Form4insider filings, from the source

Company · CIK 0000846913 · SIC 3564 — Industrial & Commercial Fans & Blowers & Air Purifing Equip · Nasdaq

FUEL TECH, INC. · FTEK

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

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $2,000 · 1sales $0 · 0net $2,000
$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 1, 2026 PForm 4 →Sep 3, 4:06 pm EDTRamesh NuggihalliPresident & CEO1,471$1.36$2,0001,471—

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

No reported derivative activity in this period.