Form 4 Filing for 111, Inc. by Teo Nee Chuan

This SEC filing details transactions made by Teo Nee Chuan, a director at 111, Inc., a company trading under the symbol YI. The filing, dated May 13, 2026, reports on the ownership of RSUs (Class A). On September 12, 2018, 19,984 RSUs were acquired. Subsequently, on May 11, 2026, 378,737 RSUs were granted, with a total of 398,721 RSUs held post-transaction. Another grant of 413,168 RSUs occurred on May 12, 2026, resulting in 811,889 RSUs held after this transaction. These RSUs represent contingent rights to receive Class A ordinary shares. Footnotes clarify that some RSUs have fully vested, while others have specific vesting schedules tied to service anniversaries.