Insider Trading activities of Natural Gas Services Group Inc insiders.

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Natural Gas Services Group Inc since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Natural Gas Services Group Inc since year 2005. Table 2 shows the detailed insider transactions of Natural Gas Services Group Inc since 2005. The reporting company's ticker symbol is NGS. The reporting company's CIK number is 1084991.
The total value of stock buying since 2005 is $85,926.
The total value of stock sales since 2005 is $21,307,095.
The total value of stock option exercises since 2005 is $1,948,448.


Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Natural Gas Services Group Inc (NGS).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2017-10 0 $0 3,874 $110,718 0 $0
2017-09 0 $0 12,350 $345,999 0 $0
2017-07 0 $0 7,157 $178,853 0 $0
2017-06 0 $0 8,883 $221,309 0 $0
2017-05 0 $0 400 $11,204 0 $0
2017-04 0 $0 2,550 $72,726 0 $0
2017-01 0 $0 19,914 $639,660 19,914 $399,474
2016-12 0 $0 9,100 $301,336 2,500 $34,750
2016-11 0 $0 11,333 $311,477 2,500 $34,750
2016-06 0 $0 6,000 $144,595 0 $0
2016-03 0 $0 15,000 $319,920 15,000 $213,300
2015-12 0 $0 14,500 $294,495 2,500 $42,400
2015-09 0 $0 0 $0 10,000 $189,430
2015-06 0 $0 15,000 $350,403 0 $0
2015-03 0 $0 52,680 $997,813 50,000 $492,050
2013-12 0 $0 5,000 $142,608 0 $0
2013-09 0 $0 20,000 $553,600 0 $0
2013-05 0 $0 20,000 $447,000 0 $0
2013-03 0 $0 5,000 $94,550 0 $0
2012-12 0 $0 20,000 $324,600 0 $0
2012-05 0 $0 7,500 $100,800 7,500 $57,225
2011-08 2,000 $25,032 0 $0 0 $0
2011-01 0 $0 0 $0 1,250 $20,924
2010-12 0 $0 0 $0 32,839 $279,895
2010-10 0 $0 13,640 $241,046 0 $0
2010-06 0 $0 4,500 $75,020 0 $0
2009-12 0 $0 1,360 $24,480 0 $0
2009-06 0 $0 0 $0 3,000 $9,750
2008-11 1,000 $8,770 0 $0 0 $0
2008-09 0 $0 0 $0 3,000 $9,750
2008-06 0 $0 153,356 $4,508,865 0 $0
2008-05 0 $0 35,273 $934,499 0 $0
2008-03 0 $0 11,976 $254,490 0 $0
2008-02 0 $0 2,500 $56,462 0 $0
2007-11 0 $0 2,500 $45,017 0 $0
2007-09 0 $0 2,500 $40,262 0 $0
2007-06 0 $0 0 $0 2,500 $34,750
2007-05 1,500 $22,710 0 $0 0 $0
2006-11 0 $0 0 $0 40,000 $130,000
2006-09 2,350 $29,414 0 $0 0 $0
2006-03 0 $0 160,000 $2,638,397 0 $0
2006-01 0 $0 159,200 $3,111,882 0 $0
2005-12 0 $0 90,800 $2,238,569 0 $0
2005-09 0 $0 41,500 $881,655 0 $0
2005-08 0 $0 15,000 $292,785 0 $0

Table 2. Detailed insider stock purchases, sales, and option exercises of Natural Gas Services Group Inc insiders (NGS)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2017-10-03 Taylor Stephen Charles (CEO) Sale 3,874 28.58 110,718
2017-09-27 Hazlett James R (VP -- Technical Services) Sale 2,543 28.04 71,305
2017-09-26 Hazlett James R (VP -- Technical Services) Sale 9,807 28.01 274,694
2017-07-03 Taylor Stephen Charles (Chief Executive Officer) Sale 7,157 24.99 178,853
2017-06-30 Taylor Stephen Charles (Chief Executive Officer) Sale 4,843 25.00 121,075
2017-06-20 Bradshaw David L (Director) Sale 2,540 23.60 59,944
2017-06-05 Hughes William F Jr (Director) Sale 1,500 26.86 40,290
2017-05-02 Hazlett James R (VP - Technical Services) Sale 400 28.01 11,204
2017-04-11 Hazlett James R (VP -- Technical Services) Sale 2,550 28.52 72,726
2017-01-11 Taylor Stephen Charles (Chief Executive Officer) Option Ex 19,914 20.06 399,474
2017-01-05 Taylor Stephen Charles (Chief Executive Officer) Sale 7,888 31.96 252,139
