Summary
Updated Aug 31, 2026
Gregory C. Critchfield files SEC Form 4 reports at SERA PROGNOSTICS, INC. (SERA). 2 SEC Form 4 filings on record going back to 2025, most recently on 14 July 2026.
Recent Transactions
3Every recent SEC Form 4 transaction Gregory C. Critchfield 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 Gregory C. Critchfield 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.
- Zhenya Lindgardt - $313K of SERA open-market activity in the last 12 months
- Paul Kearney - $140K of SERA open-market activity in the last 12 months
- Austin Aerts - $85K of SERA open-market activity in the last 12 months
- Robert Gardner Harrison - $70K of SERA open-market activity in the last 12 months
- John J. Boniface - $38K of SERA open-market activity in the last 12 months
- Benjamin Jackson - $37K of SERA 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 Gregory C. Critchfield?
Gregory C. Critchfield is a corporate insider of SERA PROGNOSTICS, INC. (SERA). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Gregory C. Critchfield submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Gregory C. Critchfield'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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