UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 15
Certification and Notice of Termination of Registration under Section 12(g) of the
Securities Exchange Act of 1934 or Suspension of Duty to File Reports Under
Sections 13 and 15(d) of the Securities Exchange Act of 1934.
Commission File Number 001-16611
Mykrolis Corporation
(Exact name of registrant as specified in its charter)
129 Concord Road, Billerica, Massachusetts 01821 Telephone # (978) 436-6500
(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)
Common Stock, $0.01 par value per share; Common Stock Purchase Rights
(Title of each class of securities covered by this Form)
None
(Title of all other classes of securities for which a duty to file reports under Section 13(a) or 15(d) remains)
Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:
| Rule 12(g)-4(a)(1)(i) | x | Rule 12h-3(b)(1)(i) | x | |||
| Rule 12(g)-4(a)(1)(ii) | ¨ | Rule 12h-3(b)(1)(ii) | ¨ | |||
| Rule 12(g)-4(a)(2)(i) | ¨ | Rule 12h-3(b)(2)(i) | ¨ | |||
| Rule 12(g)-4(a)(2)(ii) | ¨ | Rule 12h-3(b)(2)(ii) | ¨ | |||
| Rule 15d-6 | ¨ |
Approximate number of holders of record as of the certification or notice date: 1
Effective as of August 6, 2005, the Registrant was acquired by Entegris, Inc., a Delaware Corporation (“Entegris”) pursuant to a merger of Entegris with and into the Registrant (the “Merger”). In the Merger, each issued and outstanding share of the Registrant’s common stock was converted into the right to receive 1.39 shares of Entegris common stock.
Pursuant to the requirements of the Securities Exchange Act of 1934, Mykrolis Corporation has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.
| MYKROLIS CORPORATION | ||||||
| Date | August 6, 2005 | By: | /s/ Gideon Argov | |||
| Name: | Gideon Argov | |||||
| Title: | Chief Executive Officer | |||||
