1. When was the Company incorporated?

Sentage Holdings Inc. was incorporated in the Cayman Islands on September 16, 2019.

2. When did the Company become a public company?

July 9, 2021

3. When is the Company's fiscal year end?

December 31

4. Who is the Company’s independent auditor?

Enrome LLP

1 NORTH BRIDGE ROAD, #06-37, HIGH STREET CENTRE, SINGAPORE 179094

Tel: +65 8200 7255

5. Who is the Company’s legal counsel?

Hunter Taubman Fischer & Li LLC

800 Third Avenue, Suite 2800 New York, NY 10022

Tel: 212- 530-2206

Fax: 212- 202-6380

6.Who is the Company’s transfer agent?

Transhare Corporation

Bayside Center 1, 17755 US Highway 19 N, Suite 140, Clearwater FL 33764

Tel: 303-662-1112

Fax: 727-269-5616