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Insider Trading: SUPERTEX INC
Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of SUPERTEX INC in the last 24 months are illustrated in figures 1 and 2. Table 1 shows the monthly insider trading data of SUPERTEX INC since year 2005. Table 2 shows the detailed insider transactions of SUPERTEX INC since 2005.
The reporting company's ticker symbol is SUPX.
The reporting company's CIK number is 730000.
The total value of stock buying since 2005 is $102,109.
The total value of stock sales is $10,704,566.
The total value of stock exercises is $3,387,037.
1 year stock price chart,
1 day stock price chart
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Figure 1. Monthly insider transaction values at SUPERTEX INC (SUPX) in the past 24 months.
The trade values of insider stock buys, sales, and option exercises are in logarithmic scale
as shown on the right axis labels.
The detailed monthly and daily insider transactions are listed in the 2 tables below.
08 09 10 11 12 01 2007 02 03 04 05 06 07 08 09 10 11 12 01 2008 02 03 04 05 06 07 -
Figure 2. Average prices of insider buys, sales, and option exercises at SUPERTEX INC (SUPX) in the past 24 months. See table 2 for insider transaction details.
08 09 10 11 12 01 2007 02 03 04 05 06 07 08 09 10 11 12 01 2008 02 03 04 05 06 07 -
Table 1. Monthly summaries of insider stock purchases, sales, and option exercises
for SUPERTEX INC (SUPX).
Trading Period
year-month |
Insider Buying
Shares Value ($) |
Insider Sales
Shares Value ($) |
Option Exercises
Shares Value ($) |
| 2008-05 | 0 | 0 | 8,000 | 204,890 | 78,000 | 915,040 |
| 2008-03 | 1,000 | 19,765 | 0 | 0 | 1,600 | 20,048 |
| 2008-02 | 4,000 | 82,344 | 0 | 0 | 0 | 0 |
| 2008-01 | 0 | 0 | 0 | 0 | 9,000 | 96,750 |
| 2007-12 | 0 | 0 | 5,000 | 159,556 | 3,000 | 52,020 |
| 2007-11 | 0 | 0 | 14,100 | 493,093 | 2,000 | 39,125 |
| 2007-09 | 0 | 0 | 4,500 | 168,351 | 4,500 | 88,031 |
| 2007-08 | 0 | 0 | 5,000 | 174,715 | 0 | 0 |
| 2007-06 | 0 | 0 | 3,000 | 100,341 | 4,000 | 67,790 |
| 2007-05 | 0 | 0 | 0 | 0 | 29,000 | 337,560 |
| 2007-02 | 0 | 0 | 12,000 | 488,914 | 0 | 0 |
| 2006-12 | 0 | 0 | 9,000 | 414,904 | 36,000 | 597,266 |
| 2006-11 | 0 | 0 | 12,500 | 567,000 | 19,786 | 558,657 |
| 2006-10 | 0 | 0 | 2,772 | 122,938 | 2,500 | 38,578 |
| 2006-06 | 0 | 0 | 16,000 | 648,577 | 16,000 | 237,100 |
| 2006-05 | 0 | 0 | 2,000 | 79,000 | 2,000 | 36,902 |
| 2006-03 | 0 | 0 | 0 | 0 | 5,000 | 67,500 |
| 2006-02 | 0 | 0 | 0 | 0 | 7,000 | 102,180 |
| 2006-01 | 0 | 0 | 0 | 0 | 7,000 | 132,490 |
| 2005-12 | 0 | 0 | 33,996 | 1,511,964 | 0 | 0 |
| 2005-11 | 0 | 0 | 99,490 | 4,066,663 | 0 | 0 |
| 2005-10 | 0 | 0 | 37,000 | 1,368,010 | 0 | 0 |
| 2005-08 | 0 | 0 | 5,000 | 135,650 | 0 | 0 |
Table 2. Detailed insider stock purchases, sales, and option exercises
for SUPERTEX INC (SUPX)
| Trade Date |
Insider Name |
Trade Type |
Shares |
Price ($) |
Value ($) |
| 2008-05-30 | Pao Henry (President and CEO) | Option Exercise | 70,000 | 11.64 | 814,800 |
| 2008-05-28 | Schlam Elliott (Director) | Sale | 8,000 | 25.61 | 204,890 |
| 2008-05-28 | Schlam Elliott (Director) | Option Exercise | 8,000 | 12.53 | 100,240 |
| 2008-03-11 | Loveless W Mark (Director) | Option Exercise | 1,600 | 12.53 | 20,048 |
| 2008-03-04 | Kagel Phil (VP, Finance & CFO) | Purchase | 1,000 | 19.76 | 19,765 |
| 2008-02-29 | Kagel Phil (VP, Finance & CFO) | Purchase | 1,000 | 20.87 | 20,867 |
