Over the past 12 months, Adaptive Biotechnologies insiders sold $126.03 million of stock on the open market (6.81Mn shares) and made no open-market purchases.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Chad M Robins | Ceo And Chairman | 2,180,518 | 0 | 2,180,518 | 36.9% | 19 Aug, 2026 |
| 2 | Harlan S Robins | Chief Scientific Officer | 812,058 | 0 | 812,058 | 13.7% | 23 Jul, 2026 |
| 3 | Tycho Peterson | Chief Financial Officer | 531,553 | 0 | 531,553 | 9.0% | 06 Mar, 2024 |
| 4 | Susan Bobulsky | Chief Commercial Officer, Mrd | 389,350 | 0 | 389,350 | 6.6% | 08 Oct, 2026 |
| 5 | Julie Rubinstein | President And Coo | 377,802 | 0 | 377,802 | 6.4% | 03 Nov, 2026 |
| 6 | Kyle Piskel | Chief Financial Officer | 256,725 | 0 | 256,725 | 4.3% | 20 May, 2026 |
| 7 | Sharon Benzeno | Chief Commercial Ofc Imm Med | 221,278 | 0 | 221,278 | 3.7% | 30 Jun, 2026 |
| 8 | Francis Lo | Chief People Officer | 220,867 | 0 | 220,867 | 3.7% | 05 Oct, 2026 |
| 9 | Nitin Sood | Chief Commercial Officer, Mrd | 214,808 | 0 | 214,808 | 3.6% | 08 Aug, 2023 |
| 10 | R Mark Adams | Chief Operating Officer | 175,361 | 0 | 175,361 | 3.0% | 12 Apr, 2023 |
| 11 | Stacy L Taylor | Svp And General Counsel | 139,365 | 0 | 139,365 | 2.4% | 23 Aug, 2024 |
| 12 | Peter M Neupert | Director | 130,625 | 0 | 130,625 | 2.2% | 19 Aug, 2026 |
| 13 | Michael J Pellini | Director | 69,690 | 0 | 69,690 | 1.2% | 06 Mar, 2025 |
| 14 | Katey Einterz Owen | Director | 66,100 | 0 | 66,100 | 1.1% | 02 Sep, 2026 |
| 15 | Robert Hershberg | Director | 46,683 | 0 | 46,683 | 0.8% | 20 Aug, 2026 |
| 16 | Leslie Trigg | Director | 25,907 | 0 | 25,907 | 0.4% | 08 Mar, 2023 |
| 17 | Kevin T Conroy | Director | 22,968 | 0 | 22,968 | 0.4% | 08 Mar, 2023 |
| 18 | Lance Baldo | Chief Medical Officer | 17,171 | 0 | 17,171 | 0.3% | 10 Mar, 2022 |
| 19 | Michelle Renee Griffin | Director | 15,625 | 0 | 15,625 | 0.3% | 29 Jun, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 30 Oct, 2026 | Julie Rubinstein | President And Coo | Acquired M | 11,881 | $12.14 | $144.24K | 389,683 | Direct |
| 30 Oct, 2026 | Julie Rubinstein | President And Coo | Disposed S | 9,486 | $26.55 | $251.85K | 380,197 | Direct |
| 30 Oct, 2026 | Julie Rubinstein | President And Coo | Disposed S | 2,395 | $27.45 | $65.74K | 377,802 | Direct |
| 02 Nov, 2026 | Julie Rubinstein | President And Coo | Acquired M | 11,881 | $12.14 | $144.24K | 389,683 | Direct |
| 02 Nov, 2026 | Julie Rubinstein | President And Coo | Disposed S | 9,296 | $25.23 | $234.54K | 380,387 | Direct |
| 02 Nov, 2026 | Julie Rubinstein | President And Coo | Disposed S | 2,585 | $26.34 | $68.09K | 377,802 | Direct |
| 03 Nov, 2026 | Julie Rubinstein | President And Coo | Acquired M | 11,881 | $12.14 | $144.24K | 389,683 | Direct |
| 03 Nov, 2026 | Julie Rubinstein | President And Coo | Disposed S | 11,881 | $25.98 | $308.67K | 377,802 | Direct |
| 30 Oct, 2026 | Julie Rubinstein | President And Coo | Disposed M | 11,881 | $0.00 | $0 | 118,395 | Direct |
| 02 Nov, 2026 | Julie Rubinstein | President And Coo | Disposed M | 11,881 | $0.00 | $0 | 106,514 | Direct |
| 03 Nov, 2026 | Julie Rubinstein | President And Coo | Disposed M | 11,881 | $0.00 | $0 | 94,633 | Direct |
| 27 Oct, 2026 | Julie Rubinstein | President And Coo | Acquired M | 11,881 | $12.14 | $144.24K | 389,683 | Direct |
| 27 Oct, 2026 | Julie Rubinstein | President And Coo | Disposed S | 3,000 | $26.58 | $79.74K | 386,683 | Direct |
| 27 Oct, 2026 | Julie Rubinstein | President And Coo | Disposed S | 8,881 | $27.53 | $244.49K | 377,802 | Direct |
| 28 Oct, 2026 | Julie Rubinstein | President And Coo | Acquired M | 11,881 | $12.14 | $144.24K | 389,683 | Direct |
| 28 Oct, 2026 | Julie Rubinstein | President And Coo | Disposed S | 11,681 | $28.44 | $332.21K | 378,002 | Direct |
| 28 Oct, 2026 | Julie Rubinstein | President And Coo | Disposed S | 200 | $28.90 | $5.78K | 377,802 | Direct |
| 29 Oct, 2026 | Julie Rubinstein | President And Coo | Acquired M | 11,881 | $12.14 | $144.24K | 389,683 | Direct |
| 29 Oct, 2026 | Julie Rubinstein | President And Coo | Disposed S | 11,881 | $28.27 | $335.88K | 377,802 | Direct |
| 27 Oct, 2026 | Julie Rubinstein | President And Coo | Disposed M | 11,881 | $0.00 | $0 | 154,038 | Direct |