Insider Trading activities of Gentex Corp insiders.

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Gentex Corp since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Gentex Corp since year 2005. Table 2 shows the detailed insider transactions of Gentex Corp since 2005. The reporting company's ticker symbol is GNTX. The reporting company's CIK number is 355811.
The total value of stock buying since 2005 is $0.
The total value of stock sales since 2005 is $162,628,342.
The total value of stock option exercises since 2005 is $41,347,360.


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Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Gentex Corp (GNTX).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2017-09 0 $0 12,320 $242,679 0 $0
2017-08 0 $0 239,400 $4,148,562 239,400 $2,182,131
2017-06 0 $0 10,000 $192,160 0 $0
2017-04 0 $0 35,610 $734,271 35,610 $533,779
2017-03 0 $0 10,000 $212,760 0 $0
2017-01 0 $0 26,720 $557,240 26,720 $306,930
2016-11 0 $0 2,244 $40,396 2,244 $22,698
2016-10 0 $0 18,210 $304,930 18,210 $182,580
2016-08 0 $0 716,000 $12,910,936 0 $0
2016-07 0 $0 44,364 $780,878 43,958 $491,218
2016-06 0 $0 620,140 $10,193,277 230,140 $1,679,161
2015-12 0 $0 2,000 $32,624 0 $0
2015-11 0 $0 806,184 $13,255,057 38,184 $435,755
2015-10 0 $0 29,420 $478,541 29,420 $295,738
2015-07 0 $0 0 $0 216,000 $1,738,800
2015-05 0 $0 6,300 $110,054 11,520 $132,398
2015-04 0 $0 15,140 $274,185 15,140 $200,135
2015-03 0 $0 4,000 $73,412 0 $0
2015-02 0 $0 79,204 $1,365,069 79,204 $882,145
2014-11 0 $0 112,500 $3,680,837 0 $0
2014-10 0 $0 457,100 $14,934,221 35,600 $711,437
2014-09 0 $0 23,382 $635,612 9,382 $172,957
2014-08 0 $0 4,256 $125,837 0 $0
2014-07 0 $0 14,848 $431,643 117,848 $2,466,759
2014-06 0 $0 4,563 $134,530 4,563 $75,226
2014-05 0 $0 8,478 $251,817 8,478 $163,143
2014-04 0 $0 34,674 $994,380 34,674 $626,247
2014-02 0 $0 17,500 $545,358 17,500 $390,640
2013-12 0 $0 4,130 $124,498 4,130 $65,460
2013-11 0 $0 2,000 $59,640 2,000 $31,700
2013-10 0 $0 20,500 $617,016 21,000 $400,020
2013-09 0 $0 648 $16,240 648 $9,266
2013-08 0 $0 0 $0 12,000 $226,500
2013-07 0 $0 10,986 $244,306 98,000 $1,324,960
2013-06 0 $0 2,600 $59,800 0 $0
2013-05 0 $0 449,453 $11,008,569 30,821 $459,050
2013-04 0 $0 3,355 $73,992 3,505 $53,996
2012-12 0 $0 8,000 $148,792 0 $0
2012-09 0 $0 0 $0 1,600 $22,976
2012-05 0 $0 7,237 $166,993 7,237 $72,080
2012-03 0 $0 10,800 $266,004 0 $0
2011-12 0 $0 28,436 $856,377 25,936 $396,384
2011-10 0 $0 12,000 $368,820 12,000 $191,100
2011-05 0 $0 70,215 $2,205,708 29,115 $360,903
2011-02 0 $0 93,126 $2,927,081 93,126 $1,567,166
2011-01 0 $0 13,150 $417,828 0 $0
2010-12 0 $0 736,953 $20,956,218 226,140 $4,092,419
2010-11 0 $0 56,090 $1,221,425 28,078 $501,850
2010-10 0 $0 0 $0 2,000 $28,500
2010-08 0 $0 0 $0 180,000 $3,007,800
2010-05 0 $0 23,212 $509,596 33,212 $513,567
2010-04 0 $0 224,042 $4,932,835 49,475 $787,227
2010-03 0 $0 202,445 $4,142,326 15,000 $210,000
2010-02 0 $0 1,076,064 $20,389,307 61,460 $835,111
2009-12 0 $0 19,360 $351,743 17,860 $316,211
2009-06 0 $0 3,000 $40,650 0 $0
