Comparable stake leader
VANGUARD PORTFOLIO MANAGEMENT LLC
SEC ownership of COGNEX CORP
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000851205.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
29 Apr 2026
- Public ticker
- CGNX on Nasdaq
- Parsed ownership sources
- 13D/G, 13F, and 3/4/5
- Largest SEC-reported holder
- VANGUARD PORTFOLIO MANAGEMENT LLC
- Latest 13D/G holder
- VANGUARD PORTFOLIO MANAGEMENT LLC
- Latest parsed ownership date
- 29 Apr 2026
- Issuer CIK
- 0000851205
- Issuer location
- Natick, MA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Who this page is about.
2 identity fields
Ownership snapshot
Top shareholders of COGNEX 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 PORTFOLIO MANAGE...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
29 Apr 2026
13D/G
13F
3/4/5
Lead comparable stake: 6.2%
13D/G row: VANGUARD PORTFOLIO MANAGEMENT LLC
Showing 1-8 of 50 holder rows.
Quick read
VANGUARD PORTFOLIO MANAGEMENT LLC leads the comparable SEC ownership view at 6.2%.
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 PORTFOLIO MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
VANGUARD PORTFOLIO MANAGEMENT LLC
6.2%
VANGUARD CAPITAL MANAGEMENT LLC
5.2%
GIC Private Ltd
4%
Dianne M. Parrotte
0.02%
Sachin S. Lawande
0.02%
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 PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
6.2%
|
$509,052,640
10,390,950 shares
|
$0 | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.2%
|
$426,491,704
8,705,689 shares
|
$0 | 31 Mar 2026 |
| GIC Private Ltd |
13D/G
|
4%
|
$186,976,844
6,945,648 shares
|
$0 | 31 Dec 2024 |
| Dianne M. Parrotte |
3/4/5
Director
|
0.02%
|
$2,517,871
33,431 shares
mixed-class rows
|
-$2,376,000 | 02 Mar 2026 |
| Sachin S. Lawande |
3/4/5
Director
|
0.02%
|
$1,119,328
28,431 shares
|
— | 21 Feb 2026 |
| Marjorie Sennett |
3/4/5
Director
|
0.02%
|
$1,021,100
25,936 shares
|
— | 21 Feb 2026 |
| John Tseng-Chung Lee |
3/4/5
Director
|
0.01%
|
$977,163
24,820 shares
|
— | 21 Feb 2026 |
| Angelos Papadimitriou |
3/4/5
Director
|
0.01%
|
$901,625
16,222 shares
|
-$230,659 | 21 Feb 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: -$33,800,266.
Buys
$0
Insiders: 0
Sells
$33,800,266
Insiders: 9
Net
-$33,800,266
Shares: -556,686
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 556,686
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 224,847 | $0 | $14,975,630 | -$14,975,630 |
| 3-6 | 0 | 318,467 | $0 | $18,192,626 | -$18,192,626 |
| 6-9 | 0 | 13,372 | $0 | $632,010 | -$632,010 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 22 reporting-owner rows connected to COGNEX CORP. Open a relationship link for the CIK-to-CIK filing trail.
Rows
22
Largest Forms 3/4/5 holder
Anthony Sun
Net 12M change
-$33,800,268
Latest report
11 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Anthony Sun | Director | $15,775,282 | Mixed | 21 Feb 2026 | ||
| Robert Willett | Director | $15,082,610 | -$10,796,897 | -42% | Mixed | 18 Feb 2026 |
| Carl W. Gerst | EVP, Global Sales and Products | $6,354,711 | -$802,022 | -11% | Mixed | 20 Feb 2026 |
| Sheila Marie DiPalma | EVP, Employee Services | $5,027,744 | -$180,150 | -3.5% | Mixed | 20 Feb 2026 |
| Joerg Kuechen | Head of Corporate M&A | $2,792,100 | -$3,468,386 | -55% | Mixed | 20 Feb 2026 |
| Dennis Fehr | SVP, Chief Financial Officer | $2,632,202 | Mixed | 06 May 2026 | ||
| Dianne M. Parrotte | Director | $2,517,871 | -$2,376,000 | -49% | Mixed | 02 Mar 2026 |
