Gregory B Cook
Insider
First SEC filing: Aug. 10, 2023 · Latest: Aug. 10, 2023
Insider at
Insider transactions
0 buys (P)
2 sells (S)
Net: $-2,372,845
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 11, 2026 | ECL | S | 4,567 | $285.13 | $1,302,189 | 11,673 Direct | -28.12% | Disposed | -3.8% (price as of 2026-10-05) |
| May 4, 2026 | ECL | M | 8,396 | · | · | 20,069 Direct | +71.93% | Acquired | (price as of 2026-10-05) |
| May 4, 2026 | ECL | F | 3,829 | $257.92 | $987,576 | 16,241 Direct | -19.08% | Disposed | 6.4% (price as of 2026-10-05) |
| May 4, 2026 | ECL | M | 8,396 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 26, 2026 | ECL | M | 3,800 | $137.09 | $520,942 | 15,192 Direct | +33.36% | Acquired | 100.2% (price as of 2026-10-05) |
| Feb. 26, 2026 | ECL | S | 3,519 | $304.25 | $1,070,656 | 11,673 Direct | -23.16% | Disposed | -9.8% (price as of 2026-10-05) |
| Feb. 26, 2026 | ECL | M | 3,800 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 18, 2026 | ECL | A | 3,388 | · | · | 12,458 Direct | +37.35% | Acquired | (price as of 2026-10-05) |
| Feb. 18, 2026 | ECL | F | 1,066 | $303.15 | $323,158 | 11,392 Direct | -8.56% | Disposed | -9.5% (price as of 2026-10-05) |
| Dec. 3, 2025 | ECL | A | 8,661 | · | · | 8,661 Direct | · | Acquired | (price as of 2026-10-05) |
| May 19, 2025 | ECL | G | 65 | · | · | 9,070 Direct | -0.71% | Disposed | (price as of 2026-10-05) |
| May 15, 2025 | ECL | M | 2,234 | $117.73 | $263,009 | 11,369 Direct | +24.46% | Acquired | 133.1% (price as of 2026-10-05) |
| May 15, 2025 | ECL | S | 2,234 | $253.00 | $565,202 | 9,135 Direct | -19.65% | Disposed | 8.5% (price as of 2026-10-05) |
| May 15, 2025 | ECL | M | 2,234 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 19, 2025 | ECL | A | 1,546 | · | · | 9,626 Direct | +19.13% | Acquired | (price as of 2026-10-05) |
| Feb. 19, 2025 | ECL | F | 490 | $265.18 | $129,938 | 9,135 Direct | -5.09% | Disposed | 3.5% (price as of 2026-10-05) |
| Dec. 4, 2024 | ECL | A | 8,272 | · | · | 8,272 Direct | · | Acquired | (price as of 2026-10-05) |
| Aug. 29, 2024 | ECL | M | 1,576 | $119.12 | $187,733 | 9,656 Direct | +19.50% | Acquired | 130.4% (price as of 2026-10-05) |
| Aug. 29, 2024 | ECL | M | 2,235 | $117.73 | $263,127 | 11,891 Direct | +23.15% | Acquired | 133.1% (price as of 2026-10-05) |
| Aug. 29, 2024 | ECL | S | 3,811 | $249.33 | $950,197 | 8,080 Direct | -32.05% | Disposed | 10.1% (price as of 2026-10-05) |
| Aug. 29, 2024 | ECL | M | 1,576 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Aug. 29, 2024 | ECL | M | 2,235 | · | · | 2,234 Direct | -50.01% | Disposed | (price as of 2026-10-05) |
| March 1, 2024 | ECL | M | 1,500 | $119.12 | $178,680 | 1,576 Direct | -48.76% | Disposed | 130.4% (price as of 2026-10-05) |
| Feb. 25, 2024 | ECL | M | 169 | · | · | 7,583 Direct | +2.28% | Acquired | (price as of 2026-10-05) |
| Feb. 25, 2024 | ECL | F | 48 | $220.46 | $10,582 | 7,535 Direct | -0.63% | Disposed | 24.5% (price as of 2026-10-05) |
