Updated Jul 16, 2026 · Last SEC filing 2026-07-09
ATI INC (ATI) has filed 14 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-09. 5 Form 8-K material event filings were reported by ATI in the last 90 days. 7 Form 144 notices of proposed sale were filed for ATI stock. InsiderAlpha tracks every ATI SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Steel Pipe & Tubes (SIC 3317) |
|---|---|
| SEC CIK | 0001018963 |
| Form 4 filings (90d) | 14 |
|---|---|
| Form 8-K filings (90d) | 5 |
| Form 144 notices (90d) | 7 |
| Latest Form 4 filing | 2026-07-09 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 2.2K | $181.36 | $399K | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 400 | $187.50 | $75K | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 388 | $185.10 | $72K | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 15.9K | $183.50 | $2.92M | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 4.9K | $184.34 | $899K | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 200 | $186.36 | $37K | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 11.8K | $182.66 | $2.16M | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 2.0K | $180.00 | $360K | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 2.0K | $179.25 | $358K | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 200 | $180.85 | $36K | SEC | |
| Foster James Robert | SVP, Finance and CFO | M — Option exercise | 163 | $193.82 | $32K | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 3.8K | $197.21 | $746K | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 3.6K | $197.48 | $719K | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 13.3K | $202.48 | $2.69M | SEC | |
| Fields Kimberly A | Chair, President and CEO | S — Open-market sale | 13.2K | $179.71 | $2.37M | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for ATI INC (ATI). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Fields Kimberly A | 26 | $28.54M |
| Corvi Carolyn | 1 | — |
| Morehouse David J | 1 | — |
| BALL M LEROY | 1 | — |
| Hess David P | 1 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in ATI insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
Open the live ATI dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.