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Insider Trading: Great Lakes Dredge & Dock Corp

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Great Lakes Dredge & Dock Corp in the last 24 months are illustrated in figures 1 and 2. Table 1 shows the monthly insider trading data of Great Lakes Dredge & Dock Corp since year 2005. Table 2 shows the detailed insider transactions of Great Lakes Dredge & Dock Corp since 2005. The reporting company's ticker symbol is GLDD. The reporting company's CIK number is 1372020.
1 year chart,   5 day chart,   1 day chart.

The total value of stock buying since 2005 is $21,231,125. The total value of stock sales is $270,146,359. The total value of stock exercises is $0.


Figure 1. Monthly insider transaction values at Great Lakes Dredge & Dock Corp (GLDD) 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

  • $269,041k

    $26,904k

    $2,690k

    $269k

  • Buy
  • Sale
  • Option Exercise

Figure 2. Average prices of insider buys, sales, and option exercises at Great Lakes Dredge & Dock Corp (GLDD) 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

  • $8.92

    $6.69

    $4.46

    $2.23



Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Great Lakes Dredge & Dock Corp (GLDD).
Trading Period
year-month  
Insider Buying     
Shares               Value ($)
Insider Sales     
Shares               Value ($)
Option Exercises     
Shares               Value ($)
2008-06 0 0 13,000 79,600 0 0
2008-05 0 0 5,000 27,550 0 0
2007-12 90 585 30,000 262,800 0 0
2007-11 0 0 35,000 297,300 0 0
2007-08 0 0 38,161,886 269,041,296 0 0
2007-07 4,246,108 21,230,540 38,500 343,314 0 0
2007-03 0 0 14,000 94,499 0 0

Table 2. Detailed insider stock purchases, sales, and option exercises for Great Lakes Dredge & Dock Corp (GLDD)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2008-06-30 Wensel Deborah A (Senior VP & CFO) Sale 8,000 6.25 50,000
2008-06-16 Mackie Douglas B (President & CEO) Sale 5,000 5.92 29,600
2008-05-15 Mackie Douglas B (President & CEO) Sale 5,000 5.51 27,550
2007-12-27 Gillespie Christopher J (V.P. International Operation) Purchase 90 6.50 585
2007-12-05 Wensel Deborah A (Senior VP and CFO) Sale 10,000 8.90 89,000
2007-12-03 Mackie Douglas B (President and CEO) Sale 20,000 8.69 173,800
2007-11-21 Mackie Douglas B (President and CEO) Sale 5,000 8.46 42,300
2007-11-14 Mackie Douglas B (President and CEO) Sale 19,522 8.50 165,937
2007-11-12 Mackie Douglas B (President and CEO) Sale 478 8.50 4,063
2007-11-09 Wensel Deborah A (Senior VP and CFO) Sale 10,000 8.50 85,000
2007-08-01 Wensel Deborah A (Senior VP and CFO) Sale 60,000 7.05 423,000
2007-08-01 Gillespie Christopher J (V.P. - International Operation) Sale 5,000 7.05 35,250
2007-08-01 Pagendarm William F (V.P. - Division Manager) Sale 23,000 7.05 162,150
2007-08-01 Lowry Richard M (Executive VP and COO) Sale 85,000 7.05 599,250
2007-08-01 Mackie Douglas B (President and CEO) Sale 10,500 7.05 74,025
2007-08-01 Weiss Jason (Director) Sale 600,000 7.05 4,230,000
2007-08-01 Grissom Douglas C (Director) Sale 12,459,462 7.05 87,839,207
2007-08-01 Souleles Thomas S (Director) Sale 12,459,462 7.05 87,839,207
2007-08-01 Madison Dearborn Partners Llc (10% Owner) Sale 12,459,462 7.05 87,839,207
2007-07-20 Auerbach Jonathan A G (10% Owner) Purchase 4,246,108 5.00 21,230,540
2007-07-16 Becker Steven W (Plant Equip Mgr and CME) Sale 15,000 8.97 134,520
2007-07-13 Gillespie Christopher J (VP - International Operations) Sale 5,000 8.90 44,525
2007-07-13 Hansen Bradley T.j. (V.P. - Division Manager) Sale 4,000 9.09 36,355
2007-07-12 Hansen Bradley T.j. (V.P. - Division Manager) Sale 6,000 8.77 52,643
2007-07-11 Hansen Bradley T.j. (Vice President - Division Mgr) Sale 6,500 8.81 57,271
2007-07-10 Hansen Bradley T.j. (Vice President - Division Mgr) Sale 2,000 9.00 18,000
2007-03-30 Karas John F (V.P & Chief Estimator) Sale 13,770 6.75 92,947
2007-03-28 Karas John F (Vice Pres. - Chief Estimator) Sale 130 6.75 877
2007-03-27 Karas John F (Vice Pres. - Chief Estimator) Sale 100 6.75 675

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 Great Lakes Dredge & Dock Corp (symbol GLDD, CIK number 1372020) see the Securities and Exchange Commission (SEC) website.

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