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STI Education Systems Holdings, Inc.STI

PSE Disclosure Form 17-4 - Request for Extension to File SEC Form 17-Q
References: SRC Rule 17, SEC Memorandum Circular No. 7 Series of 2008 and
Section 17.2 and 17.8 of the Revised Disclosure Rules.

For the period ended	Sep 30, 2026
Deadline of Submission of Quarterly Report	Nov 16, 2026

Reason for requesting extension to submit Quarterly Report
The completion of the Company’s Interim Consolidated Financial Statements (FS) and Quarterly Report required under SEC Form 17-Q has been adversely affected by the recent typhoons and continuous heavy rains in certain areas where the Company’s schools are located. These weather conditions caused flooding and power interruptions in the affected areas, preventing or significantly disrupting the work of key personnel responsible for the preparation and completion of the required reports for several days. As a result, the Company has experienced delays in completing the FS and other reports required under SEC Form 17-Q within the prescribed filing period. In view of the above, the prescribed filing deadline of November 16, 2026 is not sufficient for the Company to complete all reports required to be included in the Quarterly Report under SEC Form 17-Q for the quarter ended September 30, 2026. We therefore request an additional period of five (5) days or up to November 21, 2026 to file the Company’s SEC Form 17-Q for the quarter ended September 30, 2026.

Reason for requesting extension to submit Quarterly Report

The completion of the Company’s Interim Consolidated Financial Statements (FS) and Quarterly Report required under SEC Form 17-Q has been adversely affected by the recent typhoons and continuous heavy rains in certain areas where the Company’s schools are located. These weather conditions caused flooding and power interruptions in the affected areas, preventing or significantly disrupting the work of key personnel responsible for the preparation and completion of the required reports for several days. As a result, the Company has experienced delays in completing the FS and other reports required under SEC Form 17-Q within the prescribed filing period.

In view of the above, the prescribed filing deadline of November 16, 2026 is not sufficient for the Company to complete all reports required to be included in the Quarterly Report under SEC Form 17-Q for the quarter ended September 30, 2026.

We therefore request an additional period of five (5) days or up to November 21, 2026 to file the Company’s SEC Form 17-Q for the quarter ended September 30, 2026.

Other Relevant Information
Please see attached duly accomplished SEC Form 17-L of STI Education Systems Holdings, Inc. dated 9 November 2026.

The Company undertakes to submit the report within five (5) calendar days after the prescribed deadline or upon submission of the report to the Securities and Exchange Commission, whichever is earlier. The Company understands that failure to comply with the undertaking may result to the imposition of applicable penalty/ies and/or sanction/s.

Filed on behalf by:

Name	Arsenio Cabrera, Jr.
Designation	Corporate Secretary

STI Education Systems Holdings, Inc.STI

PSE Disclosure Form 17-4 - Request for Extension to File SEC Form 17-Q References: SRC Rule 17, SEC Memorandum Circular No. 7 Series of 2008 and Section 17.2 and 17.8 of the Revised Disclosure Rules.

PSE Disclosure Form 17-4 - Request for Extension to File SEC Form 17-Q
References: SRC Rule 17, SEC Memorandum Circular No. 7 Series of 2008 and
Section 17.2 and 17.8 of the Revised Disclosure Rules.