# EDGAR Filing Document

**Accession Number:** 0002123991
**File Stem:** 0001185185-26-002683
**Filing Date:** 2026-6
**Character Count:** 8528
**Document Hash:** 37a62c41fd612fb74ee278aac9697040
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001185185-26-002683.hdr.sgml**: 20260626

**ACCESSION NUMBER**: 0001185185-26-002683

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260626

**DATE AS OF CHANGE**: 20260626

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** RTB Digital, Inc.
- **CENTRAL INDEX KEY:** 0001419275
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-MANAGEMENT CONSULTING SERVICES [8742]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** NV
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-91720
- **FILM NUMBER:** 261129288

**BUSINESS ADDRESS:**
- **STREET 1:** 3131 CAMINO DEL RIO NORTH, SUITE 1400
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92108
- **BUSINESS PHONE:** 619-631-8261

**MAIL ADDRESS:**
- **STREET 1:** 3131 CAMINO DEL RIO NORTH, SUITE 1400
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92108

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** RYVYL Inc.
- **DATE OF NAME CHANGE:** 20221013

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GreenBox POS
- **DATE OF NAME CHANGE:** 20190222

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GreenBox POS, LLC
- **DATE OF NAME CHANGE:** 20180613
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Comer James Lamar Walton
- **CENTRAL INDEX KEY:** 0002123991

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D

**MAIL ADDRESS:**
- **STREET 1:** 3131 CAMINO DEL RIO N
- **STREET 2:** SUITE 1400
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92108

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**RTB Digital, Inc**

*(Name of Issuer)*

**Common Stock, par value $0.001 per share**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**James Comer**<br>c/o RTB Digital, Inc.<br>3111 Camino Del Rio North, Suite 400<br>San Diego CA 92108<br>855-201-1613

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**05/12/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Comer James Lamar Walton** | Name of reporting person<br>**Comer James Lamar Walton** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**SC** | Source of funds (See Instructions)<br>**SC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**4504276.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**4504276.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**4504276.00** | Aggregate amount beneficially owned by each reporting person<br>**4504276.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**31.7%** | Percent of class represented by amount in Row (11)<br>**31.7%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock, par value $0.001 per share

**(b) Name of Issuer:**
RTB Digital, Inc

**(c) Address of Issuer's Principal Executive Offices:**
c/o RTB Digital, Inc., 3111 Camino Del Rio North, Suite 400, San Diego, CA, 92108

**Item 4. Purpose of Transaction**

The information set forth or incorporated by reference in Items 3 and 6 of this Statement is incorporated by reference into this Item 4.
The Reporting Person intends to continuously review his investment in the Issuer and may in the future determine (1) to acquire additional securities of the Issuer, through open market purchases, private agreements or otherwise, (2) to dispose of all or a portion of the securities of the Issuer owned by him or (3) to take any other available course of action. Notwithstanding anything contained herein, the Reporting Person specifically reserves the right to change his intention with respect to any or all of such matters. In reaching any decision as to his course of action (as well as to the specific elements thereof), the Reporting Person currently expects that he would take into consideration a variety of factors, including, but not limited to, the following: the Issuer's business and prospects; other developments concerning the Issuer and its business generally; other business opportunities available to the Reporting Person; developments with respect to the business of the Reporting Person; changes in law and government regulations; general economic conditions; and money and stock market conditions, including the market price of the securities of the Issuer.

The Reporting Person is Chairman and a member of the Board of Directors of the Issuer and, accordingly, in such capacity, may have influence over the corporate activities of the Issuer, including activities which may relate to items described in subparagraphs (a) through (j) of Item 4 of Schedule 13D. Subject to the Issuer's Insider Trading Policy, the Reporting Person may from time to time buy or sell securities of the Issuer as appropriate for his personal circumstances.

**Item 5. Interest in Securities of the Issuer**

**(a)**
The information set forth in rows 7 through 13 of the cover page to this Schedule 13D is incorporated by reference.

The Reporting Person beneficially owns an aggregate of 4,504,276 shares of Common Stock, which consists of (i) 53,048 shares of Common Stock held directly by Media Innovation Fund I LLC, of which the Reporting Person is controlling member, (ii) 3,727,937 shares of Common Stock held directly by Comer Trading, LLC, of which the Reporting Person is controlling member, (iii) 698,978 shares of Common Stock issuable to Comer Trading, LLC upon exercise of warrants exercisable within 60 days of this Statement and (iv) 24,313 shares of Common Stock issuable to the Comer Trading, LLC upon exercise of stock options exercisable within 60 days of this Statement. The foregoing excludes 48,628 shares of Common Stock underlying equity awards that are currently unvested and are not substantially certain to vest within 60 days of this statement.

**(b)**
The 4,504,276 shares of Common Stock beneficially owned by the Reporting Person represents approximately 31.7% of the outstanding shares of Common Stock. The percent of class was calculated based on (i) 13,473,757 shares of Common Stock outstanding, as reported by the Issuer to the Reporting Person, plus (ii) 723,291 shares of Common Stock underlying stock options and/or warrants held by the Reporting Person that are exercisable within 60 days, which are deemed outstanding pursuant to SEC Rule 13d-3(d)(1)(i).

**(c)**
Except as described in Item 3, the Reporting Person has not effected any transaction in the Common Stock during the past 60 days.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

The information contained in Item 3 of the Schedule 13D is incorporated by reference into this Item 6.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Comer James Lamar Walton

**Signature:** /s/ Walton Comer

**Name/Title:** Walton Comer

**Date:** 06/26/2026