X0202 SCHEDULE 13G/A 0002058019 XXXXXXXX LIVE 1 Common Stock 02/02/2026 0000926282 ADTRAN Holdings, Inc. 00486H105 901 EXPLORER BLVD HUNTSVILLE AL 35806 Rule 13d-1(c) EGORA Ventures AG 2M 4005806.00 0.00 4005806.00 0.00 4005806.00 N 4.9745 CO ADTRAN Holdings, Inc. 901 Explorer Boulevard, Huntsville, AL 35806 EGORA Ventures AG C/O Clark Hill PLC 555 South Flower Street, 24th Floor Los Angeles, CA 90071 Germany Y 4,005,806 4.9745% 4,005,806 4,005,806 4,005,806 4,005,806 Y N 4.9745% Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. EGORA Ventures AG /s/ Nikolaus Zwick 03/18/2026