X0508 4 2024-09-04 1 0001844505 QT IMAGING HOLDINGS, INC. QTI 0001451693 Katz Avi S C/O QT IMAGING HOLDINGS, INC. 3 HAMILTON LANDING, SUITE 160 NOVATO CA 94949 1 1 0 0 Chairman 0001844511 GigAcquisitions5, LLC C/O QT IMAGING HOLDINGS, INC. 3 HAMILTON LANDING, SUITE 160 NOVATO CA 94949 0 0 1 0 0 Common Stock 2024-09-04 4 J 0 5735000 0 D 0 I By GigAcquisitions5, LLC Common Stock 2024-09-04 4 J 0 161954 0 A 187070 D Distribution of shares of Common Stock to direct and indirect members of GigAcqusitions5, LLC (the "Sponsor"). The Common Stock is held directly by Sponsor. The shares held by the Sponsor are beneficially owned by Dr. Katz. Dr. Katz is also the Manager of the Sponsor, who has sole voting and dispositive power over the shares held by the Sponsor. Upon the completion of the distribution of the shares of Common Stock to its direct and indirect members, the Sponsor is no longer a 10% Owner of the Issuer and is no longer subject to Section 16. /s/ Dr. Avi S. Katz 2024-09-11 /s/ Dr. Avi S. Katz, Managing Member 2024-09-11