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General | Insiders | Insider Transactions | Monthly Overview | Weekly Overview

Overview of all insider trading transactions in GENTEX CORP. Get notifications about new insider transactions in GENTEX CORP for free.

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Date	Ticker	Company	Owner	Relationship	Transaction	Code	Cost ($)	Shares	Transaction Value ($)	Total Shares	% Holdings
May 06 2014	GNTX	GENTEX CORP	Nash Kevin C	Chief Accounting Of ...	Buy	M	24.96	1,000	24,960	10,523	9.5 K to 10.5 K (+10.50 %)
May 06 2014	GNTX	GENTEX CORP	Nash Kevin C	Chief Accounting Of ...	Buy	M	19.53	1,305	25,480	9,523	8.2 K to 9.5 K (+15.88 %)
May 06 2014	GNTX	GENTEX CORP	Nash Kevin C	Chief Accounting Of ...	Buy	M	14.25	1,243	17,713	8,218	7 K to 8.2 K (+17.82 %)
May 16 2014	GNTX	GENTEX CORP	GOODE GARY F	Director	Option Exercise	A	28.60	7,000	200,200	7,000
May 06 2014	GNTX	GENTEX CORP	Downing Steven R	Chief Financial Off ...	Option Exercise	M	14.25	1,750	24,938	0
May 06 2014	GNTX	GENTEX CORP	Downing Steven R	Chief Financial Off ...	Sell	S	29.68	1,750	51,943	15,475	17.2 K to 15.5 K (-10.16 %)
May 06 2014	GNTX	GENTEX CORP	Downing Steven R	Chief Financial Off ...	Buy	M	14.25	1,750	24,938	17,225	15.5 K to 17.2 K (+11.31 %)
May 02 2014	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Option Exercise	M	17.27	3,618	62,483	14,472
May 02 2014	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Option Exercise	M	24.96	6,576	164,137	9,864
May 02 2014	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Option Exercise	M	19.53	9,216	179,942	6,144
May 02 2014	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Option Exercise	M	14.25	8,352	119,016	2,784
May 02 2014	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Option Exercise	M	14.30	6,912	98,842	0
May 02 2014	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Sell	S	28.68	34,674	994,391	43,060	77.7 K to 43.1 K (-44.61 %)
May 02 2014	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Buy	M	17.27	3,618	62,483	77,734	74.1 K to 77.7 K (+4.88 %)
May 02 2014	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Buy	M	24.96	6,576	164,137	74,116	67.5 K to 74.1 K (+9.74 %)
May 02 2014	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Buy	M	19.53	9,216	179,942	67,540	58.3 K to 67.5 K (+15.80 %)
May 02 2014	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Buy	M	14.25	8,352	119,016	58,324	50 K to 58.3 K (+16.71 %)
May 02 2014	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Buy	M	14.30	6,912	98,842	49,972	43.1 K to 50 K (+16.05 %)
Feb 12 2014	GNTX	GENTEX CORP	MULDER JOHN A	Director	Sell	S	31.51	6,000	189,065	74,308	80.3 K to 74.3 K (-7.47 %)
Feb 12 2014	GNTX	GENTEX CORP	MULDER JOHN A	Director	Sell	S	31.35	6,000	188,129	80,308	86.3 K to 80.3 K (-6.95 %)
Feb 10 2014	GNTX	GENTEX CORP	MULDER JOHN A	Director	Option Exercise	M	22.39	6,000	134,340	0
Feb 10 2014	GNTX	GENTEX CORP	MULDER JOHN A	Director	Option Exercise	M	21.12	6,000	126,720	0
Feb 10 2014	GNTX	GENTEX CORP	MULDER JOHN A	Director	Buy	M	22.39	6,000	134,340	86,308	80.3 K to 86.3 K (+7.47 %)
Feb 10 2014	GNTX	GENTEX CORP	MULDER JOHN A	Director	Buy	M	21.12	6,000	126,720	80,308	74.3 K to 80.3 K (+8.07 %)
Feb 07 2014	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Option Exercise	M	24.73	2,500	61,825	3,500
Feb 07 2014	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Option Exercise	M	22.39	3,000	67,170	0
Feb 07 2014	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Sell	S	30.58	5,500	168,163	13,848	19.3 K to 13.8 K (-28.43 %)
