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.

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, 2025
Deadline of Submission of Quarterly Report	Nov 14, 2025

Reason for requesting extension to submit Quarterly Report
The completion of the Company’s Interim Consolidated Financial Statements (“FS”) and the Quarterly Report required pursuant to SEC Form 17-Q have been materially affected by the recent typhoons and continuous heavy rains in certain areas where some of the Company’s schools are situated. Such adverse weather conditions resulted in flooding and power interruptions in the affected locations and hindered the ability of key personnel who are essential to the preparation and completion of the said reports to report for work for several days. Consequently, these circumstances have caused delays in the completion of the FS and other reports required to be filed under SEC Form 17-Q. In view of the above, the prescribed deadline of November 14, 2025, is not sufficient for the Company to complete all the reports required in the quarterly report (SEC Form 17-Q) for the quarter ended September 30, 2025. We therefore request an additional period of five (5) days or up to November 19, 2025 to file the Company’s SEC Form 17-Q for the quarter ended September 30, 2025.

Reason for requesting extension to submit Quarterly Report

The completion of the Company’s Interim Consolidated Financial Statements (“FS”) and the Quarterly Report required pursuant to SEC Form 17-Q have been materially affected by the recent typhoons and continuous heavy rains in certain areas where some of the Company’s schools are situated. Such adverse weather conditions resulted in flooding and power interruptions in the affected locations and hindered the ability of key personnel who are essential to the preparation and completion of the said reports to report for work for several days. Consequently, these circumstances have caused delays in the completion of the FS and other reports required to be filed under SEC Form 17-Q.

In view of the above, the prescribed deadline of November 14, 2025, is not sufficient for the Company to complete all the reports required in the quarterly report (SEC Form 17-Q) for the quarter ended September 30, 2025.

We therefore request an additional period of five (5) days or up to November 19, 2025 to file the Company’s SEC Form 17-Q for the quarter ended September 30, 2025.

Other Relevant Information
Please see attached duly accomplished SEC Form 17-L of STI Education Systems Holdings, Inc. dated 10 November 2025.

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.