2008-08 0 $0 10,000 $161,900 160,000 $2,320,800
2008-05 0 $0 4,000 $76,224 20,000 $174,680
2007-10 0 $0 29,280 $626,299 29,280 $375,369
2007-07 0 $0 13,625 $287,442 160,352 $2,115,479
2007-06 0 $0 119,331 $2,367,158 107,706 $1,777,392
2007-05 0 $0 79,870 $1,488,235 65,870 $865,223
2007-04 0 $0 61,520 $1,104,680 61,520 $728,272
2007-02 0 $0 591,304 $10,414,961 0 $0
2007-01 0 $0 15,642 $268,416 15,642 $201,875
2006-12 0 $0 10,000 $160,460 0 $0
2006-09 0 $0 5,800 $86,443 0 $0
2006-08 0 $0 47,064 $628,457 177,064 $1,797,088
2006-05 0 $0 45,800 $684,632 40,000 $183,720
2006-03 0 $0 85,852 $1,457,698 72,740 $827,757
2005-12 0 $0 84,040 $1,634,036 55,040 $815,582
2005-09 0 $0 50,000 $852,327 0 $0
2005-08 0 $0 34,000 $581,944 0 $0

Table 2. Detailed insider stock purchases, sales, and option exercises of Gentex Corp insiders (GNTX)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2017-09-27 Downing Steven R (Chief Financial Officer) Sale 8,000 19.70 157,584
2017-09-27 Nash Kevin C (Chief Accounting Officer) Sale 4,320 19.70 85,095
2017-08-07 Bauer Fred (Chairman of the Board & CEO) Sale 239,400 17.33 4,148,562
2017-08-07 Bauer Fred (Chairman of the Board & CEO) Option Ex 239,400 9.12 2,182,131
2017-06-01 Mulder John A Sale 10,000 19.22 192,160
2017-04-27 Sotok Frederick A Sale 19,000 20.84 396,017
2017-04-27 Sotok Frederick A Option Ex 19,000 16.66 316,502
2017-04-25 Nash Kevin C (Chief Accounting Officer) Sale 1,694 20.65 34,987
2017-04-25 Nash Kevin C (Chief Accounting Officer) Option Ex 1,694 14.70 24,901
2017-04-24 Ryan Scott P (General Counsel) Sale 4,920 20.38 100,259
2017-04-24 Ryan Scott P (General Counsel) Option Ex 4,920 9.38 46,125
2017-04-24 Matthews Joseph E Iv (Vice President Purchasing) Sale 9,996 20.31 203,008
2017-04-24 Matthews Joseph E Iv (Vice President Purchasing) Option Ex 9,996 14.63 146,251
2017-03-30 Mulder John A Sale 10,000 21.28 212,760
2017-01-31 Downing Steven R (Chief Financial Officer) Sale 10,176 20.75 211,111
2017-01-31 Downing Steven R (Chief Financial Officer) Option Ex 10,176 12.31 125,266
2017-01-30 Nash Kevin C (Chief Accounting Officer) Sale 4,544 20.90 94,969
2017-01-30 Nash Kevin C (Chief Accounting Officer) Option Ex 4,544 14.44 65,624
2017-01-30 Sotok Frederick A Sale 12,000 20.93 251,160
2017-01-30 Sotok Frederick A Option Ex 12,000 9.67 116,040
2016-11-18 Matthews Joseph E Iv (Vice President Purchasing) Sale 2,244 18.00 40,396
2016-11-18 Matthews Joseph E Iv (Vice President Purchasing) Option Ex 2,244 10.12 22,698
2016-10-25 Nash Kevin C (Chief Accounting Officer) Sale 6,210 16.68 103,582
2016-10-25 Nash Kevin C (Chief Accounting Officer) Option Ex 6,210 10.71 66,540
2016-10-25 Wallace James H Sale 12,000 16.78 201,348
2016-10-25 Wallace James H Option Ex 12,000 9.67 116,040
2016-08-22 Bauer Fred (Chairman of the Board & CEO) Sale 45,039 18.02 811,827
2016-08-19 Bauer Fred (Chairman of the Board & CEO) Sale 434,961 18.04 7,848,001
2016-08-18 Bauer Fred (Chairman of the Board & CEO) Sale 216,000 18.01 3,889,728
2016-08-10 Mulder John A Sale 20,000 18.07 361,380
2016-07-26 Ryan Scott P (General Counsel) Sale 5,132 17.68 90,713