| 2008-02-01 | Lee Michael James (VP, IC Design) | Purchase | 3,000 | 20.49 | 61,477 |
| 2008-01-25 | Choy Benedict C K (Senior Vice President) | Option Exercise | 9,000 | 10.75 | 96,750 |
| 2007-12-11 | Gonzalez Franklin (VP, Process Technology) | Sale | 4,000 | 31.45 | 125,806 |
| 2007-12-11 | Gonzalez Franklin (VP, Process Technology) | Option Exercise | 2,000 | 17.34 | 34,680 |
| 2007-12-04 | Kapur Dilip (VP, Standard Products) | Sale | 1,000 | 33.75 | 33,750 |
| 2007-12-04 | Kapur Dilip (VP, Standard Products) | Option Exercise | 1,000 | 17.34 | 17,340 |
| 2007-11-30 | Schlam Elliott (Director) | Sale | 2,000 | 34.23 | 68,460 |
| 2007-11-30 | Schlam Elliott (Director) | Option Exercise | 2,000 | 19.56 | 39,125 |
| 2007-11-28 | Choy Benedict C K (Senior Vice President) | Sale | 8,569 | 35.12 | 300,943 |
| 2007-11-14 | Choy Benedict C K (Senior Vice President) | Sale | 3,531 | 35.03 | 123,690 |
| 2007-09-12 | Loveless W Mark (Director) | Sale | 2,000 | 37.64 | 75,277 |
| 2007-09-12 | Loveless W Mark (Director) | Option Exercise | 2,000 | 19.56 | 39,125 |
| 2007-09-12 | Ingram William P (VP, FAB OPERATIONS) | Sale | 2,500 | 37.23 | 93,074 |
| 2007-09-12 | Ingram William P (VP, FAB OPERATIONS) | Option Exercise | 2,500 | 19.56 | 48,906 |
| 2007-08-22 | Choy Benedict C K (Senior Vice President) | Sale | 5,000 | 34.94 | 174,715 |
| 2007-06-12 | Kapur Dilip (VP, Standard Products) | Sale | 1,000 | 32.50 | 32,500 |
| 2007-06-12 | Kapur Dilip (VP, Standard Products) | Option Exercise | 1,000 | 17.39 | 17,390 |
| 2007-06-05 | Masood Ahmed (VP Marketing) | Option Exercise | 1,000 | 17.39 | 17,390 |
| 2007-06-04 | Tsang Michael (VP, Standard Products) | Sale | 2,000 | 33.92 | 67,841 |
| 2007-06-04 | Tsang Michael (VP, Standard Products) | Option Exercise | 2,000 | 16.50 | 33,010 |
| 2007-05-11 | Choy Benedict C K (Senior Vice President) | Option Exercise | 29,000 | 11.64 | 337,560 |
| 2007-02-26 | Gonzalez Franklin (VP Process Technology) | Sale | 2,000 | 41.55 | 83,105 |
| 2007-02-22 | Choy Benedict C K (Senior Vice President) | Sale | 10,000 | 40.58 | 405,809 |
| 2006-12-07 | Tsang Michael (VP, Standard Products) | Sale | 1,000 | 43.76 | 43,765 |
| 2006-12-07 | Tsang Michael (VP, Standard Products) | Option Exercise | 1,000 | 15.67 | 15,670 |
| 2006-12-04 | Kapur Dilip (VP Standard Products) | Sale | 1,000 | 45.75 | 45,750 |
| 2006-12-04 | Kapur Dilip (VP Standard Products) | Option Exercise | 1,000 | 17.34 | 17,340 |
| 2006-12-01 | Masood Ahmed (VP Marketing) | Sale | 7,000 | 46.48 | 325,389 |
| 2006-12-01 | Masood Ahmed (VP Marketing) | Option Exercise | 7,000 | 20.30 | 142,076 |
| 2006-12-01 | Pao Henry (President and CEO) | Option Exercise | 25,000 | 15.50 | 387,500 |
| 2006-12-01 | Gonzalez Franklin (VP Process Technology) | Option Exercise | 2,000 | 17.34 | 34,680 |
| 2006-11-22 | Choy Benedict C K (Senior Vice President, Technol) | Option Exercise | 7,286 | 47.00 | 342,442 |
| 2006-11-20 | Tsang Michael (VP, Standard Products) | Sale | 1,000 | 47.99 | 47,990 |
| 2006-11-20 | Tsang Michael (VP, Standard Products) | Option Exercise | 1,000 | 15.67 | 15,670 |
| 2006-11-20 | Feng Milton (Director) | Sale | 4,000 | 45.75 | 183,000 |
| 2006-11-20 | Feng Milton (Director) | Option Exercise | 4,000 | 16.44 | 65,780 |
| 2006-11-20 | Ingram William P (V.P. Fab. Operations) | Sale | 2,500 | 47.00 | 117,500 |
