On March 15, 2023, the Hochiminh Stock Exchange issued Announcement No.533/TB-SGDHCM about the record date of Water Supply Sewerage Construction and Investment Joint Stock Company as follows: - Ex-right date: March 31, 2023 - Record date: April 03, 2023 1) Reason purpose: to hold the Annual General Meeting of Shareholders 2023. 2) Content: - Exercise ratio: 01 share – 01 voting right - Time: April 27, 2023 - Venue: WASECO building, 10 Pho Quang, ward 2, Tan Binh district, Ho Chi Minh city.