MKS INSTRUMENTS INC S-1

S-1

MKS INSTRUMENTS, INC.

EX-1.1

UNDERWRITING AGREEMENT

EX-3.1

RESTATED ARTICLES OF ORGANIZATION, AS AMENDED

EX-3.3

BY-LAWS OF THE REGISTRANT, AS AMENDED

EX-4.1

SPECIMEN CERTIFICATE REPRESENTING COMMON STOCK

EX-10.1

AMENDED & RESTATED 1995 STOCK INCENTIVE PLAN

EX-10.2

AMENDED AND RESTATED 1996 DIRECTOR STOCK PLAN

EX-10.3

1997 DIRECTOR STOCK OPTION PLAN

EX-10.5

AMENDED & RESTATED EMPLOYMENT AGREEMENT

EX-10.6

AMENDED & RESTATED EMPOYMENT AGREEMENT/J SULLIVAN

EX-10.7

AMENDED & RESTATED EMPLOYMENT AGREEMENT/R. WEIGNER

EX-10.8

AMENDED & RESTATED EMPLOYMENT AGREEMENT/W. STEWART

EX-10.10

LEASE AGREEMENT DATED 12-OCT-1989

EX-10.12

LEASE AGREEMENT DATED 21-SEPT-1995

EX-10.14

REVOLVING CREDIT NOTE ($8,000,000) 23-FEB-1996

EX-10.15

REVOLVING CREDIT NOTE ($12,000,000) 23-FEB-1996

EX-10.16

PROMISSORY NOTE DATED AUGUST 1990

EX-10.17

COMPREHENSIVE SUPPLIER AGREEMENT

EX-10.18

MANAGEMENT INCENTIVE PROGRAM

EX-10.19

LEASE DATED 21-DEC-1989

EX-10.20

LEASE DATED 1-JAN-1996

EX-10.21

LEASE DATED 21-APRIL-1997

EX-10.22

SPLIT DOLLAR AGREEMENT/JOHN BERTUCCI TRUST

EX-10.23

SPLIT DOLLAR AGREEMENT/CLAIRE BERTUCCI TRUST

EX-10.25

EMPLOYMENT AGREEMENT/ JOSEPH MAHER

EX-21.1

SUBSIDIARIES OF THE REGISTRANT

EX-23.2

CONSENT OF PRICEWATERHOUSECOOPERS LLP

EX-27

FINANCIAL DATA SCHEDULE