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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 5 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   –       –       •   2006-03-30 4 S $23.17 $2,317,000 I/I (100,000) 4,211,580 -
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 Spouse of Chairman   –       –      –    2008-04-30 4 AS $23.30 $1,747,500 D/D (75,000) 2,144,761 0 -
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   –       –       •   2003-10-13 4 AS $23.72 $189,760 D/D (8,000) 5,321,927 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2007-03-01 4 S $23.72 $1,779,000 I/I (75,000) 2,961,580 0 -
MKSI MKS Instruments Inc Spouse of Chairman   –       –      –    2008-05-01 4 AS $23.72 $1,779,000 I/I (75,000) 1,965,206 0 -
MKSI MKS Instruments Inc officerTitle   –       –       •   2007-03-01 4 S $23.90 $179,116 I/I (7,483) 2,961,580 0 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2007-02-28 4 S $24.01 $1,800,750 D/D (75,000) 3,246,784 0 -
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   –       –       •   2003-08-25 4 AS $24.12 $192,960 D/D (8,000) 5,377,927 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-08-25 4 AS $24.12 $192,960 I/I (8,000) 5,117,094 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-09-15 4 AS $24.12 $192,960 I/I (8,000) 5,093,094 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-09-15 4 AS $24.12 $192,960 D/D (8,000) 5,353,927 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-04-27 4 S $24.28 $2,428,000 I/I (100,000) 4,111,580 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-09-22 4 AS $24.36 $194,880 D/D (8,000) 5,345,927 -
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   –       –       •   2007-03-29 4 S $25.26 $2,526,000 I/I (100,000) 2,861,580 0 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2007-03-28 4 S $25.47 $2,547,000 D/D (100,000) 3,146,784 0 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-11-24 4 AS $25.67 $205,360 D/D (8,000) 5,273,927 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-11-24 4 AS $25.67 $205,360 I/I (8,000) 5,103,173 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-11-03 4 AS $25.78 $206,240 I/I (8,000) 5,131,173 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-11-03 4 AS $25.78 $206,240 D/D (8,000) 5,301,927 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-12-08 4 AS $25.83 $103,320 D/D (4,000) 5,257,927 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2003-12-08 4 AS $25.83 $100,737 I/I (3,900) 5,087,173 -

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