Billy Yiu is a corporate Of Counsel in the Hong Kong office of Wilson Sonsini Goodrich & Rosati, where he focuses on corporate finance, public mergers and acquisitions, corporate governance and regulatory compliance matters, and initial public offerings.
Prior to joining the firm, Billy was an associate at another leading U.S. law firm. He is fluent in English, Cantonese, and Mandarin.
Experience
Billy Yiu is a corporate Of Counsel in the Hong Kong office of Wilson Sonsini Goodrich & Rosati, where he focuses on corporate finance, public mergers and acquisitions, corporate governance and regulatory compliance matters, and initial public offerings.
Prior to joining the firm, Billy was an associate at another leading U.S. law firm. He is fluent in English, Cantonese, and Mandarin.
Education
- Postgraduate Certificate in Laws (PCLL), University of Hong KongWith Distinction
- LL.B., University of Hong Kong
- B.B.A. (Law), University of Hong Kong
Admissions
- The High Court of Hong Kong
Credentials
Education
- Postgraduate Certificate in Laws (PCLL), University of Hong KongWith Distinction
- LL.B., University of Hong Kong
- B.B.A. (Law), University of Hong Kong
Admissions
- The High Court of Hong Kong
Select Representations
- WuXi AppTec Co., Ltd. on its HK$7.37 billion placing (through Morgan Stanley, Huatai, Goldman Sachs, and J.P. Morgan as the placing agents)
- Ascentage Pharma Group International on its HK$702 million placing (through Citi and J.P. Morgan as the placing agents)
- CIMC-TianDa Holdings Company Limited on its acquisition of 60 percent of the equity interests in Shenyang Jietong Fire Truck Co., Ltd., a leading fire engine and aerial lifting fire truck manufacturer, at a consideration of RMB600 million*
- WH Group Limited on its internal restructuring which involves the merger by absorption of Henan Luohe Shuanghui Industry Group Co., Ltd., its indirect wholly-owned subsidiary, by Shenzhen-listed Henan Shuanghui Investment & Development Co., Ltd., its indirect non-wholly owned subsidiary, at a consideration of approximately RMB40.17 billion*
- COSCO SHIPPING Development Co., Ltd. on its proposed repurchase of A shares and H shares in the aggregate amount of not less than RMB200 million and up to RMB300 million*
*Denotes matters handled prior to joining the firm
Matters
Select Representations
- WuXi AppTec Co., Ltd. on its HK$7.37 billion placing (through Morgan Stanley, Huatai, Goldman Sachs, and J.P. Morgan as the placing agents)
- Ascentage Pharma Group International on its HK$702 million placing (through Citi and J.P. Morgan as the placing agents)
- CIMC-TianDa Holdings Company Limited on its acquisition of 60 percent of the equity interests in Shenyang Jietong Fire Truck Co., Ltd., a leading fire engine and aerial lifting fire truck manufacturer, at a consideration of RMB600 million*
- WH Group Limited on its internal restructuring which involves the merger by absorption of Henan Luohe Shuanghui Industry Group Co., Ltd., its indirect wholly-owned subsidiary, by Shenzhen-listed Henan Shuanghui Investment & Development Co., Ltd., its indirect non-wholly owned subsidiary, at a consideration of approximately RMB40.17 billion*
- COSCO SHIPPING Development Co., Ltd. on its proposed repurchase of A shares and H shares in the aggregate amount of not less than RMB200 million and up to RMB300 million*
*Denotes matters handled prior to joining the firm
Focus Areas
Recent Insights
Client Highlights
Wilson Sonsini Advises WuXi AppTec on Issuance of RMB6,780 Million USD Settled Zero Coupon Convertible Bonds Due 2027
On May 21, 2026, all the conditions precedent under the subscription agreement dated May 14, 2024, entered into between WuXi AppTec Co., Ltd. (WuXi AppTec), Morgan Stanley Asia Limited, Citigroup Global Markets Limited, and Goldman Sachs (Asia) L.L.C. have been fulfilled and the issuance of the RMB6,780 million USD settled zero coupon convertible bonds due 2027 (the Bonds) in an aggregate principal amount of RMB6,780 million was completed. The net proceeds from the subscription of the Bonds, after deducting the managers’ commissions and expenses in connection with the offering, will be approximately US$1,023 million, and will be utilized in the following manner: (a) approximately 90 percent will be used for global capacity and capability expansion and (b) approximately 10 percent will be used for general corporate purposes. A formal application has been made to the Vienna Stock Exchange for the listing of the Bonds on the Vienna Stock Exchange.
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Client Highlights
Wilson Sonsini Advises Boyu Capital on $110 Million Convertible Bond Investment in Gushengtang
On January 26, 2026, Gushengtang Holdings Limited (Gushengtang) announced that it had entered into a subscription agreement with an investment vehicle of Boyu Capital for the issuance and subscription of convertible bonds of Gushengtang in the aggregate principal amount of $110 million.
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