| Paul Todgham | Svp, Cfo | $1,468,247 | Mixed | 22 Feb 2024 | ||
| Matthew Moschner | CEO & President, Director | $1,453,909 | Mixed | 20 Feb 2026 | ||
| Sachin S. Lawande | Director | $1,119,328 | Mixed | 21 Feb 2026 | ||
| Marjorie Sennett | Director | $1,021,100 | Mixed | 21 Feb 2026 | ||
| John Tseng-Chung Lee | Director | $977,163 | Mixed | 21 Feb 2026 | ||
| Laura A. MacDonald | VP and PAO | $950,095 | -$10,252,718 | -92% | Mixed | 11 May 2026 |
| Angelos Papadimitriou | Director | $901,625 | -$230,659 | -20% | Filing P/S | 21 Feb 2026 |
| Theodor Krantz | Director | $860,614 | Mixed | 22 Feb 2023 | ||
| Michael Bowdoin | Vice President | $545,699 | Median | 29 Apr 2026 | ||
| Darren Marc Long | Vice President | $265,415 | -$1,343,457 | -84% | Filing P/S | 29 Apr 2026 |
| Patrick Alias | Director | $162,861 | Mixed | 03 Mar 2023 | ||
| COGNEX CORP | Pfo & Pao | $154,930 | Mixed | 15 Mar 2024 | ||
| Mark Fennell | Chief Legal Officer &Secretary | $0 | -$4,349,979 | -100% | Mixed | 29 Apr 2026 |
Recent insider transactions for COGNEX 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Darren Marc Long | CGNX | Common Stock | Sale | -83.5% | $1,343,457 | $66.34 | -20,252 | 3,990 | 27 May 2026 | Direct |
| Darren Marc Long | CGNX | Common Stock | Options Exercise | 18,673 | 14,244 | 27 May 2026 | Direct | |||
| Darren Marc Long | CGNX | Non-Qualified Stock Option (right to buy) | Options Exercise | -100% | -18,673 | 0 | 27 May 2026 | Direct | ||
| Laura A. MacDonald | CGNX | Common Stock | Sale | -88.8% | $2,727,429 | $65.56 | -41,600 | 5,258 | 12 May 2026 | Direct |
| Laura A. MacDonald | CGNX | Common Stock | Options Exercise | 41,600 | 30,758 | 12 May 2026 | Direct | |||
| Laura A. MacDonald | CGNX | Non-Qualified Stock Option (right to buy) | Options Exercise | -100% | -41,600 | 0 | 12 May 2026 | Direct | ||
| Mark Fennell | CGNX | Common Stock | Sale | -100% | $4,349,979 | $67.05 | -64,873 | 0 | 11 May 2026 | Direct |
| Mark Fennell | CGNX | Common Stock | Options Exercise | 60,010 | 23,159 | 11 May 2026 | Direct | |||
| Mark Fennell | CGNX | Non-Qualified Stock Option (right to buy) | Options Exercise | -100% | -60,010 | 0 | 11 May 2026 | Direct | ||
| Laura A. MacDonald | CGNX | Common Stock | Sale | -94.9% | $6,554,765 | $66.80 | -98,122 | 5,258 | 11 May 2026 | Direct |
| Laura A. MacDonald | CGNX | Common Stock | Options Exercise | 95,910 | 37,470 | 11 May 2026 | Direct | |||
| Laura A. MacDonald | CGNX | Non-Qualified Stock Option (right to buy) | Options Exercise | -100% | -95,910 | 0 | 11 May 2026 | Direct | ||
| Dennis Fehr | CGNX | Common Stock | Tax liability | -11% | -1,984 | 15,988 | 06 May 2026 | Direct | ||
| Dennis Fehr | CGNX | Common Stock | Options Exercise | 42.9% | 5,394 | 17,972 | 06 May 2026 | Direct | ||
| Dennis Fehr | CGNX | Restricted Stock Unit | Options Exercise | -37.5% | -5,394 | 8,991 | 06 May 2026 | Direct | ||
| Laura A. MacDonald | CGNX | Common Stock | Tax liability | -1.44% | -109 | 7,470 | 15 Mar 2026 | Direct | ||
| Laura A. MacDonald | CGNX | Common Stock | Options Exercise | 5.1% | 368 | 7,579 | 15 Mar 2026 | Direct | ||
| Laura A. MacDonald | CGNX | Restricted Stock Unit | Options Exercise | -37.5% | -368 | 614 | 15 Mar 2026 | Direct | ||
| Dianne M. Parrotte | CGNX | Common Stock | Sale | -56.8% | $2,376,000 | $54.00 | -44,000 | 33,431 | 02 Mar 2026 | Direct |
| Dianne M. Parrotte | CGNX | Common Stock | Options Exercise | 561.9% | 44,000 | 51,831 | 02 Mar 2026 | Direct | ||
