ONW: Change in shareholding of principal shareholder (Nguyen Thi Ngoc Mai)

- Name of issuer: One World Services Joint Stock Company
- Stock code: ONW
- Securities type: common stock
- Name of principal shareholder: Nguyen Thi Ngoc Mai
- Number of shares held by the principal shareholder before transaction: 235,200 shares (11.76%)
- Number of shares acquired: 201,000 shares
- Total holding following transaction and total percentage following transaction: 436,200 shares (21.81%)
- Purpose of transaction: increase the shareholding
- Date of transaction: 10/07/2025