Feb 07 2014	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Buy	M	24.73	2,500	61,825	19,348	16.8 K to 19.3 K (+14.84 %)
Feb 07 2014	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Buy	M	22.39	3,000	67,170	16,848	13.8 K to 16.8 K (+21.66 %)
Dec 31 2013	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Option Exercise	A	32.83	13,850	454,696	13,850
Dec 13 2013	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Option Exercise	M	15.85	4,130	65,461	0
Dec 13 2013	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Sell	S	30.15	4,130	124,500	15,194	19.3 K to 15.2 K (-21.37 %)
Dec 13 2013	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Buy	M	15.85	4,130	65,461	19,324	15.2 K to 19.3 K (+27.18 %)
Nov 27 2013	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Option Exercise	M	15.85	2,000	31,700	4,130
Nov 27 2013	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Sell	S	29.82	2,000	59,640	15,194	17.2 K to 15.2 K (-11.63 %)
Nov 27 2013	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Buy	M	15.85	2,000	31,700	17,194	15.2 K to 17.2 K (+13.16 %)
Oct 31 2013	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Option Exercise	M	22.39	3,000	67,170	3,000
Oct 31 2013	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Option Exercise	M	18.41	6,000	110,460	0
Oct 31 2013	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Sell	S	29.76	3,000	89,282	13,848	16.8 K to 13.8 K (-17.81 %)
Oct 31 2013	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Buy	M	22.39	3,000	67,170	16,848	13.8 K to 16.8 K (+21.66 %)
Oct 31 2013	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Buy	M	18.41	6,000	110,460	13,848	7.8 K to 13.8 K (+76.45 %)
Oct 31 2013	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Sell	S	30.32	5,500	166,770	7,848	13.3 K to 7.8 K (-41.20 %)
Oct 31 2013	GNTX	GENTEX CORP	GOODE GARY F	Director	Option Exercise	M	18.04	12,000	216,420	0
Oct 31 2013	GNTX	GENTEX CORP	GOODE GARY F	Director	Sell	S	30.14	12,000	361,667	8,000	20 K to 8 K (-60.00 %)
Oct 31 2013	GNTX	GENTEX CORP	GOODE GARY F	Director	Buy	M	18.04	12,000	216,420	20,000	8 K to 20 K (+150.00 %)
Oct 01 2013	GNTX	GENTEX CORP	Downing Steven R	Chief Financial Off ...	Option Exercise	A	25.59	9,000	230,310	9,000
Oct 01 2013	GNTX	GENTEX CORP	Downing Steven R	Chief Financial Off ...	Grant	A	0.00	9,000	0	15,475	6.5 K to 15.5 K (+139.00 %)
Oct 01 2013	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Option Exercise	A	25.59	21,700	555,303	21,700
Oct 01 2013	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Grant	A	0.00	5,000	0	43,060	38.1 K to 43.1 K (+13.14 %)
Oct 01 2013	GNTX	GENTEX CORP	Nash Kevin C	Chief Accounting Of ...	Option Exercise	A	25.59	6,660	170,429	6,660
Oct 01 2013	GNTX	GENTEX CORP	Nash Kevin C	Chief Accounting Of ...	Grant	A	0.00	3,000	0	6,975	4 K to 7 K (+75.47 %)
Sep 17 2013	GNTX	GENTEX CORP	Downing Steven R	Chief Financial Off ...	Option Exercise	M	14.30	648	9,266	0
Sep 17 2013	GNTX	GENTEX CORP	Downing Steven R	Chief Financial Off ...	Sell	S	25.06	648	16,241	6,475	7.1 K to 6.5 K (-9.10 %)
Sep 17 2013	GNTX	GENTEX CORP	Downing Steven R	Chief Financial Off ...	Buy	M	14.30	648	9,266	7,123	6.5 K to 7.1 K (+10.01 %)
Aug 16 2013	GNTX	GENTEX CORP	BAUER FRED	Chairman of the Boa ...	Option Exercise	A	22.56	130,000	2,932,800	130,000
Aug 12 2013	GNTX	GENTEX CORP	TSUHA WALLACE K JR	Director	Option Exercise	M	19.34	6,000	116,040	0
Aug 12 2013	GNTX	GENTEX CORP	TSUHA WALLACE K JR	Director	Option Exercise	M	18.41	6,000	110,460	0
