John J. Zillmer
Chief Executive Officer at Aramark
Sits on 3 boards. Last updated September 28, 2026
Time on boards
- Boards served
- 3
- Current seats
- 3
- Board service
- 11 years
- Director since
- 2023
11 years of board service in total across 3 boards, counting each seat separately. Longest: Ecolab Inc., 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
CSX Corporation May 12, 202679.0%
-
Aramark February 3, 202698.7%
-
CSX Corporation May 7, 202575.7%
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Aramark January 24, 202598.2%
-
CSX Corporation May 8, 202475.8%
-
Aramark January 30, 202498.3%
-
CSX Corporation May 10, 202372.1%
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Aramark February 3, 202398.3%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Nov 9, 2026 | Aramark | Grant or award | +245,272 | — | — |
| Oct 26, 2026 | CSX Corporation | Open-market sale | −19,500 | $51.24 | $999,180 |
| Oct 2, 2026 | Aramark | Shares withheld for tax | −67,219 | $54.59 | $3,669,486 |
| Sep 30, 2026 | Ecolab Inc. | Grant or award | +131 | — | — |
| Sep 9, 2026 | Aramark | Grant or award | +918 | — | — |
| Jun 30, 2026 | Ecolab Inc. | Grant or award | +130 | — | — |
| Jun 3, 2026 | Aramark | Grant or award | +974 | — | — |
| Jun 3, 2026 | CSX Corporation | Open-market sale | −10,000 | $46.45 | $464,500 |
| Mar 31, 2026 | Ecolab Inc. | Grant or award | +138 | — | — |
| Mar 4, 2026 | Aramark | Grant or award | +1,265 | — | — |
| Mar 2, 2026 | CSX Corporation | Gift | −5,850 | — | — |
| Feb 26, 2026 | CSX Corporation | Grant or award | +4,455 | — | — |
| Feb 26, 2026 | CSX Corporation | Grant or award | +5,862 | — | — |
| Feb 13, 2026 | Ecolab Inc. | Option exercise | +2,300 | $115.08 | $264,684 |
| Feb 13, 2026 | Ecolab Inc. | Shares withheld for tax | −879 | $301.02 | $264,597 |
Questions about John J. Zillmer
What boards is John J. Zillmer on?
John J. Zillmer sits on the boards of Aramark, CSX Corporation and Ecolab Inc.
What company is John J. Zillmer the CEO of?
John J. Zillmer is Chief Executive Officer of Aramark.
How long has John J. Zillmer served on boards?
Our records show at least 11 years of board service across 3 boards, the earliest from 2023.
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