Holder evidence
50
SEC ownership of PLEXUS CORP
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000785786.
Lead holder
BlackRock, Inc.
13D/G signal
BlackRock, Inc.
Latest evidence
31 Mar 2026
- CIK
- 0000785786
- Symbol
- PLXS on Nasdaq
- Location
- Neenah, WI
- SEC evidence mix
- 13F and 13D/G
- Lead holder
- BlackRock, Inc.
- Latest large-stake holder
- BlackRock, Inc.
- Latest evidence date
- 31 Mar 2026
Issuer identity
Ownership snapshot
Ownership snapshot
Top shareholders of PLEXUS 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.
Lead holder
BlackRock, Inc.
13D/G signal
BlackRock, Inc.
Evidence rows
50
Latest as of
31 Mar 2026
13F
13D/G
Lead comparable stake: 15%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Rank 1 holder
BlackRock, Inc.
13F
13D/G
- Ownership
- 15%
- Position
- $865.91M
Rank 2 holder
VANGUARD PORTFOLIO MANAGEMENT LLC
13D/G
13F
- Ownership
- 8.5%
- Position
- $461.18M
Rank 3 holder
AMERICAN CENTURY INVESTMENT MANAGEMENT INC
13D/G
- Ownership
- 5.8%
- Position
- $268.97M
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
15%
from 13D/G
|
$865,911,970
4,275,264 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
8.5%
|
$461,178,516
2,276,975 shares
|
$0 | 31 Mar 2026 |
| AMERICAN CENTURY INVESTMENT MANAGEMENT INC |
13D/G
|
5.8%
|
$268,973,202
1,560,622 shares
|
$0 | 31 Dec 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.2%
|
$283,565,722
1,400,048 shares
|
$0 | 31 Mar 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13D/G
13F
Company
|
4.2%
|
$226,744,603
1,119,371 shares
|
-$59,960,046 | 31 Mar 2026 |
| AMERICAN CENTURY COMPANIES INC |
13F
Company
|
5.8%
|
$316,455,258
1,562,431 shares
|
— | 31 Mar 2026 |
| DISCIPLINED GROWTH INVESTORS INC /MN |
13F
Company
|
5.6%
|
$302,720,132
1,494,619 shares
|
— | 31 Mar 2026 |
| STATE STREET CORP |
13F
Company
|
3.9%
|
$212,228,501
1,047,835 shares
|
— | 31 Mar 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: -$23,192,880.
Buys
$0
Insiders: 0
Sells
$23,192,880
Insiders: 10
Net
-$23,192,880
Shares: -120,442
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 120,442
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 20,471 | $0 | $5,275,406 | -$5,275,406 |
| 3-6 | 0 | 62,695 | $0 | $12,731,972 | -$12,731,972 |
| 6-9 | 0 | 20,920 | $0 | $2,994,359 | -$2,994,359 |
| 9-12 | 0 | 16,356 | $0 | $2,191,143 | -$2,191,143 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 22 reporting-owner rows connected to PLEXUS CORP. Open a relationship link for the CIK-to-CIK filing trail.
Rows
22
Lead holder
Dean A. Foate
Net 12M change
-$23,192,881
Latest report
27 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Dean A. Foate | Director, Chairman of the Board | $23,108,117 | -$3,074,468 | -12% | Mixed | 06 Feb 2026 |
| Todd P. Kelsey | President & CEO, Director | $22,569,631 | -$7,473,876 | -25% | Mixed | 27 May 2026 |
| Michael V Schrock | Director | $7,780,025 | Mixed | 09 Feb 2026 | ||
| Rainer Jueckstock | Director | $5,265,611 | Mixed | 09 Feb 2026 | ||
| Steven J. Frisch | Chief Strategy Officer | $4,963,019 | Mixed | 16 Aug 2024 | ||
| Angelo Michael Ninivaggi Jr. | EVP, Chief Legal & PAO & Secy | $4,755,601 | -$3,119,392 | -40% | Mixed | 07 May 2026 |
| Patrick John Jermain | Exec. VP & CFO | $4,312,721 | -$3,387,204 | -44% | Mixed | 06 May 2026 |
| Joann M. Eisenhart | Director | $3,880,778 | Mixed | 09 Feb 2026 | ||
| Oliver K. Mihm | Exec VP & COO | $3,456,600 | -$3,226,802 | -48% | Mixed | 17 Feb 2026 |
| Peter Kelly | Director | $3,216,700 | Mixed | 29 Jan 2024 | ||
| Victor (pang Hau) Tan | Regional President - APAC | $3,159,426 | -$1,847,200 | -37% | Mixed | 11 May 2026 |
