SET Overhauls Listed Company Rules via 3-Track Plan

Post Today•Economy•3d ago

Reader Briefing

The Stock Exchange of Thailand is implementing a three-track plan to enhance investor information, strengthen internal governance, and increase listed company accountability.

•The Stock Exchange of Thailand (SET) introduced a '4C' risk classification for Caution (C) signs to provide clearer warnings to investors.
•New disclosure measures took effect on July 1, 2026, requiring monthly shareholder updates and immediate reporting of four major risks.
•Internal audit head qualifications will be strictly regulated, with enforcement starting July 1, 2028 for IPOs and July 1, 2029 for current listed companies.

Overview

•The Stock Exchange of Thailand categorized Caution (C) signs into four risk groups: CB (financial status), CS (financial statements), CC (non-compliance), and CF (free float).
•There are currently 73 listed companies under the Caution (C) sign, with the CB group being the largest.
•Measures to close investor pain points, including monthly updates of major shareholders and immediate risk reporting, became effective on July 1, 2026.
•The Stock Exchange of Thailand now announces inquiries sent to companies to the public immediately instead of waiting for a response.
•Public hearing for the third track regarding internal control mechanisms ended on August 7, 2026.
•Internal Audit (IA) heads must hold a certification recognized by the SEC and have professional experience.
•The overall regulatory measures have been approved by the Stock Exchange of Thailand Board and are awaiting official approval from the SEC, expected in September or October 2026.
•The Stock Exchange of Thailand notifies all securities companies simultaneously when risky behavior is detected to block such actions based on ASCO standards.

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Key Entities

Organization

Stock Exchange of Thailand(ตลาดหลักทรัพย์ฯ)ℹ️

The organization implementing the 3-track plan to overhaul listed companies and regulate the capital market.

SEC(ก.ล.ต.)

The regulator responsible for approving the Stock Exchange of Thailand's measures and certifying internal control qualifications.

Association of Thai Securities Companies(สมาคมบริษัทหลักทรัพย์ไทย)

The organization providing the joint practice standards for securities companies to block risky market behavior.

ASCO

The acronym for the Association of Thai Securities Companies.

Person

Duangrat Samutwanich(ดวงรัตน์ สมุทวณิช)

Assistant Manager and Head of Listed Companies and Other Instruments Supervision Group at the Stock Exchange of Thailand.

Paweena Sriphothong(ปวีณา ศรีโพธิ์ทอง)

Deputy Manager and Head of Market Supervision at the Stock Exchange of Thailand.