v3.26.1
Fair Value of Financial Instruments
 6 Months Ended
Jun. 30, 2026
Fair Value Disclosures [Abstract]  
Fair Value of Financial Instruments
Note 4. Fair Value of Financial Instruments
The following is a summary of our marketable security portfolio for the periods presented (in thousands):
Amortized
Cost		Unrealized GainsUnrealized Losses
Fair Value
June 30, 2026
Debt securities (government)$555,856 $266 $(2,757)$553,365 
December 31, 2025
Debt securities (government)$480,793 $2,028 $(34)$482,787 
The table below summarizes the contractual maturities of our available-for-sale debt securities as of June 30, 2026 (in thousands):
TotalLess than 1 Year1-5 Years
Fair value of debt securities (government)$553,365 $205,695 $347,670 
Debt security assets were assessed for risk of expected credit losses. As of June 30, 2026 and December 31, 2025, the available-for-sale debt securities were held in U.S.-government backed securities and in Treasury bonds and were assessed on an individual security basis to have a de minimis risk of credit loss.
Fair Value Measurements
FASB accounting guidance defines fair value as the price that would be received to sell an asset or paid to transfer a liability (“the exit price”) in an orderly transaction between market participants at the measurement date. The standard outlines a valuation framework and creates a fair value hierarchy in order to increase the consistency and comparability of fair value measurements and the related disclosures. In determining fair value, we use quoted prices and observable inputs. Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of us. The fair value hierarchy is broken down into three levels based on the source of inputs as follows:
Level 1—Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities.
Level 2—Valuations based on observable inputs and quoted prices in active markets for similar assets and liabilities.
Level 3—Valuations based on inputs that are unobservable and models that are significant to the overall fair value measurement.
Recurring Fair Value Measurements
Our marketable securities consist of investments in U.S. government debt securities that are classified as available-for-sale.
At June 30, 2026 and December 31, 2025, our Level 2 U.S. government debt securities were valued using readily available pricing sources which utilize market observable inputs, including the current interest rate and other characteristics for similar types of investments. Our long term equity investments classified as Level 1 were valued using their respective closing stock prices on The Nasdaq Stock Market. We did not experience any transfers of financial instruments between the fair value hierarchy levels during the three and six months ended June 30, 2026.
The following fair value hierarchy table presents information about each major category of our financial assets measured at fair value on a recurring basis (in thousands):
Fair Value Measurement at Reporting Date Using:
Quoted Prices in
Active Markets for
Identical Assets
(Level 1)		Significant Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Balance as of
June 30, 2026
Cash and cash equivalents$3,982,375 $— $— $3,982,375 
Debt securities (government)— 553,365 — 553,365 
Long term equity investments (Note 7)
64,387 — 40,000 104,387 
Total assets$4,046,762 $553,365 $40,000 $4,640,127 
Fair Value Measurement at Reporting Date Using:
Quoted Prices in
Active Markets for
Identical Assets
(Level 1)		Significant Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Balance as of
December 31, 2025
Cash and cash equivalents$3,097,817 $— $— $3,097,817 
Debt securities (government)— 482,787 — 482,787 
Long term equity investments (Note 7)
47,991 — — 47,991 
Total assets$3,145,808 $482,787 $— $3,628,595 
The following fair value hierarchy table presents information about each major category of our financial liabilities measured at fair value on a recurring basis (in thousands):
Fair Value Measurement at Reporting Date Using:
Quoted Prices in
Active Markets for
Identical Liabilities
(Level 1)		Significant Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Balance as of
June 30, 2026
Acquisition-related contingent consideration$— $— $102,000 $102,000 
Total liabilities$— $— $102,000 $102,000 
Fair Value Measurement at Reporting Date Using:
Quoted Prices in
Active Markets for
Identical Liabilities
(Level 1)		Significant Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Balance as of
December 31, 2025
Acquisition-related contingent consideration$— $— $121,000 $121,000 
Total liabilities$— $— $121,000 $121,000 
The following is a roll forward of our Level 3 liabilities (in thousands):
2026
Balance at January 1, $121,000 
Contingent consideration earned during the period but not yet paid(10,499)
Payments made during the period(10,832)
Change in fair value of contingent consideration2,331 
Balance at June 30,$102,000 
The initial fair value of the contingent consideration was determined on the date of acquisition, June 1, 2016, using an income approach based on projected future net sales of ICLUSIG in the European Union and other countries for the approved third line treatment over 18 years, and discounted to present value at a rate of 10%. The fair value of the contingent consideration is remeasured each reporting period, with changes in fair value recorded in the condensed consolidated statements of operations. The valuation inputs utilized to estimate the fair value of the contingent consideration as of June 30, 2026 and December 31, 2025 included a discount rate of 10%, updated projections of future net sales of ICLUSIG in the European Union and other countries for the approved third line treatment, and related applicable royalty rates. The change in fair value of the contingent consideration during the three and six months ended June 30, 2026 was due primarily to updated projections of future net sales of ICLUSIG, including the impacts from fluctuations in foreign currency exchange rates, and the passage of time.
We generally make payments to Takeda Pharmaceutical Company Limited quarterly based on the royalties earned in the previous quarter. As of June 30, 2026 and December 31, 2025, contingent consideration earned but not yet paid was $10.5 million and $12.1 million, respectively, and was included in accrued and other current liabilities.