Climb Global Solutions, Inc.

This proxy statement is furnished in connection with the solicitation by the Board of Directors (the “Board”) of Climb Global Solutions, Inc., a Delaware corporation (the “Company”), of proxies to be voted at the Annual Meeting of Stockholders (the “Meeting”) to be held on June 3, 2025 at 10:00 a.m., Eastern Daylight Time, and at any postponements or adjournments thereof, for the purposes set forth in the accompanying Notice of Annual Meeting of Stockholders. You will be able to attend the Meeting, vote your shares electronically and submit your questions during the meeting via live audio webcast by visitingwww.virtualshareholdermeeting.com/CLMB2025. In order to participate in the Meeting, you must enter the 16-digit voting control number found on your proxy card, voting instruction form or notice that you received previously. If you do not have your control number, you may elect to participate in the Meeting as a “Guest”, but you will not have access to vote your shares or ask questions during the virtual Meeting.

The approximate date on which this proxy statement and the accompanying proxy card is first being made available to the Company’s stockholders is April 29, 2025.