Summary
Updated Aug 31, 2026
Paul Grinberg is Chief Executive Officer, Director of Mountain Lake Acquisition Corp. (MLAC). 8 SEC Form 4 filings on record going back to 2024, most recently on 15 June 2026. Most recent open-market trade: bought $5.10M of MLAAU on 30 January 2026. Lifetime open-market purchases: $5.10M. Lifetime open-market sales: $2.04M.
Recent Transactions
6Every recent SEC Form 4 transaction Paul Grinberg has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Paul Grinberg go back to 2024: 8 primary Form 4 filings, an average of 2.7 per year. The typical open-market purchase is $1.70M (3 buys totaling $5.10M). The largest single buy on record is $5.10M of MLAAU in 2026. Sales side: 1 recorded sale totaling $2.04M, so the filing history runs buy-heavy by dollar value. 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 have reported open-market trades at the same companies as Paul Grinberg. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Jaime Vieser - of MLAC open-market activity on record
- Douglas Horlick - of MLAC open-market activity on record
- Mountain Lake Acquisition Sponsor LLC - of MLAC open-market activity on record
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Paul Grinberg?
Paul Grinberg is a corporate insider, tracked as Chief Executive Officer, Director of Mountain Lake Acquisition Corp. (MLAC). InsiderAlpha holds 8 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Paul Grinberg submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Paul Grinberg been buying or selling stock?
Recorded transactions: 3 open-market purchases ($5.10M) and 1 open-market sale ($2.04M) across all tracked filings.
Where can I see all of Paul Grinberg'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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