FOSTER JAMES ROBERT (SVP, Finance and CFO) received a stock award from ATI INC

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

A · 2 awards

FOSTER JAMES ROBERT

Filed: 1/23/2026ACC: 0001193125-26-021290

InsiderFOSTER JAMES ROBERTCIK 2106397

→

IssuerATI INCCIK 1018963

Officer· SVP, Finance and CFO

Since Jan 2026

+2.72K

Net shares

Net buyer

$2.85M

Total sold

Open market trades

0B · 0S

Total transactions

51.91K acquired · 49.19K disposed

Non-Derivative Transactions6

Common Stock, par value $0.10 per share

Direct

A · Award

+3.13K

Price / share

—

Trade value

—

% of position

10.6%

1/5/2026

29.62K→32.75K

Common Stock, par value $0.10 per share

Direct

M · Option Exercise

+42.27K

Price / share

—

Trade value

—

% of position

129.1%

1/5/2026

32.75K→75.01K

Common Stock, par value $0.10 per share

Direct

F · Tax Withholding

−18.45K

Price / share

$121.08

Trade value

$2.23M

% of position

24.6%

1/5/2026

75.01K→56.56K

Common Stock, par value $0.10 per share

Direct

A · Award

+6.52K

Price / share

—

Trade value

—

% of position

11.5%

1/5/2026

56.56K→63.08K

Common Stock, par value $0.10 per share

Direct

F · Tax Withholding

−2.83K

Price / share

$121.08

Trade value

$343.26K

% of position

4.5%

1/5/2026

63.08K→60.24K

Common Stock, par value $0.10 per share

Direct

F · Tax Withholding

−2.26K

Price / share

$121.08

Trade value

$273.16K

% of position

3.7%

1/5/2026

60.24K→57.99K

Total

Net shares

+28.36K

Net value

-$2.85M

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	+3.13K	—	—	10.6%	29.62K	32.75K
Common Stock, par value $0.10 per share Direct	1/5/2026	M · Option Exercise	+42.27K	—	—	129.1%	32.75K	75.01K
Common Stock, par value $0.10 per share Direct	1/5/2026	F · Tax Withholding	−18.45K	$121.08	$2.23M	24.6%	75.01K	56.56K
Common Stock, par value $0.10 per share Direct	1/5/2026	A · Award	+6.52K	—	—	11.5%	56.56K	63.08K
Common Stock, par value $0.10 per share Direct	1/5/2026	F · Tax Withholding	−2.83K	$121.08	$343.26K	4.5%	63.08K	60.24K
Common Stock, par value $0.10 per share Direct	1/5/2026	F · Tax Withholding	−2.26K	$121.08	$273.16K	3.7%	60.24K	57.99K
Total			+28.36K		-$2.85M

Derivative Transactions1

Performance Stock Unit

Direct

M · Option Exercise

Converts to

Common Stock, par value $0.10 per share

70.44K shares

−25.64K

Strike price

0.00

Held after

25.64K

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 share70.44K shares	1/5/2026	M · Option Exercise	−25.64K	0.00	—	25.64K