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Insider Trading: KOMAG INC /DE/
Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of KOMAG INC /DE/ in the last 24 months are illustrated in figures 1 and 2. Table 1 shows the monthly insider trading data of KOMAG INC /DE/ since year 2005. Table 2 shows the detailed insider transactions of KOMAG INC /DE/ since 2005.
The reporting company's ticker symbol is KOMG.
The reporting company's CIK number is 813347.
The total value of stock buying since 2005 is $0.
The total value of stock sales is $22,166,287.
The total value of stock exercises is $2,485,874.
1 year stock price chart,
1 day stock price chart
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Figure 1. Monthly insider transaction values at KOMAG INC /DE/ (KOMG) in the past 24 months.
The trade values of insider stock buys, sales, and option exercises are in logarithmic scale
as shown on the right axis labels.
The detailed monthly and daily insider transactions are listed in the 2 tables below.
08 09 10 11 12 01 2007 02 03 04 05 06 07 08 09 10 11 12 01 2008 02 03 04 05 06 07 -
Figure 2. Average prices of insider buys, sales, and option exercises at KOMAG INC /DE/ (KOMG) in the past 24 months. See table 2 for insider transaction details.
08 09 10 11 12 01 2007 02 03 04 05 06 07 08 09 10 11 12 01 2008 02 03 04 05 06 07 -
Table 1. Monthly summaries of insider stock purchases, sales, and option exercises
for KOMAG INC /DE/ (KOMG).
Trading Period
year-month |
Insider Buying
Shares Value ($) |
Insider Sales
Shares Value ($) |
Option Exercises
Shares Value ($) |
| 2007-06 | 0 | 0 | 11,156 | 315,979 | 21,775 | 20,377 |
| 2007-04 | 0 | 0 | 0 | 0 | 10,000 | 100 |
| 2007-03 | 0 | 0 | 4,499 | 143,963 | 26,477 | 260 |
| 2007-02 | 0 | 0 | 25,987 | 877,533 | 30,675 | 125,872 |
| 2006-12 | 0 | 0 | 8,285 | 326,237 | 4,000 | 42,620 |
| 2006-11 | 0 | 0 | 30,400 | 1,189,892 | 27,491 | 169,002 |
| 2006-10 | 0 | 0 | 859 | 32,633 | 50,859 | 11,520 |
| 2006-09 | 0 | 0 | 40,799 | 1,360,555 | 36,800 | 469,614 |
| 2006-08 | 0 | 0 | 20,450 | 742,450 | 58,975 | 94,483 |
| 2006-06 | 0 | 0 | 5,476 | 227,933 | 11,802 | 118 |
| 2006-05 | 0 | 0 | 152,930 | 6,776,036 | 58,595 | 752,355 |
| 2006-04 | 0 | 0 | 1,900 | 87,365 | 1,900 | 18,658 |
| 2006-03 | 0 | 0 | 39,195 | 1,934,711 | 89,218 | 180,862 |
| 2006-02 | 0 | 0 | 119,937 | 5,700,021 | 104,713 | 581,375 |
| 2006-01 | 0 | 0 | 1,900 | 72,863 | 1,900 | 18,658 |
| 2005-11 | 0 | 0 | 750 | 21,255 | 0 | 0 |
| 2005-10 | 0 | 0 | 1,000 | 30,214 | 0 | 0 |
| 2005-09 | 0 | 0 | 1,000 | 35,498 | 0 | 0 |
| 2005-08 | 0 | 0 | 7,980 | 298,367 | 0 | 0 |
| 2005-07 | 0 | 0 | 1,000 | 32,788 | 0 | 0 |
| 2005-06 | 0 | 0 | 18,500 | 530,443 | 0 | 0 |
| 2005-05 | 0 | 0 | 28,500 | 736,552 | 0 | 0 |
