EXHIBIT 1

JOINT FILING AGREEMENT

THIS JOINT FILING AGREEMENT is entered into as of June 17, 2013, by and among the parties hereto.  The undersigned hereby agree that the Statement on Schedule 13D with respect to the common stock, $0.001 par value per share (the “Common Stock”), of Textura Corporation, a Delaware corporation, and any amendment thereafter signed by each of the undersigned shall be (unless otherwise determined by the undersigned) filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.

 Dated:  June 17, 2013                 Dated:  June 17, 2013                   Dated:  June 17, 2013                   Dated:  June 17, 2013                     Dated:  June 17, 2013 DAVID PATTERSON   /s/ David Patterson                                                                                  NORTHWATER CAPITAL INC.   By: /s/ Jonathan Piurko                                                                          Name:  Jonathan Piurko       Title:    Managing Director     NORTHWATER CAPITAL MANAGEMENT INC.   By: /s/ Jonathan Piurko                                                                          Name:  Jonathan Piurko       Title:    Managing Director   NORTHWATER INTELLECTUAL PROPERTY FUND L.P. 1 BY: NORTHWATER IP 1 GP INC., ITS GENERAL PARTNER   By: /s/ Jonathan Piurko                                                                          Name:  Jonathan Piurko       Title:    Managing Director   NORTHWATER INTELLECTUAL PROPERTY FUND L.P. 3A BY: NORTHWATER IP 3 GP INC., ITS GENERAL PARTNER   By: /s/ Jonathan Piurko                                                                          Name:  Jonathan Piurko       Title:    Managing Director