SCHEDULE 13G/A 0001085146-24-000971 0001345929 XXXXXXXX LIVE 1 Common stock $0.001 par value per share 03/31/2025 0001392972 PROS Holdings, Inc. 74346Y103 3200 KIRBY DR. SUITE 600 HOUSTON TX 77098 Rule 13d-1(b) BROWN ADVISORY INC MD 1825048 0 0 2214782 2214782 N 4.7 HC BROWN INVESTMENT ADVISORY & TRUST CO MD 12810 0 0 12810 12810 N 0 BK BROWN ADVISORY LLC MD 1811572 0 0 2200576 2200576 N 4.6 IA SIGNATURE FINANCIAL MANAGEMENT, INC. VA 666 0 0 1396 1396 N 0 IA PROS Holdings, Inc. 3200 KIRBY DR. SUITE 600 HOUSTON, TEXAS 77098 BROWN ADVISORY INC BROWN INVESTMENT ADVISORY & TRUST CO BROWN ADVISORY LLC SIGNATURE FINANCIAL MANAGEMENT, INC. 901 SOUTH BOND STREET SUITE #400 Baltimore, Maryland 21231 BROWN ADVISORY INC - MARYLAND BROWN INVESTMENT ADVISORY & TRUST CO - MARYLAND BROWN ADVISORY LLC - MARYLAND SIGNATURE FINANCIAL MANAGEMENT, INC. - VIRGINIA N BK IA HC 2,214,782 4.7 BROWN ADVISORY INC - 1,825,048 BROWN INVESTMENT ADVISORY & TRUST CO - 12,810 BROWN ADVISORY LLC - 1,811,572 SIGNATURE FINANCIAL MANAGEMENT, INC. - 666 BROWN ADVISORY INC - 0 BROWN INVESTMENT ADVISORY & TRUST CO - 0 BROWN ADVISORY LLC - 0 SIGNATURE FINANCIAL MANAGEMENT, INC. - 0 BROWN ADVISORY INC - 0 BROWN INVESTMENT ADVISORY & TRUST CO - 0 BROWN ADVISORY LLC - 0 SIGNATURE FINANCIAL MANAGEMENT, INC. - 0 BROWN ADVISORY INC - 2,214,782 BROWN INVESTMENT ADVISORY & TRUST CO - 12,810 BROWN ADVISORY LLC - 2,200,576 SIGNATURE FINANCIAL MANAGEMENT, INC. - 1,396 N Y N The total securities being reported are beneficially owned by investment companies and other managed accounts of direct/indirect subsidiaries of BROWN ADVISORY INC (listed above). These subsidiaries may be deemed to be beneficial owners of the reported securities because applicable investment advisory contracts provide voting and/or investment power over securities. N BROWN ADVISORY INC is a parent holding company filing this schedule on behalf of the following subsidiaries pursuant to Rule 13d-1(b)(1)(ii)(G) under the Securities Exchange Act of 1934: BROWN INVESTMENT ADVISORY & TRUST CO - BK (Bank) BROWN ADVISORY LLC - IA (Investment Adviser) SIGNATURE FINANCIAL MANAGEMENT, INC. - IA (Investment Adviser) 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. BROWN ADVISORY INC Brett D. Rogers 04/23/2025 BROWN INVESTMENT ADVISORY & TRUST CO Brett D. Rogers 04/23/2025 BROWN ADVISORY LLC Brett D. Rogers 04/23/2025 SIGNATURE FINANCIAL MANAGEMENT, INC. Brett D. Rogers 04/23/2025