Company: QTIWW
Filing Date: 2025-02-05
Form Type: 424B3
Source: 0001628280-25-004061
Chunk: 338

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-02-05
Form: 424B3
Chunk 338
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 ended December 31, 2023, one customer represented 49% of revenue. During the year ended December 31, 2022, one customer represented 98% of revenue. As of December 31, 2023, one customer represented 100% of accounts receivable. As of December 31, 2022, there were no customer concentrations in accounts receivable.

<div align='center'>F-9</div>

#### QT IMAGING, INC.

### NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
<div align='center'>For the years ended December 31, 2023 and 2022</div>

The Company’s products require approvals from the Food and Drug Administration and international regulatory agencies prior to commercialized sales. The Company’s future products may not receive required approvals. If the Company was denied such approvals, or if such approvals were delayed, it would have a material adverse impact on the Company’s business, results of operations and financial condition.

Certain components and services used to manufacture and develop the Company’s products are presently available from only one or a limited number of suppliers or vendors. The loss of any of these suppliers or vendors would potentially require a significant level of hardware and/or software development efforts to incorporate the products or services into the Company’s product.

#### Cash and Cash Equivalents
The Company considers all short-term investments with a maturity of three months or less when purchased to be cash equivalents. The Company had restricted cash equivalents of $20,000 as of December 31, 2023 and 2022.

#### Restricted Cash
Restricted cash is comprised of cash held in an account subject to a collateral agreement to be used for the Company’s corporate credit card program.

#### Accounts Receivable
Accounts receivable are carried at the amount due. Accounts receivable are written off when management deems all realistic efforts to collect the amount outstanding have been exhausted. A provision for credit losses is estimated by management based on evaluations of its historical bad debt and current collection experience. As of December 31, 2023 and 2022, a provision for credit losses was not required.

#### Inventory
Inventory is stated at the lower of cost or net realizable value. Cost is determined using the weighted-average cost method. The Company periodically reviews the value of items in inventory and provides write-offs of inventory that is obsolete. Appropriate consideration is given to obsolescence, excessive levels, deterioration, and other factors in evaluating net realizable value. Once inventory has been written down below cost,