2016-07-26 Ryan Scott P (General Counsel) Option Ex 4,726 14.96 70,700
2016-07-25 Downing Steven R (Chief Financial Officer) Sale 8,820 17.62 155,381
2016-07-25 Downing Steven R (Chief Financial Officer) Option Ex 8,820 12.48 110,073
2016-07-25 Nash Kevin C (Chief Accounting Officer) Sale 6,412 17.63 113,056
2016-07-25 Nash Kevin C (Chief Accounting Officer) Option Ex 6,412 13.09 83,933
2016-07-25 Goode Gary F Sale 24,000 17.57 421,728
2016-07-25 Goode Gary F Option Ex 24,000 9.44 226,512
2016-06-24 Bauer Fred (Chairman of the Board & CEO) Option Ex 228,000 7.25 1,653,000
2016-06-08 Bauer Fred (Chairman of the Board & CEO) Sale 75,000 16.44 1,233,150
2016-06-07 Bauer Fred (Chairman of the Board & CEO) Sale 276,700 16.45 4,553,098
2016-06-06 Bauer Fred (Chairman of the Board & CEO) Sale 238,200 16.42 3,910,767
2016-06-03 Bauer Fred (Chairman of the Board & CEO) Sale 28,100 16.40 460,952
2016-06-01 Matthews Joseph E Iv (Vice President Purchasing) Sale 2,140 16.50 35,310
2016-06-01 Matthews Joseph E Iv (Vice President Purchasing) Option Ex 2,140 12.22 26,161
2015-12-28 Ryan Scott P (General Counsel) Sale 2,000 16.31 32,624
2015-11-10 Bauer Fred (Chairman of the Board & CEO) Sale 762,000 16.43 12,520,422
2015-11-05 Mulder John A (Director) Sale 4,600 16.60 76,360
2015-11-04 Mulder John A (Director) Sale 1,400 16.63 23,276
2015-11-02 Newton Mark W (Senior Vice President) Sale 38,184 16.63 634,999
2015-11-02 Newton Mark W (Senior Vice President) Option Ex 38,184 11.41 435,755
2015-10-28 Ryan Scott P (General Counsel) Sale 3,000 16.36 49,074
2015-10-28 Ryan Scott P (General Counsel) Option Ex 3,000 14.73 44,190
2015-10-27 Nash Kevin C (Chief Accounting Officer) Sale 7,620 16.23 123,680
2015-10-27 Nash Kevin C (Chief Accounting Officer) Option Ex 7,620 11.30 86,128
2015-10-26 Nash Kevin C (Chief Accounting Officer) Sale 6,800 16.40 111,519
2015-10-26 Nash Kevin C (Chief Accounting Officer) Option Ex 6,800 11.30 76,860
2015-10-23 Goode Gary F (Director) Sale 12,000 16.19 194,268
2015-10-23 Goode Gary F (Director) Option Ex 12,000 7.38 88,560
2015-07-31 Bauer Fred (Chairman of the Board & CEO) Option Ex 216,000 8.05 1,738,800
2015-05-12 Downing Steven R (Chief Financial Officer) Sale 6,300 17.47 110,054
2015-05-12 Downing Steven R (Chief Financial Officer) Option Ex 6,300 9.76 61,506
2015-05-06 Nash Kevin C (Chief Accounting Officer) Option Ex 5,220 13.58 70,892
2015-04-23 Matthews Joseph E Iv (VIce President Purchasing) Sale 15,140 18.11 274,185
2015-04-23 Matthews Joseph E Iv (VIce President Purchasing) Option Ex 15,140 13.22 200,135
2015-03-31 Matthews Joseph E Iv (VIce President Purchasing) Sale 4,000 18.35 73,412
2015-02-06 Mulder John A (Director) Sale 12,000 17.25 207,048
2015-02-06 Mulder John A (Director) Option Ex 12,000 12.37 148,380
2015-02-03 Newton Mark W (Senior Vice President) Sale 34,204 17.36 593,815
2015-02-03 Newton Mark W (Senior Vice President) Option Ex 34,204 10.16 347,512
2015-02-03 Sotok Frederick A (Director) Sale 21,000 17.28 362,943
2015-02-03 Sotok Frederick A (Director) Option Ex 21,000 13.33 279,993
