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37 filings · most recent first

ATI Form 4 Insider Filings

Over the trailing 90 days, ATI insiders sold a net $37.3M in discretionary open-market trades (3 sellers), across 25 Form 4 transactions by 4 insiders.

2026-09-17Harris Timothy J Files Ati Ati Form 4 September 14 2026 2026-09-10Harris Timothy J Files Ati Ati Form 4 September 08 2026 2026-09-04Morehouse David J Files Ati Ati Form 4 September 02 2026 2026-09-02Harris Timothy J Files Ati Ati Form 4 August 31 2026 2026-08-26Harris Timothy J Files Ati Ati Form 4 August 24 2026 2026-08-19Fields Kimberly A Files Ati Ati Form 4 August 17 2026 2026-08-02Fields Kimberly A Files Ati Ati Form 4 July 28 2026 2026-07-09Fields Kimberly A Files Ati Ati Form 4 July 08 2026 2026-07-06Foster James Robert Files Ati Ati Form 4 July 01 2026 2026-06-24Fields Kimberly A Files Ati Ati Form 4 June 22 2026 2026-06-05Fields Kimberly A Files Ati Ati Form 4 June 02 2026 2026-05-21Lydonrodgers Jean Files Ati Ati Form 4 May 19 2026 2026-05-21Lund Elizabeth Hefley Files Ati Ati Form 4 May 19 2026 2026-05-21Sharma Ruby Files Ati Ati Form 4 May 19 2026 2026-05-21Kah Marianne Files Ati Ati Form 4 May 19 2026 2026-05-21Carlisle Herbert J Files Ati Ati Form 4 May 19 2026 2026-05-21Morehouse David J Files Ati Ati Form 4 May 19 2026 2026-05-21Corvi Carolyn Files Ati Ati Form 4 May 19 2026 2026-05-21Hess David P Files Ati Ati Form 4 May 19 2026 2026-05-21Ball M Leroy Files Ati Ati Form 4 May 19 2026 2026-05-12Fields Kimberly A Files Ati Ati Form 4 May 11 2026 2026-03-24Bhatia Vaishali S Files Ati Ati Form 4 March 20 2026 2026-03-11Morehouse David J Files Ati Ati Form 4 March 09 2026 2026-03-04Miller Michael Benjamin Files Ati Ati Form 4 March 02 2026 2026-02-23Wetherbee Robert S Files Ati Ati Form 4 February 17 2026 2026-02-23Foster James Robert Files Ati Ati Form 4 January 05 2026 2026-02-23Wetherbee Robert S Files Ati Ati Form 4 January 05 2026 2026-02-23Miller Michael Benjamin Files Ati Ati Form 4 January 05 2026 2026-02-23Fields Kimberly A Files Ati Ati Form 4 January 05 2026 2026-02-23Harris Timothy J Files Ati Ati Form 4 January 05 2026 2026-02-23Bhatia Vaishali S Files Ati Ati Form 4 January 05 2026 2026-02-23Wetherbee Robert S Files Ati Ati Form 4 December 02 2025 2026-02-23Fields Kimberly A Files Ati Ati Form 4 December 05 2025 2026-02-23Bhatia Vaishali S Files Ati Ati Form 4 December 05 2025 2026-02-23Harris Timothy J Files Ati Ati Form 4 December 05 2025 2026-02-23Miller Michael Benjamin Files Ati Ati Form 4 December 05 2025 2026-02-23Harris Timothy J Files Ati Ati Form 4 November 25 2025

Most Active Insiders (Trailing 90 Days)

Fields Kimberly A · 19 txns−$23.3M Harris Timothy J · 4 txns−$13.5M Morehouse David J · 1 txn−$501K Foster James Robert · 1 txn−$32K

Detected Clusters

Cluster selling: 6 insiders, $38.4M total, through Jan 12, 2026 — live cluster view →
Cluster selling: 4 insiders, $8.2M total, through Nov 25, 2025 — live cluster view →
Cluster selling: 3 insiders, $8.0M total, through Nov 18, 2025 — live cluster view →

ATI full research: price, insiders, financials →