Investments and Fair Value Measurements |
5. Investments and Fair Value Measurements Available-for-Sale Securities The estimated fair value of marketable securities is based on quoted market prices for these or similar investments obtained from a commercial pricing service. The fair market value of marketable securities classified within Level 1 is based on quoted prices for identical instruments in active markets. The fair value of marketable securities classified within Level 2 is based on quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; or model-driven valuations whose inputs are observable or whose significant value drivers are observable. Observable inputs may include benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including market research publications. Available-for-sale securities are summarized below: | | | | | | | | | | | | | | | | | | | June 30, 2024 | | | | | | | | Gross | | Gross | | | | | | | | Amortized | | Unrealized | | Unrealized | | Estimated | (In thousands) | | | | Cost | | Gains | | Losses | | Fair Value | US government securities | | Level 1 | | $ | 22,260 | | $ | — | | $ | (2) | | $ | 22,258 | Commercial paper | | Level 2 | | | 39,432 | | | — | | | (20) | | | 39,412 | Marketable securities | | | | | 61,692 | | | — | | | (22) | | | 61,670 | Money market funds | | Level 1 | | | 24,842 | | | — | | | — | | | 24,842 | Total | | | | $ | 86,534 | | $ | — | | $ | (22) | | $ | 86,512 |
| | | | | | | | | | | | | | | | | | | December 31, 2023 | | | | | | | | Gross | | Gross | | | | | | | | Amortized | | Unrealized | | Unrealized | | Estimated | (In thousands) | | | | Cost | | Gains | | Losses | | Fair Value | US government securities | | Level 1 | | $ | 29,848 | | $ | — | | $ | (29) | | $ | 29,819 | US government agency securities | | Level 2 | | | 4,428 | | | — | | | (8) | | | 4,420 | Corporate notes | | Level 2 | | | 28,670 | | | 4 | | | (32) | | | 28,642 | Marketable securities | | | | | 62,946 | | | 4 | | | (69) | | | 62,881 | Money market funds | | Level 1 | | | 26,179 | | | — | | | — | | | 26,179 | Total | | | | $ | 89,125 | | $ | 4 | | $ | (69) | | $ | 89,060 |
As of June 30, 2024, all of the Company’s available-for-sale securities had contractual maturities within six months, and the weighted-average maturity of marketable securities was approximately two months. There were no transfers between Level 1 and Level 2 during the periods presented, and there have been no material changes to the Company’s valuation techniques during the three and six months ended June 30, 2024. Available-for-sale debt securities with unrealized losses are summarized below: | | | | | | | | | | | | | | | | | | | | | June 30, 2024 | | | Less than 12 Months | | Greater than 12 Months | | Total | | | | | | Gross | | | | | Gross | | | | | Gross | | | Estimated | | Unrealized | | Estimated | | Unrealized | | Estimated | | Unrealized | (In thousands) | | Fair Value | | Losses | | Fair Value | | Losses | | Fair Value | | Losses | US government securities | | $ | 19,283 | | $ | (2) | | $ | — | | $ | — | | $ | 19,283 | | $ | (2) | Commercial paper | | | 39,412 | | | (20) | | | — | | | — | | | 39,412 | | | (20) | Total | | $ | 58,695 | | $ | (22) | | $ | — | | $ | — | | $ | 58,695 | | $ | (22) |
| | | | | | | | | | | | | | | | | | | | | December 31, 2023 | | | Less than 12 Months | | Greater than 12 Months | | Total | | | | | | Gross | | | | | Gross | | | | | Gross | | | Estimated | | Unrealized | | Estimated | | Unrealized | | Estimated | | Unrealized | (In thousands) | | Fair Value | | Losses | | Fair Value | | Losses | | Fair Value | | Losses | US government securities | | $ | 29,819 | | $ | (29) | | $ | — | | $ | — | | $ | 29,819 | | $ | (29) | US government agency securities | | | 4,420 | | | (8) | | | — | | | — | | | 4,420 | | | (8) | Corporate notes | | | 23,641 | | | (32) | | | — | | | — | | | 23,641 | | | (32) | Total | | $ | 57,880 | | $ | (69) | | $ | — | | $ | — | | $ | 57,880 | | $ | (69) |
The Company invests primarily in high credit quality and short-term maturity debt securities with the intent to hold such securities until maturity at par value. The Company does not intend to sell the investments that are currently in an unrealized loss position, and it is unlikely that it will be required to sell the investments before recovery of their amortized cost basis, which may be at maturity. The Company reviewed its available-for-sale debt securities and determined that there were no credit-related losses to be recognized as of June 30, 2024, and there were no individual securities that were in a significant unrealized loss position as of June 30, 2024. For the three and six months ended June 30, 2024, the Company did not sell any marketable securities. For the three and six months ended June 30, 2023, the Company sold marketable securities for total proceeds of $8.6 million and $71.5 million, respectively. For the three months ended June 30, 2023, the realized net gain from the sale was immaterial, and for the six months ended June 30, 2023, the realized net loss from the sale was $0.2 million based on the specific identification method. Contingent Consideration Asset The Company recognizes a contingent consideration asset related to its sale of its equity interests in Theravance Respiratory Company, LLC (“TRC”) to Royalty Pharma Investments 2019 ICAV, an Irish collective asset-management vehicle (“Royalty Pharma”), in July 2022 (the “TRC Transaction”). The contingent consideration asset represents the fair value of potential future milestone payments and royalties (collectively, “Contingent Consideration”) related to worldwide net sales of GSK plc's (“GSK”) TRELEGY® ELLIPTA (“TRELEGY”). The Contingent Consideration was initially measured at fair value utilizing a Monte Carlo simulation model to calculate the present value of the risk-adjusted cash flows estimated to be received from the Contingent Consideration. The discount rate utilized in the valuation model was 7.83%. The fair value model involved significant unobservable inputs derived using management’s estimates. Management’s estimates were based in part on external data and reflected management’s judgements and forecasts. The primary significant unobservable input was the estimate of forecasted TRELEGY net sales which is considered a Level 3 fair value input. The Company reassesses the carrying value of the Contingent Consideration when indicators of impairment are identified and will recognize any increases in the carrying value of the asset when such contingent gains are realized. As of June 30, 2024, the Contingent Consideration had a carrying value of $194.2 million and is presented on the condensed consolidated balance sheets as “Future contingent milestone and royalty assets”. There have been no changes to the carrying value of the Contingent Consideration since its initial measurement date in July 2022. The Contingent Consideration is subject to counterparty credit risk, and the carrying value of the Contingent Consideration represents the maximum amount of potential loss due to credit risk. To date, the Company has not recorded any credit losses related to the Contingent Consideration. Ampreloxetine Funding The Company recognizes a contingent liability related to funding received from Royalty Pharma in exchange for certain future royalty rights to ampreloxetine. The contingent liability consists of an upfront $25.0 million received in July 2022 and management’s estimate of (i) a risk-adjusted future contingent $15.0 million milestone; and (ii) the amount and timing of royalties to be paid to Royalty Pharma and then discounted over the life of the arrangement using an imputed rate of interest. The excess of future estimated royalty payments over the amount of cash funding received is recognized as interest expense using the effective interest method. The balance associated with the contingent liability was initially recorded as $25.0 million, net of allocated transaction costs, in July 2022 and is reported on the condensed consolidated balance sheets as “Future royalty payment contingency”. The Company periodically reassesses the amount and timing of estimated royalty payments. To the extent such payments are materially greater or less than the Company’s previous estimates, the Company will prospectively adjust the amortization of the contingent liability and the effective interest rate. The imputed effective rate of interest on the unamortized portion of the contingent liability was approximately 8.8% as of June 30, 2024. There are a number of factors that could materially affect the amount and timing of the contingent $15.0 million milestone and royalty payments, some of which are not within the Company’s control. Such factors include, but are not limited to, changes in the projected market size, the introduction of competing products, patent protection matters, and regulatory product approval for ampreloxetine. The contingent liability was recognized using significant unobservable inputs. These inputs were derived using internal management estimates and reflect management’s judgements and forecasts. The significant unobservable inputs include the forecasted revenues, the probability and timing of the regulatory milestone, and the expected term of the royalty stream, as well as the overall probability of ampreloxetine’s success. These estimates are considered Level 3 fair value inputs. A significant change in unobservable inputs could result in a material increase or decrease to the effective interest rate of the contingent liability. If ampreloxetine regulatory approval is not achieved or if ampreloxetine sales are never recognized, the contingent liability recognized would be extinguished as the Company would not be obligated to repay any of the funding amounts received from Royalty Pharma. Changes to the contingent liability were as follows for the six months ended June 30, 2024: | | | | (In thousands) | | | | Balance at December 31, 2023 | | $ | 27,788 | Non-cash interest expense accretion | | | 1,273 | Balance at June 30, 2024 | | $ | 29,061 |
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