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Insider Information:   Bertucci Claire R
Relationship:   Spouse of Chairman
City:  
State:  
   
Insider Summary:
  
   
Companies Owned :   1    
Direct Shares   2,144,761    

Indirect Shares

  1,965,206      
Direct Value   $271,505,295    

Indirect Value

  $248,775,428      
Total Shares   4,109,967      
Total Value   $520,280,723      


MKS Instruments Inc
 $271,505,295 MKS Instruments Inc
 $271,505,295
 


Historical Performance :
Based on 6 Month Return Percentages
Buys 
Sells 

     Total Filings :

    0   
    0    

     Stock price went up :

    0   
    0    
     Stock price went down :
    0   
    0    
   
     Gain/Loss Ratio :
   0.0   
   0.0   
     Percentage Gain/Loss :
     0.0%
   0.0%
     
   
Holdings :
     Menu Company Name Ticker Relation Direct Date Direct Shares Indirect Date Indirect Shares Total Value Sold  
            MKS Instruments Inc MKSI Spouse of Chairman 2008-05-01 2,144,761 2008-05-01 1,965,206    Premium*  
* Premium Members only  

Records found :    155         Free Registration Required For Full Results.    Limit: 25

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  Page 4 of 7
Ticker Company Name Relation   Off-Dir-10% Trans. Date Form Action Price Mkt Value D/I Shares    Holdings   
Rank

 
3m +/-  
Form
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-05-24 4 AS $20.35 $2,035,000 D/D (100,000) 4,146,784 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-03-30 4 S $23.17 $2,317,000 I/I (100,000) 4,211,580 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-04-26 4 S $24.03 $2,403,000 D/D (100,000) 4,246,784 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-03-02 4 AS $22.56 $2,256,000 I/I (100,000) 4,311,580 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-03-29 4 S $23.25 $2,325,000 D/D (100,000) 4,346,784 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2004-01-23 4 S $26.25 $2,249,993 I/I (85,714) 4,352,386 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2004-10-26 4 OE $6.14 $28,250 I/I 4,601 4,379,246 -
MKSI MKS Instruments Inc officerTitle   –       –       •   2005-11-30 4 GD $0.00 $0 I/I 133,334 4,411,580 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2004-01-21 4 S $26.25 $14,999,985 I/I (571,428) 4,438,100 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-03-01 4 AS $22.73 $2,273,000 D/D (100,000) 4,446,784 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2005-09-15 4 OE $13.91 $192,014 I/I 13,804 4,544,914 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2004-01-23 4 S $26.25 $2,249,993 D/D (85,714) 4,550,784 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2004-01-21 4 S $26.25 $15,000,011 D/D (571,429) 4,636,498 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2004-01-06 4 AS $29.66 $1,483,000 I/I (50,000) 5,009,528 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-10-20 4 AS $21.68 $86,720 I/I (4,000) 5,057,094 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-12-30 4 GD $0.00 $0 I/I 27,645 5,059,528 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-10-13 4 AS $23.72 $189,760 I/I (8,000) 5,061,094 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-11-10 4/A AS $27.69 $332,280 I/I (12,000) 5,061,094 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-10-07 4 AS $23.00 $89,700 I/I (3,900) 5,069,094 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-10-06 4 AS $22.46 $92,086 I/I (4,100) 5,072,994 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-09-03 4/A GD $0.00 $0 I/I 36,000 5,073,094 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-09-29 4 AS $22.47 $179,760 I/I (8,000) 5,077,094 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-09-22 4 AS $24.36 $194,880 I/I (8,000) 5,085,094 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-12-08 4 AS $25.83 $100,737 I/I (3,900) 5,087,173 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-12-01 4 AS $27.54 $330,480 I/I (12,000) 5,091,073 -

  155  Records found
  1   2   3   4  5   6   7      
  Page 4 of 7  
 
Free Registration Required For Full Results.    Limit: 25

 
 
  Transaction Code Key: Ownership Code Key
  B - Buy AB - Automatic Buy D - Direct Ownership
  S - Sell AS - Automatic Sell I - Indirect Ownership
OE - Options Exercised A - Aquired
  IO - Initital Ownership D - Disposed