Across the past 12 months, open-market trades by Core Laboratories insiders were all purchases, totaling $53,900 (5K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Lawrence Bruno | Chairman And Ceo | 262,438 | 0 | 262,438 | 35.7% | 04 Aug, 2026 |
| 2 | Christopher Scott Hill | Svp Cfo | 142,354 | 0 | 142,354 | 19.3% | 05 Jan, 2026 |
| 3 | Martha Z. Carnes | Director | 54,397 | 0 | 54,397 | 7.4% | 07 Apr, 2026 |
| 4 | Gwendolyn Gresham | Svp | 52,527 | 0 | 52,527 | 7.1% | 05 Jan, 2026 |
| 5 | Harvey Robert Klingensmith | Director | 50,031 | 0 | 50,031 | 6.8% | 07 Apr, 2026 |
| 6 | Kwaku Temeng | Director | 33,597 | 0 | 33,597 | 4.6% | 07 Apr, 2026 |
| 7 | Katherine Murray | Director | 29,290 | 0 | 29,290 | 4.0% | 08 Apr, 2026 |
| 8 | Michael Straughen | Director | 29,186 | 0 | 29,186 | 4.0% | 02 Apr, 2025 |
| 9 | Mark Damian Tattoli | Svp, Gen Counsel Secretary | 28,365 | 0 | 28,365 | 3.9% | 05 Oct, 2026 |
| 10 | Curt Anastasio | Director | 23,805 | 0 | 23,805 | 3.2% | 07 Apr, 2026 |
| 11 | Kevin Daniels | Cao Treasurer | 13,115 | 0 | 13,115 | 1.8% | 08 Jan, 2024 |
| 12 | Sow Hang Teo | Cao Treasurer | 8,917 | 0 | 8,917 | 1.2% | 05 Oct, 2026 |
| 13 | Robert F Martinovich | Director | 8,069 | 0 | 8,069 | 1.1% | 07 Apr, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 01 Oct, 2026 | Mark Damian Tattoli | Svp, Gen Counsel Secretary | Disposed F | 276 | $9.76 | $2.69K | 28,089 | Direct |
| 01 Oct, 2026 | Sow Hang Teo | Cao Treasurer | Disposed F | 99 | $9.76 | $966 | 8,818 | Direct |
| 01 Oct, 2026 | Mark Damian Tattoli | Svp, Gen Counsel Secretary | Acquired M | 700 | $0.00 | $0 | 28,365 | Direct |
| 01 Oct, 2026 | Sow Hang Teo | Cao Treasurer | Acquired M | 250 | $0.00 | $0 | 8,917 | Direct |
| 01 Oct, 2026 | Sow Hang Teo | Cao Treasurer | Disposed M | 250 | $0.00 | $0 | 6,000 | Direct |
| 01 Oct, 2026 | Mark Damian Tattoli | Svp, Gen Counsel Secretary | Disposed M | 700 | $0.00 | $0 | 250 | Direct |
| 01 Aug, 2026 | Sow Hang Teo | Cao Treasurer | Disposed F | 108 | $10.64 | $1.15K | 8,667 | Direct |
| 31 Jul, 2026 | Lawrence Bruno | Chairman And Ceo | Acquired P | 5,000 | $10.78 | $53.90K | 262,438 | Direct |
| 01 Aug, 2026 | Mark Damian Tattoli | Svp, Gen Counsel Secretary | Disposed F | 99 | $10.64 | $1.05K | 27,665 | Direct |
| 01 Aug, 2026 | Sow Hang Teo | Cao Treasurer | Acquired M | 240 | $0.00 | $0 | 8,775 | Direct |
| 01 Aug, 2026 | Mark Damian Tattoli | Svp, Gen Counsel Secretary | Acquired M | 250 | $0.00 | $0 | 27,764 | Direct |
| 01 Aug, 2026 | Sow Hang Teo | Cao Treasurer | Disposed F | 90 | $10.64 | $958 | 8,535 | Direct |
| 01 Aug, 2026 | Sow Hang Teo | Cao Treasurer | Acquired M | 200 | $0.00 | $0 | 8,625 | Direct |
| 01 Aug, 2026 | Mark Damian Tattoli | Svp, Gen Counsel Secretary | Disposed M | 250 | $0.00 | $0 | 950 | Direct |
| 01 Aug, 2026 | Sow Hang Teo | Cao Treasurer | Disposed M | 240 | $0.00 | $0 | 6,250 | Direct |
| 01 Aug, 2026 | Sow Hang Teo | Cao Treasurer | Disposed M | 200 | $0.00 | $0 | 6,490 | Direct |
| 01 May, 2026 | Mark Damian Tattoli | Svp, Gen Counsel Secretary | Disposed F | 97 | $14.07 | $1.36K | 27,514 | Direct |
| 01 May, 2026 | Mark Damian Tattoli | Svp, Gen Counsel Secretary | Acquired M | 250 | $0.00 | $0 | 27,611 | Direct |
| 01 May, 2026 | Mark Damian Tattoli | Svp, Gen Counsel Secretary | Disposed M | 250 | $0.00 | $0 | 1,200 | Direct |
| 01 Apr, 2026 | Katherine Murray | Director | Acquired M | 8,069 | $0.00 | $0 | 29,290 | Direct |