Certain Ordinary Shares of Sentage Holdings Inc. are subject to a Lock-Up Agreement Ending on 4-JAN-2022. These Ordinary Shares will be under lockup for 180 days starting from 8-JUL-2021 to 4-JAN-2022. Details: All of the directors and officers and our principal shareholders (5% or more shareholders) have agreed with the Underwriter, subject to certain exceptions, not to sell, transfer, or dispose of, directly or indirectly, any of our Ordinary Shares or securities convertible into or exercisable or exchangeable for our Ordinary Shares for a period of 180 days from the effective date of this registration statement.