Company: QTIWW
Filing Date: 2025-07-17
Form Type: DEF 14A
Source: 0001844505-25-000069
Chunk: 4

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-07-17
Form: DEF 14A
Chunk 4
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 31, 2024, compared to less than $0.1 million for the year ended December 31, 2023. The Company shipped twelve QT Breast Acoustic CT TM Scanners in 2024, of which eleven were for commercial shipments and one was for the NIH program, compared to no shipments in 2023.

• Gross margin during the year ended December 31, 2024 was 54%, compared to a negative margin during the year ended December 31, 2023. The Company did not have commercial revenue in 2023 and therefore the comparison of gross margins is not meaningful.

• Net loss for the year ended December 31, 2024 was $9.0 million, which included $3.6 million of non-cash interest expense, $0.3 million of stock-based compensation expense, $0.2 million of warrant modification expense, $0.4 million of loss on debt extinguishment, and a combined $8.0 million other income from decrease in fair value of derivatives and earnout liabilities. Net loss for the year ended December 31, 2023 was $6.1 million, which included $0.7 million in stock-based compensation, $0.4 million of debt conversion loss, and $0.2 induced conversion expense.

• Net cash used in operating activities during the year ended December 31, 2024 was $10.0 million, compared to $2.7 million during the year ended December 31, 2023.

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#### TABLE OF CONTENTS

#### QT IMAGING HOLDINGS, INC.
<div align='center'>THREE HAMILTON LANDING, SUITE 160, NOVATO, CA 94949</div>

### PROXY STATEMENT FOR ANNUAL MEETING OF STOCKHOLDERS

#### TO BE HELD AUGUST 19, 2025
The board of directors (the “ Board of Directors ” or “ Board ”) of QT Imaging Holdings, Inc. is soliciting your proxy for the 2025 Annual Meeting of Stockholders to be held on August 19, 2025, or any adjournment or postponement thereof, for the purposes set forth in the accompanying Notice of Annual Meeting of Stockholders (the “ Notice ”). This Proxy Statement and related materials are first being made available to stockholders on or about July 16, 2025. References in this Proxy Statement to the “ Company ,”