X0508 4 2025-12-04 0 0001880613 Direct Digital Holdings, Inc. DRCT 0001896664 Walker Mark D C/O DIRECT DIGITAL HOLDINGS, INC. 1177 WEST LOOP SOUT, SUITE 1300 HOUSTON TX 77027 1 1 1 0 Chairman and CEO 0 Class A Common Stock, par value $0.001 per share 2025-12-04 4 C 0 300000 A 300000 I By AJN Energy & Transport Ventures, LLC Class A Common Stock, par value $0.001 per share 0 D Class A Common Units of Direct Digital Holdings LLC 2025-12-04 4 C 0 300000 0 D Class A Common Stock, par value $0.001 per share 300000 4681500 I By Direct Digital Management, LLC Pursuant to the Second Amended and Restated Limited Liability Company Agreement of Direct Digital Holdings, LLC, dated as of February 15, 2022, Class A Common Units (as defined therein) held by the Reporting Person (indirectly through the Reporting Person's ownership interest in Direct Digital Management, LLC) are exchangeable for shares of Class A Common Stock on a one-for-one basis, subject to certain exceptions, conditions and adjustments. The Class A Common Units have no expiration date. At the time of any such exchange, an equal number of shares of Class B Common Stock of the Issuer held by the Reporting Person, which have no economic value and entitle holders thereof to one vote per share on all matters on which stockholders of the Issuer are entitled to vote generally, are cancelled. /s/ Mark Walker 2025-12-22