Filings (90d)
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 - $291K in SERA purchases and sales in the last 12 months
- Paul Kearney - $131K in SERA purchases and sales in the last 12 months
- Austin Aerts - $66K in SERA purchases and sales in the last 12 months
- Robert Gardner Harrison - $56K in SERA purchases and sales in the last 12 months
- Benjamin Jackson - $38K in SERA purchases and sales in the last 12 months
- John J. Boniface - $34K in SERA purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
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.
When did Gregory C. Critchfield last file a Form 4?
The most recent primary Form 4 on record is dated 14 July 2026, one of 2 filings going back to 2025.
