As filed with the Securities and Exchange Commission on October 10, 1997 Registration No. 33-93048 ================================================================================ SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 -------------------- POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 -------------------- ATMI, INC. (Exact name of registrant as specified in its charter) Delaware 06-1481060 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) -------------------- 7 Commerce Drive, Danbury, Connecticut 06810 (Address of Principal Executive Offices) (Zip Code) -------------------- Advanced Technology Materials, Inc. 1995 Stock Plan (Full title of the plan) -------------------- Eugene G. Banucci President ATMI, Inc. 7 Commerce Drive Danbury, Connecticut 06810 (Name and address of agent for service) -------------------- (203) 794-1100 (Telephone number, including area code, of agent for service) -------------------- Copy to: Frank J. Marco, Esq. Shipman & Goodwin LLP One American Row Hartford, Connecticut 06103 (203) 251-5000 ================================================================================ INTRODUCTORY STATEMENT NOT FORMING PART OF PROSPECTUS Pursuant to Rule 414 under the Securities Act of 1933, as amended (the "Securities Act"), ATMI, Inc. (the "Company") hereby amends the Form S-8, Registration No. 33-93048, filed by Advanced Technology Materials, Inc. ("ATMI") on June 7, 1995, relating to shares of ATMI's common stock, par value $.01 per share ("ATMI Common Stock"), issued or reserved for issuance pursuant to awards granted under ATMI's 1995 Stock Plan (the "Plan"). The Plan was previously a stock plan of ATMI, formerly the sole stockholder of the Company. On October 10, 1997, pursuant to an Agreement and Plan of Merger and Exchange dated as of April 7, 1997 (the "Merger and Exchange Agreement"), Alamo Merger, Inc., a wholly-owned subsidiary of the Company, merged with and into ATMI, with ATMI as the surviving corporation (the "Merger"). As a result of the Merger, ATMI became a wholly-owned subsidiary of the Company. Upon consummation of the Merger, each outstanding share of ATMI Common Stock was converted into the right to receive one share of the Company's common stock, par value $.01 per share ("Company Common Stock"). In addition, pursuant to the Merger and Exchange Agreement, each outstanding option and warrant to purchase ATMI Common Stock, including options issued under the Plan, entitle the holder thereof to purchase, on identical terms, an equivalent number of shares of Company Common Stock. In accordance with Rule 414 under the Securities Act, the Company, as the successor registrant to ATMI, hereby expressly adopts this registration statement as its own for all purposes of the Securities Act and the Securities Exchange Act of 1934, as amended. The Plan shall continue to be known as the Advanced Technology Materials, Inc. 1995 Stock Plan. In addition, the Plan shall continue to cover directors, employees or consultants, as the case may be, of ATMI, as well as of the Company and its other subsidiaries. However, outstanding options to purchase shares of ATMI Common Stock shall entitle the holder thereof to purchase an equivalent number of shares of Company Common Stock. Furthermore, the sponsor of the Plan shall be the Company rather than ATMI. The registration fee was paid at the time of the original filing of the registration statement. -1- PART II INFORMATION REQUIRED IN THE REGISTRATION STATEMENT Item 3. Incorporation of Documents by Reference. In addition to the materials previously incorporated by reference into this registration statement by ATMI, the Company hereby incorporates by reference the Company's Current Report on Form 8-K dated October 10, 1997. All documents subsequently filed by the Company pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post- effective amendment which indicates that all securities offered hereby have been sold or which deregisters all such securities then remaining unsold, shall be deemed to be incorporated by reference in this registration statement and to be part thereof from the date of filing of such documents. Any statement contained in a document incorporated or deemed to be incorporated by reference in this registration statement shall be deemed to be modified or superseded for purposes of this registration statement to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this registration statement. Item 4. Description of Securities. This Item is not applicable. Item 5. Interests of Named Experts and Counsel. As of the date of this post-effective amendment to this registration statement, 7,714 shares of Company Common Stock are beneficially owned by lawyers employed at Shipman & Goodwin LLP, counsel to the Company. Item 6. Indemnification of Directors and Officers. The Company's Certificate of Incorporation provides that the personal liability of the directors of the Company shall be limited to the fullest extent permitted by the provisions of Section 102(b)(7) of the Delaware General Corporation Law, as amended (the "DGCL"). Section 102(b)(7) of the DGCL generally provides that no director shall be liable personally to the Company or its stockholders for monetary damages for breach of fiduciary duty as a director; however, the Certificate of Incorporation does not eliminate the liability of a director for (i) any breach of the director's duty of loyalty to the Company or its stockholders; (ii) acts or omissions not in good faith or that involve intentional misconduct or a knowing violation of law; (iii) acts or omissions in respect of certain unlawful dividend payments or stock redemptions or repurchases; or (iv) any transaction from which such director derives improper personal benefit. The effect of this provision is to eliminate the II-1 rights of the Company and its stockholders (through stockholders' derivative suits on behalf of the Company) to recover monetary damages against a director for breach of his or her fiduciary duty of care as a director (including breaches resulting from negligent or grossly negligent