JOINDER TO JOINT FILING AGREEMENT
EXHIBIT 99.1
JOINDER TO JOINT FILING AGREEMENT
The undersigned hereby agrees to join as a party to that certain Joint Filing Agreement, dated
as of August 19, 2011, among Castlerigg Master Investments Ltd., Xxxxxxx Asset Management Corp.,
Castlerigg International Limited, Castlerigg International Holdings Limited, Castlerigg Offshore
Holdings, Ltd. and Xxxxxx Xxxxxxx (the “Reporting Persons”). The above referenced Joint Filing
Agreement was filed with the Securities and Exchange Commission on August 19, 2011 as Exhibit A to
the Schedule 13G filed by the Reporting Persons.
IN
WITNESS WHEREOF, the undersigned has executed this Agreement as of
the 11th day of February,
2011.
| CASTERLIGG GS HOLDINGS, LTD. |
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| By: | Xxxxxxx Asset Management Corp. | |||
| as Investment Manager |
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| By: | /s/ Xxxxxx X. Xxxxxxx | |||
| Name: | Xxxxxx X. Xxxxxxx | |||
| Title: | Chief Executive Officer | |||
