Mueller Industries's three largest insider shareholders as of September 29, 2026 are Gary S Gladstein (Director, 4.64Mn shares), Gregory L. Christopher (Chairman Of The Board Ceo, 2.15Mn shares), Steffen Sigloch (Chief Manufacturing Officer, 1.91Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Steffen Sigloch | Chief Manufacturing Officer | 1,906,528 | 0 | 1,906,528 | 22.6% | 31 Jul, 2025 |
| 2 | Gregory L. Christopher | Chairman Of The Board Ceo | 1,598,850 | 145,040 | 1,743,890 | 20.7% | 12 Aug, 2026 |
| 3 | Terry Hermanson | Director | 1,407,520 | 0 | 1,407,520 | 16.7% | 11 May, 2026 |
| 4 | Jeffrey Andrew Martin | Evp, Cfo Treasurer | 572,716 | 0 | 572,716 | 6.8% | 17 Aug, 2026 |
| 5 | Gary S Gladstein | Director | 513,600 | 0 | 513,600 | 6.1% | 11 May, 2026 |
| 6 | Charles P Jr Herzog | Director | 137,376 | 337,360 | 474,736 | 5.6% | 11 May, 2026 |
| 7 | Elizabeth M Donovan | Director | 449,360 | 0 | 449,360 | 5.3% | 11 May, 2026 |
| 8 | William C. Drummond | Director | 295,760 | 0 | 295,760 | 3.5% | 11 May, 2026 |
| 9 | Christopher John Miritello | Evp, Gen. Counsel, Secretary | 271,036 | 0 | 271,036 | 3.2% | 05 Aug, 2026 |
| 10 | Gennaro J Fulvio | Director | 0 | 249,592 | 249,592 | 3.0% | 06 May, 2022 |
| 11 | Anthony Steinriede | Vp Corporate Controller | 188,688 | 0 | 188,688 | 2.2% | 27 Oct, 2021 |
| 12 | John B Hansen | Executive Vice President | 181,078 | 0 | 181,078 | 2.1% | 05 Aug, 2026 |
| 13 | Daniel Pieralisi | Executive Vp Admin | 89,108 | 0 | 89,108 | 1.1% | 05 Aug, 2026 |
| 14 | Scott Jay Goldman | Director | 79,734 | 0 | 79,734 | 0.9% | 27 Aug, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 27 Aug, 2026 | Scott Jay Goldman | Director | Disposed S | 2,000 | $64.08 | $128.16K | 79,734 | Direct |
| 13 Aug, 2026 | Jeffrey Andrew Martin | Evp, Cfo Treasurer | Disposed S | 86,209 | $67.03 | $5.78Mn | 572,716 | Direct |
| 10 Aug, 2026 | Gregory L. Christopher | Chairman Of The Board Ceo | Disposed S | 70,000 | $69.09 | $4.84Mn | 70,000 | Indirect |
| 11 Aug, 2026 | Gregory L. Christopher | Chairman Of The Board Ceo | Disposed S | 70,000 | $69.43 | $4.86Mn | 75,040 | Indirect |
| 11 Aug, 2026 | Gregory L. Christopher | Chairman Of The Board Ceo | Disposed S | 200,000 | $68.44 | $13.69Mn | 1,598,850 | Direct |
| 05 Aug, 2026 | Christopher John Miritello | Evp, Gen. Counsel, Secretary | Acquired A | 9,000 | $0.00 | $0 | 271,036 | Direct |
| 05 Aug, 2026 | Daniel Pieralisi | Executive Vp Admin | Acquired A | 6,000 | $0.00 | $0 | 89,108 | Direct |
| 05 Aug, 2026 | Jeffrey Andrew Martin | Evp, Cfo Treasurer | Acquired A | 34,000 | $0.00 | $0 | 658,925 | Direct |
| 05 Aug, 2026 | Gregory L. Christopher | Chairman Of The Board Ceo | Acquired A | 125,000 | $0.00 | $0 | 1,798,850 | Direct |
| 04 Aug, 2026 | John B Hansen | Director | Disposed S | 2,444 | $67.72 | $165.51K | 181,328 | Direct |
| 04 Aug, 2026 | John B Hansen | Director | Disposed G | 250 | $0.00 | $0 | 181,078 | Direct |
| 04 Aug, 2026 | John B Hansen | Director | Disposed S | 1,000 | $68.13 | $68.13K | 29,000 | Indirect |
| 30 Jul, 2026 | Daniel Pieralisi | Executive Vp Admin | Disposed F | 1,808 | $66.57 | $120.36K | 83,108 | Direct |
| 30 Jul, 2026 | Jeffrey Andrew Martin | Evp, Cfo Treasurer | Acquired A | 72,000 | $0.00 | $0 | 682,716 | Direct |
| 30 Jul, 2026 | Gregory L. Christopher | Chairman Of The Board Ceo | Acquired A | 270,000 | $0.00 | $0 | 1,879,822 | Direct |
| 30 Jul, 2026 | Jeffrey Andrew Martin | Evp, Cfo Treasurer | Disposed F | 57,791 | $66.57 | $3.85Mn | 624,925 | Direct |
| 30 Jul, 2026 | Gregory L. Christopher | Chairman Of The Board Ceo | Disposed F | 205,972 | $66.57 | $13.71Mn | 1,673,850 | Direct |
| 29 May, 2026 | Scott Jay Goldman | Director | Disposed S | 2,000 | $7.99 | $15.99K | 653,872 | Direct |
| 08 May, 2026 | John B Hansen | Director | Acquired A | 1,222 | $0.00 | $0 | 1,470,176 | Direct |
| 08 May, 2026 | Charles P Jr Herzog | Director | Acquired A | 1,222 | $0.00 | $0 | 156,928 | Direct |