Updated Jul 16, 2026 · Last SEC filing 2026-06-18
PLEXUS CORP (PLXS) has filed 10 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-18. 2 Form 8-K material event filings were reported by PLXS in the last 90 days. 14 Form 144 notices of proposed sale were filed for PLXS stock. InsiderAlpha tracks every PLXS SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Printed Circuit Boards (SIC 3672) |
|---|---|
| SEC CIK | 0000785786 |
| Form 4 filings (90d) | 10 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Form 144 notices (90d) | 14 |
| Latest Form 4 filing | 2026-06-18 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Kelsey Todd P. | President & CEO | S — Open-market sale | 300 | $294.19 | $88K | SEC | |
| Kelsey Todd P. | President & CEO | S — Open-market sale | 352 | $296.09 | $104K | SEC | |
| Kelsey Todd P. | President & CEO | S — Open-market sale | 100 | $292.11 | $29K | SEC | |
| Kelsey Todd P. | President & CEO | S — Open-market sale | 748 | $295.15 | $221K | SEC | |
| Running Michael J. | Regional President - AMER | S — Open-market sale | 510 | $272.17 | $139K | SEC | |
| Kelsey Todd P. | President & CEO | S — Open-market sale | 1.0K | $290.00 | $290K | SEC | |
| Rapp Karen Marie | Director | S — Open-market sale | 500 | $270.00 | $135K | SEC | |
| Kelsey Todd P. | President & CEO | S — Open-market sale | 1.0K | $274.75 | $275K | SEC | |
| Kelsey Todd P. | President & CEO | S — Open-market sale | 700 | $252.20 | $177K | SEC | |
| Kelsey Todd P. | President & CEO | S — Open-market sale | 800 | $253.26 | $203K | SEC | |
| Tan Victor (Pang Hau) | Regional President - APAC | S — Open-market sale | 3.0K | $271.23 | $814K | SEC | |
| Ninivaggi Angelo Michael Jr | EVP, Chief Legal & PAO & Secy | S — Open-market sale | 1.5K | $264.11 | $392K | SEC | |
| Ninivaggi Angelo Michael Jr | EVP, Chief Legal & PAO & Secy | S — Open-market sale | 224 | $266.01 | $60K | SEC | |
| Ninivaggi Angelo Michael Jr | EVP, Chief Legal & PAO & Secy | S — Open-market sale | 1.6K | $265.18 | $414K | SEC | |
| Ninivaggi Angelo Michael Jr | EVP, Chief Legal & PAO & Secy | S — Open-market sale | 945 | $263.66 | $249K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for PLEXUS CORP (PLXS). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Kelsey Todd P. | 14 | $3.10M |
| Ninivaggi Angelo Michael Jr | 6 | $1.47M |
| Jermain Patrick John | 1 | $1.03M |
| Rapp Karen Marie | 1 | $135K |
| Tan Victor (Pang Hau) | 1 | $814K |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in PLXS insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
Open the live PLXS dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.