Summary
Updated Aug 30, 2026
John J. Zillmer files SEC Form 4 reports at ECOLAB INC. (ECL). 27 SEC Form 4 filings on record going back to 2024, most recently on 2 July 2026. Most recent open-market trade: sold $464K of CSX on 4 June 2026. Lifetime open-market purchases: $250K. Lifetime open-market sales: $464K.
Recent Transactions
20Every recent SEC Form 4 transaction John J. Zillmer has reported, most recent first.
Trading Pattern
InsiderAlpha's records for John J. Zillmer go back to 2024: 27 primary Form 4 filings, an average of 9.0 per year. The typical open-market purchase is $250K (1 buy totaling $250K). The largest single buy on record is $250K of ARMK in 2025. Sales side: 1 recorded sale totaling $464K, so the filing history runs sell-heavy by dollar value. 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 John J. Zillmer 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
- Kevin S. Boone - $7.50M of CSX open-market activity in the last 12 months
- Diana B. Sorfleet - $6.24M of CSX open-market activity in the last 12 months
- Marc A. Bruno - $4.31M of ARMK open-market activity in the last 12 months
- Stephen F. Angel - $3.03M of CSX open-market activity in the last 12 months
- Nicholas J. Alfano - $2.88M 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 John J. Zillmer?
John J. Zillmer is a corporate insider of ECOLAB INC. (ECL). InsiderAlpha holds 27 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 John J. Zillmer submitted recently?
3 primary Form 4 filings in the last 90 days, covering 3 companies.
Has John J. Zillmer been buying or selling stock?
Recorded transactions: 1 open-market purchase ($250K) and 1 open-market sale ($464K) across all tracked filings.
Where can I see all of John J. Zillmer'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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