behavior) except in the situations described in clauses (i) through (iv) above. The limitations summarized above, however, do not affect the ability of the Company or its stockholders to seek nonmonetary remedies, such as an injunction or rescission, against a director for breach of his or her fiduciary duty. In addition, the Company's Certificate of Incorporation provides that the Company shall, to the fullest extent permitted by Section 145 of the DGCL, indemnify all persons whom it may indemnify pursuant to Section 145 of the DGCL. Section 145 of the DGCL permits a company to indemnify an officer or director who was or is a party or is threatened to be made a party to any proceeding because of his or her position, if the officer or director acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the best interests of the Company and, with respect to any criminal action or proceeding, had no reasonable cause to believe his or her conduct was unlawful. Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers, or persons controlling the Company pursuant to the foregoing provisions, the Company has been informed that in the opinion of the Securities and Exchange Commission, such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable. The Company maintains insurance for officers and directors against certain liabilities, including liabilities under the Securities Act. The effect of this insurance is to indemnify any officer or director of the Company against expenses, including, without limitation, attorneys' fees, judgments, fines and amounts paid in settlement, incurred by an officer or director upon a determination that such person acted in good faith. Item 7. Exemption from Registration Claimed. This Item is not applicable. II-2 Item 8. Exhibits. Exhibit No. Description - ---------- ----------- 4.1(a) Certificate of Incorporation of the Company (Exhibit 3.01 to the Company's Registration Statement on Form S-4, filed September 10, 1997, File No. 333-35323 (the "Form S-4 Registration Statement")). (1) 4.1(b) Certificate of Amendment to Certificate of Incorporation. (2) 4.2 Bylaws of the Company (Exhibit 3.02 to the Form S-4 Registration Statement). (1) 5.1 Opinion of Shipman & Goodwin LLP as to the legality of the securities being registered. (2) 23.1 Consent of Shipman & Goodwin LLP (included in Exhibit 5.1). (2) 23.2 Consent of Ernst & Young LLP. (2) 23.3 Consent of Price Waterhouse LLP. (2) 24.1 Power of Attorney (included in the signature page of this registration statement). (2) 99.1 ATMI's 1995 Stock Plan. (3) - -------------------------- (1) Incorporated by reference. (2) Filed herewith. (3) Previously filed. Item 9. Undertakings. (a) The undersigned registrant hereby undertakes: (1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement to include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement. (2) That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. (3) To remove from registration by means of post-effective amendment any of the securities being registered which remain unsold at the termination of the offering. II-3 (b) The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the registrant's annual report pursuant to Section 13 or Section 15(d) of the Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. (c) Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue. II-4 SIGNATURES Pursuant to requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Danbury, State of Connecticut, on October 10, 1997. ATMI, INC. By: /s/ Eugene G. Banucci ----------------------------- Eugene G. Banucci, President POWER OF ATTORNEY Know All Persons by These Presents, that each person whose signature appears below constitutes and appoints Eugene G. Banucci, Ph.D. and Daniel P. Sharkey, and each of them, his true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities to sign any and all amendments (including post-effective amendments) to this Registration Statement, and to file same, with all exhibits thereto, and other documents in connection therewith, with full power and authority to do and perform each and every act and thing requisite or necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them, of their or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. ------------------- Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated. Signature Title Date --------- ----- ---- /s/ Eugene G. Banucci President and Director (principal October 10, 1997 - ----------------------------------------------- executive officer) Eugene G. Banucci, Ph.D. /s/ Daniel P. Sharkey Treasurer and Secretary (principal October 10, 1997 - ----------------------------------------------- financial and accounting officer) Daniel P. Sharkey /s/ Mark A. Adley Director October 10, 1997 - ----------------------------------------------- Mark A. Adley /s/ John A. Armstrong Director October 10, 1997 - ----------------------------------------------- John A. Armstrong /s/ Robert S. Hillas Director October 10, 1997 - ----------------------------------------------- Robert S. Hillas /s/ Stephen H. Mahle Director October 10, 1997 - ----------------------------------------------- Stephen H. Mahle II-5 Exhibit Index ------------- Sequentially Exhibit No. Description Numbered Page - -------------- ----------- ------------- 4.1(a) Certificate of Incorporation of the Company (Exhibit 3.01 to the Company's Registration Statement on Form S-4, filed September 10, 1997, File No. 333-35323 (the "Form S-4 Registration Statement"). (1) 4.1(b) Certificate of Amendment to Certificate of Incorporation. (2) 4.2 Bylaws of the Company (Exhibit 3.02 to the Form S-4 Registration Statement). (1) 5.1 Opinion of Shipman & Goodwin LLP as to the legality of the securities being registered. (2) 23.1 Consent of Shipman & Goodwin LLP (included in Exhibit 5.1). (2) 23.2 Consent of Ernst & Young LLP. (2) 23.3 Consent of Price Waterhouse LLP. (2) 24.1 Power of Attorney (included in the signature page of this registration statement). (2) 99.1 ATMI 's 1995 Stock Plan. (3) - -------------------------- (1) Incorporated by reference. (2) Filed herewith. (3) Previously filed.