Nature of business and basis of presentation	9 Months Ended
Sep. 30, 2019
Nature of business and basis of presentation
Nature of business and basis of presentation	1. NATURE OF BUSINESS AND BASIS OF PRESENTATION Nature of Business— Kala Pharmaceuticals, Inc. (the “Company”) was incorporated on July 7, 2009, and is a biopharmaceutical company focused on the development and commercialization of therapeutics using its AMPPLIFYTM mucus-penetrating particle (“MPP”) Drug Delivery Technology, with an initial focus on the treatment of eye diseases. The Company has applied the AMPPLIFY technology to loteprednol etabonate (“LE”), a corticosteroid designed for ocular applications, resulting in the U.S. Food and Drug Administration’s (the “FDA”) approval of INVELTYS ® (loteprednol etabonate ophthalmic suspension) 1% as the first and only topical twice-daily ocular corticosteroid for treatment of post-operative inflammation and pain following ocular surgery, and the development of its lead product candidate, KPI-121 0.25%, which we plan to commercialize under the brand name EYSUVISTM (loteprednol etabonate ophthalmic suspension) 0.25%, for the temporary relief of the signs and symptoms of dry eye disease. On October 16, 2018, the Company submitted a New Drug Application (“NDA”) to the FDA for EYSUVIS. On August 8, 2019, the Company announced that it received a complete response letter (“CRL”) from the FDA regarding this NDA. The FDA indicated that efficacy data from an additional clinical trial will be needed to support a resubmission of the NDA. Based upon the previous recommendation of the FDA, the Company initiated an additional Phase 3 clinical trial (“STRIDE 3”) (STRIDE- Short Term Relief In Dry Eye), in the third quarter of 2018, which the Company expects will serve as the basis for its response to the CRL. The Company is targeting topline data for STRIDE 3 in the first quarter of 2020. The Company is evaluating opportunities for MPP nanosuspensions of LE with less frequent daily dosing regimens for the temporary relief of the signs and symptoms of dry eye disease and for potential chronic treatment of dry eye disease. The Company is also evaluating compounds in its receptor Tyrosine Kinase Inhibitor program (the “rTKI program”), that inhibit the vascular endothelial growth factor (“VEGF”), pathway, for the potential treatment of a number of retinal diseases. In January 2019, the Company launched its first commercial product, INVELTYS, in the United States. The Company is currently engaged in the commercialization of INVELTYS, research and development activities, raising capital and recruiting skilled personnel. The Company is subject to a number of risks similar to those of other companies conducting high‑risk, research and development of pharmaceutical product candidates and launching a product for the first time. Principal among these risks are dependence on key individuals and intellectual property, competition from other products and companies and the technical risks associated with the successful research, development and marketing of its product candidates. The Company’s success is dependent upon its ability to raise additional capital in order to fund ongoing and future research and development, obtain regulatory approval of its product candidates, successfully commercialize its products, generate revenue, meet its obligations, and, ultimately, attain profitable operations. Liquidity— Since inception, the Company has incurred significant losses from operations and negative cash flows from operations. As of September 30, 2019, the Company had an accumulated deficit of $273.5 million. The Company has generated only limited revenues to date from product sales and has financed operations primarily through proceeds from its initial public offering of common stock (“IPO”), private placements of preferred stock, convertible debt financings, borrowings under credit facilities, warrants, public common stock offerings and sales of its common stock under its at-the-market offering facility. The Company has devoted substantially all of its financial resources and efforts to research and development, including preclinical studies and clinical trials and engaging in activities to launch and commercialize INVELTYS. The Company expects to continue to incur significant expenses and operating losses over the next several years. Net losses may fluctuate significantly from quarter-to-quarter and year-to-year. The Company believes that its existing cash on hand as of September 30, 2019, will enable it to fund its planned operating expenses, debt service obligations and capital expenditure requirements for at least twelve months from the date these condensed consolidated financial statements were issued. This evaluation is based on relevant conditions and events that are known and reasonably knowable at the date that the condensed consolidated financial statements are issued. As a result, the Company could deplete its available capital resources sooner than it currently expects. Use of Estimates—The preparation of condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, expense, and related disclosures. The Company bases estimates and assumptions on historical experience when available and on various factors that it believes to be reasonable under the circumstances. The Company evaluates its estimates and assumptions on an ongoing basis. Estimates and assumptions relied upon in preparing these condensed consolidated financial statements relate to, but are not limited to, revenue recognition, inventory, the present value of lease liabilities and the corresponding right-of-use assets, the fair value of warrants, stock compensation, accrued expenses and the recoverability of the Company’s net deferred tax assets and related valuation allowance. Actual results may differ from these estimates under different assumptions or conditions. Net Loss per Share—Basic net loss per share is computed using the weighted average number of common shares outstanding during the period. Diluted net loss per share is computed using the sum of the weighted average number of common shares outstanding during the period and, if dilutive, the weighted average number of potential shares of common stock, including the assumed exercise of stock options and warrants. Basic and diluted shares outstanding are the same for each period presented as all common stock equivalents would be antidilutive due to the net losses incurred. Unaudited Interim Financial Information—The condensed consolidated financial statements of the Company included herein have been prepared, without audit, pursuant to the rules and regulations of the Securities Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted from this report, as is permitted by such rules and regulations. The accompanying condensed consolidated financial statements reflect all adjustments consisting of normal, recurring adjustments, that are necessary for a fair presentation of the financial position, results of operations, statement of stockholders’ equity and cash flows for the interim periods presented. Interim results are not necessarily indicative of results for a full year. Accordingly, these condensed consolidated financial statements should be read in conjunction with the financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018 (the “Annual Report”). The unaudited condensed consolidated financial statements include the accounts of Kala Pharmaceuticals, Inc. and its wholly owned subsidiary, Kala Pharmaceuticals Security Corporation. All intercompany transactions and balances have been eliminated in consolidation.