| 2006-11-20 | Ingram William P (V.P. Fab. Operations) | Option Exercise | 2,500 | 19.56 | 48,906 |
| 2006-11-15 | Tsang Michael (VP, Standard Products) | Sale | 2,000 | 45.50 | 91,010 |
| 2006-11-15 | Tsang Michael (VP, Standard Products) | Option Exercise | 2,000 | 17.34 | 34,680 |
| 2006-11-14 | Petersen William (VP Worldwide Sales) | Sale | 1,502 | 42.50 | 63,835 |
| 2006-11-07 | Petersen William (VP Worldwide Sales) | Sale | 1,498 | 42.50 | 63,665 |
| 2006-11-07 | Petersen William (VP Worldwide Sales) | Option Exercise | 3,000 | 17.06 | 51,179 |
| 2006-10-31 | Tsang Michael (VP, Standard Products) | Sale | 2,772 | 44.35 | 122,938 |
| 2006-10-31 | Tsang Michael (VP, Standard Products) | Option Exercise | 2,500 | 15.43 | 38,578 |
| 2006-06-06 | Kapur Dilip (V.P. Standard Products) | Sale | 1,000 | 39.00 | 39,000 |
| 2006-06-06 | Kapur Dilip (V.P. Standard Products) | Option Exercise | 1,000 | 17.39 | 17,390 |
| 2006-06-01 | Petersen William (VP Worldwide Sales) | Sale | 13,000 | 40.63 | 528,177 |
| 2006-06-01 | Petersen William (VP Worldwide Sales) | Option Exercise | 13,000 | 14.80 | 192,335 |
| 2006-06-01 | Kapur Dilip (VP Standard Products) | Sale | 2,000 | 40.70 | 81,400 |
| 2006-06-01 | Kapur Dilip (VP Standard Products) | Option Exercise | 2,000 | 13.69 | 27,375 |
| 2006-05-25 | Kapur Dilip (V.P. Standard Products) | Sale | 2,000 | 39.50 | 79,000 |
| 2006-05-25 | Kapur Dilip (V.P. Standard Products) | Option Exercise | 2,000 | 18.45 | 36,902 |
| 2006-03-09 | Lee Michael James (VP I.C. Design) | Option Exercise | 5,000 | 13.50 | 67,500 |
| 2006-02-24 | Lee Michael James (VP I.C. Design) | Option Exercise | 5,000 | 13.50 | 67,500 |
| 2006-02-22 | Gonzalez Franklin (VP Process Technology) | Option Exercise | 2,000 | 17.34 | 34,680 |
| 2006-01-27 | Lee Michael James (VP I.C. Design) | Option Exercise | 5,000 | 19.56 | 97,810 |
| 2006-01-24 | Lee Michael James (VP I.C. Design) | Option Exercise | 2,000 | 17.34 | 34,680 |
| 2005-12-07 | Choy Benedict C K (Senior Vice Presiden) | Sale | 25,000 | 44.94 | 1,123,625 |
| 2005-12-05 | Gonzalez Franklin (VP Process Technolog) | Sale | 8,996 | 43.17 | 388,339 |
| 2005-11-22 | Pao Henry (President and CEO) | Sale | 15,729 | 44.23 | 695,693 |
| 2005-11-18 | Pao Henry (President and CEO) | Sale | 12,300 | 44.28 | 544,644 |
| 2005-11-17 | Siegel Richard E (Executive Vice Presi) | Sale | 10,549 | 43.50 | 458,881 |
| 2005-11-17 | Gonzalez Franklin (VP Process Technolog) | Sale | 1,912 | 42.74 | 81,718 |
| 2005-11-09 | Gonzalez Franklin (VP Process Technolog) | Sale | 10,000 | 40.00 | 400,000 |
| 2005-11-08 | Gonzalez Franklin (VP Process Technolog) | Sale | 31,000 | 38.87 | 1,200,781 |
| 2005-11-02 | Choy Benedict C K (Senior Vice Presiden) | Sale | 10,000 | 37.18 | 371,850 |
| 2005-10-26 | Choy Benedict C K (Senior Vice Presiden) | Sale | 10,000 | 37.16 | 371,629 |
| 2005-10-25 | Siegel Richard E (Executive Vice Presi) | Sale | 27,000 | 36.90 | 996,381 |
| 2005-08-23 | Choy Benedict C K (Senior Vice Presiden) | Sale | 1,000 | 27.75 | 27,750 |
| 2005-08-17 | Choy Benedict C K (Senior Vice Presiden) | Sale | 2,000 | 26.60 | 53,200 |
| 2005-08-01 | Choy Benedict C K (Senior Vice Presiden) | Sale | 2,000 | 27.35 | 54,700 |
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 SUPERTEX INC (symbol SUPX,
CIK number 730000) see
the Securities and Exchange Commission (SEC) website.
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