

Compensation, Nominating and Corporate Governance Committee and Compensation Policy

Upon the listing of our ordinary shares on The Nasdaq Global Market, we intend to establish a compensation, nominating and corporate governance committee. The composition of our compensation, nominating and corporate governance committee meets the requirements for and guidance under the Nasdaq Rules and current SEC rules and regulations applicable to domestic issuers. The members of this committee will be , each of whom is independent in accordance with the Nasdaq rules.

Under the Israeli Companies Law, the board of directors of a public company must appoint a compensation committee.

The duties of the compensation committee under the Israeli Companies Law, include the recommendation to the company's board of directors of a policy regarding the terms of engagement of office holders, to which we refer as a compensation policy. That policy must be adopted by the company's board of directors, after considering the recommendations of the compensation, nominating and corporate governance committee, and will need to be approved by the company's shareholders, which approval requires what we refer to as a Special Majority Approval for Compensation. A Special Majority Approval for Compensation requires shareholder approval by a majority vote of the shares present and voting at a meeting of shareholders called for such purpose, provided that either: (i) such majority includes at least a majority of the shares held by all shareholders who are not controlling shareholders and do not have a personal interest in such compensation arrangement, excluding abstentions; or (ii) the total number of shares of non-controlling shareholders and shareholders who do not have a personal interest in the compensation arrangement and who vote against the arrangement does not exceed 2% of the company's aggregate voting rights. Our board of directors intends to adopt, and we will ask our shareholders to approve, a compensation policy to be effective in connection with, and upon the consummation of, this offering, which policy would be in effect until the fifth anniversary of this offering.

The compensation policy must (subject to certain exemptions) set the framework and limitation for decisions concerning the financial terms of employment or engagement of office holders, including exculpation, insurance, indemnification or any monetary payment or obligation of payment in respect of employment or engagement. The compensation policy must relate to certain factors, including advancement of the company's long-term objectives, business plan and policies, and creation of appropriate incentives for office holders. It must also consider, among other things, the company's risk management, size and the nature of its operations. The compensation policy must furthermore consider the following additional factors:

The compensation, nominating and corporate governance committee is responsible for (i) recommending the compensation policy to our board of directors for its approval (and subsequent approval by our shareholders) and (ii) duties related to the compensation policy and to the compensation of our office holders, including:


Copies to:
Divakar Gupta Daniel I. Goldberg Joshua A. Kaufman Madison A. Jones Cooley LLP 55 Hudson Yards New York, NY 10001 Telephone: (212) 479-6000 Facsimile: (212) 479-6275	Oded Har-Even David Huberman Reut Alfiah Sullivan & Worcester Israel (Har-Even & Co.) 41-45 Rothschild Blvd. Beit Zion Tel Aviv, Israel 6578401 Telephone: +972 (3) 795-5555 Facsimile: +972 (3) 795-5550	Nathan Ajiashvili Joshua G. Kiernan Latham & Watkins LLP 885 Third Avenue New York, NY 10022 Telephone: (212) 906-1200 Facsimile: (212) 751-4864	Barry P. Levenfeld Adrian Daniels Yigal Arnon & Co. 1 Azrieli Center Tel Aviv, Israel 67021 Telephone: +972 (3) 608-7777 Facsimile: +972 (2) 623-9236

Title of Each Class of Securities To Be Registered	Proposed Maximum Aggregate Offering Price⁽¹⁾	Amount of Registration Fee⁽²⁾




Ordinary Shares, par value NIS 0.80 per share	$57,500,000	$7,463.50

	Per Ordinary Share	Total

Price to public	$	$
Underwriting discounts and commissions⁽¹⁾	$	$
Proceeds to us (before expenses)	$	$


PROSPECTUS SUMMARY			1
RISK FACTORS			12
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS			67
USE OF PROCEEDS			69
DIVIDEND POLICY			70
CAPITALIZATION			71
DILUTION			73
SELECTED FINANCIAL DATA			76
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS			77
BUSINESS			92
MANAGEMENT			130
PRINCIPAL SHAREHOLDERS			148
CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS			151
DESCRIPTION OF SHARE CAPITAL			153
SHARES ELIGIBLE FOR FUTURE SALE			161
TAXATION			164
UNDERWRITING			172
EXPENSES OF THIS OFFERING			181
LEGAL MATTERS			182
EXPERTS			182
ENFORCEMENT OF CIVIL LIABILITIES			182
WHERE YOU CAN FIND MORE INFORMATION			183
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS			F-1


Assumed initial public offering price per ordinary share				$
Historical net tangible book value per ordinary share as of December 31, 2019	$	31.74
Decrease in net tangible book value per ordinary share due to conversion of preferred shares and exercise of warrants to purchase shares of Series A preferred shares		(29.49	)
Pro forma net tangible book value per ordinary share as of December 31, 2019		2.25
Increase in pro forma net tangible book value per ordinary share attributable to new investors

Pro forma as adjusted net tangible book value per ordinary share after this offering

Dilution per ordinary share to new investors participating in this offering				$


State of Israel (State or other jurisdiction of incorporation or organization)		2834 (Primary Standard Industrial Classification Code Number)		Not Applicable (I.R.S. Employer Identification Number)

	Shares Subscribed for/Purchased				Total Consideration

	Shares Subscribed for/Purchased				Total Consideration				Average Price per Share
(in thousands, except share and per share amounts and percentages)	Number	Percent			Amount	Percent			Average Price per Share
Existing shareholders				%	$			%	$
Investors participating in this offering

Total			100	%	$		100	%

	Less than 1 Year		1 to 3 Years		4 to 5 Years		More than 5 Years		Total

	(in thousands)
Operating lease obligations⁽¹⁾	$	1,103	$	2,864	$	530	$	396	$	4,893

	Year Ended December 31,

	2018	2019
Expected term (in years)	6–7	6–7
Expected volatility	91.44%–96.87%	69.8%–76.14%
Risk-free rate	3.43%–3.90%%	2.26%–3.13%
Dividend yield	0.0%	0.0%

		Number of Surgeries (2017)

Selected Gastrointestinal Surgeries
United States			7,984,000
EU-5			7,816,000
ROW			4,789,800
Selected Gynecological and Urologic Surgeries
United States			1,096,000
EU-5			720,000
ROW			827,200
Total			23,233,000

		Number of Surgeries (2017)

Open Heart Surgeries
United States			347,000
EU-5			362,000
ROW			441,000
Selected Orthopedic Surgeries
United States			4,516,000
EU-5			2,783,000
ROW			3,922,000
Total			12,371,000



Total Number of Possibly-Related TEAEs	8		18
Number of Patients with at Least One Possibly-Related TEAE	8 (8.0	)%	13 (13.1	)%

General disorders and administration site conditions	4 (4.0	)%	3 (3.0	)%
Infections and infestations	2 (2.0	)%	10 (10.0	)%
Injury, poisoning and procedural complications	1 (1.0	)%	0 (0.0	)%
Nervous system disorders	0 (0.0	)%	1 (1.0	)%
Skin and subcutaneous tissue disorders	0 (0.0	)%	2 (2.0	)%
Surgical and medical procedures	1 (1.0	)%	0 (0.0	)%
Vascular disorders	0 (0.0	)%	1 (1.0	)%


Barclays		BMO Capital Markets


National Securities Corporation		A.G.P.