Summary
Updated Aug 30, 2026
John J. Boniface is Chief Scientific Officer of SERA PROGNOSTICS, INC. (SERA). 8 SEC Form 4 filings on record going back to 2024, most recently on 6 May 2026. Most recent open-market trade: sold $3K of SERA on 13 March 2026. Lifetime open-market sales: $91K.
Recent Transactions
7Every recent SEC Form 4 transaction John J. Boniface 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 John J. Boniface 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
- Benjamin Jackson - $37K of SERA open-market activity in the last 12 months
- Sandra Aj Lawrence - $16K 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 John J. Boniface?
John J. Boniface is a corporate insider, tracked as Chief Scientific Officer of SERA PROGNOSTICS, INC. (SERA). InsiderAlpha holds 8 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did John J. Boniface last file a Form 4?
The most recent primary Form 4 on record is dated 6 May 2026, one of 8 filings going back to 2024.
Has John J. Boniface been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($91K) across all tracked filings.
Where can I see all of John J. Boniface'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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