JOINT FILING AGREEMENT
Exhibit 99.1
In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13G dated January 2, 2013 (including amendments thereto) with respect to the Common Stock of ATMI, Inc. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.
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Dated: January 2, 2013
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Raging Capital Master Fund, Ltd.
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By:
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Investment Manager
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By:
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/s/ Xxxxxxxxx X. Xxxxx
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Name:
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Xxxxxxxxx X. Xxxxx
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Title:
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Chief Financial Officer
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By:
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/s/ Xxxxxxxxx X. Xxxxx
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Name:
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Xxxxxxxxx X. Xxxxx
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Title:
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Chief Financial Officer
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/s/ Xxxxxxxxx X. Xxxxx
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Xxxxxxxxx X. Xxxxx as attorney-in-fact for Xxxxxxx X. Xxxxxx
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