Adaptive Biotechnologies Corp

We expect our current deferred revenue to be recognized as revenue within 12 months. We expect the majority of our non-current deferred revenue to be recognized as revenue over a period of approximately three years from March 31, 2026. This period of time represents an estimate of the ongoing sample testing for our customers' therapeutic development efforts.

Changes in deferred revenue during the three months ended March 31, 2026 were as follows (in thousands):

During the three months ended March 31, 2026,$8.2 million was recognized as revenue that was included in the deferred revenue balance at December 31, 2025.

5. Fair Value Measurements

The following tables set forth the fair values of financial assets as of March 31, 2026 and December 31, 2025 that were measured at fair value on a recurring basis (in thousands):

Level 1 securities include highly liquid money market funds, for which we measure the fair value based on quoted prices in active markets for identical assets or liabilities. Level 2 securities consist of U.S. government treasury and agency securities, corporate bonds and commercial paper, and are valued based on recent trades of securities in inactive markets or on quoted market prices of similar instruments and other significant inputs derived from or corroborated by observable market data. Of the March 31, 2026 Level 2 commercial paper balance, $5.0 million is recorded as cash and cash equivalents on our unaudited condensed consolidated balance sheet.

6. Investments

Available-for-sale investments consisted of the following as of March 31, 2026 and December 31, 2025 (in thousands):

All the U.S. government treasury and agency securities, corporate bonds and commercial paper designated as short-term marketable securities have an effective maturity date that is equal to or less than one year from the respective condensed consolidated balance sheet date. Those that are designated as long-term marketable securities have an effective maturity date that is more than one year from the respective condensed consolidated balance sheet date.

Accrued interest receivable is excluded from the amortized cost and estimated fair value of our marketable securities. Accrued interest receivable of$1.6 million and$1.5 million was presented separately within the prepaid expenses and other current assets balance on the unaudited condensed consolidated balance sheet as of March 31, 2026 and on the condensed consolidated balance sheet as of December 31, 2025, respectively.

The following table presents the gross unrealized holding losses and fair values for investments in an unrealized loss position, and the length of time individual securities have been in a continuous loss position, as of March 31, 2026 (in thousands):

We periodically review our available-for-sale securities to assess for credit impairment. Some of the factors considered in assessing impairment include the extent to which the fair value is less than the amortized cost basis, adverse conditions related to the security, an industry or geographic area, changes to security ratings or sector credit ratings and other relevant market data.

As of March 31, 2026, we did not intend, nor were we more likely than not to be required, to sell our available-for-sale investments before the recovery of their amortized cost basis, which may be maturity. Based on our assessment, we concluded all impairment as of March 31, 2026 to be due to factors other than credit loss, such as changes in interest rates. A credit allowance was not recognized and the impairment of our available-for-sale securities was recorded in other comprehensive loss.