[144] ATI Inc. SEC Filing

Rhea-AI Filing Summary

Form 144 notice by an insider of ATI Inc. (ATI) reports a proposed sale of 15,941 common shares through Fidelity Brokerage Services with an aggregate market value of $1,235,746.32. The filing lists the issuer's total shares outstanding as 137,832,132 and an approximate sale date of 09/09/2025 on the NYSE. The securities to be sold were acquired via restricted stock vesting on 02/24/2023 (3,288 shares), 01/03/2024 (3,477 shares) and 01/04/2024 (9,176 shares), and were issued as compensation. The filer certifies they are not aware of undisclosed material adverse information and that no securities were sold in the past three months. This is a routine regulatory notice documenting an insider's intent to sell vested, compensatory shares.

Positive

• Compliance with Rule 144 disclosure by providing broker, aggregate value, and approximate sale date
• Securities originated from restricted stock vesting as compensation, not from market purchases or gifts
• No sales in the past three months reported for the filer, per the form

Negative

• Proposed insider sale of 15,941 shares is disclosed (may be perceived negatively by some investors)
• No 10b5-1 plan date provided on the form, so the filing does not indicate a pre-established trading plan

Insights

Securities Analyst

TL;DR: Routine insider sale notice of a small block of vested compensation shares; unlikely to be material to ATI's capitalization.

The filing documents a proposed sale of 15,941 common shares representing a very small fraction of the 137,832,132 shares outstanding. Shares were acquired through restricted stock vesting and were issued as compensation, indicating the sale is of previously granted, non-market purchases. The filing complies with Rule 144 disclosure requirements and includes the broker, aggregate value, and approximate sale date. No securities were reported sold in the prior three months, and the filer affirms lack of undisclosed material adverse information. From a market-impact perspective, the size and nature of the holdings suggest this is a routine liquidity event rather than a signal of corporate distress.

Corporate Governance Expert

TL;DR: Proper Rule 144 disclosure for vested compensation; documents compliance and insider representation about material information.

The disclosure shows the insider is following procedural requirements by notifying the market of a proposed sale and identifying the source of the shares as restricted stock vesting tied to compensation. The form includes required representations about material information and the presence of a broker, which supports transparent execution. There is no indication in the filing of an insider trading plan date or Rule 10b5-1 reliance, and the filer explicitly states no recent sales in the past three months. Governance-wise, this is a standard filing that meets disclosure obligations without revealing unusual governance or compliance issues.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	15941	1235746.32	137832132	09/09/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/24/2023	Restricted Stock Vesting	Issuer			3288	02/24/2023	Compensation
Common	01/03/2024	Restricted Stock Vesting	Issuer			3477	01/03/2024	Compensation
Common	01/04/2024	Restricted Stock Vesting	Issuer			9176	01/04/2024	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What securities does the ATI (ATI) Form 144 propose to sell?

The filing proposes the sale of 15,941 common shares through Fidelity Brokerage Services with an aggregate market value of $1,235,746.32.

When is the proposed sale date listed on the Form 144?

The approximate date of sale is listed as 09/09/2025 and the securities exchange is the NYSE.

How were the shares being sold originally acquired?

All listed shares were acquired via restricted stock vesting on 02/24/2023 (3,288 shares), 01/03/2024 (3,477 shares), and 01/04/2024 (9,176 shares) and were issued as compensation.

How many shares does the issuer report outstanding?

The filing reports 137,832,132 shares outstanding for the issuer.

Did the filer report any securities sold in the past three months?

The Form 144 states Nothing to Report under securities sold during the past three months.

Who is the broker named on the Form 144?

The broker named is Fidelity Brokerage Services LLC, address noted in the filing.