ADPT
Adaptive Biotechnologies Corp
NASDAQ · Healthcare · Biotechnology · US
$26.64
−5.43%0
Insider buys (3m)
51
Insider sells (3m)
-$29.3M
Net value (3m)
+17.7%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Oct 29, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 11,881 | $28 |
| Oct 29, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 3,000 | $27 |
| Oct 29, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 8,881 | $28 |
| Oct 29, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 200 | $29 |
| Oct 29, 2026 | RUBINSTEIN JULIE · officer: President and COO | M-Exempt | 11,881 | $12 |
| Oct 29, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 11,681 | $28 |
| Oct 26, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 7,381 | $25 |
| Oct 26, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 10,181 | $24 |
| Oct 26, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 3,378 | $26 |
| Oct 26, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 8,503 | $26 |
| Oct 26, 2026 | RUBINSTEIN JULIE · officer: President and COO | M-Exempt | 11,881 | $12 |
| Oct 26, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 1,700 | $25 |
| Oct 26, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 4,500 | $25 |
| Oct 21, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 5,882 | $26 |
| Oct 21, 2026 | RUBINSTEIN JULIE · officer: President and COO | M-Exempt | 11,881 | $12 |
| Oct 21, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 11,881 | $24 |
| Oct 21, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 100 | $25 |
| Oct 21, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 11,781 | $25 |
| Oct 21, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 5,999 | $25 |
| Oct 16, 2026 | RUBINSTEIN JULIE · officer: President and COO | M-Exempt | 11,881 | $12 |
| Oct 16, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 5,100 | $26 |
| Oct 16, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 11,581 | $24 |
| Oct 16, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 6,781 | $26 |
| Oct 16, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 300 | $25 |
| Oct 16, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 11,881 | $26 |
| Oct 13, 2026 | RUBINSTEIN JULIE · officer: President and COO | M-Exempt | 11,881 | $12 |
| Oct 13, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 9,181 | $25 |
| Oct 13, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 11,881 | $26 |
| Oct 13, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 2,700 | $26 |
| Oct 8, 2026 | RUBINSTEIN JULIE · officer: President and COO | Sale | 11,881 | $26 |
Institutional positioning
13F filings over the trailing two quarters
New 104Increased 215Reduced 186Sold out 44
| Filer | Action | Shares | Filed |
|---|---|---|---|
| VIKING GLOBAL INVESTORS LP | Unchanged | 29,993,708 | May 15, 2026 |
| VIKING GLOBAL INVESTORS LP | Unchanged | 29,993,708 | Aug 14, 2026 |
| BlackRock, Inc. | Increased | 15,139,159 | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 13,303,025 | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 6,403,587 | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 6,094,144 | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 5,911,366 | Aug 14, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 5,476,231 | Aug 13, 2026 |
| WESTFIELD CAPITAL MANAGEMENT CO LP | Increased | 5,436,718 | May 11, 2026 |
| D. E. Shaw & Co., Inc. | Increased | 4,625,859 | Aug 14, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 4,491,474 | May 8, 2026 |
| INVESCO LTD. | Increased | 4,450,066 | May 12, 2026 |
| WESTFIELD CAPITAL MANAGEMENT CO LP | Reduced | 4,267,645 | Aug 12, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 3,857,422 | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 3,641,837 | Aug 12, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Oct 29, 2026