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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   –       –       •   2005-07-20 4 S $20.00 $9,420 I/I (471) 2,826 -
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   –       –       •   2005-10-24 4 S $18.41 $8,671 I/I (471) 2,355 -
MKSI MKS Instruments Inc officerTitle   –       –       •   2005-11-30 4 GD $0.00 $0 I/I 133,334 4,411,580 -
MKSI MKS Instruments Inc officerTitle   –       –       •   2006-01-03 4 S $26.87 $12,656 I/I (471) 1,884 -
MKSI MKS Instruments Inc officerTitle   –       –       •   2006-01-18 4 S $20.19 $9,509 I/I (471) 1,413 -
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   –       –       •   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   –       –       •   2006-03-30 4 S $23.17 $2,317,000 I/I (100,000) 4,211,580 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-04-10 4 S $22.32 $21,025 I/I (942) 471 -
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   –       –       •   2006-04-27 4 S $24.28 $2,428,000 I/I (100,000) 4,111,580 -
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   –       –       •   2006-05-25 4 AS $20.18 $2,018,000 I/I (100,000) 4,011,580 0 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-06-21 4 S $18.95 $1,895,000 D/D (100,000) 4,046,784 0 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-06-22 4 S $19.17 $1,917,000 I/I (100,000) 3,911,580 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-07-18 4 S $18.32 $8,629 I/I (471) 0 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-07-19 4 S $18.98 $1,898,000 D/D (100,000) 3,946,784 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-07-20 4 S $18.82 $1,882,000 I/I (100,000) 3,811,580 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-08-16 4 S $20.68 $2,068,000 D/D (100,000) 3,846,784 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-08-17 4 S $20.68 $2,068,000 I/I (100,000) 3,711,580 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-09-13 4 S $20.29 $2,029,000 D/D (100,000) 3,746,784 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-09-14 4 S $20.05 $2,005,000 I/I (100,000) 3,611,580 0 -
MKSI MKS Instruments Inc 10% Owner   –       –       •   2006-10-11 4 AS $20.88 $2,088,000 D/D (100,000) 3,646,784 0 -

  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