Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 312

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 312
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, over the Internet at the SEC’s website at http://www.sec.gov .

Our website address is https://www.qtimaging.com. Through our website, we make available, free of charge, the following documents as soon as reasonably practicable after they are electronically filed with, or furnished to, the SEC, including our Annual Reports on Form 10-K; our proxy statements for our annual and special stockholder meetings; our Quarterly Reports on Form 10-Q; our Current Reports on Form 8-K; Forms 3, 4, and 5 and Schedules 13D with respect to our securities filed on behalf of our directors and our executive officers; and amendments to those documents. The information contained on, or that may be accessed through, our website is not a part of, and is not incorporated into, this prospectus.

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### INDEX TO FINANCIAL STATEMENTS
Audited Consolidated Financial Statements of QT Imaging Holdings, Inc. as of December 31, 2024 and 2023 and for the Years Ended December 31, 2024 and 2023

| Report of Independent Registered Public Accounting Firm (PCAOB ID: 207)                                   
 Consolidated Balance Sheets as of December 31, 2024 and 2023                                              
 Consolidated Statements of Operations and Comprehensive Loss for theYearsEnded December 31, 2024 and 2023 |     | Page 
 F-3  
 F-4  
 F-5  |
|:----------------------------------------------------------------------------------------------------------|:----|:-----|
| Consolidated Statements of Stockholders’ Deficit for theYearsEnded December 31, 2024 and 2023             |     | F-6  |
| Consolidated Statements of Cash Flows for theYearsEnded December 31, 2024 and 2023                        |     | F-8  |
| Notes to Consolidated Financial Statements                                                                |     | F-10 |

Unaudited Consolidated Financial Statements of QT Imaging Holdings, Inc. as of September 30, 2025 and December 31, 2024 and for the Three and Nine Months Ended September 30, 2025 and 2024

| Condensed Consolidated Balance Sheets as ofSeptember30, 2025 and December 31, 2024 (Unaudited)                                               
 Condensed Consolidated Statements of Operations and Comprehensive Loss for theThree andNineMonthsEndedSeptember30, 2025 and 2024 (