| Dianne M. Parrotte | CGNX | Non-Qualified Stock Option (right to buy) | Options Exercise | -100% | -44,000 | 0 | 02 Mar 2026 | Direct | ||
| Angelos Papadimitriou | CGNX | Common Stock | Sale | -20.4% | $230,659 | $55.58 | -4,150 | 16,222 | 23 Feb 2026 | Direct |
| Carl W. Gerst | CGNX | Common Stock | Sale | -100% | $589,042 | $55.93 | -10,532 | 0 | 23 Feb 2026 | Direct |
| Dianne M. Parrotte | CGNX | Common Stock | Options Exercise | 9.55% | 2,913 | 33,431 | 21 Feb 2026 | Direct | ||
| Dianne M. Parrotte | CGNX | Restricted Stock Unit | Options Exercise | -100% | -2,913 | 0 | 21 Feb 2026 | Direct | ||
| Angelos Papadimitriou | CGNX | Common Stock | Options Exercise | 14.2% | 2,537 | 20,372 | 21 Feb 2026 | Direct | ||
| Angelos Papadimitriou | CGNX | Restricted Stock Unit | Options Exercise | -100% | -2,537 | 0 | 21 Feb 2026 | Direct | ||
| John Tseng-Chung Lee | CGNX | Common Stock | Options Exercise | 13.3% | 2,913 | 24,820 | 21 Feb 2026 | Direct | ||
| John Tseng-Chung Lee | CGNX | Restricted Stock Unit | Options Exercise | -100% | -2,913 | 0 | 21 Feb 2026 | Direct | ||
| Marjorie Sennett | CGNX | Common Stock | Options Exercise | 12.6% | 2,913 | 25,936 | 21 Feb 2026 | Direct | ||
| Marjorie Sennett | CGNX | Restricted Stock Unit | Options Exercise | -100% | -2,913 | 0 | 21 Feb 2026 | Direct | ||
| Sachin Lawande | CGNX | Common Stock | Options Exercise | 11.4% | 2,913 | 28,431 | 21 Feb 2026 | Direct | ||
| Sachin Lawande | CGNX | Restricted Stock Unit | Options Exercise | -100% | -2,913 | 0 | 21 Feb 2026 | Direct | ||
| Anthony Sun | CGNX | Common Stock | Options Exercise | 0.88% | 2,913 | 335,085 | 21 Feb 2026 | Direct | ||
| Anthony Sun | CGNX | Restricted Stock Unit | Options Exercise | -100% | -2,913 | 0 | 21 Feb 2026 | Direct | ||
| Matthew Moschner | CGNX | Common Stock | Tax liability | -5.87% | -1,026 | 16,465 | 21 Feb 2026 | Direct | ||
| Matthew Moschner | CGNX | Common Stock | Options Exercise | 25% | 3,495 | 17,491 | 21 Feb 2026 | Direct | ||
| Matthew Moschner | CGNX | Restricted Stock Unit | Options Exercise | -100% | -3,495 | 0 | 21 Feb 2026 | Direct | ||
| Joerg Kuechen | CGNX | Common Stock | Tax liability | -33.8% | -3,073 | 6,032 | 21 Feb 2026 | Direct | ||
| Joerg Kuechen | CGNX | Common Stock | Options Exercise | 231.1% | 6,355 | 9,105 | 21 Feb 2026 | Direct | ||
| Joerg Kuechen | CGNX | Restricted Stock Unit | Options Exercise | -100% | -6,355 | 0 | 21 Feb 2026 | Direct | ||
| Carl W. Gerst | CGNX | Common Stock | Tax liability | -22.7% | -3,095 | 10,532 | 21 Feb 2026 | Direct | ||
| Carl W. Gerst | CGNX | Common Stock | Options Exercise | 181.8% | 8,791 | 13,627 | 21 Feb 2026 | Direct | ||
| Carl W. Gerst | CGNX | Restricted Stock Unit | Options Exercise | -100% | -8,791 | 0 | 21 Feb 2026 | Direct | ||
| Laura A. MacDonald | CGNX | Common Stock | Tax liability | -10.1% | -809 | 7,211 | 21 Feb 2026 | Direct | ||
| Laura A. MacDonald | CGNX | Common Stock | Options Exercise | 52.3% | 2,754 | 8,020 | 21 Feb 2026 | Direct | ||
| Laura A. MacDonald | CGNX | Restricted Stock Unit | Options Exercise | -100% | -2,754 | 0 | 21 Feb 2026 | Direct | ||
| Sheila Marie DiPalma | CGNX | Common Stock | Tax liability | -9.39% | -1,555 | 15,013 | 21 Feb 2026 | Direct | ||
| Sheila Marie DiPalma | CGNX | Common Stock | Options Exercise | 47% | 5,295 | 16,568 | 21 Feb 2026 | Direct | ||
| Sheila Marie DiPalma | CGNX | Restricted Stock Unit | Options Exercise | -100% | -5,295 | 0 | 21 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.