Vietnam Fines CMS Leaders for Hidden-Account Trading; 14-Year Breach

Overview

Vietnam’s State Securities Commission (UBCKNN) fined two leaders of Tập đoàn CMH Việt Nam (HNX: CMS) VND225 million each for using securities accounts registered in other people’s names to trade CMS shares, concealing true ownership and evading disclosure obligations. The decision, dated 20/10, names Board member and director Trần Văn Trung and Chief Accountant Đinh Thị Thủy, whose violation ran from December 2010 to August 2024, nearly 14 years. The penalties land as CMS reports H1 2026 revenue up 19% but net profit down 51%.

Key Facts

• UBCKNN fined Trần Văn Trung and Đinh Thị Thủy VND225 million each, per a decision dated 20/10.
• Trung traded CMS shares via account 005C101444, held in the name of Trần Ngọc Linh at MB Securities (MBS), from 13/01/2022 to 22/09/2023.
• Thủy traded via account 058C006567, held in the name of Nguyễn Thúy Dung at FPT Securities (FTS), from 03/12/2010 to 15/08/2024.
• Thủy’s violation began days after CMS listed on HNX on 29/11/2010 and lasted nearly 14 years.
• As of 30/06/2026, Thủy directly held nearly 115,000 CMS shares, or 0.451% of charter capital; Trung held none.
• Thủy is Chief of the Supervisory Board and Trung a Board member and director at subsidiary Xây lắp Môi trường (UPCoM: VCE), 68.44% owned by CMS.
• CMS posted H1 2026 consolidated net revenue of nearly VND163 billion, up 19% year-on-year, but net profit of under VND2 billion, down 51%.

What Happened

According to the UBCKNN penalty decision, Trần Văn Trung used a securities account opened at MB Securities in the name of Trần Ngọc Linh to buy and sell CMS shares between 13/01/2022 and 22/09/2023. Đinh Thị Thủy, CMS’s chief accountant, used an account at FPT Securities in the name of Nguyễn Thúy Dung for CMS trades from 03/12/2010 to 15/08/2024. The regulator said both acted to conceal information about their true ownership of CMS shares and to avoid information-disclosure obligations.

The Thủy case is the more striking by duration: the trading began only days after CMS listed on HNX on 29/11/2010 and continued for nearly 14 years. The filing does not disclose the volume or value of shares traded through the nominee accounts, nor whether the individuals named as account holders face any action. Both executives also hold roles at CMS subsidiary Xây lắp Môi trường (UPCoM: VCE), where Thủy heads the Supervisory Board and Trung serves as a Board member and director.

Market Context

CMS closed at VND5,200 on 24/10, down 30% since the start of 2026, with average liquidity of just over 48,000 shares per day. The stock has a history of sharp swings, including a run from roughly VND3,600 to VND35,000 on an adjusted basis before falling back to its prior base. The penalty adds a governance overhang to a small-cap construction name on HNX whose H1 2026 profit compression contrasts with double-digit revenue growth, a margin pattern common across Vietnamese contractors facing input-cost and receivables pressure.

Strategic Significance

The core issue is disclosure integrity rather than the size of the fine, which is modest relative to the trading periods involved. A near-14-year undisclosed beneficial-ownership arrangement at a listed issuer undermines the reliability of CMS’s shareholder register and related-party disclosures, and it sits alongside the company’s 68.44% control of UPCoM-listed VCE, where the same individuals hold oversight roles. For long-term holders, the case argues for discounting management’s disclosed ownership and transaction history and for weighting minority-governance risk more heavily in a stock with thin liquidity and a halved profit base.

What to Watch

• Whether CMS or VCE issue statements on the penalties or on any board and supervisory-board changes.
• Any additional UBCKNN actions tied to the nominee accounts or to disclosure of the underlying trades.
• CMS’s Q3 2026 results, to see whether the 51% net-profit decline extends into the second half.
• VCE filings on related-party transactions and governance, given the dual roles of both executives.
• Liquidity and foreign-ownership data for CMS, where average daily volume is only about 48,000 shares.