FIELDS KIMBERLY A (EVP, Flat Rolled Products) received a stock award from ATI INC

Compensation award — not an open‑market transaction. Less informative as a directional signal.

A · 2 awards

FIELDS KIMBERLY A

Filed: 1/7/2026ACC: 0001193125-26-006557

InsiderFIELDS KIMBERLY ACIK 1773072

→

IssuerATI INCCIK 1018963

Officer· EVP, Flat Rolled Products

Since Apr 2019

+79.20K

Net shares

Net buyer

$9.47M

Total sold

Open market trades

0B · 0S

Total transactions

193.35K acquired · 114.15K disposed

Non-Derivative Transactions6

Common Stock, par value $0.10 per share

Direct

A · Award

+12.51K

Price / share

—

Trade value

—

% of position

6.2%

1/5/2026

202.67K→215.18K

Common Stock, par value $0.10 per share

Direct

M · Option Exercise

+98.62K

Price / share

—

Trade value

—

% of position

45.8%

1/5/2026

215.18K→313.80K

Common Stock, par value $0.10 per share

Direct

F · Tax Withholding

−38.87K

Price / share

$121.08

Trade value

$4.71M

% of position

12.4%

1/5/2026

313.80K→274.93K

Common Stock, par value $0.10 per share

Direct

A · Award

+82.22K

Price / share

—

Trade value

—

% of position

29.9%

1/5/2026

274.93K→357.14K

Common Stock, par value $0.10 per share

Direct

F · Tax Withholding

−32.35K

Price / share

$121.08

Trade value

$3.92M

% of position

9.1%

1/5/2026

357.14K→324.79K

Common Stock, par value $0.10 per share

Direct

F · Tax Withholding

−7.03K

Price / share

$121.08

Trade value

$850.95K

% of position

2.2%

1/5/2026

324.79K→317.76K

Total

Net shares

+115.09K

Net value

-$9.47M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock, par value $0.10 per share Direct	1/5/2026	A · Award	+12.51K	—	—	6.2%	202.67K	215.18K
Common Stock, par value $0.10 per share Direct	1/5/2026	M · Option Exercise	+98.62K	—	—	45.8%	215.18K	313.80K
Common Stock, par value $0.10 per share Direct	1/5/2026	F · Tax Withholding	−38.87K	$121.08	$4.71M	12.4%	313.80K	274.93K
Common Stock, par value $0.10 per share Direct	1/5/2026	A · Award	+82.22K	—	—	29.9%	274.93K	357.14K
Common Stock, par value $0.10 per share Direct	1/5/2026	F · Tax Withholding	−32.35K	$121.08	$3.92M	9.1%	357.14K	324.79K
Common Stock, par value $0.10 per share Direct	1/5/2026	F · Tax Withholding	−7.03K	$121.08	$850.95K	2.2%	324.79K	317.76K
Total			+115.09K		-$9.47M

Derivative Transactions1

Performance Stock Unit

Direct

M · Option Exercise

Converts to

Common Stock, par value $0.10 per share

98.62K shares

−35.90K

Strike price

0.00

Held after

35.90K

Exercisable

—

1/5/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Performance Stock Unit Direct	Common Stock, par value $0.10 per share98.62K shares	1/5/2026	M · Option Exercise	−35.90K	0.00	—	35.90K