ADPT
Adaptive Biotechnologies Corp · Healthcare · Market cap $3.9B
Insiders sold $38.8M net in the last 90 days ·8 sellers, 0 buyers· 22 of 27 sales under Rule 10b5-1 plans· latest Form 4 filed Oct 21, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$127.5M
reported sales (SEC code S)
Unique Insiders
11
in the rolling window
Latest filing
Oct 21, 2026
RUBINSTEIN JULIE
Adaptive Biotechnologies Corp (ADPT) has 89 SEC Form 4 filings (301 transaction rows) in the rolling window, disclosed by 11 distinct insiders. Most recent filing: Oct 21, 2026.
Inside the rolling window, 11 insiders at Adaptive Biotechnologies Corp reported no open-market purchases and 125 open-market sales totaling $127.5M. The most active filer is President and COO RUBINSTEIN JULIE with 54 filings. Insiders have net sold $59.8M over the trailing 6 months. The most recent open-market filing is a sale of 11,881 shares by President and COO RUBINSTEIN JULIE, dated Oct 19, 2026, worth $286K.
- Industry:Biotechnology
- CEO:Chad Robins
- Employees:624
- HQ:Seattle, WA, US
- IPO:2019-06-27
| Source | |||||||
|---|---|---|---|---|---|---|---|
| President and COO | Sale | 11,881 | $286K | Oct 21 | -3.6% | SEC ↗ | |
| President and COO | Sale | 11,881 | $291K | Oct 21 | -3.6% | SEC ↗ | |
| President and COO | Sale | 11,881 | $302K | Oct 21 | -3.6% | SEC ↗ | |
| President and COO | Sale | 11,881 | $305K | Oct 16 | +1.6% | SEC ↗ | |
| President and COO | Sale | 11,881 | $304K | Oct 16 | +1.6% | SEC ↗ | |
| President and COO | Sale | 11,881 | $288K | Oct 16 | +1.6% | SEC ↗ | |
| President and COO | Sale | 11,881 | $314K | Oct 13 | — | SEC ↗ | |
| President and COO | Sale | 11,881 | $303K | Oct 13 | — | SEC ↗ | |
| President and COO | Sale | 11,881 | $303K | Oct 13 | — | SEC ↗ | |
| President and COO | Sale | 11,881 | $330K | Oct 8 | — | SEC ↗ | |
| President and COO | Sale | 11,881 | $314K | Oct 8 | — | SEC ↗ | |
| President and COO | Sale | 11,881 | $305K | Oct 8 | — | SEC ↗ | |
| Chief Commercial Officer, MRD | Sale | 6,444 | $193K | Oct 8 | — | SEC ↗ | |
RUBINSTEIN JULIEFirst in 5 months | President and COO | Sale | 11,881 | $333K | Oct 6 | — | SEC ↗ |
RUBINSTEIN JULIEFirst in 5 months | President and COO | Sale | 11,881 | $334K | Oct 6 | — | SEC ↗ |
RUBINSTEIN JULIEFirst in 5 months | President and COO | Sale | 11,881 | $347K | Oct 6 | — | SEC ↗ |
| Chief People Officer | Sale | 26,792 | $758K | Oct 6 | — | SEC ↗ | |
| Chief People Officer | Sale | 115,406 | $3.2M | Sep 19 | — | SEC ↗ | |
| Chief Commercial Officer, MRD | Sale | 1,195 | $32K | Sep 17 | — | SEC ↗ | |
OWEN KATEY EINTERZFirst filing | Director | Sale | 9,615 | $250K | Aug 28 | — | SEC ↗ |
| Director | Sale | 30,664 | $748K | Aug 20 | — | SEC ↗ | |
ROBINS CHAD MFirst in 4 months | CEO and Chairman | Sale | 321,324 | $8.1M | Aug 20 | — | SEC ↗ |
ROBINS CHAD MFirst in 4 months | CEO and Chairman | Sale | 278,676 | $6.8M | Aug 20 | — | SEC ↗ |
NEUPERT PETER MFirst filing | Director | Sale | 124,690 | $3.1M | Aug 20 | — | SEC ↗ |
| Chief Commercial Officer, MRD | Sale | 3,000 | $75K | Aug 12 | — | SEC ↗ |
Earnings: last 7 quarters
Congress trading ADPT 1 all-time
- DRep. Ro KhannaPurchase$1,001 - $15,0002022-02-14
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does ADPT have?
Adaptive Biotechnologies Corp (ADPT) has 89 SEC Form 4 filings (301 transaction rows) in the rolling 365-day window, disclosed by 11 distinct insiders. Most recent filing: Oct 21, 2026.
When was the most recent SEC Form 4 filing for ADPT?
The most recent Form 4 filing for ADPT on Tracefour is dated Oct 21, 2026.
Who is the most active insider at ADPT?
The most active SEC Form 4 filer at ADPT in the rolling window is President and COO RUBINSTEIN JULIE, with 54 filings.
What is the net insider flow at ADPT over the last 6 months?
Over the trailing 180 days, insiders at ADPT have net sold $59.8M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at ADPT in the current window?
Inside the rolling window, insiders at ADPT bought $0 and sold $127.5M based on SEC Form 4 filings.
Can I get alerts for ADPT insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Adaptive Biotechnologies Corp (ADPT). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
Adaptive Biotechnologies Corp is in the Healthcare sector.