Skip to contentHarmer Derek — ALFACELL CORP insider: 223 transactions · InsiderLensHarmer Derek
- Chief Compliance Officer at ALFACELL CORP · on record since Nov 22, 2019
Insider trading activity of Harmer Derek
- Transactions on record
- 223
- since Nov 22, 2019
- Open-market buys
- 0
- Open-market sells
- 32
- $3.3M
- Companies traded
- 1
- last filing Jun 15, 2026
Figures computed from official regulatory filings — methodology.
Companies where Harmer Derek has traded
Track record of Harmer Derek
Insufficient history for a statistical track record (fewer than 5 open-market buys).
Transaction history of Harmer Derek
Co-insiders of Harmer Derek
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COULTER JAMES GALFACELL CORP
| Company | Filed | Type | Qty | Price | Value · USD | Src |
|---|
| Jun 15, 2026 | Sell | -20,000 | 13.00 USD | $260K | SEC |
| Jun 9, 2026 | AwardD | 42,085 | 0.00 USD | $0 | SEC |
| Mar 16, 2026 | Exercise | 7,728 | 0.00 USD | $0 | SEC |
| Mar 16, 2026 | Gift | 1,000 | 0.00 USD | $0 | SEC |
| Mar 16, 2026 | ExerciseD | -23,037 | 0.00 USD | $0 | SEC |
| Mar 16, 2026 | Other | -2,265 | 11.29 USD | $25.6K | SEC |
| Mar 16, 2026 | Other | -1,994 | 11.29 USD | $22.5K | SEC |
| Mar 16, 2026 | Other | -6,750 | 11.29 USD | $76.2K | SEC |
| Mar 16, 2026 | ExerciseD | -1,846 | 0.00 USD | $0 | SEC |
| Mar 16, 2026 | Exercise | 23,037 | 0.00 USD | $0 | SEC |
| Mar 16, 2026 | ExerciseD | -7,728 | 0.00 USD | $0 | SEC |
| Mar 16, 2026 | Exercise | 1,846 | 0.00 USD | $0 | SEC |
| Mar 16, 2026 | Other | -541 | 11.29 USD | $6.1K | SEC |
| Mar 16, 2026 | Sell | -20,000 | 11.39 USD | $227.8K | SEC |
| Mar 16, 2026 | Exercise | 6,803 | 0.00 USD | $0 | SEC |
| Mar 16, 2026 | ExerciseD | -6,803 | 0.00 USD | $0 | SEC |
| Mar 12, 2026 | Sell | -2,092 | 11.45 USD | $24K | SEC |
| Mar 12, 2026 | ExerciseD | -7,138 | 0.00 USD | $0 | SEC |
| Mar 12, 2026 | Exercise | 7,138 | 0.00 USD | $0 | SEC |
| Feb 27, 2026 | AwardD | 23,037 | 0.00 USD | $0 | SEC |
| Dec 29, 2025 | Sell | -5,000 | 11.50 USD | $57.5K | SEC |
| Dec 29, 2025 | Sell | -5,000 | 11.50 USD | $57.5K | SEC |
| Dec 16, 2025 | Other | -542 | 11.30 USD | $6.1K | SEC |
| Dec 16, 2025 | Exercise | 1,847 | 0.00 USD | $0 | SEC |
| Dec 16, 2025 | Sell | -10,000 | 11.11 USD | $111.1K | SEC |