John J. Zillmer is Director at ECOLAB INC. (ECL). They have made 11 open-market trades across 4 companies since 2006, most recently 2026-09-30.
CIK 0001188262
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
5 open-market purchases totalling $3.9M since 2006, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ARMK | 1,020,873 | $56.5M |
| CSX | 353,714 | $17.2M |
| ECL | 49,540 | $14.3M |
| RAI | 114,000 | $7.5M |
| VRTV | 11,773 | $2.0M |
| PFGC | 17,742 | $1.7M |
| PTMK | 8,124 | — |
| USTR | 763 | — |
| AW | 385,741 |
Shares reported on the most recent Form 4, priced at the 2026-10-02 close. 3 holdings could not be priced and are excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CSX | SELL | 2026-06-03 | 2026-06-04 | $46.45 | $465K | +1.3% | +5.5% | +5.1% |
| ARMK | BUY | 2025-08-07 | 2025-08-07 | $39.07 | $499K | -1.1% | -4.0% | -5.6% |
| CSX | SELL | 2022-06-06 | 2022-06-08 | $32.25 | $516K | -8.4% | -8.4% | -0.5% |
| CSX | SELL | 2021-08-24 | 2021-08-26 | $33.54 | $503K | -4.9% | -8.3% | +8.8% |
| CSX | SELL | 2021-07-26 | 2021-07-28 | $32.64 | $2.6M | +1.0% | +4.3% | +11.3% |
| CSX | SELL | 2021-04-22 | 2021-04-26 | $102.92 | $3.5M | +0.5% | -1.6% | -3.4% |
| CSX | SELL | 2020-07-24 | 2020-07-24 | $72.13 | $1.5M | +0.6% | +5.8% | +15.1% |
| ARMK | BUY | 2020-03-11 | 2020-03-11 | $25.82 | $1.0M | -26.8% | -3.7% | +29.7% |
| ARMK | BUY | 2019-11-21 | 2019-11-22 | $42.68 | $1.5M | -2.6% | +0.2% | -1.3% |
| RAI | BUY | 2011-05-18 | 2011-05-18 | $38.75 | $387K | +4.3% | -0.5% | -0.5% |
| AW | BUY | 2006-03-09 | 2006-03-13 | $10.41 | $500K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| — |
| Total | $99.2M |