Skip to contentSchreffler Gwendolyn — CORE LABORATORIES N V insider: 22 transactions · InsiderLensInsider trading activity of Schreffler Gwendolyn
- Transactions on record
- 22
- since Feb 23, 2021
- Open-market buys
- 0
- Open-market sells
- 0
- Companies traded
- 1
- last filing Feb 17, 2026
Figures computed from official regulatory filings — methodology.
Companies where Schreffler Gwendolyn has traded
Track record of Schreffler Gwendolyn
Insufficient history for a statistical track record (fewer than 5 open-market buys).
Transaction history of Schreffler Gwendolyn
Co-insiders of Schreffler Gwendolyn
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DEMSHUR DAVID MCORE LABORATORIES N V
| Company | Filed | Type | Qty | Price | Value · USD | Src |
|---|
| Feb 17, 2026 | AwardD | 33,490 | 0.00 USD | $0 | SEC |
| Jan 5, 2026 | ExerciseD | -24,952 | 0.00 USD | $0 | SEC |
| Jan 5, 2026 | Other | -19,301 | 16.03 USD | $309.4K | SEC |
| Jan 5, 2026 | Exercise | 24,952 | 0.00 USD | $0 | SEC |
| Feb 13, 2025 | AwardD | 32,912 | 0.00 USD | $0 | SEC |
| Jan 3, 2025 | Other | -5,989 | 17.31 USD | $103.7K | SEC |
| Jan 3, 2025 | Exercise | 9,604 | 0.00 USD | $0 | SEC |
| Jan 3, 2025 | ExerciseD | -9,604 | 0.00 USD | $0 | SEC |
| Feb 15, 2024 | AwardD | 38,002 | 0.00 USD | $0 | SEC |
| Jan 8, 2024 | Other | -5,775 | 17.66 USD | $102K | SEC |
| Jan 8, 2024 | Other | -4,722 | 20.27 USD | $95.7K | SEC |
| Jan 8, 2024 | Exercise | 12,000 | 0.00 USD | $0 | SEC |
| Jan 3, 2024 | Other | -5,643 | 17.66 USD | $99.7K | SEC |
| Jan 3, 2024 | ExerciseD | -14,674 | 0.00 USD | $0 | SEC |
| Jan 3, 2024 | Exercise | 14,674 | 0.00 USD | $0 | SEC |
| Feb 21, 2023 | AwardD | 21,418 | 0.00 USD | $0 | SEC |
| Feb 17, 2022 | AwardD | 17,588 | 0.00 USD | $0 | SEC |
| Jan 4, 2022 | Other | -1,850 | 22.31 USD | $41.3K | SEC |
| Jan 4, 2022 | Exercise | 4,700 | 0.00 USD | $0 | SEC |
| Jan 4, 2022 | ExerciseD | -4,700 | 0.00 USD | $0 | SEC |
| Jun 21, 2021 | Other | -2,896 | 0.00 USD | $0 | SEC |
| Feb 23, 2021 | AwardD | 13,810 | 0.00 USD | $0 | SEC |