C08055-2026

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 11, 2026
2. SEC Identification Number
39274
3. BIR Tax Identification No.
000-506-020-000
4. Exact name of issuer as specified in its charter
ACEN CORPORATION
5. Province, country or other jurisdiction of incorporation
Makati City, Philippines
6. Industry Classification Code(SEC Use Only)
7. Address of principal office
35th Floor Ayala Triangle Gardens Tower 2, Paseo de Roxas corner Makati Avenue, Makati City Postal Code 1226
8. Issuer's telephone number, including area code
(632) 7730 6300
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 39,969,736,051
Series A Preferred Shares 8,341,500
Series B Preferred Shares 16,658,500
11. Indicate the item numbers reported herein
Other Matters

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.

ACEN CORPORATIONACEN

PSE Disclosure Form 4-30 - Material Information/Transactions References: SRC Rule 17 (SEC Form 17-C) and
Sections 4.1 and 4.4 of the Revised Disclosure Rules

Subject of the Disclosure

Voluntary Relinquishment of Wind and Solar Energy Service and Operating Contracts

Background/Description of the Disclosure

On 11 November 2026, the following subsidiaries of ACEN voluntarily relinquished Wind Energy Service Contracts (“WESC”), Solar Energy Operating Contracts (“SEOC”), and Solar Energy Service Contracts (“SESC”) as follows:

• Gigasol4, Inc.’s WESC No. 2022-11-228;
• Gigawind2, Inc.’s WESC No. 2021-08-169;
• Gigawind2, Inc.’s WESC No. 2021-07-166;
• Giga Ace 7, Inc.’s WESC No. 2021-05-159 / WCOA No. 2025-07-059;
• Gigawind5, Inc.’s WESC No. 2021-08-168 / WCOA No. 2025-07-067;
• NorthPoint Wind Power Development Corporation’s WESC No. 2010-02-039;
• Ingrid4 Power Corporation’s SEOC No. 2024-01-814;
• Adlao Energy Corporation’s SEOC No. 2024-07-906;
• AC Laguna Solar, Inc.’s SESC No. 2019-10-536;
• AC Subic Solar, Inc.’s SESC No. 2019-10-534;
• Pangasinan UPC Asia Corporation’s SESC Nos. 2017-08-444 and 2017-08-443; and
• Laguna Central Renewables, Inc.’s SESC No. 2019-11-542.

The voluntary relinquishment of these service contracts has no material impact on ACEN’s operations, as these projects are in early stages of pre-development, with no final investment decision yet. The voluntary relinquishment is also in support of the Department of Energy’s ongoing service contract cleanup initiative.

Other Relevant Information

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Filed on behalf by:
Name Candy Dacanay-Datuon
Designation Assistant Vice President