Document

S-8 1 s-8x2026x09x22xieipmark.htm S-8 Document

As filed with the Securities and Exchange Commission on September 22, 2025

Registration No. 333-

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-8

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

QT Imaging Holdings, Inc.

(Exact name of registrant as specified in its charter)



Delaware						86-1728920
(State or other jurisdiction of incorporation or organization)						(I.R.S. Employer Identification No.)

3 Hamilton Landing, Suite 160

Novato, CA 94949

(Address, including Zip Code, of Principal Executive Offices)

QT Imaging Holdings, Inc. Inducement Equity Incentive Plan, as amended
(Full title of the plan)

Dr. Raluca Dinu

Chief Executive Officer

3 Hamilton Landing, Suite 160

Novato, CA 94949
Tel: (415) 842-7250

(Name, address, and telephone number, including area code, of agent for service)

Copy to:

Jeffrey C. Selman, Esq.
DLA Piper LLP (US)

555 Mission Street, Suite 2400

San Francisco, CA 94105

(415) 615-6095

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act:

Large accelerated filer

☐

Accelerated filer

☐

Non-accelerated filer

☒

Smaller reporting company

☒

Emerging growth company

☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

EXPLANATORY NOTE

This Registration Statement on Form S-8 (this “Registration Statement”) is filed by QT Imaging Holdings, Inc., a Delaware corporation (the “Registrant”) to register 150,000 shares of common stock, par value $0.0001 per share, of the Registrant (“Common Stock”) that are newly authorized for issuance under the Registrant’s Inducement Equity Incentive Plan, as amended (the “Plan”).

Initial shares of the Plan were registered pursuant to that certain Registration Statement on Form S-8 (File No. 333-289906), filed with the Securities and Exchange Commission (the “Commission”) on August 28, 2025 (the “August Registration Statement”). Additional shares offered pursuant to the Plan were registered pursuant to that certain Registration Statement on Form S-8 (File No. 333-291528), filed with the Commission on November 14, 2025 (the “November Registration Statement” and together with the August Registration Statement, the “IEIP Registration Statements”). Pursuant to General Instruction E to Form S-8 regarding registration of additional securities, the entire contents of the IEIP Registration Statements are incorporated herein by reference.

PART II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference.

The following documents previously filed by the Registrant with the Commission under the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), are incorporated by reference into this Registration Statement:

•The Registrant’s Annual Report on Form 10-K for the year ended December 31, 2025, filed with the Commission on March 25, 2026;

•The Registrant’s Quarterly Reports on Form 10-Q for the quarterly period ended on March 31, 2026, filed with the Commission on May 13, 2026; and for the quarterly period ended June 30, 2026, filed with the Commission on August 12, 2026;

•The Registrant’s Current Reports on Form 8-K filed with the Commission on January 20, 2026, January 23, 2026, January 27, 2026, February 6, 2026, March 25, 2026 at 8:13:59 a.m. EDT, May 21, 2026, July 28, 2026, and August 31, 2026; and

•The description of the Registrant’s Common Stock contained in the Registrant’s Registration Statement on Form 8-A (File No. 001-40839), filed with the Commission on January 27, 2026, pursuant to Section 12 of the Exchange Act, including any amendment or report filed for the purpose of updating such description.

All documents subsequently filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post-effective amendment which indicates that all securities offered hereby have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference herein and to be a part hereof from the date of filing of such documents.

Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.

Item 8. Exhibits.

The following exhibits are filed as a part of or incorporated by reference into this Registration Statement:

Exhibit No.

Exhibit Description

Filed Herewith

Incorporated by Reference Herein from Form or Schedule

Filing Date

Commission File / Reg. Number

3.1

Second Amended and Restated Certificate of Incorporation of QT Imaging Holdings, Inc.

8-K

03/08/2024

001-40389

3.2

Amended and Restated Bylaws of QT Imaging Holdings, Inc., effective March 4, 2024.

8-K

03/08/2024

001-40389

4.1

Specimen Common Stock Certificate of GigCapital5, Inc.

S-1/A

09/20/2021

001-40839

5.1

Opinion of DLA Piper LLP (US)

23.1

Consent of BPM LLP, independent registered public accounting firm

23.2

Consent of DLA Piper LLP (US) (included in Exhibit 5.1).

24.1

Power of Attorney (included on the signature page to this Registration Statement).

99.1

Inducement Equity Incentive Plan, as amended.

107

Filing Fee Table.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Novato, California, on this 22nd day of September, 2026.



QT IMAGING HOLDINGS, INC.

By:									/s/ Dr. Raluca Dinu
Name:									Dr. Raluca Dinu
Title:									Chief Executive Officer

POWER OF ATTORNEY AND SIGNATURES

Each person whose signature appears below constitutes and appoints Dr. Raluca Dinu and Dr. Avi Katz and each or any one of them, his true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him and in his name, place and stead, in any and all capacities, to sign any and all amendments to this registration statement on Form S-8, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the United States Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them, or their or his substitutes or substitute, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, as amended, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

Name

Title

Date

/s/ Dr. Raluca Dinu

Chief Executive Officer, President, Secretary and Director

September 22, 2026

Dr. Raluca Dinu

(Principal Executive Officer)

/s/ Jay Jennings

Chief Financial Officer

September 22, 2026

Jay Jennings

(Principal Financial and Accounting Officer)

/s/ Dr. Avi Katz

Chairman of the Board of Directors

September 22, 2026

Dr. Avi Katz

/s/ Dr. John Klock

Director

September 22, 2026

Dr. John Klock

/s/ Daniel Dickson

Director

September 22, 2026

Daniel Dickson

/s/ Bryan Timm

Director

September 22, 2026

Bryan Timm

/s/ Prof. Zeev Weiner

Director

September 22, 2026

Prof. Zeev Weiner

/s/ James Greene

Director

September 22, 2026

James Greene