Who
Gwendolyn Gresham
SVP
Company insider
Files Form 4 as: SVP, Core Laboratories; SVP, Core Laboratories N V.
In numbers
- Trades disclosed
- 29
- Buys
- 0
- Sells
- 0
- Bought
- $0
- Sold
- $0
- Companies
- 2
- Companies where not an officer
- 0
- First trade
- 19 Feb 2021
- Last trade
- 12 Feb 2026
- Last filed
- 17 Feb 2026
Companies traded
Activity over time
Not enough dated trades to draw.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 12 Feb 2026filed 17 Feb 2026 | CLB Core Laboratoriesoption or derivative · Oilfield services | SEC FORM 4 Code A | —33,490 at $0.00 | filing |
| 12 Feb 2026filed 17 Feb 2026 | CLB Core Laboratoriesoption or derivative · Oilfield services | SEC FORM 4 Code A | —33,490 at $0.00 | filing |
| 31 Dec 2025filed 5 Jan 2026 | CLB Core LaboratoriesOilfield services | SEC FORM 4 Code F | $309K19,301 at $16.03 | filing |
| 31 Dec 2025filed 5 Jan 2026 | CLB Core LaboratoriesOilfield services | SEC FORM 4 Code M | —24,952 at $0.00 | filing |
| 31 Dec 2025filed 5 Jan 2026 | CLB Core Laboratoriesoption or derivative · Oilfield services | SEC FORM 4 Code M | —24,952 at $0.00 | filing |
| 31 Dec 2025filed 5 Jan 2026 | CLB Core Laboratoriesoption or derivative · Oilfield services | SEC FORM 4 Code M | —24,952 at $0.00 | filing |
| 31 Dec 2025filed 5 Jan 2026 | CLB Core LaboratoriesOilfield services | SEC FORM 4 Code F | $309K19,301 at $16.03 | filing |
| 31 Dec 2025filed 5 Jan 2026 | CLB Core LaboratoriesOilfield services | SEC FORM 4 Code M | —24,952 at $0.00 | filing |
| 13 Feb 2025filed 13 Feb 2025 | CLB Core Laboratoriesoption or derivative · Oilfield services | SEC FORM 4 Code A | —32,912 at $0.00 | filing |
| 31 Dec 2024filed 3 Jan 2025 | CLB Core Laboratoriesoption or derivative · Oilfield services | SEC FORM 4 Code M | —9,604 at $0.00 | filing |
| 31 Dec 2024filed 3 Jan 2025 | CLB Core LaboratoriesOilfield services | SEC FORM 4 Code F | $104K5,989 at $17.31 | filing |
| 31 Dec 2024filed 3 Jan 2025 | CLB Core LaboratoriesOilfield services | SEC FORM 4 Code M | —9,604 at $0.00 | filing |
| 15 Feb 2024filed 15 Feb 2024 | CLB Core Laboratoriesoption or derivative · Oilfield services | SEC FORM 4 Code A | —38,002 at $0.00 | filing |
| 31 Dec 2023filed 8 Jan 2024 | CLB Core LaboratoriesOilfield services | SEC FORM 4 Code F | $102K5,775 at $17.66 | filing |
| 31 Dec 2023filed 3 Jan 2024 | CLB Core Laboratoriesoption or derivative · Oilfield services | SEC FORM 4 Code M | —14,674 at $0.00 | filing |
| 31 Dec 2023filed 3 Jan 2024 | CLB Core LaboratoriesOilfield services | SEC FORM 4 Code F | $100K5,643 at $17.66 | filing |
| 31 Dec 2023filed 3 Jan 2024 | CLB Core LaboratoriesOilfield services | SEC FORM 4 Code M | —14,674 at $0.00 | filing |
| 16 Feb 2023filed 21 Feb 2023 | Core Laboratories N Voption or derivative | SEC FORM 4 Code A | —21,418 at $0.00 | filing |
| 31 Dec 2022filed 8 Jan 2024 | CLB Core LaboratoriesOilfield services | SEC FORM 4 Code F | $96K4,722 at $20.27 | filing |
| 31 Dec 2022filed 8 Jan 2024 | CLB Core LaboratoriesOilfield services | SEC FORM 4 Code M | —12,000 at $0.00 | filing |
News
No headline names them, or the companies they trade most, lately.
Sectors
No trade we could place in a sector.