CR07836-2026

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.

OceanaGold (Philippines), Inc.OGP

PSE Disclosure Form 17-7 - Statement of Changes in Beneficial
Ownership of Securities References: SRC Rule 23 and
Section 17.5 of the Revised Disclosure Rules

Name of Reporting Person Dianne Hazel D. Canita
Relationship of Reporting Person to Issuer Officer
Description of the Disclosure

Please see attached SEC Form 23-B (Statement of Changes in Beneficial Ownership of Securities) for Dianne Hazel D. Canita following her resignation as Assistant Corporate Secretary on 4 November 2026 and as disclosed to the Philippine Stock Exchange on https://edge.pse.com.ph/openDiscViewer.do?edge_no=0b1da8e1c0848d1664d70b69f0a3140b. Ms. Canita does not beneficially own any shares of the Company during her tenure as Assistant Corporate Secretary. The filing reflects the cessation of her reporting obligation as an Assistant Corporate Secretary.

Filed on behalf by:
Name Dyann Rabaya
Designation Principal - Compliance and Business Integrity