Summary
Updated Aug 31, 2026
Mark Buffington has 6 SEC Form 4 filings on record going back to 2024, most recently on 16 July 2026. Lifetime open-market purchases: $350K.
Recent Transactions
6Every recent SEC Form 4 transaction Mark Buffington has reported, most recent first.
- BIP Ventures Evergreen BDCP - Open-market purchase
1.4K shares @ $34.61$50K
- BIP Ventures Evergreen BDCP - Open-market purchase
1.5K shares @ $33.36$50K
- BIP Ventures Evergreen BDCP - Open-market purchase
1.4K shares @ $34.51$50K
- BIP Ventures Evergreen BDCP - Open-market purchase
1.5K shares @ $33.61$50K
- BIP Ventures Evergreen BDCP - Open-market purchase
1.5K shares @ $33.16$50K
- BIP Ventures Evergreen BDCP - Open-market purchase
3.4K shares @ $29.54$100K
Trading Pattern
InsiderAlpha's records for Mark Buffington go back to 2024: 6 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $58K (6 buys totaling $350K). 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
Mark Buffington has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
- Thomas J. Nimbley - $87.92M of PBF open-market activity in the last 90 days
- John Colgrove - $87.13M of P open-market activity in the last 90 days
- David Zaslav - $86.59M of WBD open-market activity in the last 90 days
- Alexander C. Karp - $86.06M of PLTR open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $7.98B of SVRE open-market activity in the last 90 days
- Magnetar Financial LLC - $6.65B of CRWV 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 Mark Buffington?
Mark Buffington is a corporate insider, tracked as Chief Executive Officer. InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Mark Buffington last file a Form 4?
The most recent primary Form 4 on record is dated 16 July 2026, one of 6 filings going back to 2024.
Has Mark Buffington been buying or selling stock?
Recorded transactions: 6 open-market purchases ($350K) and 0 open-market sales across all tracked filings.
Where can I see all of Mark Buffington'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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