UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
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FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported): April 22, 2004
MKS Instruments, Inc.
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(Exact name of registrant as specified in charter)
Massachusetts 0-23621 04-2277512
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(State or other jurisdiction of (Commission (IRS Employer
incorporation) File Number) Identification No.)
90 Industrial Way, Wilmington, Massachusetts 01887
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(Address of principal executive offices) (Zip Code)
Registrant's telephone number, including area code: (978) 284-4000
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(Former name or former address, if changed since last report)
ITEM 5. OTHER EVENTS AND REGULATION FD DISCLOSURE.
On April 22, 2004, the Board of Directors of MKS Instruments, Inc. (the
"Company") appointed Leo Berlighieri, the Company's Vice President and Chief
Operating Officer, as President and Chief Operating Officer. John R. Bertucci
resigned as President, but shall continue in his role as the Company's Chairman
and Chief Executive Officer. The full text of the press release issued by the
Company on April 26, 2004 in connection with the management change is attached
as Exhibit 99.1 to this Current Report on Form 8-K.
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.
Date: April 26, 2004 MKS Instruments, Inc.
By: /s/ Ronald C. Weigner
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Ronald C. Weigner,
Vice President & Chief Financial Officer
EXHIBIT INDEX
Exhibit No. Description
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99.1 Press release dated April 26, 2004