Summary
Updated Aug 31, 2026
Katey Einterz Owen is Director of Adaptive Biotechnologies Corp (ADPT). 2 SEC Form 4 filings on record, most recently on 28 August 2026. Most recent open-market trade: sold $250K of ADPT on 28 August 2026. Lifetime open-market sales: $250K.
Recent Transactions
2Every recent SEC Form 4 transaction Katey Einterz Owen has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Katey Einterz Owen go back to 2026: 2 primary Form 4 filings, an average of 2.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Katey Einterz Owen files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Chad M. Robins - $37.85M of ADPT open-market activity in the last 12 months
- Harlan S. Robins - $29.48M of ADPT open-market activity in the last 12 months
- Sharon Benzeno - $14.48M of ADPT open-market activity in the last 12 months
- Julie Rubinstein - $13.37M of ADPT open-market activity in the last 12 months
- Francis Lo - $8.00M of ADPT open-market activity in the last 12 months
- Kyle Piskel - $3.58M of ADPT open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Katey Einterz Owen?
Katey Einterz Owen is a corporate insider, tracked as Director of Adaptive Biotechnologies Corp (ADPT). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Katey Einterz Owen submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Katey Einterz Owen been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($250K) across all tracked filings.
Where can I see all of Katey Einterz Owen's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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