8-A12B 1 ea0250892-8a12b_hcm3.htm FOR REGISTRATION OF CERTAIN CLASSES

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-A

FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES

PURSUANT TO SECTION 12(b) OR 12(g) OF THE

SECURITIES EXCHANGE ACT OF 1934

HCM III Acquisition Corp.

(Exact Name of Registrant as Specified in Its Charter)

Cayman Islands		98- 1854444
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

100 First Stamford Place, Suite 330 Stamford, CT		06902
(Address of Principal Executive Offices)		(Zip Code)

Securities to be registered pursuant to Section 12(b) of the Act:

Title of Each Class to be Registered		Name of Each Exchange on Which Each Class is to be Registered
Units, each consisting of one Class A ordinary share and one-third of one Redeemable Warrant		The Nasdaq Stock Market LLC
Class A ordinary shares, par value $0.0001 per share		The Nasdaq Stock Market LLC
Redeemable Warrants, each whole warrant exercisable for one Class A ordinary share at a price of $11.50 per share		The Nasdaq Stock Market LLC

If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c) or (e), check the following box. ☒

If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d) or (e), check the following box. ☐

If this form relates to the registration of a class of securities concurrently with a Regulation A offering, check the following box. ☐

Securities Act Registration Statement or Regulation A offering statement file number to which this form relates: 333-287841 (if applicable)

Securities to be registered pursuant to Section 12(g) of the Act:

N/A

(Title of Class)

Item 1.

Description of Registrant’s Securities to be Registered.

The securities to be registered hereby are the units, Class A ordinary shares, par value $0.0001 per share, and warrants to purchase Class A ordinary shares of HCM III Acquisition Corp (the “Registrant”). The description of the units, Class A ordinary shares and warrants contained in the section entitled “Description of Securities” in the prospectus included in the Company’s Registration Statement on Form S-1 (File No. 333- 287841) initially filed with the U.S. Securities and Exchange Commission on June 6, 2025, as amended from time to time (the “Registration Statement”), to which this Form 8-A relates, is incorporated herein by reference. Any form of prospectus or prospectus supplement to the Registration Statement that includes such descriptions and that is subsequently filed is also incorporated by reference herein.

Item 2.

Exhibits.

Pursuant to the Instructions as to Exhibits with respect to Form 8-A, no exhibits are required to be filed, because no other securities of the Registrant are registered on The Nasdaq Stock Market LLC and the securities registered hereby are not being registered pursuant to Section 12(g) of the Securities Exchange Act of 1934, as amended.

SIGNATURE

Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereto duly authorized.

	HCM III ACQUISITION CORP

	By:	/s/ Steven Bischoff
		Steven Bischoff
		President and Chief Financial Officer

Dated: July 31, 2025

SEC Form 8-A12B filed by HCM Acquisition Corp