Grewal Manpreet

Row 1 · 2020-02-25 · Grant · Acquired 2,713 · Balance 23,847

F1: Represents the number of shares issued to Reporting Person as a result of the vesting of restricted stock units awarded to Reporting Person by Issuer pursuant to a growth equity award agreement dated March 2, 2017.

Row 2 · 2020-02-25 · Tax withholding · Disposed 1,063 · Balance 22,784

F2: Represents number of shares withheld for payment of taxes incident to the vesting of the restricted stock units described in footnote (1).

Row 1 · 2026-07-14 · Exercise / conversion · Acquired 22,637 · Balance 22,637

Row 2 · 2026-07-14 · Tax withholding · Disposed 5,513 · Balance 17,124

F1: Shares withheld by HP to satisfy tax withholding upon vesting.

Row 3 · 2026-07-14 · Exercise / conversion · Disposed 22,637 · Balance 45,272

F2: Each restricted stock unit ("RSU") represents a contingent right to receive one share of HP common stock.

F3: As previously reported, on 7/14/2025, the reporting person was granted 64,438 RSUs, 1/3 of which vest annually over 3 years on the anniversary of 7/14/2025. Dividend equivalent units ("DEUs") accrue with respect to these RSUs when and as dividends are paid on HP common stock. The number of derivative securities in column 5 includes 1,158 vested DEUs.

F4: The 45,272 shares reported in column 9 includes 2,313 unvested DEUs.

Row 1 · 2025-06-18 · Disposition to issuer · Disposed 69,206 · Balance 0

F2: Reflects (i) shares of common stock of the Company, par value $1.00 (the "Shares"), held directly by the reporting person, (ii) restricted stock units previously granted to the reporting person, and (iii) ROCE-based and TSR-based performance stock units previously granted to the reporting person that relate to performance periods that were completed prior to the Effective Time that, in each case, as of immediately prior to the Effective Time, were converted into the right to receive $55 in cash per Share (the "Per Share Merger Consideration"), less any applicable tax withholdings in accordance with the terms of the Merger Agreement.

F1: On June 18, 2025, United States Steel Corporation (the "Company") consummated the merger transaction (the "Merger") contemplated by that certain Agreement and Plan of Merger (the "Merger Agreement"), dated as of December 18, 2023, by and among Nippon Steel North America, Inc., a New York corporation ("Parent"), 2023 Merger Subsidiary, Inc., a Delaware corporation and a wholly owned subsidiary of Parent, and the Company. The effective time of the Merger is referred to herein as the "Effective Time".

Row 2 · 2025-06-18 · Grant · Acquired 9,889 · Balance 9,889

F3: Reflects the acquisition of ROCE-based and TSR-based performance stock units and other performance-based stock awards (collectively, "PSUs") that were deemed to have been earned as of immediately prior to the Effective Time in accordance with the terms of the Merger Agreement.

Row 3 · 2025-06-18 · Disposition to issuer · Disposed 9,889 · Balance 0

F4: Immediately prior to the Effective Time, in accordance with the terms of the Merger Agreement, each of these PSUs was converted into the right to receive the Per Share Merger Consideration, less any applicable tax withholdings.

F1: On June 18, 2025, United States Steel Corporation (the "Company") consummated the merger transaction (the "Merger") contemplated by that certain Agreement and Plan of Merger (the "Merger Agreement"), dated as of December 18, 2023, by and among Nippon Steel North America, Inc., a New York corporation ("Parent"), 2023 Merger Subsidiary, Inc., a Delaware corporation and a wholly owned subsidiary of Parent, and the Company. The effective time of the Merger is referred to herein as the "Effective Time".

Row 4 · 2025-06-18 · Disposition to issuer · Disposed 2,934.579 · Balance 0

F5: As a result of the Effective Time, each of the Shares that the reporting person previously reported as beneficially owned under the Company's 401(k) retirement plan was liquidated in exchange for the Per Share Merger Consideration.

F1: On June 18, 2025, United States Steel Corporation (the "Company") consummated the merger transaction (the "Merger") contemplated by that certain Agreement and Plan of Merger (the "Merger Agreement"), dated as of December 18, 2023, by and among Nippon Steel North America, Inc., a New York corporation ("Parent"), 2023 Merger Subsidiary, Inc., a Delaware corporation and a wholly owned subsidiary of Parent, and the Company. The effective time of the Merger is referred to herein as the "Effective Time".