Summary
Updated Aug 31, 2026
Karen Marie Walker is Chief Technology Officer of Kyverna Therapeutics, Inc. (KYTX). 1 SEC Form 4 filing on record, dated 18 December 2025. Most recent open-market trade: sold $293K of KYTX on 18 December 2025. Lifetime open-market sales: $293K.
Recent Transactions
2Every recent SEC Form 4 transaction Karen Marie Walker has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Karen Marie Walker go back to 2025: 1 primary Form 4 filing, an average of 0.5 per year. 3 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Sector
No other insider has filed at Karen Marie Walker's companies, so these are insiders reporting open-market trades at other companies in the same sector.
- RA CAPITAL MANAGEMENT, L.P. - $83.13M of VOR open-market activity in the last 12 months
- Matthew Rabinowitz - $82.72M of NTRA open-market activity in the last 12 months
- Mark T. Bertolini - $82.60M of OSCR open-market activity in the last 12 months
- Frank Torti - $82.04M of ROIV open-market activity in the last 12 months
- ILLUMINA, INC. - $79.85M of GRAL open-market activity in the last 12 months
- Darren M. Black - $77.56M of LFST 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 Karen Marie Walker?
Karen Marie Walker is a corporate insider, tracked as Chief Technology Officer of Kyverna Therapeutics, Inc. (KYTX). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Karen Marie Walker last file a Form 4?
The only primary Form 4 on record is dated 18 December 2025.
Has Karen Marie Walker been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($293K) across all tracked filings.
Where can I see all of Karen Marie Walker'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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