Company

Ecovyst Inc.

ECVT · CIK 0001708035

SEC FORM 4

$249,993.75

Purchase of 24,875 shares at $10.05 per share.

Reporting Person Humble Patti A. · Transaction Code P

Traded Sep 10, 2026 · Disclosed Sep 14, 2026

Source: SEC Form 4 · 0001708035-26-000099 · filed 2026-09-14 · View filing →

SEC FORM 4

$0.00

Acquisition (code A) of 43,353 shares at $0 per share.

Reporting Person Bergman Laurie · Officer Title See Remarks · Transaction Code A

Traded Aug 24, 2026 · Disclosed Aug 26, 2026

Source: SEC Form 4 · 0001193125-26-368534 · filed 2026-08-26 · View filing →