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)

Aug 24, 2026

2. SEC Identification Number

36073

3. BIR Tax Identification No.

000-508-271-000

4. Exact name of issuer as specified in its charter

UNION BANK OF THE PHILIPPINES

5. Province, country or other jurisdiction of incorporation

METRO MANILA

6. Industry Classification Code(SEC Use Only)

7. Address of principal office

UNIONBANK PLAZA, MERALCO AVENUE CORNER ONYX STREET, ORTIGAS CENTER, PASIG CITY Postal Code 1605

8. Issuer's telephone number, including area code

(02) 8841-8600

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	3,316,405,584

11. Indicate the item numbers reported herein

ITEM 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.

Union Bank of the PhilippinesUBP

PSE Disclosure Form 4-4 - Amendments to By-Laws References: SRC Rule 17 (SEC Form 17-C) and
Section 4.4 of the Revised Disclosure Rules

Subject of the Disclosure
Amendments to the Bank's By-Laws
Background/Description of the Disclosure
Please be informed that Union Bank of the Philippines (the “Bank”) received today the attached Certificate of Filing of Amended By-Laws (“Certificate”) dated August 24, 2026, issued by the Securities and Exchange Commission (“SEC”), approving the amendments to the Bank’s By-Laws. The issuance of the original copy of the Certificate is subject to the Bank’s submission of the physical copies of the amendment documents to the SEC within fifteen (15) days from the date of thereof. At the Annual Stockholders’ Meeting (“ASM”) of Union Bank of the Philippines held today, April 24, 2026, the stockholders ratified the amendments to Articles V, VII, VIII and X of the Bank’s By-Laws as approved by the Board of Directors on March 27, 2026 by virtue of its delegated power to amend the By-Laws. Please refer to attached “Annex A” for the comparative table of amendments.

Date of Approval by Board of Directors	Mar 27, 2026
Date of Approval by Stockholders	Apr 24, 2026
Other Relevant Regulatory Agency, if applicable	Bangko Sentral ng Pilipinas (BSP)
Date of Approval by Relevant Regulatory Agency, if applicable	Aug 10, 2026
Date of Approval by Securities and Exchange Commission	Aug 24, 2026
Date of Receipt of SEC approval	Aug 24, 2026

Amendment(s)

Article and Section Nos.	From	To
Article V, Section 15	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article V, Section 17	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article V, Section 22	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article V, Section 23	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article V, Section 24	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article V, Section 25	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article VII, Section 1	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article VIII, Section 5	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article VIII, Section 7	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article VIII, Section 8	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article VIII, Section 9	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article VIII, Section 10	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article VIII, Section 11	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article VIII, Section 12	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article VIII, Section 14	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article VIII, Section 15	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article X, Section 1	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".
Article X, Section 2	Please refer to the attached Annex "A".	Please refer to the attached Annex "A".

Rationale for the amendment(s)

The amendments were aimed to: a. Refine the Officers of the Bank and clarify which roles-as updated-carry enterprise-level judgment and material fiduciary responsibility, reducing ambiguity around governance, disclosures, and regulatory accountability (Articles VII and VIII); and b. Align the By-Laws with current procedures and practices, to strengthen corporate governance, and to correct clerical/ typographical errors (Articles V and X).

The timetable for the effectivity of the amendment(s)

Expected date of filing the amendments to the By-Laws with the SEC	Aug 20, 2026
Expected date of SEC approval of the Amended By-Laws	Aug 24, 2026

Effect(s) of the amendment(s) to the business, operations and/or capital structure of the Issuer, if any
N/A
Other Relevant Information
The disclosure is amended to reflect the receipt of the approval of the Securities and Exchange Commission (SEC) and to update the timetable for the effectivity of the amendment(s). The SEC's approval of the amendments to the Bank’s By-Laws is subject to the SEC’s post-audit process.