| 2005-04 | 0 | 0 | 20,000 | 451,380 | 0 | 0 |
| 2005-03 | 0 | 0 | 11,000 | 241,619 | 0 | 0 |
Table 2. Detailed insider stock purchases, sales, and option exercises
for KOMAG INC /DE/ (KOMG)
| Trade Date |
Insider Name |
Trade Type |
Shares |
Price ($) |
Value ($) |
| 2007-06-29 | Wolf Dennis P (Director) | Sale | 5,526 | 31.71 | 175,229 |
| 2007-06-29 | Wolf Dennis P (Director) | Option Exercise | 625 | 10.30 | 6,437 |
| 2007-06-20 | Workman Michael (Director) | Option Exercise | 2,269 | .01 | 22 |
| 2007-06-19 | Takata David G (Director) | Option Exercise | 2,269 | .01 | 22 |
| 2007-06-18 | Wolf Dennis P (Director) | Option Exercise | 2,269 | .01 | 22 |
| 2007-06-15 | Swimm Kenneth Robert (Director) | Option Exercise | 2,269 | .01 | 22 |
| 2007-06-14 | Eyre Chris A (Director) | Option Exercise | 2,269 | .01 | 22 |
| 2007-06-14 | Kashnow Richard A (Director) | Option Exercise | 4,538 | .01 | 45 |
| 2007-06-13 | Van Wickle Harry George (Director) | Option Exercise | 2,269 | .01 | 22 |
| 2007-06-13 | Brahe Paul A (Director) | Option Exercise | 2,269 | .01 | 22 |
| 2007-06-08 | Brahe Paul A (Director) | Sale | 5,630 | 25.00 | 140,750 |
| 2007-06-08 | Brahe Paul A (Director) | Option Exercise | 729 | 18.85 | 13,741 |
| 2007-04-30 | Bayless Kathleen A (EVP, CFO) | Option Exercise | 5,000 | .01 | 50 |
| 2007-04-20 | Casey Edward James (SVP, COO) | Option Exercise | 5,000 | .01 | 50 |
| 2007-03-15 | Casey Edward James (VP, COO) | Option Exercise | 4,672 | .01 | 46 |
| 2007-03-15 | Martin Ray L (EXEC VP, SLS CUS SVC & PROD) | Option Exercise | 4,672 | .01 | 46 |
| 2007-03-14 | Yamashita Tsutomu T (EVP, CTO) | Option Exercise | 5,451 | .01 | 54 |
| 2007-03-09 | Hammack William (SVP, HUMAN RESOURCES) | Sale | 2,571 | 31.95 | 82,143 |
| 2007-03-09 | Hammack William (SVP, HUMAN RESOURCES) | Option Exercise | 3,894 | .01 | 38 |
| 2007-03-09 | Bayless Kathleen A (SVP, CFO) | Option Exercise | 3,894 | .01 | 38 |
| 2007-03-08 | Judy Paul G (VP, CORPORATE CONTROLLER & CAO) | Option Exercise | 3,894 | .01 | 38 |
| 2007-03-08 | Harris Timothy David (CEO) | Sale | 1,928 | 32.06 | 61,820 |
| 2007-02-28 | Harris Timothy David (CEO) | Option Exercise | 15,576 | .01 | 155 |
| 2007-02-28 | Norris Peter (EXEC VP, STRATEGIC BUS DEVELOP) | Option Exercise | 3,894 | .01 | 38 |
| 2007-02-23 | Judy Paul G (VP, CORPORATE CONTROLLER & CAO) | Sale | 3,956 | 35.00 | 138,460 |
| 2007-02-23 | Judy Paul G (VP, CORPORATE CONTROLLER & CAO) | Option Exercise | 528 | 12.68 | 6,695 |
| 2007-02-23 | Bayless Kathleen A (SVP, CFO) | Sale | 5,729 | 35.00 | 200,515 |
| 2007-02-23 | Bayless Kathleen A (SVP, CFO) | Option Exercise | 5,729 | 9.82 | 56,258 |
| 2007-02-23 | Takata David G (Director) | Sale | 2,500 | 35.00 | 87,500 |
