March 11, 2026 · Form 4 insider transaction
ROBINS HARLAN S sold 329,600 shares of ADAPTIVE BIOTECHNOLOGIES COR at $13.17 per share, a transaction worth $4.34M. The trade was recorded as open-market sale and disclosed on an SEC Form 4, filed 2 days after the transaction.
This transaction represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of performance share units. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.