0001047469-07-004351 S-1/A 12 20070515 20070515 PROS Holdings, Inc. 0001392972 7371 760168604 DE 1231 S-1/A 33 333-141884 07854987 3100 MAIN STREET SUITE 900 HOUSTON TX 77002 713-335-5151 3100 MAIN STREET SUITE 900 HOUSTON TX 77002 S-1/A 1 a2177953zs-1a.htm S-1/A EX-10.11.1 2 a2177953zex-10_111.htm EXHIBIT 10.11.1 EX-10.11.2 3 a2177953zex-10_112.htm EXHIBIT 10.11.2 EX-10.12.2 4 a2177953zex-10_122.htm EXHIBIT 10.12.2 EX-10.12.3 5 a2177953zex-10_123.htm EXHIBIT 10.12.3 EX-10.17 6 a2177953zex-10_17.htm EXHIBIT 10.17 EX-10.18 7 a2177953zex-10_18.htm EXHIBIT 10.18 EX-23.1 8 a2177953zex-23_1.htm EXHIBIT 23.1 GRAPHIC 9 g950845.jpg G950845.JPG GRAPHIC 10 g971463.jpg G971463.JPG GRAPHIC 11 g244640.jpg G244640.JPG GRAPHIC 12 g734082.jpg G734082.JPG