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SEC seeks public comments on proposed amendments to prohibited characteristics of major shareholders of capital market business operators



Wednesday 29 April 2026 | No. 89 / 2026


Bangkok, 29 April 2026 – The Securities and Exchange Commission (SEC) is seeking public comments on the proposed principles for amending the prohibited characteristics of major shareholders of securities business operators, derivatives business operators, and digital asset business operators (collectively, the “business operators”). The proposed amendments aim to ensure that major shareholders possess appropriate qualifications and to enhance the credibility of Thailand’s capital market.

At present, transnational financial crimes have become increasingly complex, particularly money laundering offenses. This is compounded by the expansion of business operations across multiple industries (cross sector), both domestically and internationally, which may create opportunities for unsuitable persons to become involved with business operators, either directly or indirectly. These factors underscore the critical importance of robust screening of the qualifications and suitability of major shareholders.

In April 2026, the SEC Board and the Capital Market Supervisory Board approved, in principle, the proposed amendments to the prohibited characteristics of major shareholders to provide greater clarity and to better reflect current risk developments. Key aspects include expanding the scope of consideration of money laundering offenses, as well as offenses relating to the financing of terrorism and the proliferation of weapons of mass destruction, both in Thailand and overseas. In addition, serious offenses under all laws under the SEC’s supervision will be taken into account, so as to more comprehensively address cross sector risks arising from interconnected business activities.

The proposed amendments will establish a unified standard for prohibited characteristics and for the assessment of the severity of conduct of major shareholders across all types of business operators. Transitional provisions will be prescribed to allow business operators and their major shareholders sufficient time to prepare prior to the effective date of enforcement.

The consultation paper is available on the SEC website (www.sec.or.th) at https://www.sec.or.th/TH/Pages/PB_Detail.aspx?SECID=1158 and on the Legal Hub (https://law.go.th/) at https://law.go.th/listeningDetail?survey_id=Njk4NERHQV9MQVdfRlJPTlRFTkQ= 
Stakeholders and interested parties are invited to submit comments through the SEC website or by email to aurawan@sec.or.th, gritchanut@sec.or.th, and witchulada@sec.or.th (for securities and derivatives business operators), or jirapat@sec.or.th and wasu@sec.or.th (for digital asset business operators). The public hearing ends on 28 May 2026.













Building Confidence in the Capital Market
NEWS
Securities and Exchange Commission
Corporate Communication and Investor Service Department
Tel. (66)2033-9502-5 E-mail: press@sec.or.th
No. 89 / 2026 Wednesday 29 April 2026
SEC seeks public comments on proposed amendments to prohibited characteristics of major shareholders of capital market business operators

Bangkok, 29 April 2026 – The Securities and Exchange Commission (SEC) is seeking public comments on the proposed principles for amending the prohibited characteristics of major shareholders of securities business operators, derivatives business operators, and digital asset business operators (collectively, the “business operators”). The proposed amendments aim to ensure that major shareholders possess appropriate qualifications and to enhance the credibility of Thailand’s capital market.

At present, transnational financial crimes have become increasingly complex, particularly money laundering offenses. This is compounded by the expansion of business operations across multiple industries (cross sector), both domestically and internationally, which may create opportunities for unsuitable persons to become involved with business operators, either directly or indirectly. These factors underscore the critical importance of robust screening of the qualifications and suitability of major shareholders.

In April 2026, the SEC Board and the Capital Market Supervisory Board approved, in principle, the proposed amendments to the prohibited characteristics of major shareholders to provide greater clarity and to better reflect current risk developments. Key aspects include expanding the scope of consideration of money laundering offenses, as well as offenses relating to the financing of terrorism and the proliferation of weapons of mass destruction, both in Thailand and overseas. In addition, serious offenses under all laws under the SEC’s supervision will be taken into account, so as to more comprehensively address cross sector risks arising from interconnected business activities.

The proposed amendments will establish a unified standard for prohibited characteristics and for the assessment of the severity of conduct of major shareholders across all types of business operators. Transitional provisions will be prescribed to allow business operators and their major shareholders sufficient time to prepare prior to the effective date of enforcement.

The consultation paper is available on the SEC website (www.sec.or.th) at https://www.sec.or.th/TH/Pages/PB_Detail.aspx?SECID=1158 and on the Legal Hub (https://law.go.th/) at https://law.go.th/listeningDetail?survey_id=Njk4NERHQV9MQVdfRlJPTlRFTkQ= 
Stakeholders and interested parties are invited to submit comments through the SEC website or by email to aurawan@sec.or.th, gritchanut@sec.or.th, and witchulada@sec.or.th (for securities and derivatives business operators), or jirapat@sec.or.th and wasu@sec.or.th (for digital asset business operators). The public hearing ends on 28 May 2026.