UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

Amendment No. 1

Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

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

RTB Digital, Inc.

(Exact name of registrant as specified in its charter)

Nevada		001-34294		22-3962936
(State or other jurisdiction of incorporation)		(Commission File Number		(I.R.S. Employer Identification No.)

3111 Camino Del Rio North, Suite 400
San Diego, CA 92108

(Address of principal executive offices and zip code)

Registrant’s telephone number, including area code: (855) 201-1613

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

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, par value $0.001 per share		RTB		The Nasdaq Stock Market LLC (Nasdaq Capital Market)

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. ☐

EXPLANATORY NOTE

This filing is being made to file a copy of Exhibit 3.2, the Certificate of Merger between RYVYL Merger Sub Inc. and RTB Digital, Inc., indicated in the original filing of this Current Report on Form 8-K, filed on May 13, 2025, as being filed by amendment.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.		Name of Exhibit
3.1**		Certificate of Amendment – Change of name to RTB Digital, Inc.
3.2*		Certificate of Merger between RYVYL Merger Sub Inc. and RTB Digital, Inc., effective May 12, 2026
99.1**		Press Release, dated May 12, 2026
104*		Cover Page Interactive Data File (embedded within the inline XBRL document).

Filed or furnished herewith

Previously filed

SIGNATURES

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

RTB Digital, Inc.

By:	/s/ George Oliva
	Name:	George Oliva
	Title:	Chief Financial Officer

Dated: May 13, 2026