Aug 12 2013	GNTX	GENTEX CORP	TSUHA WALLACE K JR	Director	Buy	M	19.34	6,000	116,040	17,000	11 K to 17 K (+54.55 %)
Aug 12 2013	GNTX	GENTEX CORP	TSUHA WALLACE K JR	Director	Buy	M	18.41	6,000	110,460	11,000	5 K to 11 K (+120.00 %)
Aug 08 2013	GNTX	GENTEX CORP	TSUHA WALLACE K JR	Director	Option Exercise	M	22.39	6,000	134,340	0
Aug 08 2013	GNTX	GENTEX CORP	TSUHA WALLACE K JR	Director	Option Exercise	M	21.12	6,000	126,720	0
Aug 08 2013	GNTX	GENTEX CORP	TSUHA WALLACE K JR	Director	Sell	S	22.77	12,000	273,234	5,000	17 K to 5 K (-70.59 %)
Aug 08 2013	GNTX	GENTEX CORP	TSUHA WALLACE K JR	Director	Buy	M	22.39	6,000	134,340	17,000	11 K to 17 K (+54.55 %)
Aug 08 2013	GNTX	GENTEX CORP	TSUHA WALLACE K JR	Director	Buy	M	21.12	6,000	126,720	11,000	5 K to 11 K (+120.00 %)
Jul 31 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Sell	S	22.24	10,986	244,304	6,000	17 K to 6 K (-64.68 %)
Jul 31 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Sell	D	0.00	7,500	0	16,986	24.5 K to 17 K (-30.63 %)
Jul 29 2013	GNTX	GENTEX CORP	Hoekstra Peter	Director	Grant	A	21.80	650	14,170	4,000	3.4 K to 4 K (+19.40 %)
Jul 29 2013	GNTX	GENTEX CORP	BAUER FRED	Chairman of the Boa ...	Option Exercise	M	13.52	98,000	1,324,960	0
Jul 29 2013	GNTX	GENTEX CORP	BAUER FRED	Chairman of the Boa ...	Buy	M	13.52	98,000	1,324,960	4,014,864	3.9 M to 4 M (+2.50 %)
Jul 02 2013	GNTX	GENTEX CORP	Flynn Paul V	Vice President, Ope ...	Option Exercise	A	23.05	9,170	211,369	9,170
Jul 02 2013	GNTX	GENTEX CORP	Flynn Paul V	Vice President, Ope ...	Sell	S	23.00	2,600	59,800	4,547	7.1 K to 4.5 K (-36.38 %)
May 28 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Option Exercise	M	18.03	8,316	149,937	5,544
May 28 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Option Exercise	M	8.30	2,640	21,912	2,640
May 28 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Option Exercise	M	18.12	2,520	45,662	0
May 28 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Sell	S	23.68	13,476	319,112	24,486	38 K to 24.5 K (-35.50 %)
May 28 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Buy	M	18.03	8,316	149,937	37,962	29.6 K to 38 K (+28.05 %)
May 28 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Buy	M	8.30	2,640	21,912	29,646	27 K to 29.6 K (+9.78 %)
May 28 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Buy	M	18.12	2,520	45,662	27,006	24.5 K to 27 K (+10.29 %)
May 20 2013	GNTX	GENTEX CORP	Hoekstra Peter	Director	Option Exercise	A	24.73	6,000	148,380	6,000
May 20 2013	GNTX	GENTEX CORP	Wallace James H	Director	Option Exercise	A	24.73	6,000	148,380	6,000
May 20 2013	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Option Exercise	A	24.73	6,000	148,380	6,000
May 20 2013	GNTX	GENTEX CORP	Schaum Richard O	Director	Option Exercise	A	24.73	6,000	148,380	6,000
May 20 2013	GNTX	GENTEX CORP	MULDER JOHN A	Director	Option Exercise	A	24.73	6,000	148,380	6,000
May 20 2013	GNTX	GENTEX CORP	LANTING ARLYN J	Director	Option Exercise	A	24.73	6,000	148,380	6,000
May 20 2013	GNTX	GENTEX CORP	GOODE GARY F	Director	Option Exercise	A	24.73	6,000	148,380	6,000
May 10 2013	GNTX	GENTEX CORP	Flynn Paul V	Vice President, Ope ...	Option Exercise	M	11.71	2,325	27,226	1,163
May 10 2013	GNTX	GENTEX CORP	Flynn Paul V	Vice President, Ope ...	Sell	S	24.56	2,325	57,094	7,147	9.5 K to 7.1 K (-24.55 %)
May 10 2013	GNTX	GENTEX CORP	Flynn Paul V	Vice President, Ope ...	Buy	M	11.71	2,325	27,226	9,472	7.1 K to 9.5 K (+32.53 %)
May 10 2013	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Option Exercise	M	19.59	3,840	75,226	0
