1. Name of individual performing the transaction:

– Mr. Dang Quang Dat – Internal shareholder  – Position: Member of the Board of Directors

– And related person of Mr. Dang Quang Dat:

+ Mrs. Nguyen Thi Huong  – Relationship: Wife

+ Mrs. Dang Thi Minh Hue  – Relationship: Son

2. Trading stock code: S55

3. Number of shares held before trading: 2,026,458 shares, equivalent to 20.26%, details:

– Grandfather. Dang Quang Dat 1,534,306.0 shares (equivalent to 15.34%)
– Grandma. Nguyen Thi Huong 411,992.0 shares (equivalent to 4.12%)
– Grandma. Dang Thi Minh Hue 80,160.0 shares (equivalent to 0.80%)
4. Number of shares registered for sale: 2,026,458 shares, equivalent to  20.26%

5. Number of shares expected to hold after trading: 00 shares (corresponding to 00%)

6. Trading method: Order matching or agreement

7. Estimated time of transaction:

– Date start: April 19th, 2023

– Date end: May 31th, 2023