Over the 90-day window ending December 12, 2025, Adaptive Biotechnologies's three dominant insider ownership positions are held by CEO And Chairman Chad M Robins (2.71Mn shares), Chief Scientific Officer Harlan S Robins (1.23Mn shares), Chief Commercial Officer And Mrd Susan Bobulsky (347.24K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| David E. Goel | 12,310,594 | 17 Feb, 2021 | |
| Chad M Robins | CEO And Chairman | 2,709,241 | 01 Dec, 2025 |
| Harlan S Robins | Chief Scientific Officer | 1,232,312 | 05 Dec, 2025 |
| 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 | 332,846 | 06 Mar, 2025 |
| 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 | |
| Nancy Louise Hill | EVP And Operations & Program Mana | 10,000 | 21 Jan, 2021 |
| Jyoti Palaniappan | SVP And Diagnostics And T Detect | 9,158 | 19 Jul, 2021 |
| Eric Dobmeier | 1,504 | 17 Feb, 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 |
|---|---|---|---|---|---|---|---|---|
| 10 Dec, 2025 | Robert Hershberg | Common Stock | D | 22,968 | $16.00 | 46,722 | D | S |
| 04 Dec, 2025 | Sharon Benzeno | Common Stock | A | 4,290 | $12.14 | 301,081 | D | M |
| 04 Dec, 2025 | Sharon Benzeno | Common Stock | A | 4,157 | $8.46 | 305,238 | D | M |
| 04 Dec, 2025 | Sharon Benzeno | Common Stock | A | 4,157 | $3.99 | 309,395 | D | M |
| 04 Dec, 2025 | Sharon Benzeno | Common Stock | D | 12,604 | $16.85 | 296,791 | D | S |
| 03 Dec, 2025 | Harlan S Robins | Common Stock | D | 27,212 | $18.61 | 1,242,312 | D | S |
| 04 Dec, 2025 | Harlan S Robins | Common Stock | D | 10,000 | $16.61 | 1,232,312 | D | S |
| 28 Nov, 2025 | Kyle Piskel | Common Stock | A | 11,980 | $6.55 | 281,323 | D | M |
| 28 Nov, 2025 | Kyle Piskel | Common Stock | A | 3,750 | $7.80 | 285,073 | D | M |
| 28 Nov, 2025 | Kyle Piskel | Common Stock | A | 94,384 | $12.14 | 379,457 | D | M |
| 28 Nov, 2025 | Kyle Piskel | Common Stock | D | 162,820 | $19.50 | 216,637 | D | S |
| 26 Nov, 2025 | Chad M Robins | Common Stock | D | 35,736 | $19.68 | 2,834,239 | D | S |
| 01 Dec, 2025 | Chad M Robins | Common Stock | D | 124,998 | $18.94 | 2,709,241 | D | S |
| 20 Nov, 2025 | Sharon Benzeno | Common Stock | A | 133,032 | $8.46 | 525,755 | D | M |
| 20 Nov, 2025 | Sharon Benzeno | Common Stock | A | 68,961 | $12.14 | 594,716 | D | M |
| 20 Nov, 2025 | Sharon Benzeno | Common Stock | D | 297,925 | $16.54 | 296,791 | D | S |
| 21 Nov, 2025 | Sharon Benzeno | Common Stock | A | 834 | $6.27 | 297,625 | D | M |
| 21 Nov, 2025 | Sharon Benzeno | Common Stock | A | 20,834 | $6.55 | 318,459 | D | M |
| 21 Nov, 2025 | Sharon Benzeno | Common Stock | A | 49,480 | $6.55 | 367,939 | D | M |
| 21 Nov, 2025 | Sharon Benzeno | Common Stock | A | 34,375 | $7.27 | 402,314 | D | M |