SCHEDULE 13G/A 0001193125-24-258530 1000264 XXXXXXXX LIVE 5 Common Stock 12/31/2024 0001392972 PROS Holdings, Inc. 74346Y103 3200 Kirby Drive Suite 600 Houston TX 77098 Rule 13d-1(b) Alger Associates, Inc. 13-3017981 NY 1934943 0 2207784 0 2207784 N 4.7 HC PROS Holdings, Inc. 3200 Kirby Drive, Suite 600, Houston, TX 77098 Alger Associates, Inc. 100 Pearl Street, 27th Floor, New York, NY 10004 New York N HC 2,207,784 4.7 1,934,943 0 2,207,784 0 N Y N The securities reported herein are beneficially owned by one or more open-end investment companies or other managed accounts that are investment management clients of Fred Alger Management, LLC ("FAM"), a registered investment adviser, and Weatherbie Capital, LLC ("WC"), a registered investment adviser. Each of FAM and WC is a 100% owned subsidiary of Alger Group Holdings, LLC ("AGH"), a holding company. AGH is a 100% owned subsidiary of Alger Associates, Inc., a holding company. N See Exhibit A. Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and 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. Alger Associates, Inc. 13-3017981 /s/ Hal Liebes 02/14/2025