Summary
Updated Aug 31, 2026
Mark J. Rubash is Director of iRhythm Holdings, Inc. (IRTC). 2 SEC Form 4 filings on record, most recently on 28 May 2025.
Recent Transactions
2Every recent SEC Form 4 transaction Mark J. Rubash has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Mark J. Rubash go back to 2025: 2 primary Form 4 filings, an average of 1.0 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 Mark J. Rubash 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.
- Gary S. Guthart - $48.79M of ISRG open-market activity in the last 12 months
- David J. Rosa - $13.41M of ISRG open-market activity in the last 12 months
- Quentin S. Blackford - $11.15M of IRTC open-market activity in the last 12 months
- Myriam Curet - $8.38M of ISRG open-market activity in the last 12 months
- Henry L. Charlton - $7.96M of ISRG open-market activity in the last 12 months
- Daniel G. Wilson - $3.80M of IRTC 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 Mark J. Rubash?
Mark J. Rubash is a corporate insider, tracked as Director of iRhythm Holdings, Inc. (IRTC). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Mark J. Rubash last file a Form 4?
The most recent primary Form 4 on record is dated 28 May 2025, one of 2 filings going back to 2025.
Where can I see all of Mark J. Rubash'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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