Summary
Updated Aug 31, 2026
Grant Yonehiro is Chief Operating Officer of Bolt Biotherapeutics, Inc. (BOLT). 3 SEC Form 4 filings on record going back to 2025, most recently on 4 February 2026.
Recent Transactions
1Every recent SEC Form 4 transaction Grant Yonehiro has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Grant Yonehiro go back to 2025: 3 primary Form 4 filings, an average of 1.5 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Grant Yonehiro 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.
- Sarah Nemec - $1K of BOLT open-market activity in the last 12 months
- William P. Quinn - $1K of BOLT 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 Grant Yonehiro?
Grant Yonehiro is a corporate insider, tracked as Chief Operating Officer of Bolt Biotherapeutics, Inc. (BOLT). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Grant Yonehiro last file a Form 4?
The most recent primary Form 4 on record is dated 4 February 2026, one of 3 filings going back to 2025.
Where can I see all of Grant Yonehiro'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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