Summary
Updated Aug 31, 2026
Michael Shetzline is SVP, CMO, Head-Res&Drug of IRONWOOD PHARMACEUTICALS INC (IRWD). 2 SEC Form 4 filings on record, most recently on 12 March 2026. Most recent open-market trade: sold $62K of IRWD on 25 February 2026. Lifetime open-market sales: $122K.
Recent Transactions
3Every recent SEC Form 4 transaction Michael Shetzline has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Michael Shetzline go back to 2026: 2 primary Form 4 filings, an average of 2.0 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 Michael Shetzline 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.
- Alexander J. Denner - $20.53M of IRWD open-market activity in the last 12 months
- Ronald Silver - $831K of IRWD open-market activity in the last 12 months
- Thomas A. McCourt - $740K of IRWD open-market activity in the last 12 months
- Minardo John - $136K of IRWD open-market activity in the last 12 months
- Tammi L. Gaskins - $100K of IRWD open-market activity in the last 12 months
- Gregory S. Martini - $82K of IRWD 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 Shetzline?
Michael Shetzline is a corporate insider, tracked as SVP, CMO, Head-Res&Drug of IRONWOOD PHARMACEUTICALS INC (IRWD). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Michael Shetzline last file a Form 4?
The most recent primary Form 4 on record is dated 12 March 2026, one of 2 filings going back to 2026.
Has Michael Shetzline been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($122K) across all tracked filings.
Where can I see all of Michael Shetzline'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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