Release
                 ATMI REPORTS THIRD QUARTER FINANCIAL RESULTS
       DANBURY, CT - October 17, 2001 - ATMI, Inc. (Nasdaq: ATMI) today reported results for its third quarter and the nine months ending September 30th. ATMI is an industry-leading provider of specialty materials and services to the worldwide semiconductor industry.
       Driven by the steep decline in semiconductor chip production, revenues for the quarter were $39.7 million, a 28% sequential decline from the second quarter's revenues of $55.0 million, and a 50% decline compared to revenues of $78.9 million in the third quarter a year ago. Excluding special items recognized in the quarter, net loss for the third quarter was $6.1 million or $.21 per share, compared to net income of $11.2 million, or $.36 per share in the third quarter of 2000. As previously announced, the company recognized $4.7 million in special items in the third quarter, including inventory write-downs, severance charges, and increased receivables reserves, offset by net investment gains. Including these special items, ATMI lost $9.0 million in the quarter, or $.30 per share.
       For the nine months, revenues were $172 million, approximately 20% below revenues of $213 million for the same period last year. Excluding special items, earnings were $1.7 million, or $.06 per share. Including special items, ATMI incurred a net loss of $5.1 million, or $.17 per share.
       Gene Banucci, ATMI CEO, said, "The industry is in the sharpest and most pervasive downturn I have ever seen. We reduced annualized expenses by $25 million earlier in the year, primarily through plant closings and staff reductions. It wasn't enough. Although we are making further infrastructure reductions this quarter, we continue to achieve a number of technical and market successes with new products targeting advanced interconnect processes."
       Dan Sharkey, CFO, said, "During the quarter, both our Materials and Technologies businesses suffered from the downturn. Our Materials business was down 23% sequentially to $21.8 million during the third quarter from $28.3 million in the second quarter. Even our proprietary SDS products - which we believe are continuing to gain market share - were down 29% sequentially. Our Technologies product lines were affected even more dramatically, with revenues down 33% sequentially to $17.9 million in the third quarter from $26.7 million in the second quarter. Our equipment product lines alone were down 41% sequentially. Fortunately, we have a strong balance sheet with minimal debt - and we are able to use our solid cash position to fund significant R&D investments, strengthening our market position during this downturn." |