Summary
Updated Aug 31, 2026
Richard J. Benjamin is Chief Medical Officer of CERUS CORP (CERS). 3 SEC Form 4 filings on record, most recently on 16 March 2026. Most recent open-market trade: sold $169K of CERS on 16 March 2026. Lifetime open-market sales: $420K.
Recent Transactions
6Every recent SEC Form 4 transaction Richard J. Benjamin has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Richard J. Benjamin go back to 2026: 3 primary Form 4 filings, an average of 3.0 per year. 6 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Richard J. Benjamin 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.
- William Mariner Greenman - $1.20M of CERS open-market activity in the last 12 months
- Vivek K. Jayaraman - $619K of CERS open-market activity in the last 12 months
- Chrystal Jensen - $504K of CERS open-market activity in the last 12 months
- Kevin Dennis Green - $480K of CERS open-market activity in the last 12 months
- Eric Bjerkholt - $53K of CERS 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 Richard J. Benjamin?
Richard J. Benjamin is a corporate insider, tracked as Chief Medical Officer of CERUS CORP (CERS). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Richard J. Benjamin last file a Form 4?
The most recent primary Form 4 on record is dated 16 March 2026, one of 3 filings going back to 2026.
Has Richard J. Benjamin been buying or selling stock?
Recorded transactions: 0 open-market purchases and 4 open-market sales ($420K) across all tracked filings.
Where can I see all of Richard J. Benjamin'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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