2015-02-02 Goode Gary F (Director) Sale 12,000 16.77 201,263
2015-02-02 Goode Gary F (Director) Option Ex 12,000 8.86 106,260
2014-11-04 Bauer Fred (Chairman of the Board & CEO) Sale 50,000 32.60 1,629,900
2014-11-03 Bauer Fred (Chairman of the Board & CEO) Sale 62,500 32.81 2,050,937
2014-10-31 Bauer Fred (Chairman of the Board & CEO) Sale 421,500 32.80 13,826,464
2014-10-24 Matthews Joseph E Iv (VIce President Purchasing) Sale 1,070 31.72 33,940
2014-10-24 Matthews Joseph E Iv (VIce President Purchasing) Option Ex 1,070 24.45 26,161
2014-10-23 Los Bruce A (Senior Vice President) Sale 22,530 31.11 700,953
2014-10-23 Los Bruce A (Senior Vice President) Option Ex 22,530 22.56 508,276
2014-10-23 Wallace James H (Director) Sale 12,000 31.07 372,864
2014-10-23 Wallace James H (Director) Option Ex 12,000 14.75 177,000
2014-09-30 Los Bruce A (Senior Vice President) Sale 9,382 26.92 252,572
2014-09-30 Los Bruce A (Senior Vice President) Option Ex 9,382 18.43 172,957
2014-09-29 Downing Steven R (Chief Financial Officer) Sale 2,000 27.36 54,720
2014-09-29 Nash Kevin C (Chief Accounting Officer) Sale 1,800 27.36 49,248
2014-09-29 Newton Mark W (Senior Vice President) Sale 10,200 27.36 279,072
2014-08-27 Mulder John A (Director) Sale 4,256 29.57 125,837
2014-07-29 Los Bruce A (Senior Vice President) Sale 8,848 29.11 257,547
2014-07-29 Los Bruce A (Senior Vice President) Option Ex 8,848 18.03 159,529
2014-07-29 Bauer Fred (Chairman of the Board & CEO) Option Ex 103,000 21.17 2,180,510
2014-07-28 Sotok Frederick A (Director) Sale 6,000 29.02 174,096
2014-07-28 Sotok Frederick A (Director) Option Ex 6,000 21.12 126,720
2014-06-25 Flynn Paul V (Vice President, Operations) Sale 1,163 29.10 33,843
2014-06-25 Flynn Paul V (Vice President, Operations) Option Ex 1,163 11.71 13,618
2014-06-06 Los Bruce A (Senior Vice President) Sale 3,400 29.61 100,687
2014-06-06 Los Bruce A (Senior Vice President) Option Ex 3,400 18.12 61,608
2014-05-05 Nash Kevin C (Chief Accounting Officer) Sale 1,740 29.96 52,130
2014-05-05 Nash Kevin C (Chief Accounting Officer) Option Ex 1,740 24.96 43,430
2014-05-02 Downing Steven R (Chief Financial Officer) Sale 1,750 29.68 51,943
2014-05-02 Downing Steven R (Chief Financial Officer) Option Ex 1,750 14.25 24,937
2014-05-02 Nash Kevin C (Chief Accounting Officer) Sale 4,988 29.62 147,744
2014-05-02 Nash Kevin C (Chief Accounting Officer) Option Ex 4,988 19.00 94,776
2014-04-30 Newton Mark W (Senior Vice President) Sale 34,674 28.68 994,380
2014-04-30 Newton Mark W (Senior Vice President) Option Ex 34,674 18.06 626,247
2014-02-11 Mulder John A (Director) Sale 6,000 31.51 189,066
2014-02-10 Mulder John A (Director) Sale 6,000 31.36 188,130
2014-02-06 Mulder John A (Director) Option Ex 12,000 21.75 261,060
2014-02-05 Sotok Frederick A (Director) Sale 5,500 30.57 168,162
2014-02-05 Sotok Frederick A (Director) Option Ex 5,500 23.56 129,580
2013-12-12 Los Bruce A (Senior Vice President) Sale 4,130 30.14 124,498
2013-12-12 Los Bruce A (Senior Vice President) Option Ex 4,130 15.85 65,460