2017-01-04 Taylor Stephen Charles (Chief Executive Officer) Sale 6,052 32.02 193,785
2017-01-03 Taylor Stephen Charles (Chief Executive Officer) Sale 5,974 32.43 193,736
2016-12-29 Chisholm John (Director) Sale 1,100 31.76 34,936
2016-12-29 Chisholm John (Director) Option Ex 2,500 13.90 34,750
2016-12-09 Curtis Charles G (Director) Sale 8,000 33.30 266,400
2016-11-22 Hazlett James R (VP - Technical Services) Sale 3,333 28.67 95,557
2016-11-17 Lawrence G Larry (Chief Financial Officer) Sale 8,000 26.99 215,920
2016-11-11 Curtis Charles G (Director) Option Ex 2,500 13.90 34,750
2016-06-23 Hazlett James R (VP -- Technical Services) Sale 3,500 23.92 83,720
2016-06-23 Bradshaw David L (Director) Sale 2,500 24.35 60,875
2016-03-22 Taylor Stephen Charles (President and CEO) Sale 15,000 21.33 319,920
2016-03-22 Taylor Stephen Charles (President and CEO) Option Ex 15,000 14.22 213,300
2015-12-21 Hazlett James R (Vice President-Technical Svcs.) Sale 1,500 20.87 31,305
2015-12-18 Lawrence G Larry (Chief Financial Officer) Sale 8,000 20.34 162,720
2015-12-18 Hazlett James R (Vice President-Technical Svcs.) Sale 2,000 20.31 40,620
2015-12-17 Hazlett James R (Vice President-Technical Svcs.) Sale 1,000 20.03 20,030
2015-12-16 Hazlett James R (Vice President-Technical Svcs.) Sale 1,000 19.81 19,810
2015-12-15 Hazlett James R (Vice President-Technical Svcs.) Sale 1,000 20.01 20,010
2015-12-04 Curtis Charles G (Director) Option Ex 2,500 16.96 42,400
2015-09-14 Hughes William F Jr (Director) Option Ex 10,000 18.94 189,430
2015-06-30 Hazlett James R (Vice President-Technical Svcs.) Sale 2,500 22.00 55,000
2015-06-19 Hazlett James R (Vice President-Technical Svcs.) Sale 2,500 23.32 58,300
2015-06-17 Hazlett James R (Vice President-Technical Svcs.) Sale 3,372 23.20 78,230
2015-06-10 Hazlett James R (Vice President-Technical Svcs.) Sale 6,628 23.97 158,873
2015-03-31 Taylor Stephen Charles (President and CEO) Sale 4,000 19.27 77,080
2015-03-30 Taylor Stephen Charles (President and CEO) Sale 2,115 19.07 40,333
2015-03-27 Taylor Stephen Charles (President and CEO) Sale 1,000 19.00 19,000
2015-03-24 Lawrence G Larry (Chief Financial Officer) Sale 10,000 19.95 199,500
2015-03-24 Taylor Stephen Charles (President and CEO) Sale 2,309 20.06 46,318
2015-03-20 Taylor Stephen Charles (President and CEO) Sale 5,000 19.53 97,650
2015-03-19 Hughes William F Jr (Director) Option Ex 5,000 15.43 77,150
2015-03-18 Taylor Stephen Charles (President and CEO) Sale 28,256 18.33 517,932
2015-03-18 Taylor Stephen Charles (President and CEO) Option Ex 45,000 9.22 414,900
2013-12-06 Hazlett James R (Vice President-Technical Svcs.) Sale 4,164 28.50 118,674
2013-12-05 Hazlett James R (Vice President-Technical Svcs.) Sale 836 28.63 23,934
2013-09-05 Hughes William F Jr (Director) Sale 20,000 27.68 553,600
2013-05-14 Hughes William F Jr (Director) Sale 20,000 22.35 447,000
2013-03-18 Hazlett James R (Vice President-Technical Svcs.) Sale 5,000 18.91 94,550
2012-12-03 Hughes William F Jr (Director) Sale 20,000 16.23 324,600
2012-05-22 Hughes William F Jr (Director) Sale 7,500 13.44 100,800
2012-05-21 Hughes William F Jr (Director) Option Ex 7,500 7.63 57,225
2011-08-23 Huseman Kenneth V (Director) Buy 2,000 12.52 25,032
2011-01-06 Yadon Richard L (Director) Option Ex 1,250 16.74 20,924
2010-12-28 Wait Earl R (VP/Accounting; Treasurer) Option Ex 9,000 3.25 29,250
