Core Laboratories's top three insider shareholders as of April 22, 2026 are Lawrence Bruno (Chairman And Ceo, 370.12K shares), Christopher Scott Hill (Svp Cfo, 142.35K shares), Christopher Scott Hill (Svp Cfo, 142.35K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Lawrence Bruno | Chairman And Ceo | 370,119 | 0 | 05 Jan, 2026 |
| Christopher Scott Hill | Svp Cfo | 142,354 | 0 | 05 Jan, 2026 |
| Christopher Scott Hill | Svp Cfo | 142,354 | 0 | 05 Jan, 2026 |
| Martha Z. Carnes | - | 54,397 | 0 | 07 Apr, 2026 |
| Gwendolyn Gresham | Svp | 52,527 | 0 | 05 Jan, 2026 |
| Gwendolyn Gresham | Svp | 52,527 | 0 | 05 Jan, 2026 |
| Harvey Robert Klingensmith | - | 50,031 | 0 | 07 Apr, 2026 |
| Mark Damian Tattoli | Svp, Gen Counsel Secretary | 41,671 | 0 | 05 Jan, 2026 |
| Mark Damian Tattoli | Svp, Gen Counsel Secretary | 41,671 | 0 | 05 Jan, 2026 |
| Kwaku Temeng | - | 33,597 | 0 | 07 Apr, 2026 |
| Michael Straughen | - | 29,186 | 0 | 02 Apr, 2025 |
| Michael Straughen | - | 29,186 | 0 | 02 Apr, 2025 |
| Curt Anastasio | - | 23,805 | 0 | 07 Apr, 2026 |
| Kevin Daniels | Cao Treasurer | 13,115 | 0 | 08 Jan, 2024 |
| Kevin Daniels | Cao Treasurer | 13,115 | 0 | 08 Jan, 2024 |
| Sow Hang Teo | Cao Treasurer | 8,765 | 0 | 02 Dec, 2025 |
| Sow Hang Teo | Cao Treasurer | 8,765 | 0 | 02 Dec, 2025 |
| Robert F Martinovich | - | 8,069 | 0 | 07 Apr, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Martha Z. Carnes | Common Stock | A | 8,069 | $0.00 | 54,397 | D | M |
| 01 Apr, 2026 | Curt Anastasio | Common Stock | A | 8,069 | $0.00 | 23,805 | D | M |
| 01 Apr, 2026 | Harvey Robert Klingensmith | Common Stock | A | 8,069 | $0.00 | 50,031 | D | M |
| 01 Apr, 2026 | Kwaku Temeng | Common Stock | A | 8,069 | $0.00 | 33,597 | D | M |
| 01 Apr, 2026 | Robert F Martinovich | Common Stock | A | 8,069 | $0.00 | 8,069 | D | M |
| 01 Apr, 2026 | Harvey Robert Klingensmith | Restricted Shares | A | 7,895 | $0.00 | 7,895 | D | A |
| 01 Apr, 2026 | Robert F Martinovich | Restricted Shares | A | 7,895 | $0.00 | 7,895 | D | A |
| 01 Apr, 2026 | Curt Anastasio | Restricted Shares | A | 7,895 | $0.00 | 7,895 | D | A |
| 01 Apr, 2026 | Kwaku Temeng | Restricted Shares | A | 7,895 | $0.00 | 7,895 | D | A |
| 01 Apr, 2026 | Martha Z. Carnes | Restricted Shares | A | 7,895 | $0.00 | 7,895 | D | A |
| 01 Apr, 2026 | Harvey Robert Klingensmith | Restricted Shares | D | 8,069 | $0.00 | 0 | D | M |
| 01 Apr, 2026 | Robert F Martinovich | Restricted Shares | D | 8,069 | $0.00 | 0 | D | M |
| 01 Apr, 2026 | Martha Z. Carnes | Restricted Shares | D | 8,069 | $0.00 | 0 | D | M |
| 01 Apr, 2026 | Kwaku Temeng | Restricted Shares | D | 8,069 | $0.00 | 0 | D | M |
| 01 Apr, 2026 | Curt Anastasio | Restricted Shares | D | 8,069 | $0.00 | 0 | D | M |
| 12 Feb, 2026 | Mark Damian Tattoli | Performance Shares | A | 33,490 | $0.00 | 33,490 | D | A |
| 12 Feb, 2026 | Gwendolyn Gresham | Performance Shares | A | 33,490 | $0.00 | 33,490 | D | A |
| 12 Feb, 2026 | Sow Hang Teo | Performance Shares | A | 7,526 | $0.00 | 7,526 | D | A |
| 12 Feb, 2026 | Lawrence Bruno | Performance Shares | A | 204,340 | $0.00 | 204,340 | D | A |
| 12 Feb, 2026 | Gwendolyn Gresham | Performance Shares | A | 33,490 | $0.00 | 33,490 | D | A |