Note C - Debt Obligations

3 Months Ended

Mar. 31, 2022

Notes to Financial Statements

Debt Disclosure [Text Block]

C. Debt Obligations

As of March 31, 2022, and December 31, 2021, the Company had no convertible notes outstanding.

Deerfield Facility Agreement

In   June 2014, the Company entered into a $60 million multi-tranche credit facility (the “Deerfield Facility Agreement”) with Deerfield Private Design Fund III, LP (“Deerfield”). At the time the Company entered into the Deerfield Facility Agreement, the Company borrowed the first tranche, which consisted of a term loan of $15 million (the “Term Note”) and a senior secured loan of $10 million (the “Deerfield Convertible Note”). Deerfield was able to convert any portion of the outstanding principal and any accrued but unpaid interest on the Deerfield Convertible Note into shares of the Company’s common stock at an initial conversion price of $5.85 per share (the “Deerfield Note Put Option”). After giving effect to the Reverse Stock Split effected in  December 2020, the conversion price became $93.60.

The Deerfield Convertible Note originally bore interest at 9.75% per annum but was subsequently reduced to 6.75%. Interest accrued on the outstanding balance under the Deerfield Convertible Note was due quarterly in arrears. The Company originally had to repay one-third of the outstanding principal amount of the Deerfield Convertible Note on the fourth and fifth anniversaries of the Deerfield Facility Agreement (  June 2018 and  June 2019). In  June 2018, Deerfield agreed to convert approximately $3.3 million of the principal amount then due, plus approximately $0.2 million of accrued interest, into 37,410 shares of our common stock (as discussed below in the section entitled “Facility Agreement Waiver and Fifth Amendment to Senior Secured Convertible Note”). In  September 2019, the Company entered into an amendment with Deerfield in order to (i) reduce the interest rate applicable under the Deerfield Facility Agreement from 9.75% to 6.75%, (ii) provide for “payment in kind” of interest on the Loans (as defined in the Deerfield Facility Agreement), and (iii) defer the Loan payments due pursuant to the Deerfield Facility Agreement until  June 1, 2020 (as discussed below in the section entitled “2021 Note Exchange Effected in  September 2019”). In  December 2019, the Company entered into another amendment with Deerfield in order to (i) defer the Loan payments due pursuant to the Deerfield Facility Agreement until  March 31, 2021, and (ii) allow for the entries of additional debt and debt holders under the Deerfield Facility Agreement (as discussed below in the section entitled “2021 Note Exchange Effected in  December 2019”). The Company was also obligated to repay principal of the Deerfield Convertible Note in the amount of approximately $7.0 million plus any capitalized interest to date on  March 31, 2021. Prepayment of the outstanding balance was not allowed without written consent of Deerfield.

Pursuant to the Deerfield Facility Agreement, the Company issued to Deerfield a warrant to purchase 14,423,076 shares of Series D Preferred at an initial exercise price of $0.78 per share, which is exercisable until   June 2, 2024 (the “Deerfield Warrant”). Upon completion of the Company’s initial public offering, the Deerfield Warrant automatically converted into a warrant to purchase 1,923,077 shares of the Company’s common stock at an exercise price of $5.85 per share. After giving effect to the Reverse Stock Split effected in  December 2020, the shares issuable upon conversion of the warrant became 120,192 shares of common stock, and the exercise price of the Deerfield Warrant became $93.60 per share, which in  January 2021 and  June 2021 was further adjusted to $46.25 and $38.34 per share, respectively, in connection with the Company entering into the  January 2021 and  June 2021 Inducement Transactions (as defined in Note F) each of which triggered the anti-dilution provisions of the Deerfield Warrant. This warrant qualifies as a participating security under ASC Topic 260, Earnings per Share, and is treated as such in the net loss per share calculation (Note I). If a Major Transaction occurs (as defined in the Deerfield Facility Agreement) Deerfield   may require the Company to redeem the Deerfield Warrant for a cash amount equal to the Black-Scholes value of the portion of the Deerfield Warrant to be redeemed (the “Warrant Put Option”).

