C07731-2026

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)
Oct 30, 2026
2. SEC Identification Number
0000091447
3. BIR Tax Identification No.
0001903240000
4. Exact name of issuer as specified in its charter
Semirara Mining and Power Corporation
5. Province, country or other jurisdiction of incorporation
Philippines
6. Industry Classification Code(SEC Use Only)
7. Address of principal office
2/F DMCI Plaza, 2281 Don Chino Roces Avenue, Makati City Postal Code -
8. Issuer's telephone number, including area code
8246-2280/82462238
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 4,250,547,620
11. Indicate the item numbers reported herein
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.

Semirara Mining and Power CorporationSCC

PSE Disclosure Form 4-31 - Press Release References: SRC Rule 17 (SEC Form 17-C)
Section 4.4 of the Revised Disclosure Rules

Subject of the Disclosure

Power segment drives SMPC Q3 net income up 66% to P2.4B; nine-month earnings reach P11.0B
Background/Description of the Disclosure

Integrated energy company Semirara Mining and Power Corporation (SMPC) recorded third-quarter net income of P2.4 billion, up 66% from P1.5 billion a year earlier, as stronger power earnings and lower noncash charges more than offset weaker coal operating performance.

For the first nine months of 2026, consolidated net income grew by 11%, from P9.9 billion to P11.0 billion, with power accounting for 78% of total earnings.

Q3 Power Operating Results

The power segment contributed P2.6 billion to consolidated third-quarter earnings, compared with P1.3 billion last year, more than offsetting losses from the coal segment.

Total power sales increased by 5%, from 1,327 gigawatt-hours (GWh) to 1,388 GWh, supported by improved plant performance.
Bilateral contracts accounted for 54% of total electricity sold, while the remaining 46% was sold through the spot market.

Overall average selling price rose by 26%, from P4.17/KWh to P5.27/KWh, reflecting higher spot market prices.

During the period, average Luzon-Visayas spot prices surged by 85%, from Php3.51/kWh to Php6.50/kWh, as electricity demand growth outpaced available supply, amid elevated fuel costs and line congestions in the Visayas grid.

As of September 30, 2026, contracted capacity represented 45% of SMPC’s 860 MW dependable capacity. After accounting for station service requirements, 400 MW remained available for spot market sales.

Coal Operating Results

The coal segment contributed P110 million in net losses, reflecting lower shipments and elevated production costs, including fuel.

Coal production fell by 5% to 3.6 million metric tons (MMT), from 3.8 MMT, amid limited production at the Acacia mine and near-depletion of the Narra mine.

Shipments declined by 25%, from 3.6 MMT to 2.7 MMT, with domestic power, cement and industrial plants accounting for 85% of total sales.

During the quarter, the Indonesian Coal Index 4 (ICI4) rose by 62%, from US$42.1/MT to US$68.1/MT, supported by Indonesian supply constraints and elevated LNG prices linked to geopolitical tensions in the Middle East.

Average selling price for Semirara coal increased by 22%, slower than ICI4, from P2,249 per metric ton to P2,749 per metric ton, with a larger share of non-commercial-grade coal sold.

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About SMPC:

Semirara Mining and Power Corporation (SMPC) is the largest and most modern coal producer in the Philippines. It is a vertically integrated power generation company that runs on its own fuel (coal). Its two wholly-owned operating subsidiaries—Sem-Calaca Power Corporation (SCPC) and Southwest Luzon Power Generation Corporation (SLPGC)—provide baseload power to the national grid through bilateral contract quantity (BCQ) and the Wholesale Electricity Spot Market (WESM).
Other Relevant Information

Attached is SEC Form 17-C.
Filed on behalf by:
Name John Sadullo
Designation Vice President, Asset Registry, Corporate Secretary & Corporate Information Officer