Quantgroup Holding Limited announced that Mr. Zhou Qiang has tendered his resignation as an executive director, the chief technology officer of the company and from all other positions in the group, and that Ms. Liu Fangwei has tendered her resignation as a non-executive director of the company and from all other positions in the group, all with effect from March 2, 2026, due to change in career development plans and personal reasons. The board announced that Mr. Zhang Yanshen has been appointed as an executive director and the chief operating officer of the company, and that Mr. Tan Feng has been appointed as an executive director and the chief technology officer of the company, all with effect from March 2, 2026. Mr. Zhang, aged 32, obtained his Master of Accountancy in International Accounting & Financial Management from the University of Glasgow in 2017 and his bachelor?s degree in Economics, majoring in Finance, from Shenyang Agricultural University in 2016.

Mr. Zhang first joined the group in January 2024 as strategy manager, where he was responsible for the overall strategic development of the group?s e-commerce business until August 2024. Mr. Zhang rejoined the group in December 2025 as vice president and was later appointed as the chief operating officer of Quant Digit Tech Co. Ltd., one of the group?s subsidiaries.

From September 2017 to November 2018, he served as an investment manager at Haitou Financial Services Information (Beijing) Co. Ltd., where he was responsible for macro and industry research, due diligence and screening of investment projects in emerging market consumer sectors, investor roadshows and post-investment management. In January 2019, he co-founded Beijing Yasen Strategy Information Technology Co.

Ltd., a company specializing in consumer technology services, where he served as chief operating officer and was responsible for strategic planning and business operations until August 2020. In January 2021, he founded Puzhi Technology Co. Ltd., a company specializing in cross-border e-commerce business, where he served as chief executive officer and was responsible for the formulation and implementation of cross-border e-commerce strategy, team building, e-commerce brand creation and domestic and overseas channel expansion until October 2025.

Mr. Zhang has extensive experience in consumer investment, brand strategy, and cross-border e-commerce sectors. Mr. Tan, aged 38, obtained his doctoral degree in Robotics from the Department of Mechanical Engineering at the Massachusetts Institute of Technology in 2016, with a research focus on core robotic technologies such as nonlinear control, artificial intelligence, autonomous systems, and analytical SLAM algorithms and his bachelor?s degree in Mechanical Engineering and Automation from the Department of Precision Instrument and Mechanology of Tsinghua University in 2010, where he focused on the development of wall-climbing robots and bipedal walking robots. Mr. Tan founded Woobo Inc. in January 2016, a company focused on developing AI-powered robotic educational solutions for preschool children, where he served as the chief executive officer until January 2020.

From May 2021 to October 2025, Mr. Tan served as the chief technology officer of a startup specializing in smart hardware, where he led the design of full-stack smart mobility architectures and core algorithms and oversaw the deployment of integrated software and hardware systems. Mr. Tan has over 10 years of experience in research and development, productization, and commercialization in the fields of artificial intelligence and smart hardware, and embodied intelligence technologies. Mr. Tan has also been appointed as the chief technology officer of Quant Digit Tech, with effect from March 2, 2026.