The Company recorded the fair value of the shares of Series D Preferred to debt issuance costs on the date of issuance. The Company also recorded the fair value of the Deerfield Warrant and the embedded Warrant Put Option to debt discount on the date of issuance. The debt issuance costs and debt discount were amortized over the term of the related debt and the expense was recorded as interest expense related to amortization of debt issuance costs and discount in the statements of operations. In the first quarter of 2021, the debt was extinguished, through a series of debt payments and a conversion of debt principal and interest to Series B-2 Preferred Stock. As a result of the debt extinguishment, the associated discount and debt issuance costs were written off and recorded as a loss on extinguishment.

Pursuant to the Deerfield Facility Agreement, the Company was not able to enter into specified transactions, including a debt financing in the aggregate value of $750,000 or more, other than permitted indebtedness under the Deerfield Facility Agreement, a merger, an asset sale or any other change of control transaction or any joint venture, partnership or other profit-sharing arrangement, without the prior approval of the Required Lenders (as defined in the Deerfield Facility Agreement). Additionally, if the Company were to enter into a major transaction, including a merger, consolidation, sale of substantially all of its assets or other change of control transaction, Deerfield would have had the ability to demand that prior to consummation of such transaction the Company repay all outstanding principal and accrued interest of any notes issued under the Deerfield Facility Agreement. Under each warrant issued pursuant to the Deerfield Facility Agreement, Deerfield has the right to demand that the Company redeem the warrant for a cash amount equal to the Black-Scholes value of a portion of the warrant upon the occurrence of specified events, including a merger, an asset sale or any other change of control transaction.

Issuance of 5.50% Senior Convertible Notes and Third Amendment to Senior Secured Convertible Note and Warrant

In   February 2016, the Company issued $86.3 million aggregate principal amount of its 5.50% Senior Convertible Notes due 2021 (the “2021 Notes”) to Cowen and RBC Capital Markets, LLC, as representatives of the several initial purchasers (the “Initial Purchasers”), who subsequently resold the 2021 Notes to qualified institutional buyers (the “Note Offering”) in reliance on the exemption from registration provided by Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”).

The 2021 Notes were issued pursuant to an indenture, dated as of   February 9, 2016 (the “Indenture”), between the Company and U.S. Bank National Association, as trustee (the “Trustee”). Interest on the 2021 Notes was payable semi-annually in cash in arrears on   February 1 and  August 1 of each year, beginning on  August 1, 2016, at a rate of 5.50% per year. The 2021 Notes had an original maturity of   February 1, 2021 unless earlier converted or repurchased.

The net proceeds from the Note Offering were approximately $82.8 million, after deducting the Initial Purchasers’ discount and estimated offering expenses. Concurrent with the Note Offering, the Company used approximately $18.6 million of the net proceeds from the Note Offering to repay in full the Term Note, plus all accrued but unpaid interest, a make-whole interest payment and a prepayment premium on the Term Note.

The 2021 Notes were not redeemable prior to the maturity date, and no sinking fund was provided for the 2021 Notes. The 2021 Notes were convertible at an initial conversion rate of 58.4454 shares of the Company’s common stock per $1,000 principal amount of the 2021 Notes, subject to adjustment under the Indenture, which is equal to an initial conversion price of approximately $17.11 per share of common stock. After giving effect to the Reverse Stock Split effected in  December 2020, the conversion rate of the 2021 Notes would have been approximately 3.6528 shares of the Company’s common stock per $1,000 principal amount of the 2021 Notes, which is equal to a conversion price of approximately $273.76 per share.

If the Company underwent a “fundamental change” (as defined in the Indenture), holders could have required that the Company repurchase for cash all or any portion of their 2021 Notes at a fundamental change repurchase price equal to 100% of the principal amount of the 2021 Notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date.

The Indenture included customary terms and covenants, including certain events of default after which the 2021 Notes  may have become due and payable immediately.

