CORE LABORATORIES INC (CLB) — insider trading
Energy · NYSE
CORE LABORATORIES INC (CLB) has 42 reported SEC Form 4 insider transactions in our data, including 1 open-market purchase among the most recent 42 (latest 2026-10-01).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-10-01 | Tattoli Mark Damian | Officer (SVP, Gen Counsel & Secretary) | Option exercise / conversion (derivative) | 700 | — | $0 | Form 4 |
| 2026-10-01 | Tattoli Mark Damian | Officer (SVP, Gen Counsel & Secretary) | Option exercise / conversion | 700 | — | $0 | Form 4 |
| 2026-10-01 | Tattoli Mark Damian | Officer (SVP, Gen Counsel & Secretary) | Shares withheld for taxes / exercise cost | 276 | $9.76 | $2.7K | Form 4 |
| 2026-10-01 | Teo Sow Hang | Officer (CAO & Treasurer) | Option exercise / conversion (derivative) | 250 | — | $0 | Form 4 |
| 2026-10-01 | Teo Sow Hang | Officer (CAO & Treasurer) | Option exercise / conversion | 250 | — | $0 | Form 4 |
| 2026-10-01 | Teo Sow Hang | Officer (CAO & Treasurer) | Shares withheld for taxes / exercise cost | 99 | $9.76 | $966 | Form 4 |
| 2026-08-01 | Tattoli Mark Damian | Officer (SVP, Gen Counsel & Secretary) | Option exercise / conversion (derivative) | 250 | — | $0 | Form 4 |
| 2026-08-01 | Tattoli Mark Damian | Officer (SVP, Gen Counsel & Secretary) | Option exercise / conversion | 250 | — | $0 | Form 4 |
| 2026-08-01 | Tattoli Mark Damian | Officer (SVP, Gen Counsel & Secretary) | Shares withheld for taxes / exercise cost | 99 | $10.64 | $1.1K | Form 4 |
| 2026-08-01 | Teo Sow Hang | Officer (CAO & Treasurer) | Option exercise / conversion (derivative) | 200 | — | $0 | Form 4 |
| 2026-08-01 | Teo Sow Hang | Officer (CAO & Treasurer) | Option exercise / conversion (derivative) | 240 | — | $0 | Form 4 |
| 2026-08-01 | Teo Sow Hang | Officer (CAO & Treasurer) | Option exercise / conversion | 200 | — | $0 | Form 4 |
| 2026-08-01 | Teo Sow Hang | Officer (CAO & Treasurer) | Shares withheld for taxes / exercise cost | 90 | $10.64 | $958 | Form 4 |
| 2026-08-01 | Teo Sow Hang | Officer (CAO & Treasurer) | Option exercise / conversion | 240 | — | $0 | Form 4 |
| 2026-08-01 | Teo Sow Hang | Officer (CAO & Treasurer) | Shares withheld for taxes / exercise cost | 108 | $10.64 | $1.1K | Form 4 |
| 2026-07-31 | Bruno Lawrence | Director, Officer (Chairman and CEO) | Open-market purchase | 5,000 | $10.78 | $53.9K | Form 4 |
| 2026-05-01 | Tattoli Mark Damian | Officer (SVP, Gen Counsel & Secretary) | Option exercise / conversion (derivative) | 250 | — | $0 | Form 4 |
| 2026-05-01 | Tattoli Mark Damian | Officer (SVP, Gen Counsel & Secretary) | Option exercise / conversion | 250 | — | $0 | Form 4 |
| 2026-05-01 | Tattoli Mark Damian | Officer (SVP, Gen Counsel & Secretary) | Shares withheld for taxes / exercise cost | 97 | $14.07 | $1.4K | Form 4 |
| 2026-04-01 | Murray Katherine | Director | Option exercise / conversion (derivative) | 8,069 | — | $0 | Form 4 |
| 2026-04-01 | Murray Katherine | Director | Grant / award / vesting (derivative) | 7,895 | — | $0 | Form 4 |
| 2026-04-01 | Murray Katherine | Director | Option exercise / conversion | 8,069 | — | $0 | Form 4 |
| 2026-04-01 | Carnes Martha Z. | Director | Option exercise / conversion (derivative) | 8,069 | — | $0 | Form 4 |
| 2026-04-01 | Carnes Martha Z. | Director | Grant / award / vesting (derivative) | 7,895 | — | $0 | Form 4 |
| 2026-04-01 | Carnes Martha Z. | Director | Option exercise / conversion | 8,069 | — | $0 | Form 4 |
| 2026-04-01 | MARTINOVICH ROBERT F | Director | Option exercise / conversion (derivative) | 8,069 | — | $0 | Form 4 |
| 2026-04-01 | MARTINOVICH ROBERT F | Director | Grant / award / vesting (derivative) | 7,895 | — | $0 | Form 4 |
| 2026-04-01 | MARTINOVICH ROBERT F | Director | Option exercise / conversion | 8,069 | — | $0 | Form 4 |
| 2026-04-01 | Temeng Kwaku | Director | Option exercise / conversion (derivative) | 8,069 | — | $0 | Form 4 |
| 2026-04-01 | Temeng Kwaku | Director | Grant / award / vesting (derivative) | 7,895 | — | $0 | Form 4 |
| 2026-04-01 | Temeng Kwaku | Director | Option exercise / conversion | 8,069 | — | $0 | Form 4 |
| 2026-04-01 | Klingensmith Harvey Robert | Director | Option exercise / conversion (derivative) | 8,069 | — | $0 | Form 4 |
| 2026-04-01 | Klingensmith Harvey Robert | Director | Grant / award / vesting (derivative) | 7,895 | — | $0 | Form 4 |
| 2026-04-01 | Klingensmith Harvey Robert | Director | Option exercise / conversion | 8,069 | — | $0 | Form 4 |
| 2026-04-01 | ANASTASIO CURT | Director | Option exercise / conversion (derivative) | 8,069 | — | $0 | Form 4 |
| 2026-04-01 | ANASTASIO CURT | Director | Grant / award / vesting (derivative) | 7,895 | — | $0 | Form 4 |
| 2026-04-01 | ANASTASIO CURT | Director | Option exercise / conversion | 8,069 | — | $0 | Form 4 |
| 2026-02-12 | Teo Sow Hang | Officer (CAO & Treasurer) | Grant / award / vesting (derivative) | 7,526 | — | $0 | Form 4 |
| 2026-02-12 | Bruno Lawrence | Director, Officer (Chairman and CEO) | Grant / award / vesting (derivative) | 204,340 | — | $0 | Form 4 |
| 2026-02-12 | Hill Christopher Scott | Officer (SVP & CFO) | Grant / award / vesting (derivative) | 70,008 | — | $0 | Form 4 |
| 2026-02-12 | Gresham Gwendolyn | Officer (SVP) | Grant / award / vesting (derivative) | 33,490 | — | $0 | Form 4 |
| 2026-02-12 | Tattoli Mark Damian | Officer (SVP, Gen Counsel & Secretary) | Grant / award / vesting (derivative) | 33,490 | — | $0 | Form 4 |
Ask the chat about CLB's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: CORE LABORATORIES INC (CLB).
Last updated 2026-10-01 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.