| Feb. 25, 2024 | ECL | M | 169 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 21, 2024 | ECL | A | 744 | · | · | 7,667 Direct | +10.75% | Acquired | (price as of 2026-10-05) |
| Feb. 21, 2024 | ECL | F | 253 | $216.66 | $54,815 | 7,414 Direct | -3.30% | Disposed | 26.7% (price as of 2026-10-05) |
| Feb. 1, 2024 | ECL | M | 1,500 | $119.12 | $178,680 | 9,054 Direct | +19.86% | Acquired | 130.4% (price as of 2026-10-05) |
| Feb. 1, 2024 | ECL | F | 1,012 | $224.49 | $227,184 | 8,042 Direct | -11.18% | Disposed | 22.2% (price as of 2026-10-05) |
| Dec. 6, 2023 | ECL | A | 11,605 | · | · | 11,605 Direct | · | Acquired | (price as of 2026-10-05) |
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 |
|---|---|---|---|---|---|---|---|
| May 4, 2026 | ECL | Restricted Stock Units | Common Stock | · | May 4, 2026 | 8,396 | Disposed |
| Feb. 26, 2026 | ECL | Employee Stock Option (Right to Buy) | Common Stock | $137.09 | Dec. 6, 2027 | 3,800 | Disposed |
| Dec. 3, 2025 | ECL | Employee Stock Option (Right to Buy) | Common Stock | $268.52 | Dec. 3, 2035 | 8,661 | Acquired |
| May 15, 2025 | ECL | Employee Stock Option (Right to Buy) | Common Stock | $117.73 | Dec. 7, 2026 | 2,234 | Disposed |
| Dec. 4, 2024 | ECL | Employee Stock Option (Right to Buy) | Common Stock | $247.50 | Dec. 4, 2034 | 8,272 | Acquired |
| Aug. 29, 2024 | ECL | Employee Stock Option (Right to Buy) | Common Stock | $119.12 | Dec. 2, 2025 | 1,576 | Disposed |
| Aug. 29, 2024 | ECL | Employee Stock Option (Right to Buy) | Common Stock | $117.73 | Dec. 7, 2026 | 2,235 | Disposed |
| March 1, 2024 | ECL | Employee Stock Option (Right to Buy) | Common Stock | $119.12 | Dec. 2, 2025 | 1,500 | Disposed |
| Feb. 25, 2024 | ECL | Restricted Stock Units | Common Stock | · | Feb. 25, 2024 | 169 | Disposed |
| Dec. 6, 2023 | ECL | Employee Stock Option (Right to Buy) | Common Stock | $191.03 | Dec. 6, 2033 | 11,605 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 12 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Aug. 10, 2023 | ECL | Common Stock | 6,907 | Direct |
| Aug. 10, 2023 | ECL | Common Stock | 3,299 | Indirect |
| Aug. 10, 2023 | ECL | Employee Stock Option (Right to Buy) | 3,076 | Direct |
| Aug. 10, 2023 | ECL | Employee Stock Option (Right to Buy) | 4,469 | Direct |
| Aug. 10, 2023 | ECL | Employee Stock Option (Right to Buy) | 3,800 | Direct |
| Aug. 10, 2023 | ECL | Employee Stock Option (Right to Buy) | 2,714 | Direct |
| Aug. 10, 2023 | ECL | Employee Stock Option (Right to Buy) | 2,723 | Direct |
| Aug. 10, 2023 | ECL | Employee Stock Option (Right to Buy) | 3,384 | Direct |
| Aug. 10, 2023 | ECL | Employee Stock Option (Right to Buy) | 7,029 | Direct |
| Aug. 10, 2023 | ECL | Employee Stock Option (Right to Buy) | 14,115 | Direct |
| Aug. 10, 2023 | ECL | Restricted Stock Units | 169 | Direct |
| Aug. 10, 2023 | ECL | Restricted Stock Units | 8,396 | Direct |