Comparable stake leader
VANGUARD CAPITAL MANAGEMENT LLC
SEC ownership of GENTEX CORP
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000355811.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
21 May 2026
- Public ticker
- GNTX on Nasdaq
- Parsed ownership sources
- 13D/G, 13F, and 3/4/5
- Largest SEC-reported holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest 13D/G holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest parsed ownership date
- 21 May 2026
- Issuer CIK
- 0000355811
- Issuer location
- Zeeland, MI
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of GENTEX CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
VANGUARD CAPITAL MANAGEME...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
21 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 5.3%
13D/G row: VANGUARD CAPITAL MANAGEMENT LLC
Showing 1-8 of 50 holder rows.
Quick read
VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 5.3%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens VANGUARD CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
VANGUARD CAPITAL MANAGEMENT LLC
5.3%
WELLINGTON MANAGEMENT GROUP LLP
1.1%
Downing Steven R. Power
0.12%
Neil J. Boehm Power
0.03%
Kevin C. Nash Power
0.03%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.3%
|
$248,594,376
11,377,317 shares
|
$0 | 31 Mar 2026 |
| WELLINGTON MANAGEMENT GROUP LLP |
13D/G
13F
Company
|
1.1%
|
$56,037,549
2,300,392 shares
|
-$271,480,629 | 31 Dec 2025 |
| Downing Steven R. Power |
3/4/5
President and CEO
|
0.12%
|
$6,215,746
255,162 shares
|
-$866,100 | 17 Feb 2026 |
| Neil J. Boehm Power |
3/4/5
Chief Technology Officer
|
0.03%
|
$1,800,301
73,904 shares
|
-$279,175 | 17 Feb 2026 |
| Kevin C. Nash Power |
3/4/5
Chief Financial Officer
|
0.03%
|
$1,785,831
73,310 shares
|
-$296,848 | 17 Feb 2026 |
| Scott P. Ryan Power |
3/4/5
General Counsel
|
0.03%
|
$1,346,596
55,279 shares
|
-$223,165 | 17 Feb 2026 |
| Matthew W. Chiodo Power |
3/4/5
Vice President of Sales
|
0.02%
|
$1,148,525
47,148 shares
|
-$496,171 | 17 Feb 2026 |
| Kathleen Starkoff Power |
3/4/5
Director
|
0.02%
|
$803,424
36,770 shares
|
— | 21 May 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$2,792,942.
Buys
$0
Insiders: 0
Sells
$2,792,942
Insiders: 9
Net
-$2,792,942
Shares: -114,459
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 114,459
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 27,475 | $0 | $631,483 | -$631,483 |
| 3-6 | 0 | 86,984 | $0 | $2,161,459 | -$2,161,459 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-18 of 18 reporting-owner rows connected to GENTEX CORP. Open a relationship link for the CIK-to-CIK filing trail.
Rows
18
Largest Forms 3/4/5 holder
Downing Steven R. Power
Net 12M change
-$2,792,942
Latest report
21 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Downing Steven R. Power | President and CEO | $6,215,746 | -$866,100 | -12% | Mixed | 17 Feb 2026 |
| Schaum Richard O | Director | $1,902,457 | -$112,247 | -5.6% | Median | 21 May 2026 |
| Neil J. Boehm Power | Chief Technology Officer | $1,800,301 | -$279,175 | -13% | Mixed | 17 Feb 2026 |
| Kevin C. Nash Power | Chief Financial Officer | $1,785,831 | -$296,848 | -14% | Mixed | 17 Feb 2026 |
| Scott P. Ryan Power | General Counsel | $1,346,596 | -$223,165 | -14% | Mixed | 17 Feb 2026 |
| Matthew W. Chiodo Power | Vice President of Sales | $1,148,525 | -$496,171 | -30% | Mixed | 17 Feb 2026 |
| Hollars James A. Power | Director | $1,127,849 | Mixed | 19 May 2023 | ||
| John A. Mulder Power | Director | $1,072,188 | Mixed | 27 Jul 2021 | ||
| Leslie L. Brown Power | Director | $917,437 | -$246,336 | -21% | Median | 21 May 2026 |
| James H. Wallace Power | Director | $895,721 | Mixed | 31 Oct 2022 | ||
| Gary F. Goode Power | Director | $842,976 | Filing P/S | 20 May 2024 | ||
| Kathleen Starkoff Power | Director | $803,424 | Median | 21 May 2026 | ||
| Ling Zang Power | Director | $777,838 | Median | 21 May 2026 | ||
| Brian Walker Power | Director | $651,807 | -$136,450 | -17% | Median | 21 May 2026 |
| Deur Garth D. Power | Director | $437,983 | Median | 21 May 2026 | ||
| Billy Pink | Director | $334,938 | Median | 21 May 2026 | ||
| John Kennedy Power | Director | $122,928 | Median | 21 May 2026 | ||
| Anderson Joseph By Power | Director | $0 | -$136,450 | -100% | Mixed | 15 May 2026 |
Recent insider transactions for GENTEX CORP
