UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): March 12, 2026

SUMA Acquisition Corporation

(Exact name of registrant as specified in its charter)

6543 Las Vegas Blvd S

Las Vegas, NV 89119

(Address of principal executive offices, including zip code)

Registrant’s telephone number, including area code: (647) 622-9173

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

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

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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 13(a) of the Exchange Act. ☐

Item 8.01. Other Events.

On March 12, 2026, SUMA Acquisition Corporation (the “Company”) consummated its initial public offering (“IPO”) of 17,250,000 units (the “Units”) issued pursuant to the full exercise by the underwriters of their over-allotment option. Each Unit consists of one Class A ordinary share of the Company, par value $0.0001 per share (the “Class A Ordinary Shares”), and one right to receive one-fifth (1/5) of one Class A Ordinary Share upon the consummation of the Company’s initial business combination (each, a “Share Right”). The Units were sold at a price of $10.00 per Unit, generating gross proceeds to the Company of $172,500,000.

Simultaneously with the closing of the IPO, the Company completed the private sale (the “Private Placement”) of an aggregate of 446,250 Units (the “Private Placement Units”). 141,922 Private Placement Units were sold to SUMA Sponsor LP, the Company’s US sponsor, 174,953 Private Placement Units were sold to SUMA Canada II Sponsor LP, one of the Company’s Canadian Sponsors, and 129,375 Private Placement Units were sold to Seaport Global Securities LLC, in each case at a purchase price of $10.00 per Private Placement Unit, generating gross proceeds to the Company of $4,462,500.

A total of $172,500,000, comprised of $169,882,500 of the net proceeds from the IPO (which amount includes up to $6,900,000 of the underwriter’s deferred discount) and $2,617,500 of the proceeds of the sale of the Private Placement Units, was placed in a U.S.-based trust account maintained by Continental Stock Transfer & Trust Company, acting as trustee.

An audited balance sheet as of March 20, 2026, reflecting the receipt of the proceeds from the IPO and the Private Placement has been issued by the Company and is included as Exhibit 99.1 to this Current Report on Form 8-K.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.