1. NATURE OF BUSINESS AND BASIS OF PRESENTATION

Nature of Business— Kala Pharmaceuticals, Inc. (the “Company”) was incorporated on July 7, 2009, and is a biopharmaceutical company focused on the development and commercialization of therapeutics using its AMPPLIFYTM mucus-penetrating particle (“MPP”) Drug Delivery Technology, with an initial focus on the treatment of eye diseases. The Company has applied the AMPPLIFY technology to loteprednol etabonate (“LE”), a corticosteroid designed for ocular applications, resulting in the U.S. Food and Drug Administration’s (the “FDA”) approval of INVELTYS ® (loteprednol etabonate ophthalmic suspension) 1% as the first and only topical twice-daily ocular corticosteroid for treatment of post-operative inflammation and pain following ocular surgery, and the development of its lead product candidate, KPI-121 0.25%, which we plan to commercialize under the brand name EYSUVISTM (loteprednol etabonate ophthalmic suspension) 0.25%, for the temporary relief of the signs and symptoms of dry eye disease. On October 16, 2018, the Company submitted a New Drug Application (“NDA”) to the FDA for EYSUVIS. On August 8, 2019, the Company announced that it received a complete response letter (“CRL”) from the FDA regarding this NDA. The FDA indicated that efficacy data from an additional clinical trial will be needed to support a resubmission of the NDA. Based upon the previous recommendation of the FDA, the Company initiated an additional Phase 3 clinical trial (“STRIDE 3”) (STRIDE- Short Term Relief In Dry Eye), in the third quarter of 2018, which the Company expects will serve as the basis for its response to the CRL. The Company is targeting topline data for STRIDE 3 in the first quarter of 2020. The Company is evaluating opportunities for MPP nanosuspensions of LE with less frequent daily dosing regimens for the temporary relief of the signs and symptoms of dry eye disease and for potential chronic treatment of dry eye disease. The Company is also evaluating compounds in its receptor Tyrosine Kinase Inhibitor program (the “rTKI program”), that inhibit the vascular endothelial growth factor (“VEGF”), pathway, for the potential treatment of a number of retinal diseases.

