SECURITIES AND EXCHANGE COMMISSIONSEC FORM 17-C

CURRENT REPORT UNDER SECTION 17
OF THE SECURITIES REGULATION CODE
AND SRC RULE 17.2(c) THEREUNDER

1. Date of Report (Date of earliest event reported)

Aug 26, 2026

2. SEC Identification Number

36140

3. BIR Tax Identification No.

000-201-881

4. Exact name of issuer as specified in its charter

Concrete Aggregates Corp.

5. Province, country or other jurisdiction of incorporation

Philippines

6. Industry Classification Code(SEC Use Only)

7. Address of principal office

7th Floor, West Wing, Estancia Offices, Capitol Commons, Meralco Avenue, Pasig City Postal Code 1604

8. Issuer's telephone number, including area code

(02) 8631-1231

9. Former name or former address, if changed since last report

Not applicable

10. Securities registered pursuant to Sections 8 and 12 of the SRC or Sections 4 and 8 of the RSA

Title of Each Class	Number of Shares of Common Stock Outstanding and Amount of Debt Outstanding
Common Class	27,466,449

11. Indicate the item numbers reported herein

Item 9

The Exchange does not warrant and holds no responsibility for the veracity of the facts and representations contained in all corporate disclosures, including financial reports. All data contained herein are prepared and submitted by the disclosing party to the Exchange, and are disseminated solely for purposes of information. Any questions on the data contained herein should be addressed directly to the Corporate Information Officer of the disclosing party.

Concrete Aggregates CorporationCA

PSE Disclosure Form 4-3 - Amendments to Articles of Incorporation References: SRC Rule 17 (SEC Form 17-C) and
Section 4.4 of the Revised Disclosure Rules

Subject of the Disclosure
Amendment of the Articles of Incorporation – Declassification of Shares
Background/Description of the Disclosure
Declassification of Class “A” and Class “B” Shares into a Single Class of Common Shares

Date of Approval by Board of Directors	Mar 12, 2026
Date of Approval by Stockholders	Apr 30, 2026
Other Relevant Regulatory Agency, if applicable	N/A
Date of Approval by Relevant Regulatory Agency, if applicable	N/A
Date of Approval by Securities and Exchange Commission	Aug 24, 2026
Date of Receipt of SEC approval	Aug 25, 2026

Amendment(s)

Article No.	From	To
Seventh	SEVENTH: That the capital stock of the said corporation is FIVE HUNDRED MILLION PESOS (P500,000,000.00), Philippine Currency, and said capital stock is divided into FORTY MILLION (40,000,000) Class “A” shares and TEN MILLION (10,000,000) Class “B” shares with a par value of TEN PESOS (10.00), Philippine Currency), each share. (As amended April 26, 1995 by the Board of Directors and by the Stockholders) Both classes of shares shall be identical in all respects except that: (a) Class “A” shares shall be issued and transferred only to citizens of the Philippines and to associations and partnerships whose articles of association require that one hundred percent (100%) of their capital be owned by such citizens and to corporations organized…	SEVENTH: That the capital stock of the said corporation is FIVE HUNDRED MILLION PESOS (P500,000,000.00), Philippine Currency, and said capital stock is divided into FIFTY MILLION (50,000,000) shares with a par value of TEN PESOS (10.00), Philippine Currency, each share. (As amended on March 12, 2026 by the Board of Directors and ratified on April 30, 2026 by the Stockholders.)

Rationale for the amendment(s)
In compliance with SEC Memorandum Circular No. 10, Series of 2025, requiring publicly listed companies with Class “A” and Class “B” common shares to declassify such shares into a single class of common shares.

The timetable for the effectivity of the amendment(s)

Expected date of filing the amendments to the Articles of Incorporation with the SEC	Jul 1, 2026
Expected date of SEC approval of the Amended Articles of Incorporation	Aug 24, 2026

Effect(s) of the amendment(s) to the business, operations and/or capital structure of the Issuer, if any
The amendment declassifies the Corporation's Class “A” and Class “B” shares into a single class of common shares. The amendment does not change the Corporation's authorized capital stock, par value per share, or total number of issued and outstanding shares.
Other Relevant Information
The Corporation was notified by the Securities and Exchange Commission (“SEC”) on the afternoon of 25 August 2026 that the amendment to its Articles of Incorporation had been approved. The corresponding Certificate of Amendment was picked up by the Corporation on 26 August 2026. This disclosure is being amended to reflect the SEC’s approval of the amendment to the Corporation’s Articles of Incorporation. The Corporation is likewise in the process of coordinating with the SEC Markets and Securities Regulation Department regarding the ISIN applicable to the resulting single class of common shares and will undertake the necessary actions upon confirmation of the applicable requirements. Attached is a copy of the SEC Form 17-C filed with the SEC containing the Certificate of Amendment and the Amended Articles of Incorporation.