On 5 March 2026, Thai SEC issued press release regarding the amendments above.
- Thai SEC also published English version of the press release on the same day.
- Thai SEC reminded about the transitional period above, which ends 180 days from 4 March 2026 (i.e., Aug. 31, 2026).
Background
- Existing approved major shareholding under the previous criteria is deemed to have received approval from the Thai SEC under the revised criteria.
- Persons who meet the criteria for major shareholding under the new criteria shall seek Thai SEC's approval within 180 days.
- Thai SEC issued guidance to explain revised criteria including organization structure.
- Thai SEC issued circular on determination of factors for considering the severity of prohibited behavior for persons who are or will be major shareholders of securities companies, to incorporate the amendments to definition of major shareholders.

