Gwendolyn Gresham
Insider
First SEC filing: Feb. 15, 2024 · Latest: Feb. 15, 2024
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 12, 2026 | CLB | A | 33,490 | · | · | 33,490 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2025 | CLB | M | 24,952 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Dec. 31, 2025 | CLB | M | 24,952 | · | · | 52,527 Direct | +90.49% | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2025 | CLB | F | 19,301 | $16.03 | $309,395 | 33,226 Direct | -36.74% | Disposed | -38.1% (price as of 2026-10-02) |
| Feb. 13, 2025 | CLB | A | 32,912 | · | · | 32,912 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2024 | CLB | M | 9,604 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Dec. 31, 2024 | CLB | M | 9,604 | · | · | 33,564 Direct | +40.08% | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2024 | CLB | F | 5,989 | $17.31 | $103,670 | 27,575 Direct | -17.84% | Disposed | -42.7% (price as of 2026-10-02) |
| Feb. 15, 2024 | CLB | A | 38,002 | · | · | 38,002 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2023 | CLB | F | 5,775 | $17.66 | $101,986 | 23,960 Direct | -19.42% | Disposed | -43.8% (price as of 2026-10-02) |
| Dec. 31, 2023 | CLB | M | 14,674 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Dec. 31, 2023 | CLB | M | 14,674 | · | · | 29,735 Direct | +97.43% | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2023 | CLB | F | 5,643 | $17.66 | $99,655 | 24,092 Direct | -18.98% | Disposed | -43.8% (price as of 2026-10-02) |
| Dec. 31, 2022 | CLB | M | 12,000 | · | · | 19,783 Direct | +154.18% | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2022 | CLB | F | 4,722 | $20.27 | $95,715 | 15,061 Direct | -23.87% | Disposed | -51.1% (price as of 2026-10-02) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Feb. 12, 2026 | CLB | Performance Shares | Common Stock | $0.00 | · | 33,490 | Acquired |
| Dec. 31, 2025 | CLB | Performance Shares | Common Stock | $0.00 | · | 24,952 | Disposed |
| Feb. 13, 2025 | CLB | Performance Shares | Common Stock | $0.00 | · | 32,912 | Acquired |
| Dec. 31, 2024 | CLB | Performance Shares | Common Stock | $0.00 | · | 9,604 | Disposed |
| Feb. 15, 2024 | CLB | Performance Shares | Common Stock | $0.00 | · | 38,002 | Acquired |
| Dec. 31, 2023 | CLB | Performance Shares | Common Stock | $0.00 | · | 14,674 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).