DMS: Change in shareholding of principal shareholder (Do Thi Huyen)

- Name of issuer: DMC - Southern Petroleum Chemicals Joint Stock Company
- Stock code: DMS
- Securities type: common stock
- Name of principal shareholder: Do Thi Huyen
- Number of shares held by the principal shareholder before transaction: 958,920 shares (23.97%)
- Number of shares acquired: 2,000 shares
- Total holding following transaction and total percentage following transaction: 960,920 shares (24.02%)
- Purpose of transaction: purchase transaction
- Date of transaction: 09/05/2025.