As described in more detail below, in multiple exchanges occurring in  December 2019 and  January 2020, all outstanding 2021 Notes were exchanged by the holders thereof for either shares of our common stock or senior secured convertible promissory notes issued under the terms of the Deerfield Facility Agreement.

2021 Note Exchange Effected in December 2019

In  December 2019, the Company entered into the   December 2019 Exchange Agreement and Amendment to Facility Agreement, Senior Secured Convertible Notes and Warrants (the  “December 2019 Exchange Agreement”) with the Deerfield Lenders and Delaware Street Capital Master Fund, L.P. (“DSC” and, collectively with the Deerfield Lenders, the  “December 2019 Holders”). Under the  December 2019 Exchange Agreement, the Company issued senior secured convertible promissory notes under the Deerfield Facility Agreement in the aggregate principal amount of  approximately $71.4 million (the  “December 2019 Notes”), in exchange for the cancellation of an aggregate of approximately $71.4 million principal amount and accrued interest of the Company’s 2021 Notes. Upon entering into the  December 2019 Exchange Agreement, the Company agreed to pay the  December 2019 Holders, in the aggregate, an interest payment of approximately $0.7 million which represents 50% of the accrued interest, as of  December 18, 2019, on the 2021 Notes owned by the  December 2019 Holders. The remainder of such interest was included in the principal amount of the  December 2019 Notes.

The  December 2019 Notes bore interest at 6.75% per annum. The  December 2019 Notes were convertible into shares of the Company’s common stock at an initial conversion price of $17.11 per share (which represented the conversion price of the 2021 Notes), subject to adjustment in accordance with the terms of the  December 2019 Notes. After giving effect to the Reverse Stock Split effected in  December 2020, the conversion price of the  December 2019 Notes would have been $273.76 per share. The Company subsequently amended the  December 2019 Notes to provide that such notes would have been convertible into shares of the Company’s common stock at a conversion price of $93.60 per share (which represented the conversion price of the Deerfield Convertible Note). The conversion price of the  December 2019 Notes would have been adjusted downward if the Company issued or sold any shares of common stock, convertible securities, warrants or options at a sale or exercise price per share less than the greater of the  December 2019 Notes’ conversion price or the closing sale price of the Company’s common stock on the last trading date immediately prior to such issuance, or, in the case of a firm commitment underwritten offering, on the date of execution of the underwriting agreement between the Company and the underwriters for such offering. However, if the Company effected an “at the market offering” as defined in Rule 415 of the Securities Act, of its common stock, the conversion price of the  December 2019 Notes would have been adjusted downward pursuant to this anti-dilution adjustment only if such sales were made at a price less than $93.60 per share, provided that this anti-dilution adjustment would not have applied to any sales made under (x) the 2020 ELOC Agreement, (y) the ATM Agreement, or (z) the  September 2019 Exchange Agreement (as amended). Notwithstanding anything to the contrary in the  December 2019 Notes, the anti-dilution adjustment of such notes would not have resulted in the conversion price of the  December 2019 Notes being less than $9.328 per share. The  December 2019 Notes were convertible at any time at the option of the holders thereof, provided that a holder of a  December 2019 Note was prohibited from converting such note into shares of the Company’s common stock if, as a result of such conversion, such holder (together with certain affiliates and “group” members) would have beneficially owned more than 4.985% of the total number of shares of common stock then issued and outstanding. However, the  December 2019 Note issued to DSC, due to the fact DSC was a beneficial owner of more than 4.985% of the total number of shares of the Company’s common stock then issued and outstanding, had a beneficial ownership cap equal to 19.985% of the total number of shares of the Company’s common stock then issued and outstanding. Pursuant to the  December 2019 Notes, the  December 2019 Holders had the option to demand repayment of all outstanding principal, and any unpaid interest accrued thereon, in connection with a Major Transaction (as defined in the  December 2019 Notes), which included, among others, any acquisition or other change of control of the Company; a liquidation, bankruptcy or other dissolution of the Company; or if at any time after  March 31, 2021, shares of the Company’s common stock are not listed on an Eligible Market (as defined in the  December 2019 Notes). The  December 2019 Notes were subject to specified events of default, the occurrence of which would have entitled the  December 2019 Holders to immediately demand repayment of all outstanding principal and accrued interest on the  December 2019 Notes. Such events of default included, among others, failure to make any payment under the  December 2019 Notes when due, failure to observe or perform any covenant under the Deerfield Facility Agreement (as defined below) or the other transaction documents related thereto (subject to a standard cure period), the failure of the Company to be able to pay debts as they come due, the commencement of bankruptcy or insolvency proceedings against the Company, a material judgement levied against the Company and a material default by the Company under the Deerfield Warrant, the  December 2019 Notes or the Deerfield Convertible Note.

