C05386-2026

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)
Jul 15, 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 1231
8. Issuer's telephone number, including area code
8246-2280/8246-2238
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 14-1 - Notice of Analysts'/Investors' Briefing References: Section 14 of the Revised Disclosure Rules

Subject of the Disclosure

Notice of Analysts' Briefing

Background/Description of the Disclosure

Semirara Mining and Power Corporation will be holding an Analysts' Briefinig wiuth details as follows:

Type of Briefing Analysts' Briefing
Subject of the Briefing Q2/H1 2026 Financial and Operating Results
Date of the Briefing Aug 6, 2026
Time 4:00 PM
Venue https://zoom.us/webinar/register/WN_0KEEyAuySzOgaOdFMefcNw
Contact Person Hannah Cecille L. Chan
Contact Details [email protected]
Other Relevant Information

See attached SEC Form 17-C.

Filed on behalf by:
Name John Sadullo
Designation Vice President, Asset Registry, Corporate Secretary & Corporate Information Officer