CR00726-2026

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 17-12-A - List of Top 100 Stockholders (Common Shares) Reference: Section 17.12 of the Revised Disclosure Rules

Type of Securities

For the period ended Dec 31, 2025
Description of the Disclosure

In compliance with Article VII, Section 17.12 of the Revised Disclosure Rules of the PSE, we submit herewith the list
of the Top 100 Stockholders of Maynilad Water Services, Inc. as of 31 December 2025.

The "Number of Listed Common Shares" is inclusive of the 215,393,700 treasury shares.

Number of Issued Common Shares 7,617,997,300
Number of Treasury Common Shares, if any 215,393,700
Number of Outstanding Common Shares 7,402,603,600
Number of Listed Common Shares 7,617,997,300
Number of Lodged Common Shares 2,458,038,861
  PCD Nominee - Filipino 1,541,082,094
  PCD Nominee - Non-Filipino 916,956,767
Number of Certificated Common Shares 4,944,564,739
Change from previous submission

This is the initial submission of Maynilad Water Services, Inc,

Filed on behalf by:
Name Kristina Joyce Gangan
Designation Assistant Corporate Secretary