SEC Form 4 · Updated Daily
ATI
— ATI INC OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| WETHERBEE ROBERT S | Director · Officer | 280,061.341 | 2026-02-17 | S |
| Harris Timothy J | Officer | 113,687 | 2026-09-08 | S |
| Fields Kimberly A | Director · Officer | 100,719 | 2026-08-17 | S |
| Corvi Carolyn | Director | 71,145.693 | 2026-05-19 | A |
| Bhatia Vaishali S. | Officer | 58,420 | 2026-03-20 | F |
| Foster James Robert | Officer | 57,824 | 2026-07-01 | M |
| Carlisle Herbert J | Director | 37,556 | 2026-05-19 | A |
| Morehouse David J | Director | 35,826 | 2026-09-02 | S |
| Kah Marianne | Director | 35,075 | 2026-05-19 | A |
| Hess David P | Director | 34,945 | 2026-05-19 | A |
| BALL M LEROY | Director | 34,737 | 2026-05-19 | A |
| Busch Tina Killough | Officer | 21,274 | 2025-11-21 | S |
| Miller Michael Benjamin | Officer | 7,639 | 2026-03-02 | F |
| Sharma Ruby | Director | 7,285 | 2026-05-19 | A |
| Lund Elizabeth Hefley | Director | 1,536 | 2026-05-19 | A |
| Lydon-Rodgers Jean | Director | 1,536 | 2026-05-19 | A |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-08 | Harris Timothy J | Open-market sale | 16,500 | $207.54 | 113,687 |
| 2026-09-02 | Morehouse David J | Open-market sale | 2,485 | $201.61 | 35,826 |
| 2026-08-31 | Harris Timothy J | Open-market sale | 16,500 | $210.01 | 130,187 |
| 2026-08-24 | Harris Timothy J | Open-market sale | 16,500 | $206.92 | 146,687 |
| 2026-08-17 | Fields Kimberly A | Open-market sale | 4,598 | $232.43 | 100,719 |
| 2026-08-17 | Fields Kimberly A | Open-market sale | 9,116 | $231.72 | 105,317 |
| 2026-08-17 | Fields Kimberly A | Open-market sale | 8,131 | $230.66 | 114,433 |
| 2026-08-17 | Fields Kimberly A | Open-market sale | 2,000 | $229.56 | 122,564 |
| 2026-08-17 | Fields Kimberly A | Open-market sale | 1,000 | $228.32 | 124,564 |
| 2026-07-28 | Fields Kimberly A | Open-market sale | 31,757 | $190.99 | 125,564 |
| 2026-07-07 | Fields Kimberly A | Open-market sale | 400 | $187.50 | 157,321 |
| 2026-07-07 | Fields Kimberly A | Open-market sale | 200 | $186.36 | 157,721 |
| 2026-07-07 | Fields Kimberly A | Open-market sale | 388 | $185.10 | 157,921 |
| 2026-07-07 | Fields Kimberly A | Open-market sale | 4,878 | $184.34 | 158,309 |
| 2026-07-07 | Fields Kimberly A | Open-market sale | 15,908 | $183.50 | 163,187 |
| 2026-07-07 | Fields Kimberly A | Open-market sale | 11,826 | $182.66 | 179,095 |
| 2026-07-07 | Fields Kimberly A | Open-market sale | 2,200 | $181.36 | 190,921 |
| 2026-07-07 | Fields Kimberly A | Open-market sale | 200 | $180.85 | 193,121 |
| 2026-07-07 | Fields Kimberly A | Open-market sale | 2,000 | $180.00 | 193,321 |
| 2026-07-07 | Fields Kimberly A | Open-market sale | 2,000 | $179.25 | 195,321 |
| 2026-07-01 | Foster James Robert | Option exercise | 163 | $193.82 | 57,824 |
| 2026-06-24 | Fields Kimberly A | Open-market sale | 3,783 | $197.21 | 197,321 |
| 2026-06-23 | Fields Kimberly A | Open-market sale | 3,641 | $197.48 | 201,104 |
| 2026-06-22 | Fields Kimberly A | Open-market sale | 13,269 | $202.48 | 204,745 |
| 2026-06-02 | Fields Kimberly A | Open-market sale | 3,001 | $182.75 | 218,014 |
| 2026-06-02 | Fields Kimberly A | Open-market sale | 2,000 | $181.90 | 221,015 |
| 2026-06-02 | Fields Kimberly A | Open-market sale | 1,896 | $180.80 | 223,015 |
| 2026-06-02 | Fields Kimberly A | Open-market sale | 13,164 | $179.71 | 224,911 |
| 2026-06-02 | Fields Kimberly A | Open-market sale | 13,865 | $179.05 | 238,075 |
| 2026-06-02 | Fields Kimberly A | Open-market sale | 25,823 | $177.97 | 251,940 |
| 2026-05-19 | BALL M LEROY | Grant / award | 905 | $0.00 | 34,737 |
| 2026-05-19 | Carlisle Herbert J | Grant / award | 905 | $0.00 | 37,556 |
| 2026-05-19 | Corvi Carolyn | Grant / award | 905 | $0.00 | 71,145.693 |
| 2026-05-19 | Hess David P | Grant / award | 905 | $0.00 | 34,945 |
| 2026-05-19 | Kah Marianne | Grant / award | 905 | $0.00 | 35,075 |
| 2026-05-19 | Lund Elizabeth Hefley | Grant / award | 905 | $0.00 | 1,536 |
| 2026-05-19 | Lydon-Rodgers Jean | Grant / award | 905 | $0.00 | 1,536 |
| 2026-05-19 | Morehouse David J | Grant / award | 1,743 | $0.00 | 38,311 |
| 2026-05-19 | Sharma Ruby | Grant / award | 905 | $0.00 | 7,285 |
| 2026-05-11 | Fields Kimberly A | Open-market sale | 8,780 | $161.12 | 277,763 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.