STOCK TITAN

ATI (ATI) CEO Kimberly Fields sells 40,000 shares in pre-planned 10b5-1 trades

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

ATI Inc. director and Chair, President and CEO Kimberly A. Fields reported open-market sales of a total of 40,000 shares of common stock on July 7, 2026. The transactions were executed under a Rule 10b5-1 Trading Plan entered into on February 5, 2026 for personal tax and estate planning purposes.

The shares were sold in ten tranches at weighted average prices, with individual trades occurring in ranges from $178.71 to $185.02 per share. All reported sales involve directly held common stock and reflect a pre-planned, systematic disposition rather than a discretionary one-time trade.

Positive

  • None.

Negative

  • None.
Insider Fields Kimberly A
Role Chair, President and CEO
Sold 40,000 shs ($7.32M)
Type Security Shares Price Value
Sale Common Stock, par value $0.10 per share 2,000 $179.25 $359K
Sale Common Stock, par value $0.10 per share 2,000 $180.00 $360K
Sale Common Stock, par value $0.10 per share 200 $180.85 $36K
Sale Common Stock, par value $0.10 per share 2,200 $181.36 $399K
Sale Common Stock, par value $0.10 per share 11,826 $182.66 $2.16M
Sale Common Stock, par value $0.10 per share 15,908 $183.50 $2.92M
Sale Common Stock, par value $0.10 per share 4,878 $184.34 $899K
Sale Common Stock, par value $0.10 per share 388 $185.10 $72K
Sale Common Stock, par value $0.10 per share 200 $186.36 $37K
Sale Common Stock, par value $0.10 per share 400 $187.50 $75K
Holdings After Transaction: Common Stock, par value $0.10 per share — 195,321 shares (Direct, null)
Footnotes (1)
  1. Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $178.71 to $179.70. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each specific price within the range reported. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $179.77 to $180.39. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $180.83 to $181.87. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.01 to $181.95. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.06 to $183.01. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $183.07 to 184.06. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.07 to 185.02. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.
Shares sold 40,000 shares Total ATI common stock sold by CEO on July 7, 2026
Number of sale transactions 10 transactions Open-market sales of ATI common stock on July 7, 2026
Lowest sale price range $178.71–$179.70 per share Price range for one weighted-average tranche of ATI share sales
Highest sale price range $184.07–$185.02 per share Price range for a reported weighted-average tranche of sales
Trading plan date February 5, 2026 Date of Rule 10b5-1 Trading Plan covering these ATI sales
Transaction code S (sale) Code for non-derivative open-market or private sale of stock
Rule 10b5-1 Trading Plan regulatory
"Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $178.71 to $179.70."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
open-market sale financial
"transaction_action": "open-market sale","transaction_code_description": "Sale in open market or private transaction""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
personal tax and estate planning purposes financial
"entered into for personal tax and estate planning purposes."
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FAQ

What insider transaction did ATI (ATI) disclose for Kimberly A. Fields?

ATI reported that Chair, President and CEO Kimberly A. Fields sold 40,000 shares of ATI common stock. The sales were open-market transactions executed on July 7, 2026, spread across ten separate tranches at different weighted average prices.

At what prices did Kimberly A. Fields sell ATI (ATI) shares?

Kimberly A. Fields’ ATI share sales occurred at weighted average prices within ranges from $178.71 to $185.02 per share. Each Form 4 line reflects a weighted average price for multiple trades executed within the stated price range.

How many ATI (ATI) shares did Kimberly A. Fields sell in total?

The Form 4 shows that Kimberly A. Fields sold a total of 40,000 shares of ATI common stock. These were reported as ten separate open-market sale transactions, each with its own share amount and weighted average sale price.

Was the ATI (ATI) insider sale by Kimberly A. Fields pre-planned?

Yes. The filing states the shares were sold under a Rule 10b5-1 Trading Plan dated February 5, 2026. Such plans schedule trades in advance, indicating these sales were part of a systematic program rather than spontaneous market timing.

Why did Kimberly A. Fields set up the ATI (ATI) trading plan?

The footnote explains the Rule 10b5-1 Trading Plan was entered into for personal tax and estate planning purposes. This indicates the primary motivation disclosed for the scheduled share sales is personal financial planning rather than company-specific developments.

What type of security did Kimberly A. Fields sell in ATI (ATI)?

All reported transactions involve ATI Inc. common stock with par value $0.10 per share. There were no derivative exercises reported; the filing lists only non-derivative open-market sales of directly held common shares.
SEC Form 4
FORM 4UNITED 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
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
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*
Fields Kimberly A

(Last)(First)(Middle)
C/O ATI INC.
2021 MCKINNEY AVE., SUITE 1100

(Street)
DALLAS TEXAS 75201

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
ATI INC [ ATI ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chair, President and CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/08/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock, par value $0.10 per share07/07/2026S2,000(1)D$179.25(2)195,321D
Common Stock, par value $0.10 per share07/07/2026S2,000(1)D$180(3)193,321D
Common Stock, par value $0.10 per share07/07/2026S200(1)D$180.85(4)193,121D
Common Stock, par value $0.10 per share07/07/2026S2,200(1)D$181.36(5)190,921D
Common Stock, par value $0.10 per share07/07/2026S11,826(1)D$182.66(6)179,095D
Common Stock, par value $0.10 per share07/07/2026S15,908(1)D$183.5(7)163,187D
Common Stock, par value $0.10 per share07/07/2026S4,878(1)D$184.34(8)158,309D
Common Stock, par value $0.10 per share07/07/2026S388D$185.1157,921D
Common Stock, par value $0.10 per share07/07/2026S200D$186.36157,721D
Common Stock, par value $0.10 per share07/07/2026S400D$187.5157,321D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes.
2. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $178.71 to $179.70. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each specific price within the range reported.
3. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $179.77 to $180.39. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.
4. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $180.83 to $181.87. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.
5. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.01 to $181.95. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.
6. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.06 to $183.01. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.
7. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $183.07 to 184.06. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.
8. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.07 to 185.02. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.
/s/ Amanda J. Skov, Attorney-in-Fact for Kimberly A. Fields07/09/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)