2013-11-26 Los Bruce A (Senior Vice President) Sale 2,000 29.82 59,640
2013-11-26 Los Bruce A (Senior Vice President) Option Ex 2,000 15.85 31,700
2013-10-30 Goode Gary F (Director) Sale 12,000 30.14 361,668
2013-10-30 Goode Gary F (Director) Option Ex 12,000 18.04 216,420
2013-10-30 Sotok Frederick A (Director) Sale 8,500 30.04 255,348
2013-10-30 Sotok Frederick A (Director) Option Ex 9,000 20.40 183,600
2013-09-16 Downing Steven R (Chief Financial Officer) Sale 648 25.06 16,240
2013-09-16 Downing Steven R (Chief Financial Officer) Option Ex 648 14.30 9,266
2013-08-08 Tsuha Wallace K Jr (Director) Option Ex 12,000 18.88 226,500
2013-07-29 Dykman Steven A (VP Finance & Treasurer) Sale 10,986 22.24 244,306
2013-07-26 Bauer Fred (Chairman of the Board & CEO) Option Ex 98,000 13.52 1,324,960
2013-06-28 Flynn Paul V (Vice President, Operations) Sale 2,600 23.00 59,800
2013-05-24 Dykman Steven A (VP Finance & Treasurer) Sale 13,476 23.68 319,111
2013-05-24 Dykman Steven A (VP Finance & Treasurer) Option Ex 13,476 14.82 199,673
2013-05-08 Flynn Paul V (Vice President, Operations) Sale 2,325 24.56 57,095
2013-05-08 Flynn Paul V (Vice President, Operations) Option Ex 2,325 11.71 27,225
2013-05-08 Newton Mark W (Senior Vice President) Sale 3,840 24.37 93,580
2013-05-08 Newton Mark W (Senior Vice President) Option Ex 3,840 19.59 75,225
2013-05-08 Dykman Steven A (VP Finance & Treasurer) Sale 7,680 24.50 188,167
2013-05-08 Dykman Steven A (VP Finance & Treasurer) Option Ex 7,680 13.21 101,452
2013-05-08 Bauer Fred (Chairman of the Board & CEO) Sale 418,632 24.52 10,266,112
2013-05-06 Los Bruce A (Senior Vice President) Sale 3,500 24.14 84,504
2013-05-06 Los Bruce A (Senior Vice President) Option Ex 3,500 15.85 55,475
2013-04-30 Flynn Paul V (Vice President, Operations) Sale 955 22.21 21,207
2013-04-30 Flynn Paul V (Vice President, Operations) Option Ex 1,105 14.44 15,956
2013-04-25 Dykman Steven A (VP Finance & Treasurer) Sale 2,400 21.99 52,785
2013-04-25 Dykman Steven A (VP Finance & Treasurer) Option Ex 2,400 15.85 38,040
2012-12-21 Mulder John A (Director) Sale 8,000 18.60 148,792
2012-09-13 Newton Mark W (Senior Vice President) Option Ex 1,600 14.36 22,976
2012-05-10 Jen Enoch C (Vice President) Sale 7,237 23.07 166,993
2012-05-10 Jen Enoch C (Vice President) Option Ex 7,237 9.96 72,080
2012-03-30 Jen Enoch C (Vice President) Sale 10,800 24.63 266,004
2011-12-29 Arnold John W (VP of Operations Auto Products) Sale 2,928 29.34 85,895
2011-12-29 Arnold John W (VP of Operations Auto Products) Option Ex 2,928 18.03 52,791
2011-12-27 Arnold John W (VP of Operations Auto Products) Sale 7,968 29.70 236,649
2011-12-27 Arnold John W (VP of Operations Auto Products) Option Ex 7,968 14.09 112,269
2011-12-22 Dykman Steven A (VP Finance & Treasurer) Sale 2,500 28.40 71,000
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Insider trading activities including stock purchases, stock sales, and option exercises of GNTX listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Gentex Corp (symbol GNTX, CIK number 355811) see the Securities and Exchange Commission (SEC) website.