Summary
Updated Aug 30, 2026
Gregory B. Cook is Co-COO - Global Businesses of ECOLAB INC. (ECL). 5 SEC Form 4 filings on record going back to 2024, most recently on 11 August 2026. Most recent open-market trade: sold $1.30M of ECL on 11 August 2026. Lifetime open-market sales: $2.37M.
Recent Transactions
7Every recent SEC Form 4 transaction Gregory B. Cook has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Gregory B. Cook files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Christophe Beck - $16.83M of ECL open-market activity in the last 12 months
- Nicholas J. Alfano - $2.88M of ECL open-market activity in the last 12 months
- Darrell R. Brown - $2.61M of ECL open-market activity in the last 12 months
- Michel D. Doukeris - $2.00M of ECL open-market activity in the last 12 months
- Scott D. Kirkland - $930K of ECL open-market activity in the last 12 months
- David Maclennan - $456K of ECL open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Gregory B. Cook?
Gregory B. Cook is a corporate insider, tracked as Co-COO - Global Businesses of ECOLAB INC. (ECL). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Gregory B. Cook submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Gregory B. Cook been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($2.37M) across all tracked filings.
Where can I see all of Gregory B. Cook's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Follow Gregory B. Cook and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial
