Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 19

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 19
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 by the FDA) to conduct a Field Correction, Market Withdrawal, Stock Recovery, or Recall (as such terms are defined by the FDA); any action by the Company or any regulatory authority to temporarily suspend shipments or manufacturing of QT Breast Scanners; or issues related to the Company’s business operations) within six months from the date of the onset of such an event. For these purposes, “Epidemic Failures” means a malfunctioning of five or more QT Breast Scanners collectively presumed to have a common underlying cause based on a reasonable evaluation. Following a termination or expiration of the Canon Manufacturing Agreement, the provisions with respect to the grants of licenses to the IPR of the Company will survive up to the earlier of (a) the end of the five-year lifetime of the QT Breast Scanners sold to NXC and (b) December 31, 2031.

#### Lynrock Lake Term Note
On February 26, 2025, the Company entered into the Credit Agreement that provides a senior secured term note with Lynrock Lake. T he Credit Agreement is secured by a first priority lien on substantially all assets of the Company and its domestic subsidiaries, QT Imaging and QT Ultrasounds Labs, Inc. (“

#### QT Ultrasounds Labs
” and together with QT Imaging, the “

#### Guarantors
”), a Delaware corporation, and provides for a term loan in the aggregate principal amount of $10,100,000 at an interest rate of 10.0% per annum, compounded quarterly by adding the

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

amount thereof to the unpaid principal amount. The obligations of the Company under the Credit Agreement are guaranteed by each of the Guarantors. The maturity date of the Credit Agreement is March 31, 2027 (the “

#### Maturity Date
”). A portion of the proceeds is expected to be used to satisfy the Company’s outstanding obligations under the Cable Car Note and the Yorkville Note (each as defined below).

The senior secured term loan shall be repaid on the Maturity Date in an amount equal to the aggregate principal amount outstanding, together with all accrued and unpaid principal and any outstanding and payable fees.

Subject to the payment of the Make-Whole Amount (as defined in the Credit Agreement), the Company may at any time prior to the Maturity Date optionally prepay the term loan, in full or in part, upon irrevocable written notice of three (3) business days prior to the proposed prepayment; provided that if