The  December 2019 Exchange Agreement amended the Deerfield Facility Agreement in order to, among other things, (i) provide for the Deerfield Facility Agreement to govern the  December 2019 Notes received by the  December 2019 Holders pursuant to the  December 2019 Exchange Agreement, (ii) extend the maturity of the Deerfield Convertible Note from  February 14, 2020 and  June 1, 2020, as applicable, to  March 31, 2021, (iii) defer interest payments on the Deerfield Convertible Note until  March 31, 2021 (which such interest shall accrue as “payment-in-kind” interest), (iv) designate DSC as a Lender under (and as defined in the Deerfield Facility Agreement), (v) name Deerfield as the “Collateral Agent” for all Lenders and (vi) modify the terms and conditions under which the Company  may issue additional pari passu and subordinated indebtedness under the Deerfield Facility Agreement (subject to certain conditions specified in the Deerfield Facility Agreement).

The  December 2019 Exchange Agreement also amended and restated the Deerfield Convertible Note to conform the definitions of “Eligible Market” and “Major Transactions” to the definition in the  December 2019 Notes, to remove provisions that were only applicable prior to the Company’s initial public offering and to make certain other changes to conform to the  December 2019 Notes. The conversion price for the Deerfield Convertible Note remained $93.60 per share, subject to adjustment on the same basis as the  December 2019 Notes.

The  December 2019 Exchange Agreement also amended the Deerfield Warrant to conform the definitions of “Eligible Market” and “Major Transaction” in the Deerfield Warrant with the definitions of such terms in the  December 2019 Notes.

The  December 2019 Exchange Agreement contained customary representations, warranties and covenants made by the Company and the  December 2019 Holders, including a covenant of the Company to, upon request, use commercially reasonable efforts to use its technology to discover a product based upon a compound that  may be identified by the Deerfield Lenders in a manner that is reasonably acceptable to the Deerfield Lenders, or one of their affiliates, with the terms of such discovery plan, including the Company’s compensation thereunder, to be mutually agreed to by the parties.

In connection with entering into the  December 2019 Exchange Agreement, on  December 18, 2019, the Company amended and restated that certain Guaranty and Security Agreement, dated  June 2, 2014, by and between the Company and the other parties thereto (the “GSA”) to, among other things, (i) provide that all of the notes will be secured by the liens securing the indebtedness under the Deerfield Facility Agreement, and (ii) name Deerfield as the “Collateral Agent” under the GSA.

