Summary
Updated Aug 31, 2026
Michael Bookman is CHIEF LEGAL OFFICER, SECRETARY of Immuneering Corp (IMRX). 2 SEC Form 4 filings on record going back to 2025, most recently on 5 February 2026. Most recent open-market trade: bought $7K of IMRX on 1 October 2025. Lifetime open-market purchases: $7K.
Recent Transactions
1Every recent SEC Form 4 transaction Michael Bookman has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Michael Bookman go back to 2025: 2 primary Form 4 filings, an average of 1.0 per year. The typical open-market purchase is $7K (1 buy totaling $7K). The largest single buy on record is $7K of IMRX in 2025. 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 Michael Bookman 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.
- Peter Feinberg - $226K of IMRX open-market activity in the last 12 months
- Thomas J. Schall - $101K of IMRX open-market activity in the last 12 months
- Brett Matthew Hall - $36K of IMRX open-market activity in the last 12 months
- Harold Eugene Brakewood - $25K of IMRX open-market activity in the last 12 months
- Leah R. Neufeld - $16K of IMRX open-market activity in the last 12 months
- Benjamin J. Zeskind - $11K of IMRX 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 Michael Bookman?
Michael Bookman is a corporate insider, tracked as CHIEF LEGAL OFFICER, SECRETARY of Immuneering Corp (IMRX). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Michael Bookman last file a Form 4?
The most recent primary Form 4 on record is dated 5 February 2026, one of 2 filings going back to 2025.
Has Michael Bookman been buying or selling stock?
Recorded transactions: 1 open-market purchase ($7K) and 0 open-market sales across all tracked filings.
Where can I see all of Michael Bookman'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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