Form4insider filings, from the source

Company · CIK 0001708035 · SIC 2800 — Chemicals & Allied Products · NYSE

Ecovyst Inc. · ECVT

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $250k · 1sales $0 · 0net $250k
$10k$10k$100k$100k$1M$1MbuyssalesAug 28Sep 2Sep 7Sep 12Sep 17Sep 23Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 10, 2026 PForm 4 →Sep 14, 4:00 pm EDTPatti A. HumbleDirector24,875$10.05$249,99433,974+273%

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.