The following table details the trading activities
(stock purchases, stock sales, and stock option exercises)
reported to the Securities and Exchange Commission (SEC)
by insider Stewart William D since year 2005.
The trader's CIK number is 1202731.
At the time of this reporting, Stewart William D is the V.P. & General Manager of Mks Instruments Inc .
(stock ticker symbol MKSI).
See this page for all insider trading activities at Mks Instruments Inc .
Stock purchases, sales, and option exercises reported by insider Stewart William D since 2005.
Trade Date
Symbol
Company Name (Issuer)
Trade Type
Shares
Price ($)
Value ($)
2008-05-19
MKSI
Mks Instruments Inc
Option Exercise
7,500
14.72
110,400
2008-05-19
MKSI
Mks Instruments Inc
Sale
7,500
25.64
192,300
2008-03-01
MKSI
Mks Instruments Inc
Option Exercise
3,786
.00
0
2007-06-11
MKSI
Mks Instruments Inc
Option Exercise
133
24.50
3,258
2007-06-11
MKSI
Mks Instruments Inc
Sale
133
27.40
3,644
2007-06-04
MKSI
Mks Instruments Inc
Sale
7,448
27.40
204,075
2007-06-04
MKSI
Mks Instruments Inc
Option Exercise
7,448
24.50
182,476
2007-06-01
MKSI
Mks Instruments Inc
Sale
15,990
27.42
438,445
2007-06-01
MKSI
Mks Instruments Inc
Option Exercise
15,990
24.50
391,755
2007-05-31
MKSI
Mks Instruments Inc
Option Exercise
20,000
24.50
490,000
2007-05-31
MKSI
Mks Instruments Inc
Sale
20,000
27.21
544,200
2007-05-22
MKSI
Mks Instruments Inc
Option Exercise
17,825
24.00
427,800
2007-05-22
MKSI
Mks Instruments Inc
Sale
17,825
27.05
482,166
2007-05-21
MKSI
Mks Instruments Inc
Option Exercise
23,050
20.12
463,650
2007-05-21
MKSI
Mks Instruments Inc
Sale
23,050
27.10
624,655
2007-05-07
MKSI
Mks Instruments Inc
Option Exercise
1,972
24.50
48,314
2007-05-07
MKSI
Mks Instruments Inc
Sale
1,972
27.60
54,427
2007-05-04
MKSI
Mks Instruments Inc
Option Exercise
24,557
24.50
601,646
2007-05-04
MKSI
Mks Instruments Inc
Sale
24,557
27.60
677,773
2007-05-02
MKSI
Mks Instruments Inc
Sale
55,900
27.60
1,542,840
2007-05-02
MKSI
Mks Instruments Inc
Option Exercise
55,900
19.90
1,112,410
2007-04-16
MKSI
Mks Instruments Inc
Option Exercise
28,125
17.74
498,937
2007-04-16
MKSI
Mks Instruments Inc
Sale
28,125
26.86
755,381
2006-04-19
MKSI
Mks Instruments Inc
Option Exercise
56,172
18.04
1,013,230
2006-04-19
MKSI
Mks Instruments Inc
Sale
56,172
23.86
1,340,263
Insider trading activities including stock purchases, stock sales, and option exercises
listed in the above table cannot be completely guaranteed as to their accuracy.
For more information regarding the trades made by Stewart William D
(V.P. & General Manager of Mks Instruments Inc at the time of this reporting) see
the Securities and Exchange Commission (SEC) website.
