Harlan Robins plan to sell securities of Adaptive Biotechnologies Corporation under Form 144

Harlan Robins filed Form 144 to notify SEC of plan to sell 10000 units of Adaptive Biotechnologies Corporation securities around 2026-04-08, with aggregate market value of $148,400.00. The total outstanding units is 153981561.0. The amount planned to be sold represents 0.01% of total outstanding units; Recent transactions in past 3 months include: On 02/02/2026, sold 2395 units for $44130.99; On 03/02/2026, sold 10000 units for $157239.00; On 02/02/2026, sold 32273 units for $600732.85; On 02/03/2026, sold 515 units for $9960.00; On 02/03/2026, sold 7605 units for $144288.14; On 03/03/2026, sold 14233 units for $235073.65;