[Form 4] ATI INC Insider Trading Activity

Rhea-AI Filing Summary

ATI Inc. (ATI) reported a change in insider holdings for board member Elizabeth H. Lund. On 11/19/2025, Lund received an annual award of 631 shares of ATI common stock as restricted stock under the company’s 2022 Incentive Plan, granted as part of the director compensation program.

The restricted stock was reported at a grant price of $0, reflecting that it is a compensation award rather than an open-market purchase. Following this grant, Lund beneficially owns 631 shares of ATI common stock, held directly. The award is scheduled to vest on the first anniversary of the grant date.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Lund Elizabeth Hefley

(Last) (First) (Middle)

C/O ATI INC.

2021 MCKINNEY AVE., SUITE 1100

(Street)

DALLAS TX 75201

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ATI INC [ ATI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/19/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.10 per share	11/19/2025		A		631(1)	A	$0	631(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Annual award of restricted stock granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program. The award vests on the first anniversary of the grant date.

2. Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.

	/s/ Amanda J. Skov, Attorney-in-Fact for Elizabeth H. Lund	11/21/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did ATI (ATI) report in this Form 4?

ATI reported that director Elizabeth H. Lund received an annual award of 631 restricted shares of ATI common stock as part of the director compensation program.

When was the ATI director stock award to Elizabeth H. Lund granted?

The restricted stock award to Elizabeth H. Lund was granted on 11/19/2025, as disclosed in the Form 4.

How many ATI shares does Elizabeth H. Lund own after this transaction?

After the reported transaction, Elizabeth H. Lund beneficially owns 631 shares of ATI common stock, held directly.

What type of ATI equity award did Elizabeth H. Lund receive?

She received an annual restricted stock award of 631 shares under ATI’s 2022 Incentive Plan as part of the director compensation program.

Does the ATI restricted stock award to Elizabeth H. Lund have a vesting schedule?

Yes. The filing states that the restricted stock award vests on the first anniversary of the grant date.

Was the ATI director stock award an open-market purchase?

No. The award was reported at a price of $0 per share and is described as an annual restricted stock grant under the 2022 Incentive Plan, indicating it is compensation rather than a market purchase.