Material Modification to Rights of Security Holders. The information set forth in the Introduction and

Director: The filing describes a complete turnover of the board and officers due to a merger, where the old team resigned to be replaced by the acquirer's team, which is a structural change rather than a routine departure or promotion.

Termination of a Material Definitive Agreement. In connection with the Merger, on the Closing Date, the Company terminated its Second Amended and Restated Credit Agreement, dated as of August 23, 2023, among the Company, JPMorgan Chase Bank, N.A., as administrative agent, and the lenders party thereto (as amended, the “Credit Agreement”). The Credit Agreement provided for a $700 million senior secured revolving credit facility and a senior secured term loan facility in the original principal…

In connection with the consummation of the Merger, the Company notified the New York Stock Exchange (the “NYSE”) and the NYSE Texas, Inc. (the “NYSE Texas”) that the Merger had been completed and requested that the NYSE and the NYSE Texas suspend trading of the Common Stock prior to the opening of trading on October 23, 2026 , and that the Common Stock be removed from listing on both the NYSE and the NYSE Texas. The Company also requested that the NYSE and the NYSE Texas each file a notificat…

At the effective time of the Merger (the “Effective Time”), subject to the terms and conditions of the Merger Agreement, each share of Company common stock, par value $0.01 per share (the “Common Stock”), issued and outstanding immediately prior to the Effective Time (other than (i) Company Restricted Stock Awards (as defined below), (ii) shares owned or held in treasury by the Company or owned by Parent or Merger Sub immediately prior to the Effective Time, and (iii) shares issued and outsta…

Pursuant to the terms of the Merger Agreement , at the Effective Time, the Company became a wholly-owned subsidiary of Parent and, accordingly, a change in control of the Company occurred. Parent obtained the funds to pay the Merger Consideration through the proceeds of the loans under a $3.25 billion bridge facility agreement and a $2.5 billion term loan facility each entered into with J.P. Morgan SE as agent and certain lenders, together with cash on hand .

Results of Operation and Financial Condition. Attached as Exhibit 99.1 is the registrant’s earnings release for the second quarter of 2026, issued August 5, 2026. This release is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise incorporated by reference into any filing pursuant to the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as otherwise expressl…

Entry into a Material Definitive Agreement. On June 21, 2026, Arcosa, Inc., a Delaware corporation (“Arcosa” or the “Company”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) by and among the Company, CRH Americas, Inc., a Delaware corporation (“Parent”), and Neon Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Parent (“Merger Sub”). Pursuant to the Merger Agreement, and subject to the terms and conditions set forth therein, Merger Sub will mer…

Results of Operation and Financial Condition. Attached as Exhibit 99.1 is the registrant’s earnings release for the first quarter of 2026, issued April 30, 2026. This release is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise incorporated by reference into any filing pursuant to the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as otherwise expressly…

Results of Operation and Financial Condition. Attached as Exhibit 99.1 is the registrant’s earnings release for the fourth quarter and full year of 2025, issued February 26, 2026. This release is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise incorporated by reference into any filing pursuant to the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as o…

Group President — Jesse E. Collins, Jr.: Mr. Collins retired from his position as Group President.

of this report is being furnished and shall not be deemed to be filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise be subject to the liabilities of that section, nor shall it be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise expressly stated in such filing.

Entry into a Material Definitive Agreement. On February 24, 2026, Arcosa, Inc. ("Arcosa") entered into a Stock Purchase Agreement (the "Purchase Agreement") with Arcosa Marine Products, Inc., a Delaware corporation (the "Company"), and ACMP Buyer, LLC, a Delaware limited liability company (the "Purchaser") and affiliate of Wynnchurch Capital, L.P. The Company is a leading manufacturer of hopper, tank, and deck barges. Pursuant to the Purchase Agreement, Purchaser has agreed to acquire from Ar…

Results of Operation and Financial Condition. Attached as Exhibit 99.1 is the registrant’s earnings release for the third quarter of 2025, issued October 30, 2025. This release is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise incorporated by reference into any filing pursuant to the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as otherwise express…

Results of Operation and Financial Condition. Attached as Exhibit 99.1 is the registrant’s earnings release for the second quarter of 2025, issued August 7, 2025. This release is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise incorporated by reference into any filing pursuant to the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as otherwise expressl…

Creation of a Direct Financial Obligation or an Obligation Under an Off-Balance Sheet Arrangement of the Registrant. The information provided in

Entry into a Material Definitive Agreement. On June 17, 2025, Arcosa, Inc. (“Arcosa”) entered into Amendment No. 2 (the “Credit Facility Amendment”) to its existing Second Amended and Restated Credit Agreement dated as of August 23, 2023 (as previously amended, the “Existing Credit Agreement” and the Existing Credit Agreement as amended by the Credit Facility Amendment, the “Credit Agreement”), with the lenders party thereto and JPMorgan Chase Bank, N.A, as administrative agent. The Credit Fa…

Results of Operation and Financial Condition. Attached as Exhibit 99.1 is the registrant’s earnings release for the first quarter of 2025, issued May 6, 2025. This release is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise incorporated by reference into any filing pursuant to the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as otherwise expressly st…

Results of Operation and Financial Condition. Attached as Exhibit 99.1 is the registrant’s earnings release for the fourth quarter and full year of 2024, issued February 27, 2025. This release is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise incorporated by reference into any filing pursuant to the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as o…

Results of Operation and Financial Condition. Attached as Exhibit 99.1 is the registrant’s earnings release for the third quarter of 2024, issued October 30, 2024. This release is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise incorporated by reference into any filing pursuant to the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as otherwise express…

As previously disclosed, on August 15, 2024, Arcosa entered into Amendment No. 1 (the “Credit Facility Amendment”) to Arcosa’s existing Second Amended and Restated Credit Agreement dated as of August 23, 2023 (the “Existing Credit Agreement” and the Existing Credit Agreement as amended by the Credit Facility Amendment, the “Credit Agreement”), with the lenders party thereto and JPMorgan Chase Bank, N.A, as administrative agent. The Credit Facility Amendment amended the Existing Credit Agreeme…

Completion of Acquisition or Disposition of Assets. On October 1, 2024, Arcosa, Inc., a Delaware corporation (“Arcosa”), completed the previously announced acquisition by East SM, LLC (formerly known as Arcosa MS9, LLC), a Delaware limited liability company and wholly owned subsidiary of Arcosa (“Purchaser”), of all of the issued and outstanding membership interests and certain identified assets, as applicable (together, the “Target”), of the entities set forth in the Purchase Agreement (as d…

Creation of a Direct Financial Obligation or an Obligation Under an Off-Balance Sheet Arrangement of the Registrant. The information set forth above under

Entry into a Material Definitive Agreement. On August 26, 2024, Arcosa, Inc. (the “Company”) completed its offering (the “Offering”) of $600 million aggregate principal amount of 6.875% senior notes due 2032 (the “Senior Notes”), pursuant to the terms of the purchase agreement, dated August 12, 2024 (the “Purchase Agreement”), among the Company, the guarantors named therein and the initial purchasers named therein (the “Initial Purchasers”). The Senior Notes were issued under an Indenture, da…

Entry into a Material Definitive Agreement. As previously disclosed, on August 1, 2024, Arcosa, Inc. (“Arcosa”) announced its agreement to acquire the construction materials business of Stavola Holding Corporation and its affiliated entities for $1.2 billion in cash (the “Transaction”), subject to customary purchase price adjustments. On August 6, 2024, Arcosa announced the launch of a proposed senior secured Term Loan B Facility due 2031 in an aggregate principal amount of up to $700.0 milli…