| 2007-02-23 | Takata David G (Director) | Option Exercise | 2,500 | 13.16 | 32,900 |
| 2007-02-22 | Harris Timothy David (CEO) | Sale | 1,928 | 32.65 | 62,951 |
| 2007-02-20 | Yamashita Tsutomu T (EVP, CTO) | Sale | 6,965 | 32.13 | 223,793 |
| 2007-02-20 | Yamashita Tsutomu T (EVP, CTO) | Option Exercise | 1,823 | 12.83 | 23,389 |
| 2007-02-20 | Wolf Dennis P (Director) | Sale | 625 | 32.13 | 20,081 |
| 2007-02-20 | Wolf Dennis P (Director) | Option Exercise | 625 | 10.30 | 6,437 |
| 2007-02-05 | Harris Timothy David (CEO) | Sale | 4,284 | 33.67 | 144,233 |
| 2006-12-08 | Takata David G (Director) | Sale | 1,500 | 39.29 | 58,940 |
| 2006-12-08 | Takata David G (Director) | Option Exercise | 1,500 | 6.48 | 9,720 |
| 2006-12-06 | Harris Timothy David (CEO) | Sale | 4,285 | 39.71 | 170,147 |
| 2006-12-01 | Takata David G (Director) | Sale | 2,500 | 38.86 | 97,150 |
| 2006-12-01 | Takata David G (Director) | Option Exercise | 2,500 | 13.16 | 32,900 |
| 2006-11-30 | Eyre Chris A (Director) | Sale | 2,187 | 40.00 | 87,480 |
| 2006-11-30 | Eyre Chris A (Director) | Option Exercise | 2,187 | 12.83 | 28,059 |
| 2006-11-20 | Brahe Paul A (Director) | Sale | 840 | 40.04 | 33,633 |
| 2006-11-20 | Brahe Paul A (Director) | Option Exercise | 840 | 12.83 | 10,777 |
| 2006-11-20 | Wolf Dennis P (Director) | Sale | 875 | 40.06 | 35,051 |
| 2006-11-20 | Wolf Dennis P (Director) | Option Exercise | 875 | 10.30 | 9,012 |
| 2006-11-15 | Van Wickle Harry George (Director) | Sale | 5,417 | 40.28 | 218,197 |
| 2006-11-15 | Van Wickle Harry George (Director) | Option Exercise | 5,417 | 9.82 | 53,194 |
| 2006-11-14 | Workman Michael (Director) | Sale | 2,000 | 39.19 | 78,373 |
| 2006-11-09 | Eyre Chris A (Director) | Sale | 3,250 | 40.00 | 130,000 |
| 2006-11-09 | Eyre Chris A (Director) | Option Exercise | 1,250 | 16.00 | 20,006 |
| 2006-11-09 | Norris Peter (EXEC VP, STRATEGIC BUS DEVELOP) | Sale | 2,838 | 40.00 | 113,520 |
| 2006-11-09 | Norris Peter (EXEC VP, STRATEGIC BUS DEVELOP) | Option Exercise | 2,838 | 9.82 | 27,869 |
| 2006-11-07 | Bayless Kathleen A (SVP, CFO) | Sale | 1,000 | 38.00 | 38,000 |
| 2006-11-06 | Judy Paul G (VP, CORPORATE CONTROLLER & CAO) | Sale | 2,709 | 37.99 | 102,917 |
| 2006-11-06 | Judy Paul G (VP, CORPORATE CONTROLLER & CAO) | Option Exercise | 1,584 | 12.68 | 20,085 |
| 2006-11-06 | Harris Timothy David (CEO) | Sale | 4,284 | 37.99 | 162,743 |
| 2006-11-06 | Norris Peter (EXEC VP, STRATEGIC BUS DEVELOP) | Sale | 5,000 | 38.00 | 189,978 |
| 2006-11-01 | Norris Peter (EXEC VP, STRATEGIC BUS DEVELOP) | Option Exercise | 12,500 | .00 | 0 |
| 2006-10-31 | Hammack William (SVP, HUMAN RESOURCES) | Sale | 859 | 37.99 | 32,633 |
