8. Commitments and Contingencies

Leases

The Company leases office space in Chesterbrook, Pennsylvania and equipment. The Company’s principal office is located at 955 Chesterbrook Boulevard, Chesterbrook, Pennsylvania, where the Company currently leases approximately 8,231 square feet of developed office space on the first floor and 40,565 square feet of developed office space on the second floor. The lease term for this space extends through May 2028. On October 11, 2018, the Company entered into an agreement with The Vanguard Group, Inc., or Vanguard, whereby Vanguard agreed to sublease the 40,565 square feet of space on the second floor for an initial term of 37 months. On October 2, 2020, Vanguard notified the Company that they exercised the first option to extend the sublease term for three years through November 30, 2024. Vanguard has a second option to extend the sublease term for an additional three years through November 30, 2027. The sublease provides for rent abatement for the first month of the term; thereafter, the rent payable to the Company by Vanguard under the sublease is (i) $0.50 less during months 2 through 13 of the sublease and (ii) in month 14 and thereafter of the sublease, $1.00 less than the base rent payable by the Company under its master lease with Chesterbrook Partners, L.P. Vanguard also is responsible for paying to the Company all tenant energy costs, annual operating costs, and annual tax costs attributable to the subleased space during the term of the sublease. Rent expense and associated sublease income are recorded in the Company’s statements of operations and comprehensive loss as other income (expense).

Supplemental balance sheet information related to leases was as follows (in thousands):

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The components of lease expense were as follows (in thousands):

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Supplemental cash flow information related to leases was as follows (in thousands):

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Our operating lease liabilities will mature, as follows (in thousands):

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Per the terms of our sublease, we expect the following inflows (in thousands):

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Weighted average lease term and discount rates are as follows:

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The Company had no deferred rent at December 31, 2020 or 2019 related to its facility leases.

Legal Proceedings

In October and November 2018, the Company and certain current and former officers and directors were sued in three purported class actions filed in the U.S. District Court for the Eastern District of Pennsylvania, or the EDPA, alleging violations of the federal securities laws. In January 2019, the three lawsuits were consolidated into one action, and on May 29, 2019, the District Court appointed a group of five individual investors as lead plaintiffs. A consolidated amended complaint was filed on August 2, 2019, alleging, among other things, that the Company and two former officers made false and misleading statements regarding the Company’s business, operations, and prospects, including certain statements made relating to the Company’s End-of-Phase 2 meeting with the FDA, and certain statements concerning top-line results from the Company’s Phase 3 studies. The plaintiffs seek, among other remedies, unspecified damages, attorneys’ fees and other costs, and unspecified equitable or injunctive relief. On August 28, 2020, the EDPA granted in part and denied in part the defendants’ motion to dismiss. On October 2, 2020, the Company and the individual defendants filed their answer to the amended complaint, denying all liability. On February 11, 2021, the parties agreed in principle to a settlement, which is subject to final documentation and approval by the Court. The Company and the individual defendants do not acknowledge any wrongdoing as part of the settlement, and a monetary payment of $8.5 million will be made to the plaintiffs and their counsel, all of which will be funded by the Company’s insurance carriers. The Company has recorded the $8.5 million estimated settlement liability and the $8.5 million

estimated insurance recovery in its 2020 financial statements. The Company continues to believe that the claims are without merit, and if necessary, the Company intends to vigorously defend itself and its former officers against the allegations.

In December 2018, a shareholder derivative action was filed on behalf of the Company and against certain current and former officers and directors in the EDPA, and in February 2019, two additional, similar shareholder derivative actions were filed in the U.S. District Court for the District of Delaware. A fourth similar shareholder derivative action was filed in the EDPA in September 2019, and a fifth, similar derivative action was filed in the EDPA in November 2019. A similar sixth derivative action was filed in the EDPA in September 2020. These cases, which involve facts similar to the consolidated securities lawsuits, assert claims against the individual defendants for, among other things, breach of fiduciary duty, waste of corporate assets, violations of the federal securities laws, and unjust enrichment, and they make a number of demands, including for monetary damages and other equitable and injunctive relief. Some of the derivative actions have been stayed in favor of the consolidated securities lawsuits. The Company recorded in the fourth quarter of 2020 an estimated liability of $0.5 million and a corresponding insurance recovery of the same amount.