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)

Dec 1, 2025

2. SEC Identification Number

A199611651

3. BIR Tax Identification No.

005-393-442

4. Exact name of issuer as specified in its charter

MAYNILAD WATER SERVICES, INC.

5. Province, country or other jurisdiction of incorporation

PHILIPPINES

6. Industry Classification Code(SEC Use Only)

7. Address of principal office

Maynilad Building, MWSS Complex, Katipunan Avenue, Pansol, 1119 Quezon City Postal Code 1119

8. Issuer's telephone number, including area code

(+632) 8920-5423

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

N/A

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
Series A Blue Bonds Due 2029	9,000,000,000
Series B Blue Bonds Due 2034	6,000,000,000
Common Shares	7,546,897,300

11. Indicate the item numbers reported herein

Item No. 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.

Maynilad Water Services, Inc.MYNLD

PSE Disclosure Form 4-30 - Material Information/Transactions References: SRC Rule 17 (SEC Form 17-C) and
Sections 4.1 and 4.4 of the Revised Disclosure Rules

Subject of the Disclosure
Weekly Stabilization Report re: stabilization activity relating to the Initial Public Offering (IPO) of Maynilad Water Services, Inc.
Background/Description of the Disclosure
In compliance with SEC's approval letter dated 28 May 2025, and in connection with the stabilization activities for the equity offering of Maynilad Water Services, Inc., please see attached Weekly Stabilization Report prepared by UBS AG Singapore Branch and its relevant affiliate, as Stabilization Agent, for the week ending 28 November 2025.
Other Relevant Information
None.