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Nasdaq · CIK 0000785786

PLXS PLEXUS CORP

Insider trading from SEC Form 4. Last filing 26 d ago. Close $256.56 on Oct 12, 2026, +93% from the 52-week low and -16% from the high.

In brief

PLEXUS CORP (PLXS) has 158 SEC Form 4 filings on file from 12 insiders, the latest filed on Sep 17, 2026. In the last 90 days insiders made 0 open-market buys worth $0 and 5 open-market sells worth $2.4M, net -$2.4M.

82 open-market trades have been scored at PLXS. The newest: Todd P. Kelsey (President & CEO) sold $364k of stock on Sep 16, 2026, filed Sep 17, 2026, scored 20 (weak), under a 10b5-1 plan. The largest of the 50 shown: Oliver K. Mihm (Exec VP & COO) sold $2.4M on Feb 17, 2026, scored 65 (notable). 2 insiders sold within 14 days of each other around Aug 31, 2026.

25 Form 144 notices of planned sales are on file, the latest filed Aug 19, 2026.

Last 90 days

Net insider value
-$2.4M
more sold than bought
Buys
0
$0 by 0 insiders
Sells
5
$2.4M by 3 insiders
Insiders on file
12
with a Form 4 at this company

Price and insider trades, last year

PLXSOct 12, 2026 · close 256.56

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

Open-market buys and sells at PLEXUS CORP, scored: the newest 50 of 82.

