Updated Jul 16, 2026
Mastrocola David John has filed 1 SEC Form 4 filing across 1 company in the last 90 days — buying. Lifetime open-market purchases: $208K. Historical track record: 3/5 stars across 3 tracked purchases.
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★★☆☆ (3/5) |
|---|---|
| Total purchases tracked | 3 |
| Purchases with forward-return data | 3 |
| 30-day win rate | 6667% |
| 90-day win rate | 0% |
| Avg 5-day return | -77.29% |
| Avg 30-day return | +2.55% |
| Avg 90-day return | -486.19% |
| Best 30-day return | +369.10% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-13 | CPS | Cooper-Standard Holdings Inc. | P — Open-market purchase | 3.4K | $29.77 | $101K |
| 2026-03-13 | CPS | Cooper-Standard Holdings Inc. | P — Open-market purchase | 1.5K | $30.25 | $45K |
| 2026-03-13 | CPS | Cooper-Standard Holdings Inc. | P — Open-market purchase | 2.0K | $31.00 | $62K |
Mastrocola David John is a corporate insider — currently tracked as Director of Cooper-Standard Holdings Inc. (CPS). InsiderAlpha tracks every SEC Form 4 filing in real time.
1 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 3 open-market purchases ($208K) and 0 open-market sales () across all tracked filings.
Across 3 tracked purchases, Mastrocola David John averaged +2.5% avg 30-day return with a 6667% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
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.
Open the live Mastrocola David John profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.