Company: QTIWW
Filing Date: 2025-12-31
Form Type: 424B3
Source: 0001628280-25-059235
Chunk: 23

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-12-31
Form: 424B3
Chunk 23
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 a Current Report on Form 8-K filed on March 5, 2024 with the SEC, the Company, as consideration for the Pre-Paid Advance, on March 4, 2024 issued to Yorkville a promissory note (the “

#### Yorkville Note
”, and together with the SEPA, the “

#### Yorkville Financing Documents
”). The parties subsequently amended the Yorkville Financing Documents pursuant to that certain First Amendment to the Yorkville Financing Documents, dated September 26, 2024 (the “

#### First Amendment
”), that certain Second Amendment, dated October 31, 2024 to the Yorkville Financing Documents (the “

#### Second Amendment
”), and that certain Third Amendment, dated January 9, 2025 (the “

#### Third Amendment
”).

On February 26, 2025, the Company used a portion of the proceeds of the Lynrock Lake Term Loan to pay Yorkville an amount equal to $3,000,000 in cash and issued to Yorkville warrants, which if the Reverse Stock Split had occurred prior to the time of such issuance, would have been warrants to purchase 15,000,000 sh ares of its Common Stock at an exercise price of per share (and following the Reverse Stock Split, 5,000,071 shares of its

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Common Stock at an exercise price of $1.20 per share) pursuant to a Warrant to Purchase Common Stock (the “

#### Yorkville Warrant
”) to fully settle and discharge the Company’s obligations under the Yorkville Note and extinguish the Yorkville Note as having been fully performed. The Yorkville Warrant was exercisable until February 26, 2030. The Yorkville Warrant was also subject to adjustments in the event that the Company’s Common Stock undergoes a split, reverse-split or similar event. Furthermore, the Yorkville Warrant has provided the holder with piggyback registration rights. The Company used the proceeds of Tranche B of the Amended Credit Agreement to repurchase the Yorkville Warrant for an aggregate price of $5.0 million.

The Company and Yorkville also entered into that certain Termination Agreement, dated February 26, 2025 (the “

#### Termination Agreement
”), pursuant to which the parties acknowledged the termination of the SEPA and the other Yorkville Financing Documents, effective as of February 26, 2025, as result of all parties