ScoreInsiderValueHoldingsPrice contextFiled
20WeakTodd P. Kelsey
President & CEO
sell
$364k
1,500 shares
-2%-
13WeakKaren Marie Rapp
director
sell
$120k
500 shares
-6%+80% from low-21% from high
36WeakTodd P. Kelsey
President & CEO
sell
$376k
1,500 shares
-2%+90% from low-20% from high
28WeakMichael Schrock V
director
sell
$1.1M
4,000 shares
-9%+110% from low-11% from high
21WeakTodd P. Kelsey
President & CEO
sell
$391k
1,500 shares
-2%+115% from low-16% from high
30WeakTodd P. Kelsey
President & CEO
sell
$442k
1,500 shares
-2%+149% from low-0% from high
56ModerateMichael J. Running
Regional President - AMER
sell
$139k
510 shares
-43%+131% from low-5% from high
54ModerateTodd P. Kelsey
President & CEO
sell
$290k
1,000 shares
-1%+143% from low0% from high
21WeakKaren Marie Rapp
director
sell
$135k
500 shares
-6%+129% from low-1% from high
53ModerateTodd P. Kelsey
President & CEO
sell
$275k
1,000 shares
-1%+127% from low-2% from high
36WeakTodd P. Kelsey
President & CEO
sell
$379k
1,500 shares
-2%+118% from low-5% from high
62NotableVictor (Pang Hau) Tan
Regional President - APAC
sell
$814k
3,000 shares
-22%+130% from low0% from high
65NotableAngelo Michael Ninivaggi Jr
EVP, Chief Legal & PAO & Secy
sell
$1.5M
5,568 shares
-26%+120% from low-2% from high
65NotableTodd P. Kelsey
President & CEO
sell
$1.7M
6,403 shares
-8%+122% from low-1% from high
20WeakTodd P. Kelsey
President & CEO
sell
$336k
1,500 shares
-2%+86% from low-4% from high
19WeakTodd P. Kelsey
President & CEO
sell
$291k
1,500 shares
-2%+76% from low-6% from high
20WeakKaren Marie Rapp
director
sell
$98k
500 shares
-6%+75% from low-7% from high
47ModerateRandy J Martinez
director
sell
$203k
1,000 shares
-16%+84% from low-2% from high
56ModerateMichael J. Running
Regional President - AMER
sell
$144k
700 shares
-37%+84% from low-2% from high
30WeakTodd P. Kelsey
President & CEO
sell
$1.0M
5,231 shares
-6%+78% from low-5% from high
65NotableOliver K. Mihm
Exec VP & COO
sell
$2.4M
11,767 shares
-48%+77% from low-6% from high
54ModeratePatrick John Jermain
Exec. VP & CFO
sell
$467k
2,321 shares
-14%+79% from low-4% from high
69NotableFrank Zycinski
Regional President - EMEA
sell
$288k
1,399 shares
-100%+79% from low-4% from high
55ModerateDean A Foate
director, other
sell
$2.0M
10,000 shares
-9%+86% from low0% from high
60NotableVictor (Pang Hau) Tan
Regional President - APAC
sell
$617k
3,000 shares
-21%+86% from low0% from high
73NotablePatrick John Jermain
Exec. VP & CFO
sell
$732k
3,587 shares
-18%+77% from low-4% from high
58ModerateAngelo Michael Ninivaggi Jr
Exec VP, CAO, Gen Coun & Secy
sell
$874k
4,303 shares
-18%+81% from low-2% from high
50ModerateDean A Foate
director, other
sell
$1.0M
5,000 shares
-25%+85% from low0% from high
62NotablePatrick John Jermain
Exec. VP & CFO
sell
$988k
4,841 shares
-19%+84% from low-1% from high
50ModerateTodd P. Kelsey
President & CEO
sell
$1.7M
8,120 shares
-9%+84% from low-1% from high
42ModerateMichael J. Running
Regional President - AMER
sell
$190k
926 shares
-42%+85% from low0% from high
18WeakKaren Marie Rapp
director
sell
$72k
500 shares
-6%+29% from low-16% from high
65NotableOliver K. Mihm
Exec VP & COO
sell
$333k
2,327 shares
-11%+29% from low-16% from high
42ModerateAngelo Michael Ninivaggi Jr
Exec VP, CAO, Gen Coun & Secy
sell
$195k
1,347 shares
-6%+30% from low-16% from high
51ModeratePatrick John Jermain
Exec. VP & CFO
sell
$287k
2,000 shares
-11%+30% from low-16% from high
58ModerateOliver K. Mihm
Exec VP & COO
sell
$255k
1,748 shares
-8%+32% from low-14% from high
50ModerateAngelo Michael Ninivaggi Jr
Exec VP, CAO, Gen Coun & Secy
sell
$363k
2,500 shares
-11%+32% from low-14% from high
42ModerateTodd P. Kelsey
President & CEO
sell
$786k
5,500 shares
-9%+29% from low-16% from high
61NotablePatrick John Jermain
Exec. VP & CFO
sell
$285k
1,998 shares
-10%+29% from low-16% from high
17WeakTodd P. Kelsey
President & CEO
sell
$216k
1,500 shares
-2%+31% from low-15% from high
32WeakTodd P. Kelsey
President & CEO
sell
$202k
1,500 shares
-2%+22% from low-21% from high
18WeakKaren Marie Rapp
director
sell
$70k
500 shares
-5%+23% from low-20% from high
67NotablePatrick John Jermain
Exec. VP & CFO
sell
$344k
2,500 shares
-11%+25% from low-19% from high
61NotableVictor (Pang Hau) Tan
Regional President - APAC
sell
$417k
3,000 shares
-26%+26% from low-18% from high
42ModerateAngelo Michael Ninivaggi Jr
Exec VP, CAO, Gen Coun & Secy
sell
$217k
1,576 shares
-6%+24% from low-20% from high
58ModerateOliver K. Mihm
Exec VP & COO
sell
$274k
2,102 shares
-9%+18% from low-23% from high
61NotablePatrick John Jermain
Exec. VP & CFO
sell
$284k
2,178 shares
-8%+15% from low-25% from high
32WeakTodd P. Kelsey
President & CEO
sell
$188k
1,500 shares
-2%+13% from low-27% from high
17WeakTodd P. Kelsey
President & CEO
sell
$202k
1,500 shares
-2%+23% from low-20% from high
32WeakTodd P. Kelsey
President & CEO
sell
$195k
1,500 shares
-2%+18% from low-23% from high

