Company: QTIWW
Filing Date: 2025-03-03
Form Type: 424B3
Source: 0001844505-25-000031
Chunk: 9

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-03-03
Form: 424B3
Chunk 9
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 Klock Note, pursuant to the Stanley Note Amendment, including to provide that the Stanley Note is not convertible into shares of the Company’s Common Stock and to remove the security interests and liens provided for by QT Imaging in the Stanley Note. In addition, the 2023 Klock Note Amendment, the 2022 Klock Note Amendment and the Stanley Note Amendment have extended the maturity date of each of the Pre-Combination Notes to October 21, 2027, and the aggregate principal amounts currently owing under the 2022 Klock Note, the 2023 Klock Note, and the Stanley Note are $2,643,725, $705,000, and $500,000, respectively.

This Current Report provides a summary of the 2023 Klock Note Amendment, the 2023 Klock Note, the 2022 Klock Note Amendment, the 2022 Klock Note, the Stanley Note Amendment, and the Stanley Note Amendment, the descriptions of which do not purport to be complete and is qualified in its entirety by the terms and conditions of such agreement.

Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The information required by this item is included in Item 1.01 and incorporated herein by reference.

Item 3.02 Unregistered Sales of Equity Securities.

The information set forth in Item 1.01, regarding the Lynrock Lake Warrant and the Yorkville Warrant, of this Current Report on Form 8-K is incorporated herein by reference.

#### Item 8.01 Other Events.
On February 27, 2025, the Company issued a press release announcing the Lynrock Lake Term Loan.

A copy of the press release issued by the Company is furnished as Exhibit 99.1 to this Current Report on Form 8-K and incorporated by reference.

### Item 9.01 Financial Statements and Exhibits.
(d) Exhibits:

| Exhibit No. 
 4.1         
 4.2         |     | Description                                                                                                                          
 Warrant to Purchase Common Stock, dated February 26, 2025, by and between QT Imaging Holdings, Inc. and Lynrock Lake Master Fund, LP 
 Warrant to Purchase Common Stock, dated February 26, 2025, by and between QT Imaging Holdings, Inc. and YA II PN, Ltd.               |
|:------------|:----|:-------------------------------------------------------------------------------------------------------------------------------------|
| 10.1