In January 2019, the Company launched its first commercial product, INVELTYS, in the United States. The Company is currently engaged in the commercialization of INVELTYS, research and development activities, raising capital and recruiting skilled personnel. The Company is subject to a number of risks similar to those of other companies conducting high‑risk, research and development of pharmaceutical product candidates and launching a product for the first time. Principal among these risks are dependence on key individuals and intellectual property, competition from other products and companies and the technical risks associated with the successful research, development and marketing of its product candidates. The Company’s success is dependent upon its ability to raise additional capital in order to fund ongoing and future research and development, obtain regulatory approval of its product candidates, successfully commercialize its products, generate revenue, meet its obligations, and, ultimately, attain profitable operations.

Liquidity— Since inception, the Company has incurred significant losses from operations and negative cash flows from operations. As of September 30, 2019, the Company had an accumulated deficit of $273.5 million. The Company has generated only limited revenues to date from product sales and has financed operations primarily through proceeds from its initial public offering of common stock (“IPO”), private placements of preferred stock, convertible debt financings, borrowings under credit facilities, warrants, public common stock offerings and sales of its common stock under its at-the-market offering facility. The Company has devoted substantially all of its financial resources and efforts to research and development, including preclinical studies and clinical trials and engaging in activities to launch and commercialize INVELTYS. The Company expects to continue to incur significant expenses and operating losses over the next several years. Net losses may fluctuate significantly from quarter-to-quarter and year-to-year.

The Company believes that its existing cash on hand as of September 30, 2019, will enable it to fund its planned operating expenses, debt service obligations and capital expenditure requirements for at least twelve months from the date these condensed consolidated financial statements were issued. This evaluation is based on relevant conditions and events that are known and reasonably knowable at the date that the condensed consolidated financial statements are issued. As a result, the Company could deplete its available capital resources sooner than it currently expects.

Use of Estimates—The preparation of condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, expense, and related disclosures. The Company bases estimates and assumptions on historical experience when available and on various factors that it believes to be reasonable under the circumstances. The Company evaluates its estimates and assumptions on an ongoing basis. Estimates and assumptions relied upon in preparing these condensed consolidated financial statements relate to, but are not limited to, revenue recognition, inventory, the present value of lease liabilities and the corresponding right-of-use assets, the fair value of warrants, stock compensation, accrued expenses and the recoverability of the Company’s net deferred tax assets and related valuation allowance. Actual results may differ from these estimates under different assumptions or conditions.

Net Loss per Share—Basic net loss per share is computed using the weighted average number of common shares outstanding during the period. Diluted net loss per share is computed using the sum of the weighted average number of common shares outstanding during the period and, if dilutive, the weighted average number of potential shares of common stock, including the assumed exercise of stock options and warrants.

Basic and diluted shares outstanding are the same for each period presented as all common stock equivalents would be antidilutive due to the net losses incurred.

Unaudited Interim Financial Information—The condensed consolidated financial statements of the Company included herein have been prepared, without audit, pursuant to the rules and regulations of the Securities Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted from this report, as is permitted by such rules and regulations. The accompanying condensed consolidated financial statements reflect all adjustments consisting of normal, recurring adjustments, that are necessary for a fair presentation of the financial position, results of operations, statement of stockholders’ equity and cash flows for the interim periods presented. Interim results are not necessarily indicative of results for a full year. Accordingly, these condensed consolidated financial statements should be read in conjunction with the financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018 (the “Annual Report”).

The unaudited condensed consolidated financial statements include the accounts of Kala Pharmaceuticals, Inc. and its wholly owned subsidiary, Kala Pharmaceuticals Security Corporation. All intercompany transactions and balances have been eliminated in consolidation.