Planned sales

Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales

FiledSellerSharesValueSale datePast 3 months
Aug 19, 2026 Todd P. Kelsey
President & CEO
4,500
0.02% of outstanding
$1.2MAug 19, 2026$1.8M
Aug 11, 2026 SCHROCK MICHAEL V
Director
4,000
0.01% of outstanding
$1.1MAug 11, 2026none
Jun 5, 2026 MICHAEL J RUNNING
Officer
510
0.00% of outstanding
$139kJun 5, 2026none
Jun 3, 2026 TODD P KELSEY & KELLY M LIV T U/A DTD 03/02/2009
Officer, Director
1,000
0.00% of outstanding
$290kJun 3, 2026$3.0M
Jun 1, 2026 KAREN M RAPP
Director
1,000
0.00% of outstanding
$268kJun 1, 2026none
May 27, 2026 TODD P KELSEY & KELLY M LIV T U/A DTD 03/02/2009
Officer, Director
1,000
0.00% of outstanding
$275kMay 27, 2026$2.7M
May 20, 2026 Todd P. Kelsey
President & CEO
4,500
0.02% of outstanding
$1.1MMay 20, 2026$1.7M
May 13, 2026 PATRICK JERMAIN
Officer
3,312
0.01% of outstanding
$870kMay 13, 2026$1.0M
May 11, 2026 PANG HAU (VICTOR) TAN
Officer
3,000
0.01% of outstanding
$814kMay 11, 2026none
May 8, 2026 ANGELO M NINIVAGGI
Officer
3,270
0.01% of outstanding
$866kMay 8, 2026$604k
May 8, 2026 SCHROCK MICHAEL V
Director
7,550
0.03% of outstanding
$2.0MMay 8, 2026none
May 7, 2026 ANGELO M NINIVAGGI
Officer
2,298
0.01% of outstanding
$604kMay 7, 2026none
May 6, 2026 TODD P KELSEY & KELLY M LIV T U/A DTD 03/02/2009
Officer, Director
1,000
0.00% of outstanding
$271kMay 6, 2026$3.1M
May 5, 2026 Patrick J. Jermain
Exec VP & CFO
3,815
0.01% of outstanding
$1.0MMay 5, 2026$467k
May 5, 2026 TODD P KELSEY & KELLY M LIV T U/A DTD 03/02/2009
Officer, Director
3,000
0.01% of outstanding
$805kMay 5, 2026$2.3M
May 4, 2026 TODD P KELSEY & KELLY M LIV T U/A DTD 03/02/2009
Officer, Director
2,403
0.01% of outstanding
$634kMay 4, 2026$1.7M
Feb 25, 2026 Randy J Martinez
Director
1,000
0.00% of outstanding
$203kFeb 25, 2026none
Feb 25, 2026 MICHAEL J RUNNING
Officer
700
0.00% of outstanding
$144kFeb 25, 2026$190k
Feb 18, 2026 Todd P. Kelsey
President & CEO
9,731
0.04% of outstanding
$1.9MFeb 18, 2026$1.7M
Feb 18, 2026 OLIVER MIHM
Officer
9,541
0.04% of outstanding
$1.9MFeb 18, 2026$776k
Feb 17, 2026 OLIVER MIHM
Officer
2,226
0.01% of outstanding
$442kFeb 17, 2026$333k
Feb 12, 2026 PATRICK JERMAIN
Officer
2,321
0.01% of outstanding
$467kFeb 12, 2026$1.7M
Feb 12, 2026 FRANK B ZYCINSKI
Officer
1,399
0.01% of outstanding
$288kFeb 12, 2026none
Feb 6, 2026 PANG HAU (VICTOR) TAN
Officer
3,000
0.01% of outstanding
$617kFeb 6, 2026none
Feb 5, 2026 ANGELO M NINIVAGGI
Officer
4,303
0.02% of outstanding
$874kFeb 5, 2026$558k

Transactions

The newest 50 of 337 rows filed, every code.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
Sep 16, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-1,500$242.41$364k64,38826 d ago
Sep 15, 2026David Westen Abuhl
Sr. VP & CFO
MOption exercise
Common Stock, $.01 par value
+2,500--2,50027 d ago
Sep 15, 2026David Westen Abuhl
Sr. VP & CFO
FTax withholding
Common Stock, $.01 par value
-800$238.53$191k1,70027 d ago
Sep 15, 2026David Westen Abuhl
Sr. VP & CFO
MOption exercise
Restricted Stock Unitsderivative
-2,500--5,00027 d ago
Aug 31, 2026Karen Marie Rapp
director
SOpen-market sale
Common Stock, $.01 par value10b5-1
-500$240.87$120k7,53542 d ago
Aug 19, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-319$248.79$79k67,069Aug 20, 2026
Aug 19, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-681$251.09$171k66,388Aug 20, 2026
Aug 19, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-500$252.23$126k65,888Aug 20, 2026
Aug 11, 2026Michael Schrock V
director
SOpen-market sale
Common Stock, $.01 par value10b5-1
-4,000$275.00$1.1M40,329Aug 13, 2026
Jul 15, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-500$260.51$130k68,388Jul 16, 2026
Jul 15, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-1,000$261.07$261k67,388Jul 16, 2026
Jun 17, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-100$292.11$29k70,288Jun 18, 2026
Jun 17, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-300$294.19$88k69,988Jun 18, 2026
Jun 17, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-748$295.15$221k69,240Jun 18, 2026
Jun 17, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-352$296.09$104k68,888Jun 18, 2026
Jun 5, 2026Michael J. Running
Regional President - AMER
SOpen-market sale
Common Stock, $.01 par value
-510$272.17$139k665Jun 8, 2026
Jun 3, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value
-1,000$290.00$290k70,388Jun 4, 2026
Jun 1, 2026Karen Marie Rapp
director
SOpen-market sale
Common Stock, $.01 par value10b5-1
-500$270.00$135k8,035Jun 3, 2026
May 27, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value
-1,000$274.75$275k71,388May 29, 2026
May 20, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-700$252.20$177k73,188May 22, 2026
May 20, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-800$253.26$203k72,388May 22, 2026
May 11, 2026Victor (Pang Hau) Tan
Regional President - APAC
SOpen-market sale
Common Stock, $.01 par value
-3,000$271.23$814k10,457May 13, 2026
May 7, 2026Angelo Michael Ninivaggi Jr
EVP, Chief Legal & PAO & Secy
SOpen-market sale
Common Stock, $.01 par value
-1,294$262.43$340k20,540May 11, 2026
May 7, 2026Angelo Michael Ninivaggi Jr
EVP, Chief Legal & PAO & Secy
SOpen-market sale
Common Stock, $.01 par value
-945$263.66$249k19,595May 11, 2026
May 7, 2026Angelo Michael Ninivaggi Jr
EVP, Chief Legal & PAO & Secy
SOpen-market sale
Common Stock, $.01 par value
-59$264.38$16k19,536May 11, 2026
May 8, 2026Angelo Michael Ninivaggi Jr
EVP, Chief Legal & PAO & Secy
SOpen-market sale
Common Stock, $.01 par value
-1,484$264.11$392k18,052May 11, 2026
May 8, 2026Angelo Michael Ninivaggi Jr
EVP, Chief Legal & PAO & Secy
SOpen-market sale
Common Stock, $.01 par value
-1,562$265.18$414k16,490May 11, 2026
May 8, 2026Angelo Michael Ninivaggi Jr
EVP, Chief Legal & PAO & Secy
SOpen-market sale
Common Stock, $.01 par value
-224$266.01$60k16,266May 11, 2026
May 6, 2026Patrick John Jermain
Exec. VP & CFO
IDiscretionary transaction
Common Stock, $.01 par valueindirect: 401(k)
