Gregory B. Cook

Companies

• EcolabChief operating officer May 6, 2026 to now¹
• EcolabEVP & PRES - INST GROUP Aug 10, 2023 to now²

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Ecolab ECL15,298 shares³$4.4M at $287.42Aug 11, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 11, 2026Sold 4,567 shares at $285.13 of Ecolab³
• May 4, 2026Shares withheld for tax 3,829 shares at $257.93 of Ecolab⁴
• May 4, 2026Exercised options 8,396 shares of Ecolab⁴
• Feb 26, 2026Sold 3,519 shares at $304.25 of Ecolab⁵
• Feb 26, 2026Exercised options 3,800 shares at $137.09 of Ecolab⁵
• Feb 18, 2026Shares withheld for tax 1,066 shares at $303.15 of Ecolab⁶
• Feb 18, 2026Granted 3,388 shares of Ecolab⁶
• May 19, 2025Gift 65 shares of Ecolab⁷
• May 15, 2025Sold 2,234 shares at $253.00 of Ecolab⁸
• May 15, 2025Exercised options 2,234 shares at $117.73 of Ecolab⁸
• Feb 19, 2025Shares withheld for tax 490 shares at $265.19 of Ecolab⁹
• Feb 19, 2025Granted 1,546 shares of Ecolab⁹
• Aug 29, 2024Sold 3,811 shares at $249.33 of Ecolab¹⁰
• Aug 29, 2024Exercised options 2,235 shares at $117.73 of Ecolab¹⁰
• Aug 29, 2024Exercised options 1,576 shares at $119.12 of Ecolab¹⁰
• Feb 25, 2024Shares withheld for tax 48 shares at $220.46 of Ecolab¹¹
• Feb 25, 2024Exercised options 169 shares of Ecolab¹¹
• Feb 21, 2024Shares withheld for tax 253 shares at $216.66 of Ecolab¹²
• Feb 21, 2024Granted 744 shares of Ecolab¹²
• Feb 1, 2024Shares withheld for tax 1,012 shares at $224.49 of Ecolab¹³
• Feb 1, 2024Exercised options 1,500 shares at $119.12 of Ecolab¹³

Trade performance

Returns are price-only (no dividends), measured from the trade date.