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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   $277,617,864    

Indirect Value

  $254,376,265      
Total Shares   4,109,967      
Total Value   $531,994,128      


MKS Instruments Inc
 $277,617,864 MKS Instruments Inc
 $277,617,864
 


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 7 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 officerTitle   –       –       •   2005-11-30 4 GD $0.00 $0 I/I 133,334 4,411,580 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-12-15 4 GD $0.00 $0 I/I 150,000 3,161,580 0 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2004-10-22 4 GD $0.00 $0 I/I 158,057 151,864 -
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   –       –       •   2004-01-21 4 S $26.25 $15,000,011 D/D (571,429) 4,636,498 -

  155  Records found
  1   2   3   4   5   6   7     
  Page 7 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