In connection with entering into the  December 2019 Exchange Agreement, the Company also entered into an amendment (the  “September 2019 Exchange Agreement Amendment”) to the  September 2019 Exchange Agreement to, among other things, (i) amend and restate Annex I of the  September 2019 Exchange Agreement to allow the Deerfield Lenders to effect optional exchanges of the  December 2019 Notes and the Deerfield Convertible Note under the terms of the  September 2019 Exchange Agreement; (ii) amend the common stock exchange price under the  September 2019 Exchange Agreement to be a per share price equal to the greater of (x) $0.60, subject to adjustment to reflect stock splits and similar events, or (y) the average of the volume-weighted average prices of the Company’s common stock on each of the 15 trading days immediately preceding such exchange, (iii) provide that no more than 28,439,015 of shares of the Company’s common stock shall be issued pursuant to optional exchanges under the  September 2019 Exchange Agreement (whether by common stock exchange or upon conversion of Series B-2 Shares (as defined in the  September 2019 Exchange Agreement Amendment)), subject to adjustment to reflect stock splits and similar events and (iv) eliminate limitations regarding the timing and aggregate amount of principal which  may be exchanged under the  September 2019 Exchange Agreement. These changes in the  September 2019 Exchange Agreement Amendment significantly modified the Optional Exchange Principal Amount, as such after giving effect to the  September Exchange Agreement Amendment the Optional Exchange Principal Amount ceases to exist the new optional exchanges are referred to as the Deerfield Optional Conversion Feature. After giving effect to the Reverse Stock Split effected in  December 2020, the exchange price of the Deerfield Optional Conversion Feature would have been $9.60 per share or the average of the volume-weighted average price of the common stock on the principal securities exchange or trading market on which the common stock is then trading on each of the 15 trading days immediately preceding such exchange and the shares of the Company’s common stock issued pursuant to the optional exchanges would have been 1,777,437 shares of common stock.

In connection with entering into the  September 2019 Amendment, the Company filed an amendment to the Series B-2 Certificate of Designation (the “Series B-2 Certificate of Designation Amendment”) with the Secretary of State of the State Delaware. The Series B-2 Certificate of Designation Amendment provides that each share of the Company’s Series B-2 preferred stock is convertible into shares of the Company’s common stock at a per share price equal to the common stock exchange price under the  September 2019 Exchange Agreement, which equals the greater of (i) $9.60 (subject to adjustment to reflect stock splits and similar events), or (ii) the average of the volume-weighted average prices of the Company’s common stock on each of the 15 trading days immediately preceding such exchange.

As of  September 30, 2020, the Deerfield Lenders had converted all $17.1 million of principal under the  December 2019 Notes into all 1,777,437 shares of common stock available under the Deerfield Optional Conversion Feature.

The Company determined the changes to the Deerfield Convertible Note met the definition of a troubled debt restructuring under ASC 470-60, Troubled Debt Restructurings by Debtors, as the Company was experiencing financial difficulties and Deerfield granted a concession. The amendments to the terms of the Deerfield Convertible Note resulted in no gain on restructuring because the total cash outflows required under the amended Deerfield Convertible Note exceeded the carrying value of the original Deerfield Convertible Note immediately prior to amendment. Prospectively, the Deerfield Convertible Note will continue to be carried net of the associated discount and debt issuance costs which will be amortized and recorded as interest expense using a modified effective interest rate based on the amendments.

The changes to the 2021 Notes, under the December 2019 Exchange Agreement, referred to after as the December 2019 Notes, were accounted for as a debt modification, prospectively, the December 2019 Notes will be carried net of the associated discount and debt issuance costs which will be amortized and recorded as interest expense using a modified effective interest rate based on the amendments.

2021 Note Exchange Effected in January 2020

In  January 2020, the Company entered into the  January 2020 Exchange Agreement (the  “January 2020 Exchange Agreement”) with M. Kingdon Offshore Master Fund, LP (“Kingdon”). Under the  January 2020 Exchange Agreement, the Company issued a senior secured convertible note in the aggregate principal amount of approximately $3.0 million (the  “January 2020 Note”) in exchange for the cancellation of an aggregate of $3.0 million principal amount and accrued interest of the 2021 Note then owned by Kingdon. Upon entering into the  January 2020 Exchange Agreement, the Company agreed to pay Kingdon an interest payment of approximately $37,000, which represents 50% of the accrued and unpaid interest, as of  January 13, 2020, on Kingdon’s 2021 Note. The remainder of such interest was included in the principal amount of the  January 2020 Note.

The  January 2020 Note was issued with substantially the same terms and conditions as the  December 2019 Notes (as amended by the amendment described in more detail below).

