18 insiders reported 200 Form 4 transactions for STEEL DYNAMICS INC (STLD) over the past 18 months (most recent 2026-08-14). Recent activity: Hamann Jennifer L (Director) Buy 72 shares, MILLETT MARK D (Chairman and CEO) Sell 300 shares, BARGABOS SHEREE L (Director) Buy 43 shares, DOLAN TRACI M (Director) Buy 102 shares, Cornew Kenneth W. (Director) Buy 2 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-14 | Hamann Jennifer L | Director | Buy | 72 | $0 |
| 2026-07-28 | MILLETT MARK D | Chairman and CEO | Sell | 300 | $0 |
| 2026-07-14 | BARGABOS SHEREE L | Director | Buy | 43 | $0 |
| 2026-07-14 | DOLAN TRACI M | Director | Buy | 102 | $0 |
| 2026-07-14 | Cornew Kenneth W. | Director | Buy | 2 | $0 |
| 2026-07-14 | Seaman Bradley S | Director | Buy | 109 | $0 |
| 2026-07-14 | Hamann Jennifer L | Director | Buy | 18 | $0 |
| 2026-07-14 | Sierra Luis Manuel | Director | Buy | 7 | $0 |
| 2026-06-08 | Anderson James Stanley | Senior Vice President | Sell | 1,100 | $294,085 |
| 2026-06-08 | Anderson James Stanley | Senior Vice President | Sell | 4,177 | $1.1M |
| 2026-06-08 | Anderson James Stanley | Senior Vice President | Sell | 4,401 | $1.2M |
| 2026-06-08 | Anderson James Stanley | Senior Vice President | Sell | 322 | $86,917 |
| 2026-06-01 | Cornew Kenneth W. | Director | Buy | 712 | $0 |
| 2026-06-01 | Seaman Bradley S | Director | Buy | 712 | $0 |
| 2026-06-01 | Hamann Jennifer L | Director | Buy | 712 | $0 |
| 2026-06-01 | Sierra Luis Manuel | Director | Buy | 712 | $0 |
| 2026-06-01 | BARGABOS SHEREE L | Director | Buy | 712 | $0 |
| 2026-06-01 | DOLAN TRACI M | Director | Buy | 712 | $0 |
| 2026-05-15 | Poinsatte Richard A | Senior Vice President | Sell | 200 | $0 |
| 2026-05-15 | Graham Christopher A | Senior Vice President | Sell | 2,999 | $709,323 |
| 2026-05-15 | Graham Christopher A | Senior Vice President | Sell | 3,000 | $711,030 |
| 2026-05-15 | Graham Christopher A | Senior Vice President | Sell | 3,001 | $710,937 |
| 2026-05-14 | Poinsatte Richard A | Senior Vice President | Sell | 2,300 | $538,453 |
| 2026-05-07 | BARGABOS SHEREE L | Director | Buy | 158 | $0 |
| 2026-05-07 | TEETS RICHARD P JR | Director | Buy | 158 | $0 |
Source: SEC Form 4 filings · as of 2026-08-14