Key facts
- This page summarizes Timothy J. Harris's Form 4 filing for ATI INC (ATI).
- 7 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 07 Jan 2026, 17:19.
Timothy J. Harris - 05 Jan 2026 Form 4 Insider Report for ATI INC (ATI)
- Reporting relationship
- Senior VP and CDIO
- Issuer ticker
- ATI
- Reported as of
- 05 Jan 2026
- Net transaction value
- -$6,606,125
- SEC form
- 4
- Accepted by SEC
- 07 Jan 2026, 17:19:45 UTC
- Prior SEC filing
- 09 Dec 2025
- Source filing
- View source filing
- Reporting owner signature
- /s/ Amanda J. Skov, Attorney-in-Fact for Timothy J. Harris
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Timothy J. Harris filed Form 4 for ATI INC (ATI) on 07 Jan 2026.
Change
- Previous filing in this sequence was filed on 09 Dec 2025.
- Current net transaction value: -$6,606,125.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001776844
Primary reporting owner
Harris Timothy J
- Relationship
- Senior VP and CDIO
- Address
- C/O ATI INC., 2021 MCKINNEY AVE., SUITE 1100, DALLAS
- Signature
- /s/ Amanda J. Skov, Attorney-in-Fact for Timothy J. Harris
- Signature date
- 07 Jan 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
ATI
transaction
Common Stock, par value $0.10 per share
Award
- Transaction value
- $0
- Shares
- +2,677
- Change %
- +2.7%
- Price
- $0.000000
- Shares after
- 100,987
- Date
- 05 Jan 2026
- Ownership
- Direct
- Footnotes
- F1, F2
ATI
transaction
Common Stock, par value $0.10 per share
Options Exercise
- Transaction value
- $0
- Shares
- +70,442
- Change %
- +70%
- Price
- $0.000000
- Shares after
- 171,429
- Date
- 05 Jan 2026
- Ownership
- Direct
- Footnotes
- F3
ATI
transaction
Common Stock, par value $0.10 per share
Tax liability
- Transaction value
- $3,743,551
- Shares
- -30,918
- Change %
- -18%
- Price
- $121.08
- Shares after
- 140,511
- Date
- 05 Jan 2026
- Ownership
- Direct
- Footnotes
- F4, F5
ATI
transaction
Common Stock, par value $0.10 per share
Award
- Transaction value
- $0
- Shares
- +46,318
- Change %
- +33%
- Price
- $0.000000
- Shares after
- 186,829
- Date
- 05 Jan 2026
- Ownership
- Direct
- Footnotes
- F2, F6
ATI
transaction
Common Stock, par value $0.10 per share
Tax liability
- Transaction value
- $2,455,866
- Shares
- -20,283
- Change %
- -11%
- Price
- $121.08
- Shares after
- 166,546
- Date
- 05 Jan 2026
- Ownership
- Direct
- Footnotes
- F5, F7
ATI
transaction
Common Stock, par value $0.10 per share
Tax liability
- Transaction value
- $406,708
- Shares
- -3,359
- Change %
- -2%
- Price
- $121.08
- Shares after
- 163,187
- Date
- 05 Jan 2026
- Ownership
- Direct
- Footnotes
- F5, F8
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
ATI
transaction
Derivative
Performance Stock Unit
Options Exercise
- Transaction value
- $0
- Shares
- -25,641
- Change %
- -50%
- Price
- $0.000000
- Shares after
- 25,641
- Date
- 05 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock, par value $0.10 per share
- Underlying amount
- 70,442
- Exercise price
- $0.000000
- Footnotes
- F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 8 footnotes
Footnote F1
Award of restricted stock units, which are settled in shares of stock upon vesting. The award vests in three equal annual installments on each of the first three anniversaries of the grant date.
Footnote F2
Awarded under the Issuer's 2022 Incentive Plan.
Footnote F3
Settlement of one-half of certain Performance Stock Units awarded in 2022 ("2022 Breakout Performance Units"), each of which represented a contingent right to receive shares of the Issuer's Common Stock if the Issuer's Common Stock achieved specified target market prices (based on a 20-trading day average) on the New York Stock Exchange ("NYSE") for at least 20 consecutive trading days (the "20-day Average Market Price") prior to December 31, 2025, up to a maximum of three shares per Unit. The shares underlying one-half of the 2022 Breakout Performance Units became payable as of January 5, 2026 following certification of the Issuer's achievement of the relevant performance criteria by the Compensation and Leadership Development Committee of the Company's Board of Directors (the "CLDC"). The remaining half of the 2022 Breakout Performance Units are scheduled by their terms to become payable in early 2027.
Footnote F4
Shares withheld for the payment of taxes in connection with the settlement of 2022 Breakout Performance Units.
Footnote F5
Represents the average of the high and low trading prices for one share of the Issuer's Common Stock on the NYSE on January 5, 2026.
Footnote F6
Settlement of performance-vested restricted stock units that were granted in 2023, the vesting of which was contingent on the Issuer's total shareholder return relative to a specified peer group during the period from January 1, 2023 through December 31, 2025 (the "2023-2025 PSUs"). The shares underlying the 2023-2025 PSUs became payable as of January 5, 2026 following certification of the Issuer's achievement of the relevant performance criteria by the CLDC.
Footnote F7
Shares withheld for the payment of taxes in connection with the settlement of the 2023-2025 PSUs.
Footnote F8
Shares withheld for payment of taxes on restricted stock units awarded in 2023, 2024 and 2025. One third of each such award vested by the terms thereof on January 5, 2026.