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)

Sep 28, 2026

2. SEC Identification Number

A199611651

3. BIR Tax Identification No.

005-393-442-000

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, Quezon City Postal Code 1108

8. Issuer's telephone number, including area code

02-8981-3483

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	7,402,603,600

11. Indicate the item numbers reported herein

Item No. 9 - Other Events

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 13-1 - Change in Shareholdings of
Directors and Principal Officers References: SRC Rule 23 (SEC Form 23-B) and
Section 13 of the Revised Disclosure Rules

Subject of the Disclosure
Change in Shareholdings of a Director / Principal Officer
Background/Description of the Disclosure
Please be informed of the acquisition of Common Shares of Maynilad Water Services, Inc. by one of its directors, who is also an executive officer.

Name of Person	Ramoncito S. Fernandez
Position/Designation	Director / President and CEO

For Equity Securities

Type of Security / Stock Symbol	Date of Transaction	Securities Acquired (A) or Disposed (D)			Ownership Form Direct (D) or Indirect (I)	Nature of Indirect Beneficial Ownership
		Number of Shares	(A) or (D)	Price per Share
Common Shares / MYNLD	Sep 28, 2026	1,300	A	16.90	I	Through PCD
Common Shares / MYNLD	Sep 28, 2026	7,000	A	16.86	I	Through PCD
Common Shares / MYNLD	Sep 28, 2026	8,900	A	16.96	I	Through PCD
Common Shares / MYNLD	Sep 28, 2026	15,900	A	16.72	I	Through PCD
Common Shares / MYNLD	Sep 28, 2026	27,100	A	16.78	I	Through PCD
Common Shares / MYNLD	Sep 28, 2026	57,800	A	16.94	I	Through PCD

Number of Shares Owned after the Transaction

Direct	0
Indirect	1,458,000