ATI files Form 144 to sell 3,641 vested shares

Company ATI filed a Form 144 reporting a proposed sale of 3,641 shares of Common Stock that vested as restricted stock on 01/03/2026.

Rhea-AI Filing Summary

Company ATI filed a Form 144 reporting a proposed sale of 3,641 shares of Common Stock that vested as restricted stock on 01/03/2026. The filing lists Fidelity Brokerage Services LLC as the broker and shows the notice date 06/23/2026. The filing also discloses prior related sales in the last three months: 40,000 shares on 05/11/2026, 59,749 shares on 06/02/2026, and 13,269 shares on 06/22/2026, each with the reported gross proceeds.

Insights

Securities Counsel

Form 144 notifies the market of an affiliate's planned resale of vested restricted shares via a broker.

The filing lists 3,641 shares of Common Stock tied to a 01/03/2026 restricted stock vesting and names Fidelity Brokerage Services LLC as broker with a filing/notice date of 06/23/2026. This is a procedural disclosure required when an affiliate intends to resell restricted or control securities.

Cash‑flow treatment and exact timing of execution are not specified in the excerpt; subsequent trade reports or a Form 4/5 would show executed transactions and resulting holdings.

Key Figures

Noticed shares to be sold: 3,641 shares Prior sale: 40,000 shares Prior sale: 59,749 shares +2 more

5 metrics

Noticed shares to be sold 3,641 shares Restricted Stock Vesting on 01/03/2026

Prior sale 40,000 shares Sale on 05/11/2026, gross proceeds $6,368,283.35

Prior sale 59,749 shares Sale on 06/02/2026, gross proceeds $10,699,079.13

Prior sale 13,269 shares Sale on 06/22/2026, gross proceeds $2,686,707.12

Form notice date 06/23/2026 Form 144 filing/notice date listed in excerpt

Key Terms

Form 144, Restricted Stock Vesting, Broker

3 terms

Form 144 regulatory

"Filed Form 144 reporting intent to sell (fragment)"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Vesting financial

"Restricted Stock Vesting | Issuer | 01/03/2026"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Broker market

"Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917"

A broker is a licensed professional or firm that helps investors buy and sell financial assets by executing trades on their behalf, acting like a marketplace agent or matchmaker between buyers and sellers. Brokers matter to investors because they provide access to markets, handle order execution and paperwork, and can offer research or advice—services that affect trade speed, costs, and the quality of investment decisions.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did ATI's Form 144 report?

It reported intent to sell 3,641 shares of Common Stock that vested as restricted stock on 01/03/2026. The filing lists Fidelity Brokerage Services LLC and a notice date of 06/23/2026.

Who is the broker listed on the Form 144 for ATI?

Fidelity Brokerage Services LLC is listed as the broker, with an address shown as 900 Salem Street, Smithfield, RI in the excerpt and the filing date 06/23/2026.

What prior insider sales does the filing disclose for ATI?

Three prior sales are disclosed: 40,000 shares on 05/11/2026, 59,749 shares on 06/02/2026, and 13,269 shares on 06/22/2026, with gross proceeds reported for each transaction.

Does the Form 144 confirm the sales were completed?

No — it reports an intended resale/notice. The excerpt shows the proposed sale notice and prior sales history; completion details would appear in subsequent trade reports or other filings.

Was the 3,641-share amount related to compensation?

Yes. The excerpt ties the 3,641 shares to a Restricted Stock Vesting event dated 01/03/2026, and labels the source as Compensation.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/23/2026 - 09:50 AM Learn about SEC filing dates

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	0001773072
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ATI INC
SEC File Number	001-12001
Address of Issuer	2021 MCKINNEY AVENUE DALLAS TEXAS 75201
Phone	4123942800
Name of Person for Whose Account the Securities are To Be Sold	Fields Kimberly A
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	Officer
Relationship to Issuer	Director

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	3641	719024.68	136470427	06/23/2026	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	01/03/2026	Restricted Stock Vesting	Issuer			3641	01/03/2026	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Kimberly A. Fields 2021 McKinney Avenue Dallas TX 75201	Common	05/11/2026	40000	6368283.35
Kimberly A. Fields 2021 McKinney Avenue Dallas TX 75201	Common	06/02/2026	59749	10699079.13
Kimberly A. Fields 2021 McKinney Avenue Dallas TX 75201	Common	06/22/2026	13269	2686707.12

144: Remarks and Signature

Remarks
Date of Notice	06/23/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	02/05/2026
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	/s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Kimberly A. Fields
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)