Updated Jul 16, 2026
NATHAN GILBERT E has filed 2 SEC Form 4 filings across 1 company in the last 90 days — buying. Lifetime open-market purchases: $401K. Historical track record: 3/5 stars across 7 tracked purchases.
Gilbert E Nathan is a corporate director known for his role at MagnaChip Semiconductor Corp and Alto Ingredients, Inc. He has participated in multiple SEC filings related to his positions in these companies.
| Role | Director |
|---|---|
| Notability | 30/100 |
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 | 7 |
| Purchases with forward-return data | 7 |
| 30-day win rate | 7143% |
| 90-day win rate | 7143% |
| Avg 5-day return | -2.07% |
| Avg 30-day return | +245.75% |
| Avg 90-day return | +4777.46% |
| Best 30-day return | +1145.04% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-25 | ALTO | Alto Ingredients, Inc. | A — Grant or award | 31.7K | $0.00 | |
| 2026-05-14 | ALTO | Alto Ingredients, Inc. | P — Open-market purchase | 5.0K | $4.45 | $22K |
| 2026-05-14 | ALTO | Alto Ingredients, Inc. | P — Open-market purchase | 20.0K | $4.61 | $92K |
| 2026-03-17 | MX | MAGNACHIP SEMICONDUCTOR Corp | P — Open-market purchase | 22.0K | $2.87 | $63K |
| 2026-03-16 | MX | MAGNACHIP SEMICONDUCTOR Corp | P — Open-market purchase | 13.0K | $2.79 | $36K |
| 2026-03-16 | MX | MAGNACHIP SEMICONDUCTOR Corp | P — Open-market purchase | 25.0K | $2.75 | $69K |
| 2026-03-09 | RC | Ready Capital Corp | P — Open-market purchase | 30.0K | $1.95 | $58K |
| 2026-03-09 | RC | Ready Capital Corp | A — Grant or award | 58.3K | $0.00 | |
| 2026-03-09 | RC | Ready Capital Corp | P — Open-market purchase | 10.0K | $2.02 | $20K |
| 2026-02-17 | MX | MAGNACHIP SEMICONDUCTOR Corp | A — Grant or award | 1.5K | $0.00 | |
| 2025-11-17 | MX | MAGNACHIP SEMICONDUCTOR Corp | A — Grant or award | 6.3K | $0.00 | |
| 2025-07-09 | ALTO | Alto Ingredients, Inc. | A — Grant or award | 49.2K | $0.00 | |
| 2025-07-01 | MX | MAGNACHIP SEMICONDUCTOR Corp | A — Grant or award | 50.6K | $0.00 | |
| 2024-11-15 | ALTO | Alto Ingredients, Inc. | P — Open-market purchase | 5.0K | $1.32 | $7K |
| 2024-11-15 | ALTO | Alto Ingredients, Inc. | P — Open-market purchase | 25.0K | $1.34 | $33K |
Gilbert E Nathan is a corporate director known for his role at MagnaChip Semiconductor Corp and Alto Ingredients, Inc. He has participated in multiple SEC filings related to his positions in these companies.…
2 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 9 open-market purchases ($401K) and 0 open-market sales () across all tracked filings.
Across 7 tracked purchases, NATHAN GILBERT E averaged +245.7% avg 30-day return with a 7143% 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 NATHAN GILBERT E profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.