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

Chad Robins filed Form 144 to notify SEC of plan to sell 83332 units of Adaptive Biotechnologies Corporation securities around 2026-04-06, with aggregate market value of $1,173,314.56. The total outstanding units is 153981561.0. The amount planned to be sold represents 0.05% of total outstanding units; Recent transactions in past 3 months include: On 01/05/2026, sold 41666 units for $649206.28; On 03/02/2026, sold 41666 units for $653647.87; On 01/05/2026, sold 41666 units for $641710.57; On 02/02/2026, sold 41666 units for $762950.29; On 03/02/2026, sold 41666 units for $660993.59; On 02/02/2026, sold 41666 units for $774225.11; On 01/05/2026, sold 41666 units for $658068.64; On 02/02/2026, sold 41666 units for $767821.05; On 02/27/2026, sold 99225 units for $1589941.71; On 03/02/2026, sold 41666 units for $655964.50; On 02/27/2026, sold 83666 units for $1334138.04; On 03/02/2026, sold 96323 units for $1546542.82; On 03/02/2026, sold 67703 units for $1056383.45; On 03/03/2026, sold 4452 units for $71681.21; On 03/03/2026, sold 48631 units for $752258.35;