Form4insider filings, from the source

Insider · CIK 0001776844

Timothy J Harris

Files at: ATI. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $15.2M · 5net −$15.2M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesAug 23Aug 28Sep 2Sep 7Sep 12Sep 17Sep 22

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Sep 21, 2026 SForm 4 →Sep 23, 10:32 am EDTATI INCATI9,000$191.82$1,726,38088,187−9.26%10b5-1
Sep 14, 2026 SForm 4 →Sep 16, 8:20 pm EDTATI INCATI16,500$193.06$3,185,49097,187−14.5%10b5-1
Sep 8, 2026 SForm 4 →Sep 10, 4:12 pm EDTATI INCATI16,500$207.54$3,424,410113,687−12.7%10b5-1
Aug 31, 2026 SForm 4 →Sep 2, 5:41 pm EDTATI INCATI16,500$210.01$3,465,165130,187−11.2%10b5-1
Aug 24, 2026 SForm 4 →Aug 26, 3:57 pm EDTATI INCATI16,500$206.92$3,414,180146,687−10.1%10b5-1

Reported trades — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.