Investments

12 Months Ended

Dec. 31, 2024

Equity Method Investments and Joint Ventures [Abstract]

Marketable Securities

Unrestricted available-for-sale marketable securities held by the Company are as follows (dollars in thousands):


	December 31, 2024		December 31, 2023
Corporate, U.S. government agency and municipal debt securities
Amortized cost	$	384,481	$	197,153
Gross unrealized gains	89		5
Gross unrealized losses	(289)		(721)
Total fair value	$	384,281	$	196,437

As of December 31, 2024, all of our unrestricted available-for-sale marketable securities have contractual maturities of one year or less.

There was no impairment on any available-for-sale marketable securities as of December 31, 2024 and December 31, 2023.

Investment in Navitor

In April 2020, the Company entered into a development agreement (the Development Agreement) with Navitor Pharmaceuticals, Inc. (Navitor Inc.). The Company can terminate the Development Agreement upon 30 days' notice. Under the terms of the Development Agreement, the Company and Navitor Inc. will jointly conduct a Phase 2 clinical program for NV-5138 (SPN-820) for treatment-resistant depression. The Company will bear all of the Phase 1 and Phase 2 development costs incurred by either party, up to a maximum of $50 million, which amount could be increased under the terms of the Development Agreement upon Navitor Inc.’s request and the Company’s consent. In 2020, the Company paid a one-time, nonrefundable, and non-creditable fee of $10 million for the option to acquire or license NV-5138 (SPN-820) and made a $15 million equity investment representing approximately 13% ownership in Navitor Inc. There are also certain additional payments which could be incurred by the Company that are contingent upon Navitor Inc. achieving defined milestones. These payments include an additional license or acquisition fee depending on whether the Company ultimately licenses or acquires NV-5138 (SPN-820), and subsequent clinical, regulatory and sales milestone payments. The total payments, exclusive of the royalty payments on net sales of NV-5138 (SPN-820) and development costs paid by the Company under the agreement, have the potential to reach $410 million to $475 million, which includes an aggregate upfront payment of $25 million paid in 2020 for the option to acquire or license NV-5138 (SPN-820) and the equity investment, an additional license or acquisition fee depending on whether the

Company ultimately licenses or acquires NV-5138 (SPN-820), and subsequent clinical, regulatory and sales based milestone payments. The Company also will have the first right of refusal for any compound with a similar mechanism of action to NV-5138 (SPN-820) on mTORC1 in the central nervous system.

In addition to entering into the Development Agreement in April 2020, as mentioned above , the Company acquired Series D Preferred Shares of Navitor Inc. (the Navitor Shares), an equity investment representing an approximately 13% ownership position in Navitor Inc. As part of a legal restructuring in March 2021, the Company's Navitor Inc. Shares were exchanged for membership interests in Navitor Pharmaceutics LLC (Navitor LLC), which became the sole shareholder of Navitor Inc. The Company has determined that although Navitor LLC is a VIE, the Company does not consolidate the results of this VIE into its financial results because the Company lacks the power to direct the activities that most significantly impact Navitor LLC’s economic performance.

In the second quarter of 2024, the Company consented to payment of additional Phase 2 development costs for NV-5138 (SPN-820) as they are incurred, but reserves the right to terminate payment of future development costs at its discretion.

The maximum exposure to losses related to Navitor LLC includes the approximately $50.0 million for Phase 1 and Phase 2 development of NV-5138 (SPN-820) already paid by the Company, plus the cost of other development and formulation activities provided by the Company and additional Phase 2 development costs the Company agreed to pay pursuant to the Development Agreement.

Subsequent to the Development Agreement entered into in 2020, no additional equity investment has been made or financing has been provided to Navitor Inc. or Navitor LLC.

The Company records its share of the results of Navitor LLC, a private company, on a quarter lag as the financial information of Navitor LLC is not available on a sufficiently timely basis for the Company to apply the equity method of accounting. In December 2021, Navitor LLC sold one of its subsidiaries and distributed cash to its members in accordance with each member's share of the proceeds from the sale. The Company received $12.9 million in December 2021 from Navitor LLC in connection with this sale. As the Company's policy is to record its share of the results in its equity method investment on a quarter lag as previously indicated, the Company recorded the cash amount received in Other current liabilities in the consolidated balance sheets as of December 31, 2021. In the first quarter of 2022, the Company determined its estimated share of Navitor LLC's year-end 2021 earnings and recorded a gain of $12.9 million in Interest and other income, net in the consolidated statement of earnings.