Summary
Latest filing:
Catherine Madigan is Chief Medical Officer of Hemab Therapeutics Holdings, Inc. (COAG). 1 SEC Form 4 filing on record, dated 4 May 2026.
Trading pattern
InsiderAlpha's records for Catherine Madigan go back to 2026: 1 primary Form 4 filing, an average of 1.0 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Catherine Madigan 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.
- RA CAPITAL MANAGEMENT, L.P. - $55.46M in COAG purchases and sales in the last 12 months
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Frequently asked questions
Who is Catherine Madigan?
Catherine Madigan is a corporate insider, tracked as Chief Medical Officer of Hemab Therapeutics Holdings, Inc. (COAG). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Catherine Madigan last file a Form 4?
The only primary Form 4 on record is dated 4 May 2026.