EXHIBIT 99.4
JOINT FILING AGREEMENT
The undersigned hereby agree that a single Schedule 13D (or any amendment thereto) relating to the Common Stock of Histogenics Corporation shall be filed on behalf of each of the undersigned and that this Agreement shall be filed as an exhibit to such Schedule 13D.
Date: December 12, 2014 |
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| SPLIT ROCK PARTNERS II, LP, a Delaware limited partnership | |
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| By: SPLIT ROCK PARTNERS II MANAGEMENT, LLC, | |
| a Delaware limited liability company | |
| Its: General Partner | |
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| By: | /s/ Steven L.P. Schwen |
| Name: | Steven L.P. Schwen |
| Title: | Chief Financial Officer |
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| SPLIT ROCK PARTNERS II MANAGEMENT, LLC, | |
| a Delaware limited liability company | |
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| By: | /s/ Steven L.P. Schwen |
| Name: | Steven L.P. Schwen |
| Title: | Chief Financial Officer |