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| John Kennedy Power | GNTX | Common Stock | Award | 5,626 | 5,626 | 21 May 2026 | Direct | |||
| Ling Zang Power | GNTX | Common Stock | Award | 18.8% | 5,626 | 35,599 | 21 May 2026 | Direct | ||
| Brian Walker Power | GNTX | Common Stock | Award | 23.2% | 5,626 | 29,831 | 21 May 2026 | Direct | ||
| Kathleen Starkoff Power | GNTX | Common Stock | Award | 18.1% | 5,626 | 36,770 | 21 May 2026 | Direct | ||
| Schaum Richard O | GNTX | Common Stock | Award | 6.91% | 5,626 | 87,069 | 21 May 2026 | Direct | ||
| Billy Pink | GNTX | Common Stock | Award | 58% | 5,626 | 15,329 | 21 May 2026 | Direct | ||
| Deur Garth D. Power | GNTX | Common Stock | Award | 39% | 5,626 | 20,045 | 21 May 2026 | Direct | ||
| Leslie L. Brown Power | GNTX | Common Stock | Award | 15.5% | 5,626 | 41,988 | 21 May 2026 | Direct | ||
| Brian Walker Power | GNTX | Common Stock | Sale | -19.7% | $136,450 | $22.98 | -5,939 | 24,205 | 15 May 2026 | Direct |
| Anderson Joseph By Power | GNTX | Common Stock | Sale | -100% | $136,450 | $22.98 | -5,939 | 0 | 15 May 2026 | Direct |
| Leslie L. Brown Power | GNTX | Common Stock | Sale | -22.9% | $246,336 | $22.85 | -10,782 | 36,362 | 05 May 2026 | Direct |
| Leslie L. Brown Power | GNTX | Common Stock | Options Exercise | 42.2% | 14,000 | 47,144 | 05 May 2026 | Direct | ||
| Leslie L. Brown Power | GNTX | Non-Employee Director Stock Option Grant | Options Exercise | 14,000 | 14,000 | 05 May 2026 | Direct | |||
| Schaum Richard O | GNTX | Common Stock | Sale | -5.58% | $112,247 | $23.31 | -4,815 | 81,443 | 30 Apr 2026 | Direct |
| Schaum Richard O | GNTX | Common Stock | Options Exercise | 8.83% | 7,000 | 86,258 | 30 Apr 2026 | Direct | ||
| Schaum Richard O | GNTX | Non-Employee Director Stock Option Plan | Options Exercise | 100% | 7,000 | 14,000 | 30 Apr 2026 | Direct | ||
| Neil J. Boehm Power | GNTX | Common Stock | Award | 25.4% | 14,953 | 73,904 | 19 Feb 2026 | Direct | ||
| Scott P. Ryan Power | GNTX | Common Stock | Award | 24.8% | 11,000 | 55,279 | 19 Feb 2026 | Direct | ||
| Kevin C. Nash Power | GNTX | Common Stock | Award | 23.4% | 13,880 | 73,310 | 19 Feb 2026 | Direct | ||
| Downing Steven R. Power | GNTX | Common Stock | Award | 20.6% | 43,492 | 255,162 | 19 Feb 2026 | Direct | ||
| Matthew W. Chiodo Power | GNTX | Common Stock | Award | 34.3% | 12,047 | 47,148 | 19 Feb 2026 | Direct | ||
| Neil J. Boehm Power | GNTX | Common Stock | Sale | -16% | $279,175 | $24.82 | -11,248 | 58,951 | 17 Feb 2026 | Direct |
| Neil J. Boehm Power | GNTX | Common Stock | Tax liability | -22.5% | -17,768 | 61,283 | 17 Feb 2026 | Direct | ||
| Neil J. Boehm Power | GNTX | Common Stock | Award | 57.2% | 31,993 | 87,967 | 17 Feb 2026 | Direct | ||
| Scott P. Ryan Power | GNTX | Common Stock | Sale | -16.9% | $223,165 | $24.73 | -9,024 | 44,279 | 17 Feb 2026 | Direct |
| Scott P. Ryan Power | GNTX | Common Stock | Tax liability | -21.3% | -14,399 | 53,303 | 17 Feb 2026 | Direct | ||
| Scott P. Ryan Power | GNTX | Common Stock | Award | 61.5% | 25,782 | 67,702 | 17 Feb 2026 | Direct | ||
| Kevin C. Nash Power | GNTX | Common Stock | Sale | -16.7% | $296,848 | $24.98 | -11,885 | 59,430 | 17 Feb 2026 | Direct |
| Kevin C. Nash Power | GNTX | Common Stock | Tax liability | -22.9% | -21,170 | 71,315 | 17 Feb 2026 | Direct | ||
| Kevin C. Nash Power | GNTX | Common Stock | Award | 70.3% | 38,181 | 92,485 | 17 Feb 2026 | Direct | ||
| Downing Steven R. Power | GNTX | Common Stock | Sale | -14.2% | $866,100 | $24.75 | -35,000 | 211,670 | 17 Feb 2026 | Direct |
| Downing Steven R. Power | GNTX | Common Stock | Tax liability | -21.7% | -68,332 | 246,670 | 17 Feb 2026 | Direct | ||
| Downing Steven R. Power | GNTX | Common Stock | Award | 65.2% | 124,311 | 315,002 | 17 Feb 2026 | Direct | ||
| Matthew W. Chiodo Power | GNTX | Common Stock | Sale | -36.1% | $496,171 | $25.02 | -19,827 | 35,101 | 17 Feb 2026 | Direct |
| Matthew W. Chiodo Power | GNTX | Common Stock | Tax liability | -22.3% | -15,751 | 54,928 | 17 Feb 2026 | Direct | ||
| Matthew W. Chiodo Power | GNTX | Common Stock | Award | 66.7% | 28,269 | 70,679 | 17 Feb 2026 | Direct | ||
| Kevin C. Nash Power | GNTX | Common Stock | Gift | -1.57% | -865 | 54,304 | 26 Aug 2025 | Direct |
* marks a reported price that did not pass the local price check.