Core Laboratories Inc. /DE/ (CLB) Insider Ownership

Historic Insider Ownership Trends

Over the 90-day window ending February 19, 2026, Core Laboratories's three dominant insider ownership positions are held by Chairman And Ceo Lawrence Bruno (370.12K shares), Svp & Cfo Christopher Scott Hill (142.35K shares), Svp Gwendolyn Gresham (52.53K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Lawrence Bruno Chairman And Ceo 370,119 05 Jan, 2026
Christopher Scott Hill Svp & Cfo 142,354 05 Jan, 2026
Gwendolyn Gresham Svp 52,527 05 Jan, 2026
Martha Z. Carnes 46,328 02 Apr, 2025
Harvey Robert Klingensmith 41,962 02 Apr, 2025
Mark Damian Tattoli Svp And Gen Counsel & Secretary 41,671 05 Jan, 2026
Michael Straughen 29,186 02 Apr, 2025
Kwaku Temeng 25,528 02 Apr, 2025
Katherine Murray 21,221 02 Apr, 2025
Curt Anastasio 15,736 02 Apr, 2025
Kevin Daniels Cao & Treasurer 13,115 08 Jan, 2024
Sow Hang Teo Cao & Treasurer 8,765 02 Dec, 2025

* 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
31 Dec, 2025 Christopher Scott Hill Common Stock D 32,152 $16.03 110,202 D F
31 Dec, 2025 Christopher Scott Hill Common Stock A 61,417 $0.00 142,354 D M
31 Dec, 2025 Lawrence Bruno Common Stock D 112,681 $16.03 257,438 D F
31 Dec, 2025 Lawrence Bruno Common Stock A 180,722 $0.00 370,119 D M
31 Dec, 2025 Gwendolyn Gresham Common Stock A 24,952 $0.00 52,527 D M
31 Dec, 2025 Gwendolyn Gresham Common Stock D 19,301 $16.03 33,226 D F
31 Dec, 2025 Mark Damian Tattoli Common Stock D 14,310 $16.03 27,361 D F
31 Dec, 2025 Mark Damian Tattoli Common Stock A 24,952 $0.00 41,671 D M
01 Dec, 2025 Sow Hang Teo Common Stock D 340 $15.39 8,425 D F
01 Dec, 2025 Sow Hang Teo Common Stock A 864 $0.00 8,765 D M
01 Oct, 2025 Mark Damian Tattoli Common Stock A 700 $0.00 16,995 D M
01 Oct, 2025 Mark Damian Tattoli Common Stock D 276 $12.58 16,719 D F
01 Oct, 2025 Sow Hang Teo Common Stock A 250 $0.00 8,000 D M
01 Oct, 2025 Sow Hang Teo Common Stock D 99 $12.58 7,901 D F
01 Aug, 2025 Mark Damian Tattoli Common Stock A 250 $0.00 16,394 D M
01 Aug, 2025 Mark Damian Tattoli Common Stock D 99 $10.53 16,295 D F
01 Aug, 2025 Sow Hang Teo Common Stock D 90 $10.53 7,750 D F
01 Aug, 2025 Sow Hang Teo Common Stock A 240 $0.00 7,748 D M
01 Aug, 2025 Sow Hang Teo Common Stock D 108 $10.53 7,640 D F
01 Aug, 2025 Sow Hang Teo Common Stock A 200 $0.00 7,840 D M