Summary
Updated Aug 31, 2026
Michael W. Rathburn has 2 SEC Form 4 filings on record going back to 2025, most recently on 2 July 2026.
Recent Transactions
2Every recent SEC Form 4 transaction Michael W. Rathburn has reported, most recent first.
- EVERFLOW EASTERN PARTNERS LPM - Option exercise
10.0K shares @ $1.35$14K
- EVERFLOW EASTERN PARTNERS LPM - Option exercise
10.0K shares @ $1.32$13K
Trading Pattern
InsiderAlpha's records for Michael W. Rathburn 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.
Most Active Insiders Right Now
Michael W. Rathburn has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
- Peter A. Feld - $192.29M of QRVO open-market activity in the last 90 days
- Nathan Blecharczyk - $190.48M of ABNB open-market activity in the last 90 days
- John Oyler - $189.61M of ONC open-market activity in the last 90 days
- WBR Holdings LLC - $177.14M of WBI open-market activity in the last 90 days
- WaterBridge Resources LLC - $177.14M of WBI open-market activity in the last 90 days
- David N. Capobianco - $177.14M of WBI open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Michael W. Rathburn?
Michael W. Rathburn is a corporate insider, tracked as Director. InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Michael W. Rathburn last file a Form 4?
The most recent primary Form 4 on record is dated 2 July 2026, one of 2 filings going back to 2025.
Where can I see all of Michael W. Rathburn'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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