| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Report Date |
|---|---|---|---|---|---|
| Lawrence Bruno | Chairman and CEO, Director | $6,295,724 | 12 Feb 2026 | ||
| Gwendolyn Gresham | Svp | $893,484 | 12 Feb 2026 | ||
| Mark D. Tattoli | SVP, Gen Counsel & Secretary | $737,986 | 12 Feb 2026 | ||
| Martha Z. Carnes | Director | $693,993 | 01 Apr 2025 | ||
| Harvey Robert Klingensmith | Director | $628,591 | 01 Apr 2025 | ||
| Michael Straughen | Director | $437,206 | 01 Apr 2025 | ||
| Kwaku Temeng | Director | $382,409 | 01 Apr 2025 | ||
| Katherine Murray | Director | $317,891 | 01 Apr 2025 | ||
| Curt Anastasio | Director | $235,725 | 01 Apr 2025 | ||
| Kevin Daniels | CAO & Treasurer | $231,611 | 15 Feb 2024 | ||
| Sow Hang Teo | CAO & Treasurer | $134,021 | 12 Feb 2026 | ||
| Christopher Scott Hill | Svp & Cfo | $1,113 | 12 Feb 2026 | ||
| Robert F. Martinovich | Director | $0 | 21 May 2025 |
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Mark D. Tattoli | CLB | Performance Shares | Award | 33,490 | 33,490 | 12 Feb 2026 | Direct | |||
| Gwendolyn Gresham | CLB | Performance Shares | Award | 33,490 | 33,490 | 12 Feb 2026 | Direct | |||
| Christopher Scott Hill | CLB | Performance Shares | Award | 70,008 | 70,008 | 12 Feb 2026 | Direct | |||
| Lawrence Bruno | CLB | Performance Shares | Award | 204,340 | 204,340 | 12 Feb 2026 | Direct | |||
| Sow Hang Teo | CLB | Performance Shares | Award | 7,526 | 7,526 | 12 Feb 2026 | Direct | |||
| Mark D. Tattoli | CLB | Common Stock | Options Exercise | 149.2% | 24,952 | 41,671 | 31 Dec 2025 | Direct | ||
| Mark D. Tattoli | CLB | Common Stock | Tax liability | -34.3% | -14,310 | 27,361 | 31 Dec 2025 | Direct | ||
| Mark D. Tattoli | CLB | Performance Shares | Options Exercise | -100% | -24,952 | 0 | 31 Dec 2025 | Direct | ||
| Gwendolyn Gresham | CLB | Common Stock | Options Exercise | 90.5% | 24,952 | 52,527 | 31 Dec 2025 | Direct | ||
| Gwendolyn Gresham | CLB | Common Stock | Tax liability | -36.7% | -19,301 | 33,226 | 31 Dec 2025 | Direct | ||
| Gwendolyn Gresham | CLB | Performance Shares | Options Exercise | -100% | -24,952 | 0 | 31 Dec 2025 | Direct | ||
| Christopher Scott Hill | CLB | Common Stock | Options Exercise | 75.9% | 61,417 | 142,354 | 31 Dec 2025 | Direct | ||
| Christopher Scott Hill | CLB | Common Stock | Tax liability | -22.6% | -32,152 | 110,202 | 31 Dec 2025 | Direct | ||
| Christopher Scott Hill | CLB | Performance Shares | Options Exercise | -100% | -61,417 | 0 | 31 Dec 2025 | Direct | ||
| Lawrence Bruno | CLB | Common Stock | Options Exercise | 95.4% | 180,722 | 370,119 | 31 Dec 2025 | Direct | ||
| Lawrence Bruno | CLB | Common Stock | Tax liability | -30.4% | -112,681 | 257,438 | 31 Dec 2025 | Direct | ||
| Lawrence Bruno | CLB | Performance Shares | Options Exercise | -100% | -180,722 | 0 | 31 Dec 2025 | Direct | ||
| Sow Hang Teo | CLB | Common Stock | Options Exercise | 10.9% | 864 | 8,765 | 01 Dec 2025 | Direct | ||
| Sow Hang Teo | CLB | Common Stock | Tax liability | -3.88% | -340 | 8,425 | 01 Dec 2025 | Direct | ||
| Sow Hang Teo | CLB | Restricted Shares | Options Exercise | -11.4% | -864 | 6,690 | 01 Dec 2025 | Direct | ||