In connection with entering into the  January 2020 Exchange Agreement, the Company entered into an Amendment to Facility Agreement and  December 2019 Notes and Consent (the  “December 2019 Note Amendment”) with the  December 2019 Holders that, among other things, (i) amended the  December 2019 Notes to (a) reduce the Conversion Price (as defined in the  December 2019 Notes) from $17.11 to $5.85 per share and (b) increased the Floor Price (as defined in the  December 2019 Notes) from $0.38 to $0.583 per share, and (ii) amended the Deerfield Facility Agreement to (x) provide for Kingdon to join the Deerfield Facility Agreement as a Lender (as defined in the Deerfield Facility Agreement) and (y) provide that the 2020 Note and shall constitute a “Senior Secured Convertible Note” (as defined in the Deerfield Facility Agreement) for purposes of the Deerfield Facility Agreement and other Transaction Documents (as defined in the Deerfield Facility Agreement). After giving effect to the Reverse Stock Split effected in  December 2020, the Conversion Price became $93.60 per share and the Floor Price became $9.328 per share.

The changes to the 2021 Note, under the  January 2020 Exchange Agreement, referred to after as the  January 2020 Note, were accounted for as a debt modification, prospectively, the  January 2020 Note will be carried net of the associated discount and debt issuance costs which will be amortized and recorded as interest expense using a modified effective interest rate based on the amendments.

December 2020 Exchange Agreement and Amendment to Facility Agreement, Notes and Investors’ Rights Agreement

In  December 2020, the Company entered into a  December 2020 Exchange Agreement and Amendment to Facility Agreement, Notes and Investors’ Rights Agreement, as amended (the  “December 2020 Exchange Agreement”) with the Deerfield Lenders, DSC and Kingdon (collectively, the “Facility Agreement Note Holders”). Under the  December 2020 Exchange Agreement, the Company and the Facility Agreement Note Holders agreed that (a) the Company will make a cash pre-payment of a portion of principal amount of the Deerfield Convertible Note, the  December 2019 Notes and the  January 2020 Note (collectively, the “Facility Agreement Notes”) to the Facility Agreement Note Holders (the “Debt Payment”) equal to approximately $30.3 million, plus accrued interest if such payment is made on or after  January 1, 2021, and (b) subject to the satisfaction or waiver of certain conditions specified in the  December 2020 Exchange Agreement, including the making of the Debt Payment, issue shares of its Series B-2 Preferred Stock and warrants exercisable for shares of its common stock (the “Exchange Warrants”), in exchange for the cancellation of a portion of the principal amount of the Facility Agreement Notes owned by the Facility Agreement Note Holders in an aggregate amount equal to the Debt Payment, plus the Q4 PIK Interest Payment (as defined in the  December 2020 Exchange Agreement) (such transaction, the  “December 2020 Exchange”).

The  December 2020 Exchange Agreement amended the Facility Agreement Notes to provide that the failure of the Company’s common stock to remain listed on an eligible securities market will not constitute a “Major Transaction” unless such failure occurs after  March 31, 2023.

Subject to the satisfaction or waiver of certain conditions specified in the  December 2020 Exchange Agreement, including the making of the Debt Payment and the consummation of the exchange, the  December 2020 Exchange Agreement amended that certain Facility Agreement dated as of  June 2, 2014, as amended (the “Facility Agreement”), by and among the Company and the Facility Agreement Note Holders in order to, among other things, (i) extend the maturity date of the Facility Agreement Notes to  March 31, 2023, (ii) provide for cash payments of interest on the Loans (as defined in the Facility Agreement) for the periods following  July 1, 2021, and (iii) provide for specified prepayment terms on the Loans.

The  December 2020 Exchange Agreement amended that certain Amended and Restated Investors’ Rights Agreement, dated as of  February 19, 2015 (the “IRA”), by and among the Company, Deerfield and the other parties signatory thereto in order to, among other things, add Deerfield Special Situations Fund, L.P. as a party thereto and to give effect to the issuance of the Exchange Warrants and the Company’s registration obligations under the  December 2020 Exchange Agreement (as described in more detail below).

