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Commitments and Contingencies | 3 Months Ended
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Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | Commitments and Contingencies Operating Leases The Company leases certain office space, laboratory facilities, and equipment. These leases require monthly lease payments that may be subject to annual increases throughout the lease term. Certain of these leases also include renewal options at the election of the Company to renew or extend the lease. These optional periods have not been considered in the determination of the ROU assets or lease liabilities associated with these leases as the Company did not consider it reasonably certain it would exercise the options. The Company performed evaluations of its contracts and determined it has operating leases. There have been no material changes in our operating leases as compared to operating leases disclosed in our Annual Report on Form 10-K for the year ended December 31, 2022. Nighthawk Biosciences, Inc. License Agreement In connection with a license agreement with Nighthawk Biosciences, Inc. (“Nighthawk”), the Company is required to make payments of up to $20.6 million in aggregate for the achievement of specified development, regulatory and commercial sales milestones for certain licensed products. The Company paid $0.1 million to Nighthawk in the three months ended March 31, 2023 as a milestone payment for the Company’s completion of a Phase 1 clinical trial for SL-172154. The Company is required to pay Nighthawk a percentage of upfront fees or other non-royalty payments not tied to milestone events that it receives in connection with certain sublicenses of the licensed patents. The Company is also required to pay Nighthawk a royalty on all of its worldwide net sales, those of its affiliates, and sublicenses of certain licensed patents in the low single digits. The Company has not recorded a liability for the aforementioned payments given the achievement of specified development, regulatory and commercial sales milestones for certain licensed products is not probable as of the balance sheet date. Litigation From time to time, the Company may become involved in various legal actions arising in the ordinary course of business. On January 31, 2022 and February 11, 2022, putative class action lawsuits were filed in the U.S. District Court for the Eastern District of New York against us and certain of the Company’s officers and directors. The cases were consolidated on June 2, 2022, and the plaintiffs filed an amended complaint on July 1, 2022. The amended complaint cites the volatility in the Company’s common stock and alleges that the defendants made or are responsible for misleading omissions regarding the Company’s clinical trial results and the collaboration agreement with Millennium Pharmaceuticals, Inc., a wholly-owned subsidiary of Takeda Pharmaceutical Company, Ltd. The parties reached a settlement in principle of the plaintiffs’ claims in the amount of $1.4 million on November 2, 2022. The settlement is subject to a definitive settlement agreement, notice to stockholders and court approval. The parties filed their motion for preliminary approval of the settlement agreement with the court on December 14, 2022, and, as of May 8, 2023, that motion is pending. The Company has accrued the settlement amount in accrued expenses and other current liabilities as of March 31, 2023. Contractual Obligations Contractual obligations represent future cash commitments and liabilities under agreements with third parties, and exclude contingent liabilities for which the Company cannot reasonably predict future payment. The Company’s contractual obligations result primarily from obligations for various CMOs and CROs, which include potential payments that may be required under its agreements. The contracts also contain variable costs and milestones that are hard to predict, as they are based on such things as patients enrolled and clinical trial sites. The timing of payments and actual amounts paid under CMO and CRO agreements may be different depending on the timing of receipt of goods or services or changes to agreed-upon terms or amounts for some obligations. Such agreements are cancellable upon written notice by the Company and, therefore, are not long-term liabilities.

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