Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 260

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 260
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     |               | 196,666 |     | $         | 2.25 |     |            |     | 07/03/2034 |
| Anastas Budagov |     | 07/03/2024    |     |             | — |     |               | 108,333 |     | $         | 2.25 |     |            |     | 07/03/2034 |

#### Director Compensation
None of the non-employee directors received compensation during the fiscal years ended December 31, 2024 and 2023 for services rendered to the Company.

#### Rule 10b5-1 Sales Plans
Our directors and executive officers may adopt written plans, known as Rule 10b5-1 plans, in which they will contract with a broker to buy or sell shares of our Common Stock on a periodic basis. Under a Rule 10b5-1 plan, a broker executes trades pursuant to parameters established by the director or executive officer when entering into the plan, without further direction from them. The director or executive officer may amend a Rule 10b5-1 plan in some circumstances and may terminate a plan at any time. Our directors and executive officers also may buy or sell additional shares outside of a Rule 10b5-1 plan when they are not in possession of material nonpublic information, subject to compliance with the terms of our insider trading policy. The sale of any shares under such a plan will be subject to the Lock-Up Agreements, to the extent that the selling director or executive officer is a party thereto.

#### Emerging Growth Company Status
QT Imaging Holdings is an “emerging growth company,” as defined in the JOBS Act. As an emerging growth company, it is exempt from certain requirements related to executive compensation, including the requirements to hold a nonbinding advisory vote on executive compensation and to provide information relating to the ratio of total compensation of its chief executive officer to the median of the annual total compensation of all of its employees, each as required by the Investor Protection and Securities Reform Act of 2010, which is part of the Dodd-Frank Wall Street Reform and Consumer Protection Act.

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### CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS

#### GigCapital5 Related Agreements

#### Registration Rights Agreement
In connection with the Business Combination, at the closing, the Company, GigAcquisitions5 and certain securityholders of GigCapital5 and QT Imaging entered into the