The Exchange Warrants issued pursuant to the  December 2020 Exchange Agreement were exercisable for a number of shares of the Company’s common stock equal to 75% of the shares of common stock issuable upon conversion of the Series B-2 Preferred Stock issued in the Exchange (without regard for any beneficial ownership limitations included therein). The Exercise Warrants were subject to substantially the same terms and conditions as the warrants issued to the public in the public offering of the Company’s securities contemplated pursuant to a registration statement on Form S-1 (File No. 333-250945) (the “Public Offering”), with an exercise price equal to the exercise price per share of the warrants issued in the Public Offering and provided that the Facility Agreement Note Holders will be limited from exercising such Exchange Warrants if, as a result of such exercise, such holders (together with certain affiliates and “group” members of such holders) would beneficially own more than 4.985% of the total number of shares of the Company’s common stock then issued and outstanding.

In anticipation of the Public Offering, and to meet the Nasdaq Listing Requirements, the Company agreed in  December 2020 to restructure the  December 2019 Notes and the  January 2020 Note in the aggregate principal amount of $60.8 million and the Deerfield Note in the principal amount of $7.5 million (collectively the "the Facility Notes"). The total outstanding principal and accrued interest under the Facility Notes was $69.4 million as of  December 31, 2020.

Under the terms of the December 2020 Exchange Agreement, the Company, on January 12, 2021, in connection with the closing of the Public Offering:

● Exchanged $31.5 million of the outstanding principal and accrued interest on the Facility Notes for (i) 31,476.98412 shares of Series B-2 Preferred Stock, and (ii) Exchange Warrants exercisable for 3,632,019 shares of the Company's common stock, and

● Made a payment of $30.3 million (the "Debt Payment"), in partial repayment of the remaining outstanding principal and accrued interest of the Facility Notes.

Following the completion of these transactions, the aggregate balance of principal and accrued interest remaining outstanding under the Facility Notes was approximately $7.6 million. With respect to this remaining outstanding balance under the Facility Notes, the December 2020 Exchange Agreement amended the terms of that debt to provide that:

● The maturity date was changed to March 31, 2023, and the debt was prepayable upon specified conditions, and

● Interest would accrue at the rate of 6.75% per annum, payable quarterly, would be added to principal until June 30, 2021, and then be payable in cash thereafter.

The changes to the Facility Notes, under the  December 2020 Exchange Agreement, were accounted for as a debt extinguishment as the cash flows immediately after the  December 2020 Exchange Agreement were substantially different from the cash flows immediately prior to the  December 2020 Exchange Agreement and while the Company was experiencing financial difficulties it was determined that the lender did not grant a concession. As such, a loss of extinguishment related to the extinguishment of the old notes is recorded in the unaudited condensed statement of operations for the three months ended March 31, 2021, and additional debt issuance costs related the new notes were capitalized and amortized using the effective interest method through the Payoff of Facility Agreement Notes (discussed below).

The transactions contemplated under the  December 2020 Exchange Agreement, including the obligation to pre-pay any portion of the Facility Agreement Notes or to complete the Exchange and the effectiveness of the amendments to the Facility Agreement, the Notes and the IRA, were subject to specified conditions of closing, including certain closing of the Public Offering, the filing of the Restated Series B-2 Certificate of Designation (as defined below) and the approval for listing of the Company’s common stock, including the shares issuable upon conversion of the Series B-2 Preferred Stock and exercise of the Exchange Warrants, on the Nasdaq Capital Market.

As a condition to closing of the  December 2020 Exchange Agreement, the Company filed an Amended and Restated Certificate of Designation of Preferences, Rights and Limitations of Series B-2 Convertible Preferred Stock (the “Restated Series B-2 Certificate of Designation”) with the Secretary of State of the State Delaware, setting forth the preferences, rights and limitations of the Series B-2 Preferred Stock.

