X0306 4 2020-06-29 0 0001802749 GigCapital3, Inc. GIK-UN 0001808998 GigAcquisitions3, LLC C/O GIGCAPITAL3, INC. 1731 EMBARCADERO ROAD, SUITE 200 PALO ALTO CA 94303 0 0 1 0 0001451693 Katz Avi S C/O GIGCAPITAL3, INC. 1731 EMBARCADERO ROAD, SUITE 200 PALO ALTO CA 94303 1 0 1 0 Common Stock 2020-06-29 4 D 0 750000 0.00 D 5635000 D The shares of Common Stock ("Shares") are held directly by the Reporting Person ("Sponsor"). The Shares held by the Sponsor are beneficially owned by Dr. Avi Katz, the Issuer's Executive Chairman of the Board of Directors, Chief Executive Officer, President and Secretary. Dr. Katz is also the Manager of the Sponsor, who has sole voting and dispositive power over the Shares held by the Sponsor. The Shares that have been disposed were surrendered to the Issuer and cancelled by the Issuer upon surrender pursuant to the terms of the agreement under which the Shares were initially acquired by the Sponsor. Includes 650,000 shares included in 650,000 Private Units previously reported in the Form 4 filed by the Reporting Persons on May 15, 2020. Each unit consists of one share of Common Stock and three-quarters of one redeemable warrant of the Issuer. /s/ Dr. Avi S. Katz, Manager of GigAcquisitions3, LLC. 2020-07-01