X0306 4 2021-08-16 0 0001674930 Fulgent Genetics, Inc. FLGT 0001684532 Gao Hanlin C/O FULGENT GENETICS, INC. 4978 SANTA ANITA AVE, STE 205 TEMPLE CITY CA 91780 0 1 0 0 Chief Scientific Officer Common Stock 2021-08-16 4 S 0 314 95.1227 D 815959 D The shares were sold by the reporting person to generate proceeds used to satisfy the tax withholding obligation that arose upon the vesting of certain restricted stock units granted to the reporting person on August 1, 2019. The shares were sold in multiple transactions at prices ranging from $94.6257 to $96.0400, inclusive. The reported price reflects the weighted-average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected. /s/ Paul Kim as Attorney-in-Fact 2021-08-18