| Stephen P. Cortinovis | Director | $3,156,209 | Mixed | 15 Feb 2022 | ||
| Paul A. Rooke | Director | $2,895,970 | Mixed | 09 Feb 2026 | ||
| Karen Marie Rapp | Director | $1,809,282 | -$239,030 | -12% | Mixed | 27 Feb 2026 |
| J. Joel Quadracci | Director | $1,428,755 | Mixed | 09 Feb 2026 | ||
| Scott Theune | Regional President - AMER | $1,308,082 | Mixed | 16 Nov 2023 | ||
| Randy J. Martinez | Director | $1,196,453 | -$203,140 | -15% | Mixed | 25 Feb 2026 |
| Jennifer Wuamett | Director | $717,122 | Mixed | 09 Feb 2026 | ||
| Michael J. Running | Regional President - AMER | $422,005 | -$333,585 | -44% | Mixed | 25 Feb 2026 |
| Frank Zycinski | Regional President - EMEA | $304,132 | -$288,184 | -49% | Mixed | 12 Feb 2026 |
Recent insider transactions for PLEXUS CORP
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Reported value | Reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Todd P. Kelsey | PLXS | Common Stock, $.01 par value | Sale | -1.38% | $274,750 | $274.75 | -1,000 | 71,388 | 27 May 2026 | Direct |
| Todd P. Kelsey | PLXS | Common Stock, $.01 par value | Sale | -2.03% | $379,150 | $252.77 | -1,500 | 72,388 | 20 May 2026 | Direct |
| Victor (pang Hau) Tan | PLXS | Common Stock, $.01 par value | Sale | -22.3% | $813,700 | $271.23 | -3,000 | 10,457 | 11 May 2026 | Direct |
| Angelo Michael Ninivaggi Jr. | PLXS | Common Stock, $.01 par value | Sale | -16.7% | $865,736 | $264.75 | -3,270 | 16,266 | 08 May 2026 | Direct |
| Angelo Michael Ninivaggi Jr. | PLXS | Common Stock, $.01 par value | Sale | -10.5% | $604,340 | $262.99 | -2,298 | 19,536 | 07 May 2026 | Direct |
| Patrick John Jermain | PLXS | Common Stock, $.01 par value | Discretionary transaction in accordance with Rule 16b-3(f) resulting in acquisition or disposition of issuer securities | -100% | -3,815 | 0 | 06 May 2026 | 401(k) | ||
| Todd P. Kelsey | PLXS | Common Stock, $.01 par value | Sale | -1.34% | $270,750 | $270.75 | -1,000 | 73,888 | 06 May 2026 | Direct |
| Todd P. Kelsey | PLXS | Common Stock, $.01 par value | Sale | -3.85% | $805,350 | $268.45 | -3,000 | 74,888 | 05 May 2026 | Direct |
| Todd P. Kelsey | PLXS | Common Stock, $.01 par value | Sale | -2.99% | $634,139 | $263.89 | -2,403 | 77,888 | 04 May 2026 | Direct |
| Todd P. Kelsey | PLXS | Common Stock, $.01 par value | Sale | -1.83% | $336,130 | $224.09 | -1,500 | 80,291 | 15 Apr 2026 | Direct |
| Todd P. Kelsey | PLXS | Common Stock, $.01 par value | Sale | -1.8% | $291,360 | $194.24 | -1,500 | 81,791 | 18 Mar 2026 | Direct |
| Karen Marie Rapp | PLXS | Common Stock, $.01 par value | Sale | -5.53% | $97,795 | $195.59 | -500 | 8,535 | 27 Feb 2026 | Direct |
| Michael J. Running | PLXS | Common Stock, $.01 par value | Sale | -37.3% | $143,829 | $205.47 | -700 | 1,175 | 25 Feb 2026 | Direct |
| Randy J. Martinez | PLXS | Common Stock, $.01 par value | Sale | -16.1% | $203,140 | $203.14 | -1,000 | 5,201 | 25 Feb 2026 | Direct |
| Oliver K. Mihm | PLXS | Common Stock, $.01 par value | Sale | -42.7% | $1,921,557 | $201.40 | -9,541 | 12,809 | 18 Feb 2026 | Direct |
| Todd P. Kelsey | PLXS | Common Stock, $.01 par value | Sale | -5.91% | $1,024,112 | $195.78 | -5,231 | 83,291 | 18 Feb 2026 | Direct |
| Victor (pang Hau) Tan | PLXS | Common Stock, $.01 par value | Options Exercise | 17.7% | 2,022 | 13,457 | 17 Feb 2026 | Direct | ||
| Victor (pang Hau) Tan | PLXS | Performance Stock Units | Options Exercise | -100% | -2,022 | 0 | 17 Feb 2026 | Direct | ||
| Victor (pang Hau) Tan | PLXS | Performance Stock Units | Award | 42.4% | 602 | 2,022 | 17 Feb 2026 | Direct | ||
| Michael J. Running | PLXS | Common Stock, $.01 par value | Tax liability | -21.6% | -516 | 1,875 | 17 Feb 2026 | Direct | ||
