-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, KPm1gJgbyaOV0BbRa1oVAVKNrkUpIlFdstLl+8xlkBygJ4fmLnwnkd7/dOg48QmO 0fbOlGwhx+191ohrwfHE7A== 0000928749-08-000003.txt : 20080710 0000928749-08-000003.hdr.sgml : 20080710 20080710121617 ACCESSION NUMBER: 0000928749-08-000003 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20080710 DATE AS OF CHANGE: 20080710 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: ATMI INC CENTRAL INDEX KEY: 0001041577 STANDARD INDUSTRIAL CLASSIFICATION: INDUSTRIAL INORGANIC CHEMICALS [2810] IRS NUMBER: 061481060 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-51731 FILM NUMBER: 08946536 BUSINESS ADDRESS: STREET 1: 7 COMMERCE DRIVE CITY: DANBURY STATE: CT ZIP: 06810-4169 BUSINESS PHONE: 2037941100 MAIL ADDRESS: STREET 1: 7 COMMERCE DRVIE CITY: DANBURY STATE: CT ZIP: 06810-4169 FORMER COMPANY: FORMER CONFORMED NAME: ATMI HOLDINGS INC DATE OF NAME CHANGE: 19970625 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: KALMAR INVESTMENTS INC /DE/ CENTRAL INDEX KEY: 0000928749 IRS NUMBER: 510261641 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 3701 KENNETT PIKE STREET 2: STE 500 CITY: GREENVILLE STATE: DE ZIP: 19807 BUSINESS PHONE: 3026587575 MAIL ADDRESS: STREET 1: 3701 KENNETT PIKE CITY: GREENVILLE STATE: DE ZIP: 19807 SC 13G 1 atmi.txt United States Securities and Exchange Commission Washington, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. __________) Name of Issuer: ATMI, Inc. Title of Class of Securities: Common Stock CUSIP Number: 00207R101 (A fee is not required only if the filing person; (1) has a previous statement on file reporting beneficial ownership of more than five percent of the class of securities described in Item 1; and (2) has filed no amendment subsequent thereto reporting beneficial ownership of five percent or less or such class.) (See Rule 13d-7. 1. Name of Reporting Person Kalmar Investments Inc. 2. Check the appropriate line if a member of a group. (a) __________ (b)__________ 3. SEC USE ONLY 4.Citizenship or place of Organization: Barley Mill House 3701 Kennett Pike Wilmington, DE 19807 Number of 5. Sole Voting Power 1,607,228 Shares Beneficially 6. Shared Voting Power -0- Owned by each Reporting person 7. Sole Dispositive Power 1,607,228 with 8. Shared Dispositive Power -0- 9. Aggregate amount beneficially owned by each reporting person: -0- 10. Check line ___________if the aggregate amount in Row (9) excludes certain shares* 11. Percent of Class represented by amount in Row 9: 5.01 12. Type of Reporting Person: IA Item 1. (a)Issuer: ATMI, Inc (b) Address of Issuer's Principal Executive Offices: 7 Commerce Dr Danbury, CT 06810 Item 2. (a) Name of Person Filing: Kalmar Investments Inc. (b) Address of Principal Business Office: 3701 Kennett Pike, Wilmington, DE 19807 (c) Citizenship: USA (d) Title of Class of Securities:Common Stock (e) CUSIP Number: 00207R101 Item 3. If this statement if filed pursuant to Rule 13d-1(b), or 13d-2(b), check whether the person filing is: (a)___ Broker or Dealer registered under Section 15 of the Act (b)___ Bank as defined in section 3(a)(6)of the Act (c)___ Insurance Company as defined in section 3(a)(19) of the Act (d)___ Investment Company registered under section 8 of the Investment Company Act (e)__X Investment Adviser registered under section 203 of the Investment Advisers Act of 1940 (f)___ Employee Benefit Plan, Pension Fund which is subject to the provisions of the Employee Retirement Income Security Act of 1974 or Endowment Fund (g)___Parent Holding company,in accordance with 240.13d-1(b)(ii)(G)Note: See Item 7 (h)Group, in accordance with 240.13d-1(b)(1)(ii)(H) Item 4. Ownership (a) Amount Beneficially Owned: 1,607,228 (b) Percent of Class: 5.01 (c) number of shares as to which such person has: (i) sole power to vote or to direct the vote: 1,607,228 (ii) shared power to vote or to direct the vote: (iii)sole power to dispose or to direct the disposition of: 1,607,228 (iv) shared power to dispose or to direct the disposition of: Item 10. Certification The following certification shall be included if the statement if filed pursuant to Rule 13d-1(b): I certify below that, to be best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purposes or effect. After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. -----END PRIVACY-ENHANCED MESSAGE-----