“A New Chapter: Nguyễn Thị Vinh’s Visionary Journey to Becoming a Major Stakeholder in Sách Thái Nguyên”

Nguyen Thi Vinh, Chairwoman of the Board of Directors of Thai Nguyen Book Publishing JSC (code: STH on UPCoM), has recently registered to purchase 3.5 million STH shares from September 3rd to October 2nd, equivalent to more than 18% of the capital. The purpose of this acquisition is portfolio restructuring.

Notably, Ms. Vinh’s decision to accumulate shares comes just three months after she sold nearly 2.2 million STH shares, representing 11.05% of the capital, on June 5th through a matched transaction. Ms. Nguyen Thi Vinh was elected to the Board of Directors for the 2023-2027 term at the 2025 Extraordinary General Meeting of Shareholders held in late July.

The STH share price currently hovers around 20,000 VND per share, implying that the Chairwoman of Thai Nguyen Book Publishing JSC will need to spend approximately 70 billion VND to complete the transaction.

In related news, Ms. Nguyen Thi Quy, Ms. Vinh’s sister, sold her entire holding of 500,000 STH shares (equivalent to 2.56% of capital) on August 21st, earning nearly 12 billion VND.

Ms. Nguyen Thi Quy previously served as General Director and Member of the Board of Directors of Thai Nguyen Book Publishing JSC until her resignation in early July.

Prior to this, Thai Hung Trading JSC, a company owned by the families of Ms. Vinh and Ms. Quy, successfully sold over 8.6 million STH shares from August 5th to August 21st, reducing their ownership from 52.31% to 8%, equivalent to 1.56 million shares.

Conversely, the new General Director of Thai Nguyen Book Publishing JSC, Mr. Le Tuan Dung, registered to purchase nearly 4.2 million STH shares from August 5th to September 3rd, aiming to increase his ownership from 0% to 21.36%.

Similarly, STH Gateway Co., Ltd., where Mr. Dung also serves as General Director, registered to buy an additional 6.5 million STH shares during the same period to increase its holding from 24.9% to over 58.4%. The transaction purpose has been approved by the Extraordinary General Meeting of Shareholders, allowing the acquisition without a public offering.

STH Gateway officially became a major shareholder of Thai Nguyen Book Publishing JSC after acquiring more than 4.5 million STH shares in June 2025, increasing its ownership from 1.69% to nearly 25%.

STH Gateway, formerly known as Pearson Gateway Co., Ltd., is headquartered in Hanoi with a charter capital of 50 billion VND. The company operates in the field of education and is wholly owned by Mr. Le Tuan Dung.

During August, Thai Nguyen Book Publishing JSC welcomed another major shareholder, Sigma Group JSC, which acquired nearly 4.2 million STH shares, equivalent to 21.36% of the capital, through a matched transaction on August 15th.

Interestingly, Sigma Group was established on the same day as STH Gateway, March 31st, 2025, with a current charter capital of 15 billion VND. The company is founded by three individuals, with Director Nguyen Thi Thao holding 30%, Chu Thi Van Anh contributing 55%, and Le Dang Khoa owning the remaining 15%.