Changxun Sun, Founder of Yuntongxun

About Changxun Sun

Changxun Sun is the founder and chief executive officer of Cloopen Group Holding Limited (formerly Yuntongxun), a global intelligent communications cloud service provider. He established the company in 2013, which later went public under the stock symbol RAAS before entering a going-private merger agreement in May 2026. Sun holds substantial indirect ownership in the company through Cloopen Co., Ltd., a wholly-owned subsidiary.

Changxun Sun at a glance

• Company: Yuntongxun
• Total raised: $244M
• Latest round: Growth
• Investors: Sequoia Capital, Zhi Letter Capital, Trustbridge Partners VII, L.P., Trustbridge Partners V, L.P., Retail Technology Asia Limited, Novo Investment HK Limited
• Location: Beijing, China

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