Summary
Updated Aug 31, 2026
Peter Mandel is General Counsel of 374Water Inc. (SCWO). 3 SEC Form 4 filings on record going back to 2024, most recently on 28 August 2025. Most recent open-market trade: bought $1K of SCWO on 18 August 2025. Lifetime open-market purchases: $15K. Historical track record: 4/5 stars across 3 tracked purchases.
Recent Transactions
5Every recent SEC Form 4 transaction Peter Mandel has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★★☆ (4/5) |
| Total purchases tracked | 3 |
| Purchases with forward-return data | 3 |
| 30-day win rate | 67% |
| 90-day win rate | 67% |
| Avg 5-day return | +2.85% |
| Avg 30-day return | +16.74% |
| Avg 90-day return | -18.38% |
| Best 30-day return | +41.36% |
Trading Pattern
InsiderAlpha's records for Peter Mandel go back to 2024: 3 primary Form 4 filings, an average of 1.0 per year. The typical open-market purchase is $4K (4 buys totaling $15K). The largest single buy on record is $14K of SCWO in 2024. 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 Peter Mandel 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.
- Yaacov Nagar - $1.79M of SCWO 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 Peter Mandel?
Peter Mandel is a corporate insider, tracked as General Counsel of 374Water Inc. (SCWO). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Peter Mandel last file a Form 4?
The most recent primary Form 4 on record is dated 28 August 2025, one of 3 filings going back to 2024.
Has Peter Mandel been buying or selling stock?
Recorded transactions: 4 open-market purchases ($15K) and 0 open-market sales across all tracked filings.
How accurate is Peter Mandel's historical track record?
Across 3 tracked purchases, Peter Mandel averaged +16.7% avg 30-day return with a 67% 30-day win rate. InsiderAlpha rates the track record at 4/5 stars.
Where can I see all of Peter Mandel'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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