| 2006-10-31 | Hammack William (SVP, HUMAN RESOURCES) | Option Exercise | 859 | 12.83 | 11,020 |
| 2006-10-24 | Casey Edward James (VP, COO) | Option Exercise | 25,000 | .01 | 250 |
| 2006-10-10 | Yamashita Tsutomu T (EVP, CTO) | Option Exercise | 25,000 | .01 | 250 |
| 2006-09-25 | Tan Thian H (CEO) | Sale | 32,500 | 33.30 | 1,082,228 |
| 2006-09-25 | Tan Thian H (CEO) | Option Exercise | 32,500 | 12.83 | 416,975 |
| 2006-09-20 | Wolf Dennis P (Director) | Sale | 3,000 | 34.38 | 103,128 |
| 2006-09-20 | Wolf Dennis P (Director) | Option Exercise | 1,000 | 10.30 | 10,300 |
| 2006-09-15 | Russak Michael A (EVP, CTO) | Sale | 4,299 | 32.93 | 141,566 |
| 2006-09-15 | Russak Michael A (EVP, CTO) | Option Exercise | 3,300 | 12.83 | 42,339 |
| 2006-09-14 | Bayless Kathleen A (SVP, CFO) | Sale | 1,000 | 33.63 | 33,633 |
| 2006-08-25 | Tan Thian H (CEO) | Sale | 5,475 | 34.95 | 191,333 |
| 2006-08-22 | Van Wickle Harry George (Director) | Sale | 5,965 | 36.82 | 219,657 |
| 2006-08-22 | Van Wickle Harry George (Director) | Option Exercise | 3,333 | 6.48 | 21,597 |
| 2006-08-21 | Brahe Paul A (Director) | Sale | 1,248 | 37.46 | 46,754 |
| 2006-08-21 | Brahe Paul A (Director) | Option Exercise | 1,248 | 12.83 | 16,011 |
| 2006-08-16 | Harris Timothy David (COO) | Option Exercise | 50,000 | .01 | 500 |
| 2006-08-15 | Russak Michael A (EVP, CTO) | Sale | 4,300 | 36.68 | 157,712 |
| 2006-08-15 | Russak Michael A (EVP, CTO) | Option Exercise | 3,300 | 12.83 | 42,339 |
| 2006-08-14 | Hammack William (SVP, HUMAN RESOURCES) | Sale | 1,094 | 36.52 | 39,958 |
| 2006-08-14 | Hammack William (SVP, HUMAN RESOURCES) | Option Exercise | 1,094 | 12.83 | 14,036 |
| 2006-08-14 | Bayless Kathleen A (SVP, CFO) | Sale | 2,000 | 36.67 | 73,343 |
| 2006-08-01 | Van Wickle Harry George (Director) | Sale | 368 | 37.21 | 13,693 |
| 2006-06-23 | Tan Thian H (CEO) | Sale | 5,476 | 41.62 | 227,933 |
| 2006-06-09 | Van Wickle Harry George (Director) | Option Exercise | 2,901 | .01 | 29 |
| 2006-06-08 | Brahe Paul A (Director) | Option Exercise | 2,901 | .01 | 29 |
| 2006-06-08 | Takata David G (Director) | Option Exercise | 6,000 | .01 | 60 |
| 2006-05-25 | Tan Thian H (CEO) | Sale | 27,500 | 43.83 | 1,195,072 |
| 2006-05-25 | Tan Thian H (CEO) | Option Exercise | 27,500 | 12.83 | 352,825 |
| 2006-05-23 | Tan Thian H (CEO) | Sale | 17,500 | 45.49 | 786,398 |
| 2006-05-23 | Hammack William (SVP, HUMAN RESOURCES) | Sale | 859 | 44.42 | 38,155 |
| 2006-05-23 | Hammack William (SVP, HUMAN RESOURCES) | Option Exercise | 859 | 12.83 | 11,020 |
| 2006-05-22 | Brahe Paul A (Director) | Sale | 3,248 | 43.68 | 141,875 |
| 2006-05-22 | Brahe Paul A (Director) | Option Exercise | 1,248 | 12.83 | 16,011 |
| 2006-05-15 | Bayless Kathleen A (SVP, CFO) | Sale | 1,000 | 42.17 | 42,167 |
