Form 4 for ATI ATI INC
Accepted 2026-05-12 18:15:17 ET · period of report 2026-05-11 · accession 0001193125-26-220013 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MT | 2026-05-12 18:15 | 2026-05-11 | ATI | Fields Kimberly A | Pres, CEO, Dir | S - Sale | $159.21 | -40.0K | 277.8K | -13% | -$6.37M |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock, par value $0.10 per share | 2026-05-11 | S | D | 1,300 | $154.02 | 316,463 | D | — | — | (F1) Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes. (F2) The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $153.82 to $154.65. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each specific price within the range reported. |
| 2 | Common | Common Stock, par value $0.10 per share | 2026-05-11 | S | D | 5,568 | $156.29 | 310,895 | D | — | — | (F1) Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes. (F3) The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $155.78 to $156.76. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported. |
| 3 | Common | Common Stock, par value $0.10 per share | 2026-05-11 | S | D | 3,350 | $157.51 | 307,545 | D | — | — | (F1) Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes. (F4) The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $156.91 to $157.90. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported. |
| 4 | Common | Common Stock, par value $0.10 per share | 2026-05-11 | S | D | 6,420 | $158.38 | 301,125 | D | — | — | (F1) Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes. (F5) The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $157.91 to $158.88. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported. |
| 5 | Common | Common Stock, par value $0.10 per share | 2026-05-11 | S | D | 2,600 | $159.38 | 298,525 | D | — | — | (F1) Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes. (F6) The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $158.94 to $159.84. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported. |
| 6 | Common | Common Stock, par value $0.10 per share | 2026-05-11 | S | D | 11,982 | $160.60 | 286,543 | D | — | — | (F1) Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes. (F7) The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $159.99 to 160.98. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported. |
| 7 | Common | Common Stock, par value $0.10 per share | 2026-05-11 | S | D | 8,780 | $161.12 | 277,763 | D | — | — | (F1) Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes. (F8) The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $160.99 to 161.38. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported. |