Company: QTIWW
Filing Date: 2025-02-12
Form Type: S-8
Source: 0001844505-25-000024
Chunk: 0

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-02-12
Form: S-8
Chunk 0
---
<div align='center'>As filed with the Securities and Exchange Commission on February 12, 2024</div>

#### Registration No. 333-

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### FORM S-8

### REGISTRATION STATEMENT

#### UNDER

#### THE SECURITIES ACT OF 1933

#### QT Imaging Holdings, Inc.
<div align='center'>(Exact name of registrant as specified in its charter)</div>

| Delaware                        |     | 86-1728920            |
| (State or other jurisdiction of 
 incorporation or organization)  |     | -I.R.S. Employer      
 Identification Number |

#### QT Imaging Holdings, Inc. 2024 Incentive Plan
<div align='center'>(Full title of the plan)</div>

#### Dr. Raluca Dinu

#### Chief Executive Officer

#### 3 Hamilton Landing, Suite 160

#### Novato, CA 94949
(650) 276-7040

<div align='center'>(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copy to:</div>

#### Jeffrey C. Selman
DLA Piper LLP (US)

#### 555 Mission Street, Suite 2400

#### San Francisco, CA 94105
<div align='center'>(415) 615-6035</div>

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act:

| Large accelerated filed |     | ☐ |     | Accelerated filer         |     | ☐ |
| Non-accelerated filer   |     | ☒ |     | Smaller reporting company |     | ☒ |
|                         |     |   |     | Emerging growth company   |     | ☒ |

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

### EXPLANATORY NOTE
This