May 10 2013	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Sell	S	24.37	3,840	93,582	38,060	41.9 K to 38.1 K (-9.16 %)
May 10 2013	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Buy	M	19.59	3,840	75,226	41,900	38.1 K to 41.9 K (+10.09 %)
May 10 2013	GNTX	GENTEX CORP	BAUER FRED	Chairman of the Boa ...	Sell	S	24.52	418,632	10,266,238	3,916,864	4.3 M to 3.9 M (-9.66 %)
May 10 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Option Exercise	M	8.30	2,640	21,912	5,280
May 10 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Option Exercise	M	18.12	5,040	91,325	2,520
May 10 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Sell	S	24.50	7,680	188,166	24,486	32.2 K to 24.5 K (-23.88 %)
May 10 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Buy	M	8.30	2,640	21,912	32,166	29.5 K to 32.2 K (+8.94 %)
May 10 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Buy	M	18.12	5,040	91,325	29,526	24.5 K to 29.5 K (+20.58 %)
May 08 2013	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Option Exercise	M	15.85	3,500	55,475	6,130
May 08 2013	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Sell	S	24.14	3,500	84,503	15,194	18.7 K to 15.2 K (-18.72 %)
May 08 2013	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Buy	M	15.85	3,500	55,475	18,694	15.2 K to 18.7 K (+23.04 %)
May 02 2013	GNTX	GENTEX CORP	Flynn Paul V	Vice President, Ope ...	Option Exercise	M	14.44	1,105	15,956	0
May 02 2013	GNTX	GENTEX CORP	Flynn Paul V	Vice President, Ope ...	Sell	S	22.21	955	21,207	7,147	8.1 K to 7.1 K (-11.79 %)
May 02 2013	GNTX	GENTEX CORP	Flynn Paul V	Vice President, Ope ...	Buy	M	14.44	1,105	15,956	8,102	7 K to 8.1 K (+15.79 %)
Apr 26 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Option Exercise	M	15.85	2,400	38,040	0
Apr 26 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Sell	S	21.99	2,400	52,785	24,486	26.9 K to 24.5 K (-8.93 %)
Apr 26 2013	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Buy	M	15.85	2,400	38,040	26,886	24.5 K to 26.9 K (+9.80 %)
Dec 28 2012	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Option Exercise	A	18.75	13,310	249,563	13,310
Dec 28 2012	GNTX	GENTEX CORP	Los Bruce A	Senior Vice Preside ...	Grant	A	0.00	7,380	0	15,194	7.8 K to 15.2 K (+94.45 %)
Dec 21 2012	GNTX	GENTEX CORP	MULDER JOHN A	Director	Sell	S	18.60	8,000	148,790	44,308	52.3 K to 44.3 K (-15.29 %)
Dec 28 2012	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Option Exercise	A	18.75	16,200	303,750	16,200
Dec 28 2012	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Grant	A	0.00	7,500	0	24,486	17 K to 24.5 K (+44.15 %)
Oct 01 2012	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Option Exercise	A	17.27	18,090	312,414	18,090
Sep 14 2012	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Option Exercise	M	14.36	1,600	22,976	0
Sep 14 2012	GNTX	GENTEX CORP	Newton Mark W	Senior Vice Preside ...	Buy	M	14.36	1,600	22,976	24,800	23.2 K to 24.8 K (+6.90 %)
Aug 20 2012	GNTX	GENTEX CORP	BAUER FRED	Chairman of the Boa ...	Option Exercise	A	18.23	125,000	2,278,750	125,000
May 21 2012	GNTX	GENTEX CORP	Wallace James H	Director	Option Exercise	A	22.39	6,000	134,340	6,000
May 21 2012	GNTX	GENTEX CORP	TSUHA WALLACE K JR	Director	Option Exercise	A	22.39	6,000	134,340	6,000
May 21 2012	GNTX	GENTEX CORP	SOTOK FREDERICK A	Director	Option Exercise	A	22.39	6,000	134,340	6,000
May 21 2012	GNTX	GENTEX CORP	Schaum Richard O	Director	Option Exercise	A	22.39	6,000	134,340	6,000
May 21 2012	GNTX	GENTEX CORP	MULDER JOHN A	Director	Option Exercise	A	22.39	6,000	134,340	6,000
