Item 2.02. Results of Operations and Financial Condition.

On February 6, 2013, ATMI, Inc. (the "Company") issued a press release announcing its financial results for the fourth quarter of 2012 and the full year. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

On February 6, 2013 at approximately 11:00 a.m. Eastern time, the Company will hold a conference call to discuss its financial results for the fourth quarter of 2012 and the full year. The slide presentation being distributed by the Company in connection with the conference call is attached hereto as Exhibit 99.2.

The information contained in this Item 2.02 of this Current Report on Form 8-K, including Exhibits 99.1 and 99.2 attached hereto, is furnished and shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section, and shall not be deemed to be incorporated by reference into the filings of the registrant under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits -

99.1. Press release dated February 6, 2013 issued by ATMI, Inc.

99.2 Presentation by ATMI, Inc. on February 6, 2013.

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