AGREEMENT
Exhibit 99.1
Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that only one statement containing the information required by Schedule 13D need be filed with respect to the ownership by each of the undersigned of the shares of Common Stock of Tengion, Inc.
Dated: March 14, 2011
| HealthCap IV, L.P. | ||||||||||||
| By its Sole General Partner, HealthCap IV GP SA, L.L.C. | ||||||||||||
| By: | /s/ Xxxxx Xxxxxxxxxx |
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| Print Name: | Xxxxx Xxxxxxxxxx |
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| Title: | President |
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| HealthCap IV, K.B. | ||||||||||||
| By its Sole General Partner, HealthCap IV GP AB, L.L.C. | ||||||||||||
| By: | /s/ Per Samuelsson |
By: | /s/ Björn Odlander | |||||||||
| Print Name: | Per Samuelsson |
Print Name: | Björn Odlander | |||||||||
| Title: | Partner |
Title: | Partner | |||||||||
| HealthCap IV BIS, L.P. | ||||||||||||
| By its Sole General Partner, HealthCap IV GP SA, L.L.C. | ||||||||||||
| By: | /s/ Xxxxx Xxxxxxxxxx |
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| Print Name: | Xxxxx Xxxxxxxxxx |
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| Title: | President |
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| XXXX Xxxx XX | ||||||||||||
| Xx Xxxxxxxx, Xxxxxxxxxx & Xx XX, L.L.C., as a member and on behalf of all members, if any, of the OFCO Club IV | ||||||||||||
| By: | /s/ Per Samuelsson |
By: | /s/ Björn Odlander | |||||||||
| Print Name: | Per Samuelsson |
Print Name: | Björn Odlander | |||||||||
| Print Title: | Partner |
Title: | Partner | |||||||||
