Company: QTIWW
Filing Date: 2025-02-05
Form Type: 424B3
Source: 0001628280-25-004061
Chunk: 377

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-02-05
Form: 424B3
Chunk 377
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 | * |     |      |    | * |     |                   |    | * |     |      | 14 | % |
| Customer F                |     |                          |    | * |     |                   | 100 | % |     |                    |    | * |     |      |    | * |     |                   |    | * |     |      |    | * |
| Customer G                |     |                          |    | * |     |                   |     | * |     |                    |    | * |     |      | 77 | % |     |                   |    | * |     |      | 54 | % |
| Customer H                |     |                          |    | * |     |                   |     | * |     |                    |    | * |     |      | 16 | % |     |                   |    | * |     |      | 11 | % |
|                           |     |                          | 96 | % |     |                   | 100 | % |     |                    | 96 | % |     |      | 93 | % |     |                   | 98 | % |     |      | 97 | % |

__________________

* Total less than 10% for the period.

There are inherent risks whenever a large percentage of total revenue is concentrated in a limited number of customers. Should a significant customer which is a party to a contract with the Company under which the Company derives revenue terminate or fail to renew its contracts with the Company, in whole or in part, for any reason, or experience significant financial or operating difficulties, it could have a material adverse effect on the Company’s financial condition and results of operations. In general, a customer that makes up a significant portion of revenues in one period, may not make up a significant portion in subsequent periods. However, as the Company has entered into a Distribution Agreement with NXC Imaging, Inc. (“NXC”) on June 18, 2024, by which the Company appointed NXC as the exclusive reseller to market, advertise, and resell certain equipment in the U.S. and U.S. territories, the Company expects that NXC will make up a significant portion of revenues in each period in which such Distribution Agreement is in effect. Customer A in the concentration table above is NXC, which resold the

<div align='center'>F-35</div>

#### QT IMAGING HOLDINGS, INC.

### Notes to Condensed Consolidated Financial Statements