KEY TAKEAWAYS
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On 1 July 2026, Thailand’s most significant overhaul of listed-company transaction rules in two decades took effect. The new notifications of the Capital Market Supervisory Board (TorChor. 45/2568 and 46/2568), together with the SET’s new regulations, replace the framework that had governed asset acquisitions, related party transactions, and backdoor listings since 2003–2004.
At House of Wisdom’s Club, our team walked business leaders, investors, and advisors through what has changed, why it matters, and how landmark Thai transactions would be assessed under the new regime — in a conversation designed to make a technical subject genuinely accessible.
Yaowarote Klinboon — Executive Partner
Karinevidch Olivero — Partner
Teerasak Petchpaibool — Counsel
Five Things Every Board Should Know
Transaction size now determines the obligations — from board approval and SET disclosure, through shareholder approval with an independent financial advisor (IFA) opinion, up to the full backdoor listing regime. Stricter thresholds apply to companies with negative net assets or operating losses, and related transactions within 12 months — including those under the new “same project” concept — must be aggregated.
A genuinely new mechanism: shareholders holding just 10% can veto a transaction where the IFA or the audit committee has objected. Transactions requiring shareholder approval need a three-quarters majority, excluding interested shareholders.
The SEC has moved away from reviewing IFA reports and shareholder meeting materials in advance, toward a disclosure-based, post-audit regime. Execution is faster — but the responsibility on companies and their advisors to get it right the first time is greater than ever.
Split transactions, staged acquisitions, shell company structures, and de facto control transfers will be assessed on their true purpose and effect — not their legal form. The SET’s guidelines set out the factors and red-flag behaviors it will examine, from transaction timing to shareholder agreement structures.
A transaction exceeding 100% may still avoid the relisting requirement where the acquired business is similar or complementary, the core business and control remain unchanged, and the company continues to meet listing qualifications — as illustrated by recent market precedents.
Size Thresholds Under the New Regime
Transaction Size | Board Approval + SET Disclosure | Shareholders’ Approval | IFA Opinion |
Below 25% | — | — | — |
25% – below 50% | Required | Required | — |
50% and above | Required | Required | Required |
100% and above | Required | Required + Relisting (Backdoor Listing) | Required |
Lower thresholds (10% / 25%) apply to companies with negative net assets or operating losses. Summary for general information only — see the full notifications for complete requirements.
“A backdoor listing is not a shortcut — and never has been. Under the new rules, it is a well-defined pathway with standards comparable to an IPO. Structuring the transaction correctly from day one matters more than ever.”
Planning a Transaction Under the New Framework?
Whether you are contemplating a significant acquisition, a business combination, or a group restructuring, our capital markets team can help you structure it correctly from the outset — and identify every available pathway.
Talk to our team: Yaowarote Klinboon at yaowarote.k@wiseequitylegal.com, Karinevidch Olivero at karinevidch.o@wiseequitylegal.com, and Teerasak Petchpaibool at teerasak.p@wiseequitylegal.com.
