1 POWER OF ATTORNEY KNOW ALL BY THESE PRESENTS: That the undersigned has made, constituted and appointed, and by this instrument does make, constitute and appoint Brandy L. Treadway, his or her true and lawful attorney and agent (each, an “attorney in fact”), for him or her and in his or her name, place and stead, to: (1) execute for and on behalf of the undersigned, in the undersigned’s capacity as an officer and/or director of, beneficial owner of and/or trustee of a trust which beneficially owns stock of RumbleOn, Inc. (the “Company”), (i) all reports on Forms 3, 4 and 5 and any other forms required to be filed in accordance with Section 16(a) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the rules promulgated thereunder, including all amendments thereto (each, a “Section 16 Form”), and (ii) all forms and schedules required to be filed in accordance with Section 13(d) or (g) of the Exchange Act and the rules promulgated thereunder, including all amendments thereto (each, a “Section 13 Schedule”, and, together with Section 16 Forms, the “Forms and Schedules”); (2) do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Forms and Schedules, complete and execute any amendment or amendments thereto, and timely file such Forms and Schedules with the Securities and Exchange Commission and any stock exchange or similar authority, together with any and all other instruments and documents each such attorney-in-fact shall deem necessary, appropriate or advisable in connection with the Forms and Schedules (but subject to any limitations on the use of powers of attorney set forth in the Exchange Act and the rules and regulations thereunder); and (3) take any other action of any type whatsoever in connection with the foregoing which, in the opinion of each such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by each such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as he or she may approve in his or her discretion. The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that each such attorney-in-fact, or his or her substitute or substitutes, shall lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein granted. The undersigned acknowledges that each such attorney-in-fact is serving in such capacity at the request of the undersigned, and is not assuming, nor is the Company

2 assuming, any of the undersigned’s responsibilities to comply with Section 13 or Section 16 of the Exchange Act. The Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file any Forms and Schedules with respect to the undersigned’s holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to each attorney-in-fact. IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 11th day of March 2024. Rebecca Polak Rebecca Polak (Mar 11, 2024 15:46 EDT) Rebecca Polak

POLAK REBECCA C. 4