-3,815$268.94$1.0M0May 8, 2026
May 4, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value
-1,403$263.00$369k78,888May 6, 2026
May 4, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value
-1,000$265.15$265k77,888May 6, 2026
May 5, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value
-1,000$267.10$267k76,888May 6, 2026
May 5, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value
-1,000$268.75$269k75,888May 6, 2026
May 5, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value
-1,000$269.50$270k74,888May 6, 2026
May 6, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value
-1,000$270.75$271k73,888May 6, 2026
Apr 15, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-1,500$224.09$336k80,291Apr 16, 2026
Mar 18, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-1,500$194.24$291k81,791Mar 19, 2026
Feb 27, 2026Karen Marie Rapp
director
SOpen-market sale
Common Stock, $.01 par value10b5-1
-500$195.59$98k8,535Mar 2, 2026
Feb 25, 2026Randy J Martinez
director
SOpen-market sale
Common Stock, $.01 par value
-1,000$203.14$203k5,201Feb 27, 2026
Feb 25, 2026Michael J. Running
Regional President - AMER
SOpen-market sale
Common Stock, $.01 par value
-700$205.47$144k1,175Feb 27, 2026
Feb 17, 2026Michael J. Running
Regional President - AMER
MOption exercise
Common Stock, $.01 par value
+1,096--2,391Feb 19, 2026
Feb 17, 2026Angelo Michael Ninivaggi Jr
EVP, Chief Legal & PAO & Secy
MOption exercise
Common Stock, $.01 par value
+3,275--23,374Feb 19, 2026
Feb 17, 2026Todd P. Kelsey
President & CEO
MOption exercise
Common Stock, $.01 par value10b5-1
+18,726--97,324Feb 19, 2026
Feb 17, 2026Victor (Pang Hau) Tan
Regional President - APAC
MOption exercise
Common Stock, $.01 par value
+2,022--13,457Feb 19, 2026
Feb 17, 2026Angelo Michael Ninivaggi Jr
EVP, Chief Legal & PAO & Secy
FTax withholding
Common Stock, $.01 par value
-1,540$195.95$302k21,834Feb 19, 2026
Feb 17, 2026Michael J. Running
Regional President - AMER
FTax withholding
Common Stock, $.01 par value
-516$195.95$101k1,875Feb 19, 2026
Feb 17, 2026Victor (Pang Hau) Tan
Regional President - APAC
AGrant or award
Performance Stock Unitsderivative
+602--2,022Feb 19, 2026
Feb 17, 2026Oliver K. Mihm
Exec VP & COO
MOption exercise
Common Stock, $.01 par value
+4,357--26,624Feb 19, 2026
Feb 17, 2026Todd P. Kelsey
President & CEO
FTax withholding
Common Stock, $.01 par value10b5-1
-8,802$195.95$1.7M88,522Feb 19, 2026
Feb 18, 2026Todd P. Kelsey
President & CEO
SOpen-market sale
Common Stock, $.01 par value10b5-1
-1,155$194.47$225k87,367Feb 19, 2026
50 of 337 rows shown.

Insiders

Everyone who has filed a Form 4 here.

Questions about PLXS

Answered from the filings on this page, as of the latest one.

Are insiders buying PLXS?

As of Sep 17, 2026, SEC Form 4 filings show 0 open-market buys worth $0 by 0 insiders and 5 open-market sells worth $2.4M by 3 insiders at PLEXUS CORP in the last 90 days, net -$2.4M. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.

Who was the last insider to trade PLXS on the open market?

Todd P. Kelsey (President & CEO) sold $364k of PLXS on Sep 16, 2026 and filed the Form 4 on Sep 17, 2026. InsiderTell scored 20 (weak), under a 10b5-1 plan.

How many insiders file Form 4 at PLEXUS CORP?

12 people have filed a Form 4 at PLEXUS CORP, among them David Westen Abuhl (Sr. VP & CFO), Dean A Foate (director), Patrick John Jermain (Exec. VP & CFO). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

PLXS insider trading: PLEXUS CORP | InsiderTell