Summary
Updated Aug 31, 2026
John M. Heyneman Jr. is Director, 10% Owner of FIRST INTERSTATE BANCSYSTEM INC (FIBK). 6 SEC Form 4 filings on record going back to 2025, most recently on 3 June 2026. Most recent open-market trade: sold $944K of FIBK on 25 November 2025. Lifetime open-market sales: $2.42M.
Recent Transactions
9Every recent SEC Form 4 transaction John M. Heyneman Jr. has reported, most recent first.
Trading Pattern
InsiderAlpha's records for John M. Heyneman Jr. go back to 2025: 6 primary Form 4 filings, an average of 3.0 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 John M. Heyneman Jr. 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.
- Jonathan R. Scott - $4.22M of FIBK open-market activity in the last 12 months
- Susan Scott Heyneman Trust, Susan Heyneman First Interstate Wealth Management Co-Trustees - $1.28M of FIBK open-market activity in the last 12 months
- Julie A. Scott - $540K of FIBK 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 John M. Heyneman Jr.?
John M. Heyneman Jr. is a corporate insider, tracked as Director, 10% Owner of FIRST INTERSTATE BANCSYSTEM INC (FIBK). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has John M. Heyneman Jr. submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has John M. Heyneman Jr. been buying or selling stock?
Recorded transactions: 0 open-market purchases and 4 open-market sales ($2.42M) across all tracked filings.
Where can I see all of John M. Heyneman Jr.'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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