According to recent filings covering the 90 days ending January 10, 2026, the three most significant insider holders at Adaptive Biotechnologies are Ceo And Chairman Chad M Robins (2.58Mn shares), Chief Scientific Officer Harlan S Robins (1.22Mn shares), President And Coo Julie Rubinstein (588.25K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Chad M Robins | Ceo And Chairman | 2,584,243 | 07 Jan, 2026 |
| Harlan S Robins | Chief Scientific Officer | 1,222,312 | 08 Jan, 2026 |
| Julie Rubinstein | President And Coo | 588,249 | 06 Mar, 2025 |
| Tycho Peterson | Chief Financial Officer | 531,553 | 06 Mar, 2024 |
| Susan Bobulsky | Chief Commercial Officer And Mrd | 347,238 | 06 Mar, 2025 |
| Francis Lo | Chief People Officer | 315,978 | 06 Jan, 2026 |
| Sharon Benzeno | Chief Commercial Ofc Imm Med | 296,791 | 08 Dec, 2025 |
| Peter M Neupert | 224,690 | 12 Mar, 2025 | |
| Kyle Piskel | Chief Financial Officer | 216,637 | 02 Dec, 2025 |
| Nitin Sood | Chief Commercial Officer And Mrd | 214,808 | 08 Aug, 2023 |
| R Mark Adams | Chief Operating Officer | 175,361 | 12 Apr, 2023 |
| Stacy L Taylor | Svp And General Counsel | 139,365 | 23 Aug, 2024 |
| Katey Einterz Owen | 72,629 | 06 Mar, 2025 | |
| Michael J Pellini | 69,690 | 06 Mar, 2025 | |
| Robert Hershberg | 46,722 | 12 Dec, 2025 | |
| Henning Thorsen | Svp And Commercial Operations | 29,061 | 19 May, 2021 |
| Leslie Trigg | 25,907 | 08 Mar, 2023 | |
| Kevin T Conroy | 22,968 | 08 Mar, 2023 | |
| Chad M Cohen | Chief Financial Officer | 21,604 | 23 Dec, 2021 |
| Lance Baldo | Chief Medical Officer | 17,171 | 10 Mar, 2022 |
| Michelle Renee Griffin | 15,394 | 17 Mar, 2025 | |
| Jyoti Palaniappan | Svp And Diagnostics And T Detect | 9,158 | 19 Jul, 2021 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 06 Jan, 2026 | Harlan S Robins | Common Stock | D | 10,000 | $16.44 | 1,222,312 | D | S |
| 05 Jan, 2026 | Chad M Robins | Common Stock | D | 124,998 | $15.59 | 2,584,243 | D | S |
| 02 Jan, 2026 | Francis Lo | Common Stock | A | 3,125 | $3.99 | 319,103 | D | M |
| 02 Jan, 2026 | Francis Lo | Common Stock | D | 3,125 | $16.08 | 315,978 | D | S |
| 22 Dec, 2025 | Francis Lo | Common Stock | D | 4,394 | $17.50 | 315,978 | D | S |
| 22 Dec, 2025 | Francis Lo | Common Stock | A | 1,100 | $7.80 | 317,078 | D | M |
| 22 Dec, 2025 | Francis Lo | Common Stock | A | 1,100 | $8.46 | 318,178 | D | M |
| 22 Dec, 2025 | Francis Lo | Common Stock | D | 4,394 | $17.50 | 315,978 | D | S |
| 22 Dec, 2025 | Francis Lo | Common Stock | A | 1,100 | $3.99 | 320,372 | D | M |
| 22 Dec, 2025 | Francis Lo | Common Stock | A | 2,194 | $3.99 | 320,372 | D | M |
| 22 Dec, 2025 | Francis Lo | Common Stock | A | 1,100 | $7.80 | 317,078 | D | M |
| 22 Dec, 2025 | Francis Lo | Common Stock | A | 2,194 | $8.46 | 319,272 | D | M |
| 15 Dec, 2025 | Francis Lo | Common Stock | A | 39,849 | $3.99 | 429,868 | D | M |
| 15 Dec, 2025 | Francis Lo | Common Stock | A | 19,423 | $8.46 | 390,019 | D | M |
| 15 Dec, 2025 | Francis Lo | Common Stock | D | 113,890 | $15.57 | 315,978 | D | S |
| 15 Dec, 2025 | Francis Lo | Common Stock | A | 37,750 | $7.80 | 370,596 | D | M |
| 10 Dec, 2025 | Robert Hershberg | Common Stock | D | 22,968 | $16.00 | 46,722 | D | S |
| 10 Dec, 2025 | Robert Hershberg | - | - | 46,722 | D | |||
| 04 Dec, 2025 | Harlan S Robins | Common Stock | D | 10,000 | $16.61 | 1,232,312 | D | S |
| 04 Dec, 2025 | Sharon Benzeno | - | - | 305,238 | D |