ADPT
−$430.7K
30,593 sh @ $14
ADPT
Adaptive Biotechnologies Corp
SEC CIK 1478320
$17.53
+12.1% · 90 days
90-day buys
$0
0 open-market
90-day sells
$9.69M
35 open-market
Net insider flow
−$9.69M
Net selling
Filings shown
273
Most recent
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At a glance
Over the last 90 days, insiders at ADPT have sold a net $9.69M of stock (0 open-market buys vs 35 sells).
Largest recent trade: Robins Chad M sold $4.57M of ADPT, trimming their stake 13%.
Most active filer: Robins Chad M, with 156 transactions among the recent filings shown.
Insider transaction history
Form 4 filings for ADPT, newest firstADPT
−$544.4K
41,338 sh @ $13
ADPT
−$831.1K
63,103 sh @ $13
ADPT
−$245.9K
18,672 sh @ $13
ADPT
−$1.85M
140,666 sh @ $13
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ADPT
−$4.34M
329,600 sh @ $13
ADPT
−$1.85M
140,567 sh @ $13
ADPT
−$4.34M
329,600 sh @ $13
ADPT
Griffin Michelle Renee sold $735.1K of ADPT, trimming their stake 76%.
−$735.1K
48,044 sh @ $15
ADPT
−$785.4K
50,703 sh @ $15
ADPT
−$38.4K
2,380 sh @ $16
ADPT
−$4.57M
289,024 sh @ $16
ADPT
−$2.92M
182,891 sh @ $16
ADPT
−$2.3M
124,998 sh @ $18
ADPT
−$1.95M
124,998 sh @ $16
ADPT
−$2.37M
124,998 sh @ $19
ADPT
−$703.3K
35,736 sh @ $20
ADPT
−$28K
1,867 sh @ $15
ADPT
−$18K
1,237 sh @ $15
ADPT
−$1.27M
86,161 sh @ $15
ADPT
Griffin Michelle Renee sold $260.9K of ADPT, trimming their stake 70%.
−$260.9K
36,291 sh @ $7
ADPT
−$780.9K
102,218 sh @ $8
ADPT
Griffin Michelle Renee sold $124.4K of ADPT, trimming their stake 23%.
−$124.4K
15,664 sh @ $8
ADPT
−$566.8K
81,206 sh @ $7
ADPT
−$252.7K
36,145 sh @ $7
ADPT
−$836.5K
99,107 sh @ $8
ADPT
−$1.57M
186,080 sh @ $8
ADPT
−$1.79M
211,160 sh @ $9
ADPT
−$1.34M
158,921 sh @ $8
ADPT
−$846.4K
100,287 sh @ $8
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About ADPT insider activity
This page tracks every recent Form 4 filed for Adaptive Biotechnologies Corp with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.
The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.
Frequently asked questions
How often is ADPT insider data updated?
Continuously. We read from SEC EDGAR, so new Form 4 filings for Adaptive Biotechnologies Corp usually appear here within minutes of being accepted by the SEC.
What does "net insider flow" mean?
It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.
Why do some rows show grants or option exercises instead of buys?
Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.
Is this investment advice?
No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.