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.
Ecolab Inc.
Director
CSX Corporation
Director
Aramark
Director · Chief Executive Officer
Chief executive roles
Aramark
· Chief Executive Officer
Dates unknown
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 |
|---|---|---|---|---|---|
| Feb 24, 2025 | Aramark | Grant or award | +773 | — | — |
| Feb 19, 2025 | Ecolab Inc. | Option exercise | +2,200 | $112.75 | $248,050 |
| Feb 19, 2025 | Ecolab Inc. | Shares withheld for tax | −935 | $265.19 | $247,953 |
| Feb 14, 2025 | CSX Corporation | Grant or award | +5,694 | — | — |
| Feb 14, 2025 | CSX Corporation | Grant or award | +7,492 | — | — |
| Dec 31, 2024 | Ecolab Inc. | Grant or award | +144 | — | — |
| Dec 12, 2024 | Aramark | Grant or award | +710 | — | — |
| Dec 2, 2024 | Aramark | Grant or award | +47,124 | $40.32 | $1,900,040 |
| Nov 27, 2024 | Aramark | Shares withheld for tax | −7,873 | $42.22 | $332,392 |
| Nov 18, 2024 | Aramark | Shares withheld for tax | −11,336 | $37.36 | $423,512 |
| Nov 17, 2024 | Aramark | Shares withheld for tax | −7,688 | $37.36 | $287,232 |
| Nov 4, 2024 | Aramark | Grant or award | +77,092 | — | — |
| Nov 4, 2024 | Aramark | Shares withheld for tax | −94,191 | $38.21 | $3,599,020 |
| Sep 30, 2024 | Ecolab Inc. | Grant or award | +133 | — | — |
| Sep 3, 2024 | Aramark | Grant or award | +1,099 | — | — |
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