SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

3 Months Ended

Mar. 31, 2026

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The accompanying condensed financial statements and related notes to the condensed financial statements should be read in conjunction with the audited financial statements and the related notes thereto for the year ended December 31, 2025 included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 26, 2026. There have been no material changes to the summary of significant accounting policies as disclosed in that filing.

These interim financial statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and include all adjustments consisting of normal recurring adjustments that management believes are necessary for a fair presentation of the periods presented and are not necessarily indicative of results expected for the full fiscal year or for any subsequent interim period.

Marketable Securities, Available for Sale

All marketable securities have been classified as “available-for-sale” and are carried at fair value, based upon quoted market prices. The Company considers its available-for-sale portfolio as available for use in current operations. Accordingly, the Company classifies its investments as short-term marketable securities, even though the stated maturity date may be one year or more beyond the current balance sheet date. Unrealized gains and losses, net of any related tax effects, are excluded from earnings and are included in other comprehensive income (loss) and reported as a separate component of stockholders’ equity until realized. Interest income, realized gains and losses, and declines in value judged to be other than temporary, if any, on available-for-sale securities are included in other income. The cost of securities sold is based on the specific-identification method. The amortized cost of securities is adjusted for amortization of premiums and accretion of discounts to maturity. In accordance with the Company’s investment policy, management invests in money market funds, corporate debt securities, commercial paper, asset-backed securities and government securities. The Company has not experienced any realized losses on its deposits of cash, cash equivalents, and marketable securities since inception.

The following tables summarize the Company’s financial assets measured at fair value on a recurring basis by level within the fair value hierarchy (in thousands):

	As of March 31, 2026
	Fair Value	Amortized		Unrealized		Unrealized		Fair Market
	Hierarchy	Cost Basis		Gains		Losses		Value
Cash equivalents:
Money market funds	Level 1	$	32,999	$	—	$	—	$	32,999
Marketable securities, available for sale:
Asset-backed securities	Level 2		56,984		17		(24)		56,977
Corporate debt securities	Level 2		181,820		44		(221)		181,643
Commercial paper	Level 2		20,209		2		(36)		20,175
U.S. government treasury and agency securities	Level 2		207,590		62		(96)		207,556
Total		$	499,602	$	125	$	(377)	$	499,350

	As of December 31, 2025
	Fair Value	Amortized		Unrealized		Unrealized		Fair Market
	Hierarchy	Cost Basis		Gains		Losses		Value
Cash equivalents:
Money market funds	Level 1	$	60,965	$	—	$	—	$	60,965
Marketable securities, available for sale:
Asset-backed securities	Level 2		55,426		78		—		55,504
Corporate debt securities	Level 2		193,479		270		(5)		193,744
Commercial paper	Level 2		10,424		7		—		10,431
U.S. government treasury and agency securities	Level 2		208,955		327		—		209,282
Total		$	529,249	$	682	$	(5)	$	529,926

The Company’s money market funds are classified as Level 1 because they are valued using quoted market prices. Investments in asset-backed securities, corporate debt securities, commercial paper and U.S. government treasury and agency securities, and supranational and sovereign government securities have been classified as Level 2 as they are valued using quoted prices in less active markets or other directly or indirectly observable inputs. Fair values of asset-backed securities, corporate debt securities, commercial paper, and U.S. government treasury and agency securities were derived based on input of market prices from multiple sources at each reporting period. With regard to commercial paper, all of the securities had high credit ratings and one year or less to maturity; therefore, fair value was derived from accretion of purchase price to face value over the term of maturity or quoted market prices for similar instruments if available. There were no transfers of financial assets between Level 1, Level 2, or Level 3, during the periods presented. As of March 31, 2026, the remaining contractual maturities of $439.1 million of marketable securities were less than one year and $27.5 million of marketable securities were between 1 and 2 years.

The Company periodically reviews its portfolio of debt securities to determine if any investment is impaired due to credit loss or other potential valuation concerns. For debt securities where the fair value of the investment is less than the amortized cost basis, the Company has assessed at the individual security level for various quantitative factors including, but not limited to, the nature of the investments, changes in credit ratings, interest rate fluctuations, industry analyst reports, and the severity of impairment. Unrealized losses on marketable securities at March 31, 2026 were primarily due to changes in interest rates, including market credit spreads, and not due to increased credit risks associated with specific securities.

Accounting Standards Not Yet Adopted

In November 2024, the FASB issued Accounting Standards Update (ASU) 2024-03, Income Statement–Reporting Comprehensive Income–Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. This ASU is expected to improve the disclosures about a public business entity’s expenses and address

requests from investors for more detailed information about the types of expenses (including purchases of inventory, employee compensation, depreciation, amortization, and depletion) in commonly presented expense captions (such as cost of sales, SG&A, and research and development). This ASU is effective beginning with the Company’s 2027 fiscal year annual reporting period and interim periods thereafter, with early adoption permitted. The Company is currently evaluating the impact that the adoption of this standard will have on its financial statements.

In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow Scope Improvements. This ASU is expected to improve the navigability of the required interim disclosures, clarify when that guidance is applicable, and provide additional guidance on what disclosures should be included in interim reporting periods. It also adds a principle requiring entities to disclose events since the end of the last annual reporting period that have a material impact on the entity. This ASU is effective for interim reporting periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact that the adoption of this standard will have on its interim financial statements.