Ownership Filing by Peter Si Ngai Yeung

This filing details the ownership of Aurora Mobile Ltd (JG) by Peter Si Ngai Yeung. As of March 16, 2026, Mr. Yeung directly holds 45,736 American depositary shares. Additionally, he was granted 8,711,800 restricted share units (RSUs) on August 1, 2025, which are set to fully vest on August 1, 2026. Each RSU represents a contingent right to one Class A common share upon vesting. The filing indicates that Mr. Yeung is a director of the company. Every three American depositary shares represent 40 Class A common shares.