| 2006-05-08 | Tan Thian H (CEO) | Sale | 16,755 | 44.70 | 747,519 |
| 2006-05-08 | Russak Michael A (EVP, CTO) | Sale | 1,900 | 44.59 | 84,729 |
| 2006-05-08 | Russak Michael A (EVP, CTO) | Option Exercise | 1,900 | 9.82 | 18,658 |
| 2006-05-08 | Norris Peter (EXEC VP, STRATEGIC BUS DEVELOP) | Sale | 1,047 | 44.65 | 46,748 |
| 2006-05-08 | Norris Peter (EXEC VP, STRATEGIC BUS DEVELOP) | Option Exercise | 1,047 | 18.85 | 19,735 |
| 2006-05-08 | Martin Ray L (EXEC VP, SLS CUS SVC & PROD) | Sale | 28,719 | 44.66 | 1,281,673 |
| 2006-05-08 | Martin Ray L (EXEC VP, SLS CUS SVC & PROD) | Option Exercise | 26,041 | 12.83 | 334,106 |
| 2006-04-10 | Russak Michael A (EVP, CTO) | Sale | 1,900 | 45.98 | 87,365 |
| 2006-04-10 | Russak Michael A (EVP, CTO) | Option Exercise | 1,900 | 9.82 | 18,658 |
| 2006-03-23 | Tan Thian H (CEO) | Sale | 22,977 | 49.06 | 1,127,157 |
| 2006-03-16 | Martin Ray L (EXEC VP, SLS CUS SVC & PROD) | Option Exercise | 15,000 | .01 | 150 |
| 2006-03-15 | Russak Michael A (EVP, CTO) | Option Exercise | 16,000 | .01 | 160 |
| 2006-03-15 | Takata David G (Director) | Sale | 3,500 | 51.48 | 180,183 |
| 2006-03-15 | Takata David G (Director) | Option Exercise | 3,500 | 6.48 | 22,680 |
| 2006-03-13 | Hammack William (SVP, HUMAN RESOURCES) | Option Exercise | 12,000 | .01 | 120 |
| 2006-03-10 | Hammack William (SVP, HUMAN RESOURCES) | Sale | 6,172 | 48.51 | 299,412 |
| 2006-03-10 | Hammack William (SVP, HUMAN RESOURCES) | Option Exercise | 6,172 | 12.83 | 79,186 |
| 2006-03-08 | Norris Peter (EXEC VP, STRATEGIC BUS DEVELOP) | Option Exercise | 12,000 | .01 | 120 |
| 2006-03-07 | Russak Michael A (EVP, CTO) | Sale | 1,900 | 50.10 | 95,187 |
| 2006-03-07 | Russak Michael A (EVP, CTO) | Option Exercise | 1,900 | 9.82 | 18,658 |
| 2006-03-06 | Harris Timothy David (COO) | Option Exercise | 18,000 | .01 | 180 |
| 2006-03-02 | Bayless Kathleen A (SVP, CFO) | Sale | 4,646 | 50.10 | 232,772 |
| 2006-03-02 | Bayless Kathleen A (SVP, CFO) | Option Exercise | 4,646 | 12.83 | 59,608 |
| 2006-02-27 | Tan Thian H (CEO) | Sale | 35,745 | 46.12 | 1,694,454 |
| 2006-02-27 | Tan Thian H (CEO) | Option Exercise | 35,000 | 12.83 | 449,050 |
| 2006-02-27 | Norris Peter (EXEC VP, STRATEGIC BUS DEVELOP) | Sale | 15,627 | 47.70 | 741,455 |
| 2006-02-27 | Norris Peter (EXEC VP, STRATEGIC BUS DEVELOP) | Option Exercise | 3,127 | 9.82 | 30,707 |
| 2006-02-24 | Judy Paul G (VP, CORPORATE CONTROLLER & CAO) | Option Exercise | 8,000 | .01 | 80 |
| 2006-02-23 | Tan Thian H (CEO) | Sale | 17,500 | 47.53 | 832,133 |
| 2006-02-23 | Bayless Kathleen A (SVP, CFO) | Option Exercise | 15,000 | .01 | 150 |
| 2006-02-21 | Brahe Paul A (Director) | Sale | 1,248 | 49.59 | 61,892 |