May 21 2012	GNTX	GENTEX CORP	LANTING ARLYN J	Director	Option Exercise	A	22.39	6,000	134,340	6,000
May 21 2012	GNTX	GENTEX CORP	GOODE GARY F	Director	Option Exercise	A	22.39	6,000	134,340	6,000
May 11 2012	GNTX	GENTEX CORP	JEN ENOCH C	Vice President	Option Exercise	M	9.96	7,237	72,081	7,238
May 11 2012	GNTX	GENTEX CORP	JEN ENOCH C	Vice President	Gift	G	23.18	2,000	46,360	41,644	43.6 K to 41.6 K (-4.58 %)
May 11 2012	GNTX	GENTEX CORP	JEN ENOCH C	Vice President	Sell	S	23.08	7,237	166,996	43,644	50.9 K to 43.6 K (-14.22 %)
May 11 2012	GNTX	GENTEX CORP	JEN ENOCH C	Vice President	Buy	M	9.96	7,237	72,081	50,881	43.6 K to 50.9 K (+16.58 %)
Apr 25 2012	GNTX	GENTEX CORP	LANTING ARLYN J	Director	Grant	A	20.99	5,000	104,944	230,000	225 K to 230 K (+2.22 %)
Apr 30 2012	GNTX	GENTEX CORP	LANTING ARLYN J	Director	Grant	A	21.88	10,000	218,831	240,000	230 K to 240 K (+4.35 %)
Apr 02 2012	GNTX	GENTEX CORP	JEN ENOCH C	Vice President	Sell	S	24.63	10,800	266,000	43,644	54.4 K to 43.6 K (-19.84 %)
Apr 02 2012	GNTX	GENTEX CORP	JEN ENOCH C	Vice President	Gift	G	24.84	2,000	49,680	54,444	56.4 K to 54.4 K (-3.54 %)
Dec 30 2011	GNTX	GENTEX CORP	Arnold John W	VP of Operations Au ...	Option Exercise	M	18.03	2,928	52,792	8,784
Dec 30 2011	GNTX	GENTEX CORP	Arnold John W	VP of Operations Au ...	Sell	S	29.34	2,928	85,896	10,182	13.1 K to 10.2 K (-22.33 %)
Dec 30 2011	GNTX	GENTEX CORP	Arnold John W	VP of Operations Au ...	Buy	M	18.03	2,928	52,792	13,110	10.2 K to 13.1 K (+28.76 %)
Dec 30 2011	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Option Exercise	A	29.92	15,280	457,178	15,280
Dec 28 2011	GNTX	GENTEX CORP	Arnold John W	VP of Operations Au ...	Option Exercise	M	8.30	2,788	23,140	5,576
Dec 28 2011	GNTX	GENTEX CORP	Arnold John W	VP of Operations Au ...	Option Exercise	M	18.12	2,654	48,090	2,654
Dec 28 2011	GNTX	GENTEX CORP	Arnold John W	VP of Operations Au ...	Option Exercise	M	15.85	2,526	40,037	0
Dec 28 2011	GNTX	GENTEX CORP	Arnold John W	VP of Operations Au ...	Sell	S	29.70	7,968	236,650	10,182	18.2 K to 10.2 K (-43.90 %)
Dec 28 2011	GNTX	GENTEX CORP	Arnold John W	VP of Operations Au ...	Buy	M	8.30	2,788	23,140	18,150	15.4 K to 18.2 K (+18.15 %)
Dec 28 2011	GNTX	GENTEX CORP	Arnold John W	VP of Operations Au ...	Buy	M	18.12	2,654	48,090	15,362	12.7 K to 15.4 K (+20.88 %)
Dec 28 2011	GNTX	GENTEX CORP	Arnold John W	VP of Operations Au ...	Buy	M	15.85	2,526	40,037	12,708	10.2 K to 12.7 K (+24.81 %)
Dec 05 2011	GNTX	GENTEX CORP	JEN ENOCH C	Senior Vice Preside ...	Option Exercise	M	14.00	10,000	140,000	0
Dec 05 2011	GNTX	GENTEX CORP	JEN ENOCH C	Senior Vice Preside ...	Gift	G	30.89	2,000	61,780	57,044	59 K to 57 K (-3.39 %)
Dec 05 2011	GNTX	GENTEX CORP	JEN ENOCH C	Senior Vice Preside ...	Sell	S	30.80	10,000	308,000	59,044	69 K to 59 K (-14.48 %)
Dec 05 2011	GNTX	GENTEX CORP	JEN ENOCH C	Senior Vice Preside ...	Buy	M	14.00	10,000	140,000	69,044	59 K to 69 K (+16.94 %)
Dec 05 2011	GNTX	GENTEX CORP	JEN ENOCH C	Senior Vice Preside ...	Gift	G	31.36	2,000	62,720	59,044	61 K to 59 K (-3.28 %)
Dec 22 2011	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Sell	S	28.40	2,500	71,000	16,986	19.5 K to 17 K (-12.83 %)
Dec 05 2011	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Option Exercise	M	18.12	5,040	91,325	7,560
Dec 05 2011	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Sell	S	30.72	5,040	154,836	19,486	24.5 K to 19.5 K (-20.55 %)
Dec 05 2011	GNTX	GENTEX CORP	Dykman Steven A	VP Finance & Treasu ...	Buy	M	18.12	5,040	91,325	24,526	19.5 K to 24.5 K (+25.86 %)

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