Summary
Updated Aug 31, 2026
William H. Gates III is 10% Owner of ECOLAB INC. (ECL). 7 SEC Form 4 filings on record, most recently on 22 November 2024. Most recent open-market trade: sold $29K of ECL on 22 November 2024. Lifetime open-market sales: $494.21M.
Recent Transactions
20Every recent SEC Form 4 transaction William H. Gates III has reported, most recent first.
Trading Pattern
InsiderAlpha's records for William H. Gates III go back to 2024: 7 primary Form 4 filings, an average of 2.3 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies William H. Gates III 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
- Gregory B. Cook - $2.37M 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
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is William H. Gates III?
William H. Gates III is a corporate insider, tracked as 10% Owner of ECOLAB INC. (ECL). InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did William H. Gates III last file a Form 4?
The most recent primary Form 4 on record is dated 22 November 2024, one of 7 filings going back to 2024.
Has William H. Gates III been buying or selling stock?
Recorded transactions: 0 open-market purchases and 52 open-market sales ($494.21M) across all tracked filings.
Where can I see all of William H. Gates III'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.
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