| Michael J. Running | PLXS | Common Stock, $.01 par value | Options Exercise | 84.6% | 1,096 | 2,391 | 17 Feb 2026 | Direct | ||
| Michael J. Running | PLXS | Performance Stock Units | Options Exercise | -100% | -1,096 | 0 | 17 Feb 2026 | Direct | ||
| Michael J. Running | PLXS | Performance Stock Units | Award | 42.3% | 326 | 1,096 | 17 Feb 2026 | Direct | ||
| Angelo Michael Ninivaggi Jr. | PLXS | Common Stock, $.01 par value | Tax liability | -6.59% | -1,540 | 21,834 | 17 Feb 2026 | Direct | ||
| Angelo Michael Ninivaggi Jr. | PLXS | Common Stock, $.01 par value | Options Exercise | 16.3% | 3,275 | 23,374 | 17 Feb 2026 | Direct | ||
| Angelo Michael Ninivaggi Jr. | PLXS | Performance Stock Units | Options Exercise | -100% | -3,275 | 0 | 17 Feb 2026 | Direct | ||
| Angelo Michael Ninivaggi Jr. | PLXS | Performance Stock Units | Award | 42.4% | 975 | 3,275 | 17 Feb 2026 | Direct | ||
| Oliver K. Mihm | PLXS | Common Stock, $.01 par value | Sale | -9.06% | $442,495 | $198.78 | -2,226 | 22,350 | 17 Feb 2026 | Direct |
| Oliver K. Mihm | PLXS | Common Stock, $.01 par value | Tax liability | -7.69% | -2,048 | 24,576 | 17 Feb 2026 | Direct | ||
| Oliver K. Mihm | PLXS | Common Stock, $.01 par value | Options Exercise | 19.6% | 4,357 | 26,624 | 17 Feb 2026 | Direct | ||
| Oliver K. Mihm | PLXS | Performance Stock Units | Options Exercise | -100% | -4,357 | 0 | 17 Feb 2026 | Direct | ||
| Oliver K. Mihm | PLXS | Performance Stock Units | Award | 42.4% | 1,297 | 4,357 | 17 Feb 2026 | Direct | ||
| Todd P. Kelsey | PLXS | Common Stock, $.01 par value | Tax liability | -9.04% | -8,802 | 88,522 | 17 Feb 2026 | Direct | ||
| Todd P. Kelsey | PLXS | Common Stock, $.01 par value | Options Exercise | 23.8% | 18,726 | 97,324 | 17 Feb 2026 | Direct | ||
| Todd P. Kelsey | PLXS | Performance Stock Units | Options Exercise | -100% | -18,726 | 0 | 17 Feb 2026 | Direct | ||
| Todd P. Kelsey | PLXS | Performance Stock Units | Award | 42.4% | 5,576 | 18,726 | 17 Feb 2026 | Direct | ||
| Patrick John Jermain | PLXS | Common Stock, $.01 par value | Tax liability | -13.1% | -2,638 | 17,534 | 17 Feb 2026 | Direct | ||
| Patrick John Jermain | PLXS | Common Stock, $.01 par value | Options Exercise | 38.5% | 5,611 | 20,172 | 17 Feb 2026 | Direct | ||
| Patrick John Jermain | PLXS | Performance Stock Units | Options Exercise | -100% | -5,611 | 0 | 17 Feb 2026 | Direct | ||
| Patrick John Jermain | PLXS | Performance Stock Units | Award | 42.4% | 1,671 | 5,611 | 17 Feb 2026 | Direct | ||
| Patrick John Jermain | PLXS | Common Stock, $.01 par value | Sale | -13.8% | $466,806 | $201.12 | -2,321 | 14,561 | 12 Feb 2026 | Direct |
| Frank Zycinski | PLXS | Common Stock, $.01 par value | Sale | -100% | $288,184 | $205.99 | -1,399 | 0 | 12 Feb 2026 | Direct |
| Jennifer Wuamett | PLXS | Restricted Stock Units | Award | 1,008 | 1,008 | 09 Feb 2026 | Direct | |||
| Michael Schrock V | PLXS | Restricted Stock Units | Award | 1,008 | 1,008 | 09 Feb 2026 | Direct | |||
| Paul A. Rooke | PLXS | Restricted Stock Units | Award | 1,008 | 1,008 | 09 Feb 2026 | Direct | |||
| Karen Marie Rapp | PLXS | Restricted Stock Units | Award | 1,008 | 1,008 | 09 Feb 2026 | Direct | |||
| J. Joel Quadracci | PLXS | Restricted Stock Units | Award | 1,008 | 1,008 | 09 Feb 2026 | Direct | |||
| Randy J. Martinez | PLXS | Restricted Stock Units | Award | 1,008 | 1,008 | 09 Feb 2026 | Direct | |||
| Rainer Jueckstock | PLXS | Restricted Stock Units | Award | 1,008 | 1,008 | 09 Feb 2026 | Direct | |||
| Joann M. Eisenhart | PLXS | Restricted Stock Units | Award | 1,008 | 1,008 | 09 Feb 2026 | Direct |
* indicates a reported price that failed the local validity check.