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Insider Trading: CombiMatrix Corp

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of CombiMatrix Corp since year 2005 are given in the first table. The second table lists detailed insider transactions reported by CombiMatrix Corp since 2005. The reporting company's ticker symbol is CBMX. The reporting company's CIK number is 1383183. The total value of stock buying during this period is $168,330. The total value of stock sales is $286,056. The total value of stock exercises is $0.

Figure 1. Monthly insider transaction values at CombiMatrix Corp (CBMX) 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.

  • 06

  • 07

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  • 12

  • 01 2007

  • 02

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  • 01 2008

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  • 03

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  • $286,056

    $28,605

    $2,860

    $286

  • Buy
  • Sale
  • Option Exercise

Figure 2. Average prices of insider buys, sales, and option exercises at CombiMatrix Corp (CBMX) in the past 24 months. See table 2 for insider transaction details.

  • 06

  • 07

  • 08

  • 09

  • 10

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  • 12

  • 01 2007

  • 02

  • 03

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  • 01 2008

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  • $9.19

    $6.90

    $4.60

    $2.30



Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for CombiMatrix Corp (CBMX).
Trading Period
year-month  
Insider Buying     
Shares               Value ($)
Insider Sales     
Shares               Value ($)
Option Exercises     
Shares               Value ($)
2008-03 6,000 54,730 0 0 0 0
2007-12 3,000 21,170 0 0 0 0
2007-11 14,000 92,430 0 0 0 0
2007-01 0 0 366,800 286,056 0 0

Table 2. Detailed insider stock purchases, sales, and option exercises for CombiMatrix Corp (CBMX)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2008-03-20 Kumar Amit (PRESIDENT AND CEO) Purchase 500 9.52 4,760
2008-03-14 Kumar Amit (PRESIDENT AND CEO) Purchase 1,500 9.08 13,627
2008-03-12 Kumar Amit (PRESIDENT AND CEO) Purchase 2,000 9.03 18,053
2008-03-11 Kumar Amit (PRESIDENT AND CEO) Purchase 2,000 9.14 18,290
2007-12-14 Kumar Amit (PRESIDENT AND CEO) Purchase 1,000 7.11 7,110
2007-12-13 Kumar Amit (PRESIDENT AND CEO) Purchase 2,000 7.03 14,060
2007-11-09 Kumar Amit (PRESIDENT AND CEO) Purchase 1,000 6.71 6,710
2007-11-08 Kumar Amit (PRESIDENT AND CEO) Purchase 3,000 6.75 20,255
2007-11-07 Kumar Amit (PRESIDENT AND CEO) Purchase 1,000 6.65 6,650
2007-11-05 Kumar Amit (PRESIDENT AND CEO) Purchase 3,000 6.62 19,845
2007-11-02 Kumar Amit (PRESIDENT AND CEO) Purchase 6,000 6.50 38,970
2007-01-29 Marxe Austin W & Greenhouse David M (10% Owner) Sale 57,500 .74 42,745
2007-01-26 Marxe Austin W & Greenhouse David M (10% Owner) Sale 54,000 .76 41,288
2007-01-25 Marxe Austin W & Greenhouse David M (10% Owner) Sale 105,000 .78 81,700
2007-01-24 Marxe Austin W & Greenhouse David M (10% Owner) Sale 100,300 .80 79,823
2007-01-23 Marxe Austin W & Greenhouse David M (10% Owner) Sale 50,000 .81 40,500

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 CombiMatrix Corp (symbol CBMX, CIK number 1383183) see the Securities and Exchange Commission (SEC) website.

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