Form 8-K

8-K — RTB Digital, Inc.

Accession: 0001185185-26-004543

Filed: 2026-10-02

Period: 2026-09-30

CIK: 0001419275

SIC: 8742 (SERVICES-MANAGEMENT CONSULTING SERVICES)

Item: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Item: Financial Statements and Exhibits

Documents

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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): September 30, 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.)

4300 University Way, Suite C

Seattle, WA 98105

(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 ☐

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 5.02 Departure of Directors or Certain Officers; Election of

Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

Appointment of Mary Elizabeth Truss as Director

On September 30, 2026, the Board of Directors

of RTB Digital, Inc., a Nevada corporation (the “Company”) appointed Mary Elizabeth Truss as a director of the Company. Ms.

Truss will serve as a director until her successor is duly elected and qualified.

Ms. Truss served as the 56th Prime Minister of the United Kingdom.

She was the Conservative MP for South West Norfolk between 2010 and 2024, during which period she held ministerial office for more than

ten years between 2012 and 2022 and, after an initial spell as a junior education minister, sat at the Cabinet table in six different

roles, prior to becoming Prime Minister: Secretary of State for the Environment, Food and Rural Affairs; Lord Chancellor and Secretary

of State for Justice; Chief Secretary to the Treasury; Secretary of State for International Trade; and Foreign Secretary – as well

as Minister for Women and Equalities.

As Prime Minister she sought to implement her Plan for Growth, including

a raft of tax cuts to kick-start economic growth and reforms to boost productivity. Regrettably these reforms were sabotaged as a result

of the actions of the Bank of England and opposition from Conservatives In Name Only in the House of Commons and she reached the conclusion

that she could not deliver the mandate on which she had been elected and stepped down.

Her Sunday Times best-seller Ten Years to Save the West

was published by Skyhorse in April 2024 and in December 2025 launched The Liz Truss Show, available on YouTube and all major podcast

platforms.

The Company believes Ms. Truss’s international business, government,

and media experience, together with her relationships in the United Kingdom media market, will provide the Board and the Company with

valuable perspective as the Company develops and operates its enterprise media operating system.

In connection with her appointment, Ms. Truss will enter into the Company’s

standard form of Board of Directors Agreement. Under the agreement, Ms. Truss will be eligible to receive an annual equity award with

a grant-date fair value of $150,000, to be granted in the form of restricted stock units (“RSUs”). Because Ms. Truss was appointed

other than at an annual meeting of shareholders, she will receive a prorated RSU award for the portion of the 2026 annual service period

remaining following the full execution of her Board of Directors Agreement. The number of RSUs will be determined based on the average

closing price of the Company’s common stock over the five consecutive trading days ending on the trading day immediately preceding

the applicable grant date. The annual and prorated awards vest in full on December 31 of the applicable calendar year, subject to Ms.

Truss’s continued service through the vesting date. Ms. Truss will also be eligible for reimbursement of reasonable, approved business

expenses and may receive such additional cash compensation as may be authorized by the Compensation Committee from time to time.

There is no arrangement or understanding between

Ms. Truss and any other person pursuant to which she was selected to serve as a director. Ms. Truss does not have any family relationships

with any of the Company’s executive officers or directors, and does not have any direct or indirect material interest in any transaction

or proposed transaction required to be reported under Item 404(a) of Regulation S-K.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.

Name of Exhibit

104*

Cover Page Interactive Data File (embedded within the inline XBRL document).

Filed or furnished herewith

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/ James Heckman

Name:

James Heckman

Title:

Chief Executive Officer

Dated: October 2, 2026

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Entity Tax Identification Number

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Entity Incorporation, State or Country Code

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