Company: QTIWW
Filing Date: 2025-12-29
Form Type: S-1/A
Source: 0001628280-25-058960
Chunk: 390

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-29
Form: S-1/A
Chunk 390
---
 of accrued interest into common stock                         |     |   |    174,397 |     |   |         — |
| Extinguishment of accrued expenses in exchange for common stock          |     |   |          — |     |   | 3,760,000 |
| Debt issuance costs included in accrued expenses                         |     |   |          — |     |   |    40,740 |
| Conversion of long-term debt into common stock                           |     |   |    182,682 |     |   | 3,433,388 |
| Fair value of warrants issued in exchange for issuance of long-term debt |     |   | 16,496,084 |     |   |         — |
| Unpaid issuance costs related to sale of common stock and warrants       |     |   |    101,963 |     |   |         — |
| Conversion of accrued legal costs to debt                                |     |   |     25,000 |     |   |         — |
| Reclassification of warrant liability upon warrant modification          |     |   | 22,986,128 |     |   |         — |
| Deemed dividend                                                          |     |   |          — |     |   | 5,185,502 |

<div align='center'>The accompanying notes are an integral part of these condensed consolidated financial statements.

F-54</div>

#### QT IMAGING HOLDINGS, INC.

### Notes to Condensed Consolidated Financial Statements
<div align='center'>(Unaudited)</div>

1. The Company and Summary of Significant Accounting Policies

Nature of Operations

QT Imaging Holdings, Inc. and its subsidiaries (the “Company”), formerly known as GigCapital5, Inc. (“GigCapital5”), is incorporated in Delaware with headquarters in Novato, California. The Company is a medical device company engaged in research, development, and commercialization of innovative body imaging systems using low frequency sound waves. The Company strives to improve global health outcomes. Its strategy is predicated upon the fact that medical imaging is critical to the detection, diagnosis, and treatment of disease and that it should be safe, affordable, accessible, and centered on the patient’s experience. The Company’s initial product is a breast imaging system.

On March 4, 2024 (the “ Closing Date ” or “ Merger Date ” ), QT Imaging, Inc. ( “ QT Imaging ” ), GigCapital5, and QTI Merger Sub, Inc. ( “ Q