Most Active Insiders Right Now
Henry Posner III has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
- Yousif Mohammed Ali Nasser Al-Nowais - $88.47M of NESR open-market activity in the last 90 days
- Thomas J. Nimbley - $87.92M of PBF 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
- James F. Wirth - $2.86B of IHT open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO 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 Henry Posner III?
Henry Posner III is a corporate insider, tracked as 10% Owner of Power REIT (PW). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Henry Posner III last file a Form 4?
The most recent primary Form 4 on record is dated 10 February 2026, one of 4 filings going back to 2026.
Has Henry Posner III been buying or selling stock?
Recorded transactions: 8 open-market purchases ($108K) and 0 open-market sales across all tracked filings.
How accurate is Henry Posner III's historical track record?
Across 8 tracked purchases, Henry Posner III averaged -11.8% avg 30-day return with a 0% 30-day win rate. InsiderAlpha rates the track record at 1/5 stars.
Where can I see all of Henry Posner III'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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