2010-12-14 Hazlett James R (Vice President-Technical Svcs.) Option Ex 7,589 7.84 59,497
2010-12-14 Yadon Richard L (Director) Option Ex 16,250 11.76 191,148
2010-10-13 Wait Earl R (VP/Accounting; Treasurer) Sale 13,640 17.67 241,046
2010-06-15 Wait Earl R (VP/Accounting; Treasurer) Sale 2,000 17.16 34,320
2010-06-11 Wait Earl R (VP/Accounting; Treasurer) Sale 2,500 16.28 40,700
2009-12-15 Wait Earl R (VP/Accounting; Treasurer) Sale 1,360 18.00 24,480
2009-06-08 Wait Earl R (VP/Accounting; Treasurer) Option Ex 3,000 3.25 9,750
2008-11-26 Strasheim Gene A (Director) Buy 1,000 8.77 8,770
2008-09-12 Wait Earl R (VP/Accounting; Treasurer) Option Ex 3,000 3.25 9,750
2008-06-13 Wait Earl R (VP - Accounting and Treasurer) Sale 5,000 30.00 150,010
2008-06-09 Hazlett James R (VP - Technical Services) Sale 10,000 30.61 306,140
2008-06-09 Hensley Paul D (Director) Sale 40,000 29.83 1,189,573
2008-06-09 Yadon Richard L (Director) Sale 20,000 30.00 600,000
2008-06-06 Hensley Paul D (Director) Sale 13,834 28.56 395,099
2008-06-05 Hensley Paul D (Director) Sale 22,995 28.12 646,527
2008-06-03 Hazlett James R (VP - Technical Services) Sale 6,677 28.05 187,256
2008-06-02 Hazlett James R (VP - Technical Services) Sale 550 28.02 15,413
2008-05-30 Hazlett James R (VP - Technical Services) Sale 2,773 27.77 77,006
2008-05-12 Hughes William F Jr (Director) Sale 12,000 26.43 317,196
2008-05-12 Curtis Charles G (Director) Sale 2,000 26.54 53,082
2008-05-09 Hughes William F Jr (Director) Sale 8,000 26.34 210,704
2008-05-09 Wait Earl R (VP - Accounting and Treasurer) Sale 2,500 26.32 65,807
2008-05-09 Curtis Charles G (Director) Sale 8,000 26.34 210,704
2008-03-14 Hazlett James R (VP - Technical Services) Sale 11,976 21.25 254,490
2008-02-26 Wait Earl R (VP - Accounting and Treasurer) Sale 2,500 22.59 56,462
2007-11-13 Wait Earl R (VP - Accounting and Treasurer) Sale 2,500 18.01 45,017
2007-09-14 Wait Earl R (VP - Accounting and Treasurer) Sale 2,500 16.11 40,262
2007-06-06 Baker Alan A (Director) Option Ex 2,500 13.90 34,750
2007-05-15 Strasheim Gene A (Director) Buy 1,500 15.14 22,710
2006-11-21 Curtis Charles G (Director) Option Ex 40,000 3.25 130,000
2006-09-15 Hazlett James R (VP - Technical Services) Buy 1,000 12.55 12,548
2006-09-15 Taylor Stephen Charles (President and CEO) Buy 1,000 12.49 12,495
2006-09-15 Wait Earl R (VP - Accounting & Treasurer) Buy 350 12.49 4,371
2006-03-08 Hazlett James R (VP Technical Services) Sale 10,000 16.49 164,899
2006-03-08 Hensley Paul D (Director) Sale 100,000 16.49 1,648,999
2006-03-08 Hughes William F Jr (Director) Sale 50,000 16.49 824,499
2006-01-19 Mark X Energy Co (10% Owner) Sale 159,200 19.55 3,111,882
2005-12-09 Mark X Energy Co (10% Owner) Sale 800 24.01 19,209
2005-12-08 Mark X Energy Co (10% Owner) Sale 20,000 24.00 480,000
2005-12-06 Mark X Energy Co (10% Owner) Sale 70,000 24.85 1,739,360
2005-09-12 Yadon Richard L (Director) Sale 10,000 23.39 233,880
2005-09-06 Wait Earl R (Treasurer) Sale 30,000 20.53 615,900
2005-09-01 Sparkman Scott W (Secretary) Sale 1,500 21.25 31,875
2005-08-31 Yadon Richard L (Director) Sale 15,000 19.52 292,785

Insider trading activities including stock purchases, stock sales, and option exercises of NGS listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Natural Gas Services Group Inc (symbol NGS, CIK number 1084991) see the Securities and Exchange Commission (SEC) website.