| 2006-02-21 | Brahe Paul A (Director) | Option Exercise | 1,248 | 12.83 | 16,011 |
| 2006-02-21 | Wolf Dennis P (Director) | Sale | 1,250 | 49.76 | 62,200 |
| 2006-02-21 | Wolf Dennis P (Director) | Option Exercise | 1,250 | 10.30 | 12,875 |
| 2006-02-17 | Judy Paul G (VP, CORPORATE CONTROLLER & CAO) | Sale | 3,298 | 48.66 | 160,480 |
| 2006-02-17 | Judy Paul G (VP, CORPORATE CONTROLLER & CAO) | Option Exercise | 1,584 | 12.68 | 20,085 |
| 2006-02-17 | Eyre Chris A (Director) | Sale | 2,604 | 48.58 | 126,515 |
| 2006-02-17 | Eyre Chris A (Director) | Option Exercise | 2,604 | 12.83 | 33,409 |
| 2006-02-15 | Tan Thian H (CEO) | Option Exercise | 35,000 | .01 | 350 |
| 2006-02-07 | Russak Michael A (EVP, CTO) | Sale | 1,900 | 46.38 | 88,131 |
| 2006-02-07 | Russak Michael A (EVP, CTO) | Option Exercise | 1,900 | 9.82 | 18,658 |
| 2006-01-09 | Russak Michael A (EVP, CTO) | Sale | 1,900 | 38.35 | 72,863 |
| 2006-01-09 | Russak Michael A (EVP, CTO) | Option Exercise | 1,900 | 9.82 | 18,658 |
| 2005-11-07 | Judy Paul G (CAO) | Sale | 750 | 28.34 | 21,255 |
| 2005-10-10 | Bayless Kathleen A (VP, CFO) | Sale | 1,000 | 30.21 | 30,214 |
| 2005-09-09 | Bayless Kathleen A (VP, CFO) | Sale | 1,000 | 35.50 | 35,498 |
| 2005-08-12 | Van Wickle Harry George (Director) | Sale | 2,000 | 37.16 | 74,320 |
| 2005-08-08 | Bayless Kathleen A (VP, CFO) | Sale | 1,000 | 37.20 | 37,198 |
| 2005-08-05 | Hammack William (VP, HUMAN RESOURCES) | Sale | 4,980 | 37.52 | 186,849 |
| 2005-07-11 | Bayless Kathleen A (VP, CFO) | Sale | 1,000 | 32.79 | 32,788 |
| 2005-06-14 | Bayless Kathleen A (VP, CFO) | Sale | 1,000 | 30.36 | 30,358 |
| 2005-06-06 | Dabier Ali (VP, COO) | Sale | 7,500 | 28.20 | 211,485 |
| 2005-06-01 | Tan Thian H (CEO) | Sale | 10,000 | 28.86 | 288,600 |
| 2005-05-25 | Tan Thian H (CEO) | Sale | 10,000 | 27.47 | 274,660 |
| 2005-05-16 | Yamashita Tsutomu T (VP, PROCESS DEVELOPM) | Sale | 7,500 | 25.21 | 189,082 |
| 2005-05-13 | Yamashita Tsutomu T (VP, PROCESS DEVELOPM) | Sale | 10,000 | 24.78 | 247,810 |
| 2005-05-13 | Bayless Kathleen A (VP, CFO) | Sale | 1,000 | 25.00 | 25,000 |
| 2005-04-25 | Tan Thian H (CEO) | Sale | 10,000 | 22.74 | 227,420 |
| 2005-04-01 | Tan Thian H (CEO) | Sale | 10,000 | 22.40 | 223,960 |
| 2005-03-28 | Tan Thian H (CEO) | Sale | 10,000 | 21.86 | 218,619 |
| 2005-03-10 | Bayless Kathleen A (VP, CFO) | Sale | 1,000 | 23.00 | 23,000 |
Insider trading activities including stock purchases, stock sales, and option exercises
listed in the above tables cannot be completely guaranteed as to their accuracy.
For more insider trading information of KOMAG INC /DE/ (symbol KOMG,
CIK number 813347) see
the Securities and Exchange Commission (SEC) website.
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