Steel Dynamics's three largest insider shareholders as of September 09, 2026 are Richard P Jr Teets (Executive Vice President, 4.98Mn shares), Richard P Jr Teets (Executive Vice President, 4.98Mn shares), Mark D Millett (Chairman And Ceo, 3.02Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Richard P Jr Teets | Executive Vice President | 4,980,252 | 0 | 4,980,252 | 46.7% | 07 May, 2026 |
| 2 | Mark D Millett | Chairman And Ceo | 3,016,401 | 0 | 3,016,401 | 28.3% | 28 Jul, 2026 |
| 3 | Keith E Busse | Chairman And Ceo | 701,717 | 0 | 701,717 | 6.6% | 18 Apr, 2023 |
| 4 | Theresa E Wagler | Executive Vice President Cfo | 495,038 | 0 | 495,038 | 4.6% | 13 Mar, 2026 |
| 5 | Russell B Rinn | Executive Vice President | 301,502 | 0 | 301,502 | 2.8% | 31 Aug, 2022 |
| 6 | Barry Schneider | President And Coo | 246,399 | 0 | 246,399 | 2.3% | 13 Mar, 2026 |
| 7 | Glenn Pushis | Senior Vice President | 133,008 | 0 | 133,008 | 1.2% | 12 Jan, 2026 |
| 8 | Miguel Alvarez | Senior Vice President | 122,257 | 0 | 122,257 | 1.1% | 24 Apr, 2026 |
| 9 | James Stanley Anderson | Senior Vice President | 102,837 | 0 | 102,837 | 1.0% | 08 Jun, 2026 |
| 10 | Gabriel Shaheen | Director | 82,520 | 0 | 82,520 | 0.8% | 13 Apr, 2026 |
| 11 | Frank D Byrne | Director | 82,326 | 0 | 82,326 | 0.8% | 22 Apr, 2022 |
| 12 | Christopher A Graham | Senior Vice President | 68,747 | 0 | 68,747 | 0.6% | 15 May, 2026 |
| 13 | James C Marcuccilli | Director | 61,985 | 0 | 61,985 | 0.6% | 11 Oct, 2024 |
| 14 | Traci M Dolan | Director | 58,970 | 0 | 58,970 | 0.6% | 14 Jul, 2026 |
| 15 | Bradley S Seaman | Director | 51,600 | 0 | 51,600 | 0.5% | 14 Jul, 2026 |
| 16 | Kenneth W. Cornew | Director | 32,013 | 0 | 32,013 | 0.3% | 14 Jul, 2026 |
| 17 | Richard A Poinsatte | Senior Vice President | 28,418 | 0 | 28,418 | 0.3% | 15 May, 2026 |
| 18 | Sheree L Bargabos | Director | 27,105 | 0 | 27,105 | 0.3% | 14 Jul, 2026 |
| 19 | Chad Bickford | Vice President | 24,025 | 0 | 24,025 | 0.2% | 04 May, 2026 |
| 20 | Steven Alan Sonnenberg | Director | 19,561 | 0 | 19,561 | 0.2% | 15 Apr, 2024 |
| 21 | Luis Manuel Sierra | Director | 11,523 | 0 | 11,523 | 0.1% | 14 Jul, 2026 |
| 22 | Jennifer L Hamann | Director | 5,286 | 0 | 5,286 | 0.0% | 01 Jun, 2026 |
| 23 | Matthew Lane Bell | Vice President | 2,017 | 0 | 2,017 | 0.0% | 24 Feb, 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 |
|---|---|---|---|---|---|---|---|---|
| 13 Aug, 2026 | Jennifer L Hamann | Director | Acquired A | 72 | $0.00 | $0 | 5,376 | Direct |
| 28 Jul, 2026 | Mark D Millett | Chairman And Ceo | Disposed G | 300 | $0.00 | $0 | 3,016,401 | Direct |
| 10 Jul, 2026 | Luis Manuel Sierra | Director | Acquired A | 7 | $0.00 | $0 | 11,523 | Direct |
| 10 Jul, 2026 | Jennifer L Hamann | Director | Acquired A | 18 | $0.00 | $0 | 5,304 | Direct |
| 10 Jul, 2026 | Bradley S Seaman | Director | Acquired A | 109 | $0.00 | $0 | 51,600 | Direct |
| 10 Jul, 2026 | Traci M Dolan | Director | Acquired A | 102 | $0.00 | $0 | 58,970 | Direct |
| 10 Jul, 2026 | Kenneth W. Cornew | Director | Acquired A | 2 | $0.00 | $0 | 32,013 | Direct |
| 10 Jul, 2026 | Sheree L Bargabos | Director | Acquired A | 43 | $0.00 | $0 | 27,105 | Direct |
| 05 Jun, 2026 | James Stanley Anderson | Senior Vice President | Disposed S | 1,100 | $267.35 | $294.09K | 111,737 | Direct |
| 05 Jun, 2026 | James Stanley Anderson | Senior Vice President | Disposed S | 4,177 | $268.42 | $1.12Mn | 107,560 | Direct |
| 05 Jun, 2026 | James Stanley Anderson | Senior Vice President | Disposed S | 4,401 | $269.22 | $1.18Mn | 103,159 | Direct |
| 05 Jun, 2026 | James Stanley Anderson | Senior Vice President | Disposed S | 322 | $269.93 | $86.92K | 102,837 | Direct |
| 01 Jun, 2026 | Luis Manuel Sierra | Director | Acquired A | 712 | $0.00 | $0 | 11,516 | Direct |
| 01 Jun, 2026 | Bradley S Seaman | Director | Acquired A | 712 | $0.00 | $0 | 51,491 | Direct |
| 01 Jun, 2026 | Traci M Dolan | Director | Acquired A | 712 | $0.00 | $0 | 58,868 | Direct |
| 01 Jun, 2026 | Kenneth W. Cornew | Director | Acquired A | 712 | $0.00 | $0 | 32,011 | Direct |
| 01 Jun, 2026 | Jennifer L Hamann | Director | Acquired A | 712 | $0.00 | $0 | 5,286 | Direct |
| 13 May, 2026 | Christopher A Graham | Senior Vice President | Disposed S | 2,999 | $236.52 | $709.32K | 74,748 | Direct |
| 14 May, 2026 | Richard A Poinsatte | Senior Vice President | Disposed G | 200 | $0.00 | $0 | 28,418 | Direct |
| 13 May, 2026 | Christopher A Graham | Senior Vice President | Disposed S | 3,000 | $237.01 | $711.03K | 71,748 | Direct |