U. S. Steel SEC Filings

United States Steel (NYSE: X) Director Paul Anthony Mascarenas reported the disposition of 82,584.806 shares of common stock following the completion of the previously announced merger with Nippon Steel North America on June 18, 2025.

The transaction was executed as part of the $55-per-share cash merger agreement dated December 18, 2023. The disposed shares included:

• Directly held common stock
• Restricted stock units (RSUs)
• Deferred restricted stock units

All equity holdings were converted to cash consideration at the merger's effective time, leaving the director with no remaining beneficial ownership in the company. The Form 4 was filed by power of attorney through Megan Bombick, documenting the final disposition of securities following Nippon Steel's acquisition of United States Steel.

United States Steel Corp (X) Director Murry Gerber reported the disposition of 229,867.571 shares of common stock following the completion of the previously announced merger with Nippon Steel North America on June 18, 2025.

The transaction was executed as part of the merger agreement dated December 18, 2023, where all shares were converted into the right to receive $55.00 per share in cash. The disposed shares included:

• Directly held common stock
• Restricted stock units
• Deferred restricted stock units

Following the transaction, Gerber no longer holds any beneficial ownership in United States Steel Corp. The filing was signed via power of attorney by Megan Bombick. This Form 4 filing reflects the final disposition of the reporting person's holdings as part of Nippon Steel's acquisition of United States Steel.

Form 4 overview: United States Steel Corporation (ticker X) filed an insider transaction report for Director John Engel dated 18 June 2025. The filing discloses the disposition of 99,028.931 shares of U.S. Steel common stock, leaving Engel with 0 shares following the transaction.

Key driver: The shares were not sold on the open market but were automatically converted to cash due to the closing of the previously announced merger with Nippon Steel North America, Inc. Under the Agreement and Plan of Merger signed 18 December 2023, each share was converted into the right to receive $55 in cash at the merger’s Effective Time on 18 June 2025.

Investor take-aways:

• The filing confirms legal completion of the $55-per-share all-cash acquisition; U.S. Steel common stockholders, including directors, have been cashed out.
• No additional derivative securities or continuing ownership were reported, indicating Engel no longer has an equity stake in the post-merger entity.
• Because the merger terms and price were previously disclosed, the Form 4 primarily serves as procedural confirmation rather than new fundamental information.

United States Steel Corp (X) Director Terry L. Dunlap reported the disposition of 27,985 shares of common stock on June 18, 2025, following the completion of the company's merger with Nippon Steel North America.

The transaction occurred as part of the previously announced merger agreement dated December 18, 2023, where all shares were converted into the right to receive $55.00 in cash per share at the effective time of the merger. Following the transaction, Dunlap no longer holds any shares of the company.

Key details of the filing:

• Transaction Type: Disposition due to merger completion
• Shares Affected: 27,985 shares of common stock
• Transaction Price: $55.00 per share cash consideration
• Post-Transaction Holdings: 0 shares
• Filing was signed via Power of Attorney by Megan Bombick

United States Steel Director Alicia J. Davis reported the disposition of 17,948 shares of common stock on June 18, 2025, following the completion of the company's merger with Nippon Steel North America.

The transaction was executed as part of the previously announced merger agreement dated December 18, 2023. Under the terms of the merger, all shares were converted into the right to receive $55.00 in cash per share. Following the transaction, Davis no longer owns any shares of the company.

Key details of the transaction:

• Transaction occurred at the merger's effective time on June 18, 2025
• Included direct holdings of common stock and restricted stock units
• Form filed via power of attorney through Megan Bombick
• Transaction code "D" indicates disposition of securities

United States Steel Corporation (ticker: X) filed a Form 4 disclosing that director Andrea J. Ayers no longer holds any company equity following the closing of the Nippon Steel acquisition.

On 18 June 2025, the company completed the merger contemplated by the 18 December 2023 Agreement and Plan of Merger with Nippon Steel North America, Inc. and its wholly owned subsidiary. At the merger’s effective time, each share of U.S. Steel common stock and each deferred restricted stock unit held by the reporting person was converted into the right to receive $55.00 in cash.

The Form 4 records a single non-derivative transaction coded “D” (disposition):

• 33,809.11 shares of common stock were disposed of on 18 June 2025.
• Post-transaction beneficial ownership: 0 shares.
• Ownership type before disposition: Direct.

No derivative securities were reported as outstanding after the transaction, confirming that the director has fully liquidated her position as a result of the merger consideration being paid in cash.

The filing underscores two key points for investors: (1) the cash-for-stock merger has closed at the agreed $55 price, delivering liquidity to shareholders, and (2) insider equity alignment with the now-private entity ceases, consistent with delisting that typically follows such transactions.

United States Steel Corp (NYSE: X) Director Tracy A. Atkinson reported the disposition of 41,342.155 shares of common stock following the completion of the previously announced merger with Nippon Steel North America on June 18, 2025.

The transaction was executed as part of the $55 per share cash merger agreement dated December 18, 2023, where all shares, restricted stock units, and deferred restricted stock units were converted to cash consideration. Following the transaction, the reporting person no longer holds any shares in the company.

This Form 4 filing represents the final disposition of the director's holdings as part of Nippon Steel North America's acquisition of United States Steel, marking the successful completion of the merger transaction through its subsidiary 2023 Merger Subsidiary Inc.

United States Steel Corporation (NYSE: X) filed a series of Post-Effective Amendment No. 1 (and No. 3 for the oldest registrations) to 24 previously effective Form S-8 registration statements on 18 June 2025. The purpose is to deregister every share of common stock that remained unsold under a wide range of employee equity and savings plans, including the 2002 Stock Plan, 2005 Stock Incentive Plan, 2016 Omnibus Incentive Compensation Plan, multiple 401(k) plans, and other benefit programs.

The filing follows the consummation of the merger between U. S. Steel and Nippon Steel North America, Inc. (a subsidiary of Nippon Steel Corporation) under the Agreement and Plan of Merger dated 18 December 2023. As of 18 June 2025, Merger Sub was merged into U. S. Steel, which now operates as a wholly owned subsidiary of Nippon Steel. In light of the closing, all active offerings under the listed S-8 registrations are terminated and any unsold securities are removed from registration.

Administrative details include:

• All amendments are filed under the Securities Act of 1933 and signed by Senior Vice President & General Counsel Scotland M. Duncan.
• The company was a large accelerated filer at the time of filing.
• No additional financial statements, earnings data, or incremental consideration are provided; the filing solely effects deregistration.

Investor takeaway: The document formally confirms that the public equity of U. S. Steel has been fully absorbed by Nippon Steel, ending the company’s status as an independent, publicly traded issuer and eliminating any residual shares that could have been issued under benefit plans.