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)

Nov 4, 2026

2. SEC Identification Number

A199602982

3. BIR Tax Identification No.

00487017100000

4. Exact name of issuer as specified in its charter

OceanaGold (Philippines), Inc.

5. Province, country or other jurisdiction of incorporation

Philippines

6. Industry Classification Code(SEC Use Only)

7. Address of principal office

Didipio Mine, Barangay Didipio, Kasibu, Nueva Vizcaya Postal Code 3703

8. Issuer's telephone number, including area code

09178612279

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
Common Shares	2,280,000,000

11. Indicate the item numbers reported herein

Items 4 and 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.

OceanaGold (Philippines), Inc.OGP

PSE Disclosure Form 4-8 - Change in Directors and/or Officers
(Resignation/Removal or Appointment/Election)
References: SRC Rule 17 (SEC Form 17-C) and
Section 4.4 of the Revised Disclosure Rules

Subject of the Disclosure
Resignation and election of Corporate Secretary and Assistant Corporate Secretary
Background/Description of the Disclosure
At the regular meeting of the Board of Directors of OceanaGold (Philippines), Inc. (the “OGP Board”) held on 4 November 2026, the OGP Board accepted the resignations of Atty. Karina P. Dulinayan (“Atty. Dulinayan”) as Corporate Secretary and Atty. Dianne Hazel D. Cañita (“Atty. Cañita”) as Assistant Corporate Secretary, effective upon the adjournment of the meeting. At the same meeting, the OGP Board, approved the election of Atty. Cañita as Corporate Secretary and Atty. Joannah Marie V. Salamat (“Atty. Salamat”) as Assistant Corporate Secretary, likewise effective upon the adjournment of the meeting. Atty. Cañita and Atty. Salamat will serve the unexpired terms of Atty. Dulinayan and Atty. Cañita, respectively, and until their successors shall have been elected and qualified.

Resignation/Removal or Replacement

Name of Person	Position/Designation	Effective Date of Resignation/Cessation of term (mmm/dd/yyyy)	Reason(s) for Resignation/Cessation
Karina P. Dulinayan	Corporate Secretary	11/04/2026	Resigned to focus on special projects for the Company
Dianne Hazel D. Cañita	Assistant Corporate Secretary	11/04/2026	Resigned in connection with her election as Corporate Secretary

Election or Appointment

Name of Person	Position/Designation	Date of Appointment/Election (mmm/dd/yyyy)	Effective Date of Appointment Election (mmm/dd/yyyy)	Shareholdings in the Listed Company		Nature of Indirect Ownership
				Direct	Indirect
Dianne Hazel D. Cañita	Corporate Secretary	11/04/2026	11/04/2026	-	-	-
Joannah Marie V. Salamat	Assistant Corporate Secretary	11/04/2026	11/04/2026	-	-	-

Promotion or Change in Designation

Name of Person	Position/Designation		Date of Approval (mmm/dd/yyyy)	Effective Date of Change (mmm/dd/yyyy)	Shareholdings in the Listed Company		Nature of Indirect Ownership
	From	To			Direct	Indirect
-	-	-	-	-	-	-	-

Other Relevant Information
See attached SEC Form 17-C for further information.