Summary
Updated Aug 30, 2026
Mary Kay Fenton is Chief Financial Officer of Cullinan Therapeutics, Inc. (CGEM). 4 SEC Form 4 filings on record, most recently on 2 July 2026. Most recent open-market trade: sold $60K of CGEM on 23 February 2026. Lifetime open-market sales: $60K.
Recent Transactions
4Every recent SEC Form 4 transaction Mary Kay Fenton has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Mary Kay Fenton 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.
- Lynx1 Capital Management LP - $13.32M of CGEM open-market activity in the last 12 months
- Jennifer Michaelson - $1.44M of CGEM open-market activity in the last 12 months
- Nadim Ahmed - $518K of CGEM open-market activity in the last 12 months
- Jeffrey Alan Jones - $179K of CGEM open-market activity in the last 12 months
- Jacquelyn L. Sumer - $137K of CGEM 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 Mary Kay Fenton?
Mary Kay Fenton is a corporate insider, tracked as Chief Financial Officer of Cullinan Therapeutics, Inc. (CGEM). InsiderAlpha holds 4 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 Mary Kay Fenton submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Mary Kay Fenton been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($60K) across all tracked filings.
Where can I see all of Mary Kay Fenton'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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