HashKey Announced That It Has Finalized a $40 Million Investment Agreement and Established a Comprehensive Strategic Partnership with SignalPlus

HONG KONG, May 20, 2026 —— HashKey Holdings Limited ("HashKey" or the "Company", Stock Code: 3887.HK), a leading comprehensive digital asset company in Asia, announced today that a fund managed by HashKey Capital, its asset management arm, has finalized an investment agreement with SignalPlus, a crypto asset derivatives trading service platform. Under the agreement, the fund led SignalPlus's Series B+ funding round with a $40 million investment, of which HashKey Group contributed $20 million. Alongside this investment, HashKey will enter into a comprehensive strategic partnership with SignalPlus to jointly promote the long-term development of the industry.

SignalPlus is a leading institutional-grade infrastructure platform in the crypto derivatives space that focuses on option trading systems, automated market-making, and structured product solutions. Currently, the services provided by SignalPlus are deeply integrated into the mainstream crypto options markets and it holds a leading market share in Asia. The fund managed by HashKey led the seed round for SignalPlus. It also made additional investments in the additional investment rounds. This investment is a deep and long-term partnership between the two companies and it reflects HashKey's confidence in SignalPlus's technical capabilities, market position, and industry prospects.

Dr. Xiao Feng, Chairman and CEO of HashKey Group, stated: "We are very pleased to further offer a deeper capital commitment and reach this cooperation with SignalPlus. Currently, global institutional capital is accelerating its convergence into the crypto derivatives and the market's demand for compliant, robust, and highly professional institutional-grade infrastructure is becoming increasingly apparent. In the future, HashKey and SignalPlus will jointly promote product innovation and global business expansion through well-rounded strategic cooperation."

Leveraging this investment and strategic cooperation, HashKey and SignalPlus will combine their respective strengths in the digital asset space and derivatives trading technology to jointly expand the global institutional services market by enhancing their strategic competitiveness and influence within the global digital asset derivatives ecosystem.

---

About HashKey Holdings Limited

HashKey Holdings Limited ("HashKey" or the "Company", Stock Code: 3887.HK) is a mature, comprehensive digital asset company in Asia with a global footprint, building a digital asset ecosystem by providing end-to-end financial infrastructure, technology, and investment management. The Company provides trading facilitation services, on-chain services, and asset management services through licensed digital asset platforms.