17 insiders reported 121 Form 4 transactions for ATI INC (ATI) over the past 18 months (most recent 2026-08-19). Recent activity: Fields Kimberly A (Chair, President and CEO) Sell 1,000 shares, Fields Kimberly A (Chair, President and CEO) Sell 2,000 shares, Fields Kimberly A (Chair, President and CEO) Sell 8,131 shares, Fields Kimberly A (Chair, President and CEO) Sell 9,116 shares, Fields Kimberly A (Chair, President and CEO) Sell 4,598 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-19 | Fields Kimberly A | Chair, President and CEO | Sell | 1,000 | $228,320 |
| 2026-08-19 | Fields Kimberly A | Chair, President and CEO | Sell | 2,000 | $459,120 |
| 2026-08-19 | Fields Kimberly A | Chair, President and CEO | Sell | 8,131 | $1.9M |
| 2026-08-19 | Fields Kimberly A | Chair, President and CEO | Sell | 9,116 | $2.1M |
| 2026-08-19 | Fields Kimberly A | Chair, President and CEO | Sell | 4,598 | $1.1M |
| 2026-07-30 | Fields Kimberly A | Chair, President and CEO | Sell | 31,757 | $6.1M |
| 2026-07-09 | Fields Kimberly A | Chair, President and CEO | Sell | 4,878 | $899,211 |
| 2026-07-09 | Fields Kimberly A | Chair, President and CEO | Sell | 2,000 | $360,000 |
| 2026-07-09 | Fields Kimberly A | Chair, President and CEO | Sell | 200 | $36,170 |
| 2026-07-09 | Fields Kimberly A | Chair, President and CEO | Sell | 2,200 | $398,992 |
| 2026-07-09 | Fields Kimberly A | Chair, President and CEO | Sell | 11,826 | $2.2M |
| 2026-07-09 | Fields Kimberly A | Chair, President and CEO | Sell | 15,908 | $2.9M |
| 2026-07-09 | Fields Kimberly A | Chair, President and CEO | Sell | 2,000 | $358,500 |
| 2026-07-09 | Fields Kimberly A | Chair, President and CEO | Sell | 388 | $71,819 |
| 2026-07-09 | Fields Kimberly A | Chair, President and CEO | Sell | 200 | $37,272 |
| 2026-07-09 | Fields Kimberly A | Chair, President and CEO | Sell | 400 | $75,000 |
| 2026-07-06 | Foster James Robert | SVP, Finance and CFO | Sell | 163 | $31,593 |
| 2026-06-24 | Fields Kimberly A | Chair, President and CEO | Sell | 13,269 | $2.7M |
| 2026-06-24 | Fields Kimberly A | Chair, President and CEO | Sell | 3,641 | $719,025 |
| 2026-06-24 | Fields Kimberly A | Chair, President and CEO | Sell | 3,783 | $746,045 |
| 2026-06-04 | Fields Kimberly A | Chair, President and CEO | Sell | 25,823 | $4.6M |
| 2026-06-04 | Fields Kimberly A | Chair, President and CEO | Sell | 13,865 | $2.5M |
| 2026-06-04 | Fields Kimberly A | Chair, President and CEO | Sell | 13,164 | $2.4M |
| 2026-06-04 | Fields Kimberly A | Chair, President and CEO | Sell | 1,896 | $342,797 |
| 2026-06-04 | Fields Kimberly A | Chair, President and CEO | Sell | 2,000 | $363,800 |
Source: SEC Form 4 filings · as of 2026-08-19