| Mark D. Tattoli | CLB | Common Stock | Options Exercise | 4.3% | 700 | 16,995 | 01 Oct 2025 | Direct | ||
| Mark D. Tattoli | CLB | Common Stock | Tax liability | -1.62% | -276 | 16,719 | 01 Oct 2025 | Direct | ||
| Mark D. Tattoli | CLB | Restricted Shares | Options Exercise | -32.6% | -700 | 1,450 | 01 Oct 2025 | Direct | ||
| Sow Hang Teo | CLB | Common Stock | Options Exercise | 3.23% | 250 | 8,000 | 01 Oct 2025 | Direct | ||
| Sow Hang Teo | CLB | Common Stock | Tax liability | -1.24% | -99 | 7,901 | 01 Oct 2025 | Direct | ||
| Sow Hang Teo | CLB | Restricted Shares | Options Exercise | -3.2% | -250 | 7,554 | 01 Oct 2025 | Direct | ||
| Mark D. Tattoli | CLB | Common Stock | Options Exercise | 1.55% | 250 | 16,394 | 01 Aug 2025 | Direct | ||
| Mark D. Tattoli | CLB | Common Stock | Tax liability | -0.6% | -99 | 16,295 | 01 Aug 2025 | Direct | ||
| Mark D. Tattoli | CLB | Restricted Shares | Options Exercise | -10.4% | -250 | 2,150 | 01 Aug 2025 | Direct | ||
| Sow Hang Teo | CLB | Common Stock | Options Exercise | 5.95% | 440 | 7,840 | 01 Aug 2025 | Direct | ||
| Sow Hang Teo | CLB | Common Stock | Tax liability | -2.53% | -198 | 7,640 | 01 Aug 2025 | Direct | ||
| Sow Hang Teo | CLB | Restricted Shares | Options Exercise | -5.34% | -440 | 7,804 | 01 Aug 2025 | Direct | ||
| Sow Hang Teo | CLB | Common Stock | Options Exercise | 2.36% | 175 | 7,587 | 01 May 2025 | Direct | ||
| Sow Hang Teo | CLB | Common Stock | Tax liability | -1.04% | -79 | 7,508 | 01 May 2025 | Direct | ||
| Sow Hang Teo | CLB | Restricted Shares | Options Exercise | -2.08% | -175 | 8,244 | 01 May 2025 | Direct | ||
| Mark D. Tattoli | CLB | Common Stock | Options Exercise | 2.85% | 450 | 16,243 | 01 May 2025 | Direct | ||
| Mark D. Tattoli | CLB | Common Stock | Tax liability | -1.1% | -178 | 15,993 | 01 May 2025 | Direct | ||
| Mark D. Tattoli | CLB | Restricted Shares | Options Exercise | -15.8% | -450 | 2,400 | 01 May 2025 | Direct | ||
| Kwaku Temeng | CLB | Common Stock | Options Exercise | 57.5% | 9,317 | 25,528 | 01 Apr 2025 | Direct | ||
| Kwaku Temeng | CLB | Restricted Shares | Options Exercise | -100% | -9,317 | 0 | 01 Apr 2025 | Direct | ||
| Kwaku Temeng | CLB | Restricted Shares | Award | 8,069 | 8,069 | 01 Apr 2025 | Direct | |||
| Katherine Murray | CLB | Common Stock | Options Exercise | 78.3% | 9,317 | 21,221 | 01 Apr 2025 | Direct | ||
| Katherine Murray | CLB | Restricted Shares | Options Exercise | -100% | -9,317 | 0 | 01 Apr 2025 | Direct | ||
| Katherine Murray | CLB | Restricted Shares | Award | 8,069 | 8,069 | 01 Apr 2025 | Direct | |||
| Harvey Robert Klingensmith | CLB | Common Stock | Options Exercise | 28.5% | 9,317 | 41,962 | 01 Apr 2025 | Direct | ||
| Harvey Robert Klingensmith | CLB | Restricted Shares | Options Exercise | -100% | -9,317 | 0 | 01 Apr 2025 | Direct | ||
| Harvey Robert Klingensmith | CLB | Restricted Shares | Award | 8,069 | 8,069 | 01 Apr 2025 | Direct | |||
| Martha Z. Carnes | CLB | Common Stock | Options Exercise | 25.2% | 9,317 | 46,328 | 01 Apr 2025 | Direct | ||
| Martha Z. Carnes | CLB | Restricted Shares | Options Exercise | -100% | -9,317 | 0 | 01 Apr 2025 | Direct | ||
| Martha Z. Carnes | CLB | Restricted Shares | Award | 8,069 | 8,069 | 01 Apr 2025 | Direct |