Each share of Series B-2 Preferred Stock had an aggregate stated value of $1,000 and was convertible into shares of the Company’s common stock at a per share price equal to the price per share to the public of the Company’s common stock in the Public Offering (subject to adjustment to reflect stock splits and similar events).

The Series B-2 Preferred Stock was convertible at any time on or after the PDUFA Date (as defined in the Restated Series B-2 Certificate of Designation) at the option of the holders thereof; provided that the holders thereof will be prohibited from converting shares of Series B-2 Preferred Stock into shares of the Company’s common stock if, as a result of such conversion, such holders (together with certain affiliates and “group” members of such Holders) would beneficially own more than 4.985% of the total number of shares of the Company’s common stock then issued and outstanding. The Series B-2 Preferred Stock is not redeemable. In the event of the Company’s liquidation, dissolution or winding up or a change in control of the Company (each, a “Liquidation Event”), the holders of Series B-2 Preferred Stock will receive, prior to any distribution or payment on our common stock, an amount equal to the greater of (i) $1,000 per share (in the case of a change in control, transaction consideration with such value), or (ii) the amount (in the case of a change in control, in the form of the transaction consideration) per share each such holder would have been entitled to receive if every share of Series B-2 Preferred Stock had been converted into common stock immediately prior to such Liquidation Event, in each case, plus any declared but unpaid dividends thereon. With respect to rights upon liquidation, the Series B-2 Preferred Stock ranks senior to the common stock, on parity with any Parity Securities (as defined in the Restated Series B-2 Certificate of Designation) and junior to existing and future indebtedness. Except as otherwise required by law (or with respect to approval of certain actions involving the Company’s organizational documents that adversely affect the holders of Series B-2 Preferred Stock and other specified matters regarding the rights, preferences and privileges of the Series B-2 Preferred Stock), the Series B-2 Preferred Stock did not have voting rights. The Series B-2 Preferred Stock is not subject to any price-based anti-dilution protections and does not provide for any accruing dividends but provides that holders of Series B-2 Preferred Stock will participate in any dividends on the Company’s common stock on an as-converted basis (without giving effect to the limitation on conversion described above). The Restated Series B-2 Certificate of Designation also provides for partial liquidated damages in the event that the Company fails to timely convert shares of Series B-2 Preferred Stock into common stock in accordance with the Restated Series B-2 Certificate of Designation.

Payoff of Facility Agreement Notes and Termination of Facility Agreement

On  February 8, 2021, the Company entered into a payoff letter with the Facility Agreement Note Holders, pursuant to which the Company agreed to pay off and thereby terminate the Facility Agreement.

Pursuant to the payoff letter, the Company paid a total of $8.0 million to the Facility Agreement Note Holders, representing the principal balance, accrued interest outstanding and a prepayment fee in repayment of the Company’s outstanding obligations under the Facility Agreement.

Pursuant to the payoff letter, all outstanding indebtedness and obligations of the Company owing to the Facility Agreement Note Holders under the Facility Agreement have been paid in full. The Facility Agreement and the notes thereunder, as well as the security interests in the assets of the Company securing the Facility Agreement and note obligations, have been terminated. The Facility Agreement Note Holders will retain the warrants previously issued to them by the Company.

The Company determined the payoff letter met the liability derecognition threshold under ASC 405-20, Liabilities - Extinguishment of Liabilities, as the Company repaid the debt (and has been relieved of the related obligation) without entering into new debt with the Facility Agreement Note Holders and there is no other continuing debt with the Facility Agreement Note Holders. The payoff letter resulted in a loss on extinguishment of debt which is shown within other (expense) income in the unaudited condensed statements of operations for the three months ended  March 31, 2021.

PPP Loan

On  April 23, 2020, the Company received proceeds of $0.8 million from the PPP Loan under the PPP of the CARES Act, a portion of which  may be forgiven, which the Company used to retain current employees, maintain payroll and make lease and utility payments. In  May 2021, the Company received notice from the U.S. Small Business Administration that the principal and interest due under its PPP Loan had been forgiven in full.