MUELLER INDUSTRIES INC (MLI) Insider Trading & SEC Filings
Last SEC filing
MUELLER INDUSTRIES INC (MLI) has filed 11 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-31. Insider sales over the same period: 1 transactions worth $256K. 4 Form 8-K material event filings were reported by MLI in the last 90 days. 1 Form 144 notice of proposed sale was filed for MLI stock. InsiderAlpha tracks every MLI SEC filing - Form 4, Form 144, and 8-K - in real time, including Rule 10b5-1 plan detection.
About MUELLER INDUSTRIES INC (MLI)
MUELLER INDUSTRIES INC trades under the ticker MLI. InsiderAlpha tracks 40 primary SEC Form 4 filings from 12 reporting insiders for MLI since 2024, sourced directly from SEC EDGAR.
| Sector | Materials insider trading |
|---|---|
| SIC classification | Rolling Drawing & Extruding of Nonferrous Metals (SIC 3350) |
| SEC CIK | 0000089439 |
90-Day SEC Filing Activity
| Insider sales (90d) | 1 ($256K) |
|---|---|
| Form 4 filings (90d) | 11 |
| Form 8-K filings (90d) | 4 |
| Form 144 notices (90d) | 1 |
| Latest Form 4 filing | 2026-07-31 |
Recent MLI Insider Transactions (Form 4)
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Jeffrey Andrew Martin | EVP, CFO & Treasurer | F - Tax withholding / forfeiture | 57.8K | $66.57 | $3.85M | SEC | |
| Gregory L. Christopher | Chairman of the Board & CEO | A - Grant or award | 270.0K | $0.00 | - | SEC | |
| Jeffrey Andrew Martin | EVP, CFO & Treasurer | A - Grant or award | 72.0K | $0.00 | - | SEC | |
| Daniel Pieralisi | Executive VP - Admin | F - Tax withholding / forfeiture | 1.8K | $66.57 | $120K | SEC | |
| Gregory L. Christopher | Chairman of the Board & CEO | F - Tax withholding / forfeiture | 206.0K | $66.57 | $13.71M | SEC | |
| Scott Jay Goldman | Director | S - Open-market sale [10b5-1] | 2.0K | $127.91 | $256K | SEC | |
| Elizabeth M. Donovan | Director | A - Grant or award | 1.2K | $0.00 | - | SEC | |
| Charles P. Herzog Jr. | Director | G - Bona-fide gift | 1.2K | $0.00 | - | SEC | |
| Gary S. Gladstein | Director | A - Grant or award | 1.2K | $0.00 | - | SEC | |
| Scott Jay Goldman | Director | A - Grant or award | 1.2K | $0.00 | - | SEC | |
| Charles P. Herzog Jr. | Director | A - Grant or award | 1.2K | $0.00 | - | SEC | |
| William C. Drummond | Director | A - Grant or award | 1.2K | $0.00 | - | SEC | |
| Terry Hermanson | Director | A - Grant or award | 1.2K | $0.00 | - | SEC | |
| John B. Hansen | Director | A - Grant or award | 1.2K | $0.00 | - | SEC | |
| Charles P. Herzog Jr. | Director | G - Bona-fide gift | 1.2K | $0.00 | - | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for MUELLER INDUSTRIES INC (MLI). Updated in real time as new filings are submitted to the SEC.
Most-Active MLI Insiders - Last 90 Days
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Charles P. Herzog Jr. | 3 | - |
| Gregory L. Christopher | 2 | $13.71M |
| Jeffrey Andrew Martin | 2 | $3.85M |
| Scott Jay Goldman | 2 | $256K |
| Terry Hermanson | 1 | - |
Recent MLI Form 8-K Material Events
- - Item 2.02, 9.01 [SEC]
- - Item 5.03, 9.01 [SEC]
- - Item 8.01, 9.01 [SEC]
- - Item 5.07, 8.01, 9.01 [SEC]
- - Item 2.02, 9.01 · Earnings · neutral [SEC]
Mueller Industries announced first quarter 2026 earnings results for the quarter ended March 28, 2026 via press release on April 21, 2026. The filing provides standard quarterly financial results without explicit beat/miss or guidance language.
Recent MLI Form 144 Notices of Proposed Sale
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.
Recent Insider Filings
- - Jeffrey Andrew Martin (EVP, CFO & Treasurer)
- - Daniel Pieralisi (Executive VP - Admin)
- - Gregory L. Christopher (Chairman of the Board & CEO)
- - Scott Jay Goldman (Director)
- - Terry Hermanson (Director)
Form 4 Transaction Code Reference
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in MLI 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 |
MLI Insider Trading - FAQ
- What is the latest insider trade for MLI?
- MUELLER INDUSTRIES INC (MLI) had 11 insider filings in the last 90 days, with the most recent on 2026-07-31. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
- How many insiders are buying MLI stock?
- 0 insider purchases of MLI were filed in the last 90 days.
- How many insiders are selling MLI stock?
- 1 insider sale of MLI was filed in the last 90 days, totaling $256K.
- Where can I see MLI SEC filings (Form 4, 10-K, 10-Q, 8-K)?
- This page tracks MLI Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Learn More
- What is SEC Form 4?
- How to read insider buying signals
- Rule 10b5-1 trading plans explained
- The cluster buying signal
Open the live MLI dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.