Comparable stake leader
BlackRock, Inc.
SEC ownership of STEEL DYNAMICS INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001022671.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
13 Aug 2026
- Public ticker
- STLD on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
13 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001022671
- Issuer location
- Fort Wayne, IN
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of STEEL DYNAMICS INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
13 Aug 2026
13F
13D/G
3/4/5
Lead comparable stake: 7.8%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 7.8%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
7.8%
VANGUARD CAPITAL MANAGEMENT LLC
7.1%
FMR LLC
5.4%
STATE STREET CORP
5.2%
Richard P. Teets Jr.
3.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
7.8%
from 13D/G
|
$2,844,500,589
12,396,499 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Capital Management
|
7.1%
from 13D/G
|
$2,042,702,483
8,902,216 shares
|
— | 30 Jun 2026 |
| FMR LLC |
13D/G
13F
Company
|
5.4%
|
$1,771,640,497
7,720,912 shares
|
$0 | 30 Jun 2026 |
| STATE STREET CORP |
13F
13D/G
Company · STATE STREET CORPORATION
|
5.2%
from 13D/G
|
$1,696,482,301
7,376,476 shares
|
— | 30 Jun 2026 |
| Richard P. Teets Jr. |
3/4/5
Director
|
3.6%
|
$926,346,780
5,146,371 shares
|
— | 06 May 2026 |
| Mark D. Millett |
3/4/5
Chairman and CEO, Director
|
2.1%
|
$692,143,373
3,016,401 shares
|
— | 28 Jul 2026 |
| Theresa E. Wagler |
3/4/5
Executive Vice President & CFO
|
0.35%
|
$98,765,031
495,038 shares
|
— | 13 Mar 2026 |
| Barry Schneider |
3/4/5
President and COO
|
0.17%
|
$49,159,064
246,399 shares
|
— | 13 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$8,912,739.
Buys
$0
Insiders: 0
Sells
$8,912,739
Insiders: 5
Net
-$8,912,739
Shares: -39,376
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 39,376
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 10,000 | $0 | $2,687,030 | -$2,687,030 |
| 3-6 | 0 | 21,125 | $0 | $4,882,529 | -$4,882,529 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 8,251 | $0 | $1,343,180 | -$1,343,180 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 23 reporting-owner rows connected to STEEL DYNAMICS INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
23
Largest Forms 3/4/5 holder
Richard P. Teets Jr.
Net 12M change
-$8,912,739
Latest report
13 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Richard P. Teets Jr. | Director | $926,346,780 | Mixed | 06 May 2026 | ||
| Mark D. Millett | Chairman and CEO, Director | $692,143,373 | Median | 28 Jul 2026 | ||
| Theresa E. Wagler | Executive Vice President & CFO | $98,765,031 | Mixed | 13 Mar 2026 | ||
| Keith E. Busse | Director | $86,079,624 | Mixed | 14 Apr 2023 | ||
| Barry Schneider | President and COO | $49,159,064 | Mixed | 13 Mar 2026 | ||
| Russell B. Rinn | Executive Vice President | $37,230,590 | Mixed | 29 Aug 2022 | ||
| Miguel Alvarez | Senior Vice President | $27,852,589 | -$2,431,608 | -8% | Filing P/S | 23 Apr 2026 |
| James Stanley Anderson | Senior Vice President | $27,758,791 | -$2,687,030 | -8.8% | Filing P/S | 05 Jun 2026 |
| Glenn Pushis | Senior Vice President | $22,898,657 | Mixed | 09 Jan 2026 | ||
| Christopher A. Graham | Senior Vice President | $16,286,164 | -$2,131,290 | -12% | Filing P/S | 13 May 2026 |
| Gabriel Shaheen | Director | $14,853,600 | Mixed | 10 Apr 2026 | ||
| Traci M. Dolan | Director | $13,531,256 | Median | 10 Jul 2026 | ||
| Bradley S. Seaman | Director | $11,840,136 | Median | 10 Jul 2026 | ||
| Frank D. Byrne | Director | $10,098,930 | Mixed | 21 Apr 2022 | ||
| Kenneth W. Cornew | Director | $7,345,702 | -$1,124,358 | -13% | Median | 10 Jul 2026 |
| James C. Marcuccilli | Director | $7,334,685 | Mixed | 11 Oct 2024 | ||
| Sheree L. Bargabos | Director | $6,219,513 | Median | 10 Jul 2026 | ||
| Richard A. Poinsatte | Senior Vice President | $5,115,240 | -$538,453 | -9.5% | Mixed | 14 May 2026 |
| Chad Bickford | Vice President | $4,324,500 | Mixed | 01 May 2026 | ||
| Steven Alan Sonnenberg | Director | $2,791,746 | Mixed | 12 Apr 2024 |
Recent insider transactions for STEEL DYNAMICS INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Jennifer L. Hamann | STLD | Common Stock | Award | 1.36% | 72 | 5,376 | 13 Aug 2026 | Direct | ||
| Mark D. Millett | STLD | Common Stock | Gift | -0.01% | -300 | 3,016,401 | 28 Jul 2026 | Direct | ||
| Luis Manuel Sierra | STLD | Common Stock | Award | 0.06% | 7 | 11,523 | 10 Jul 2026 | Direct | ||
| Bradley S. Seaman | STLD | Common Stock | Award | 0.21% | 109 | 51,600 | 10 Jul 2026 | Direct | ||
| Jennifer L. Hamann | STLD | Common Stock | Award | 0.34% | 18 | 5,304 | 10 Jul 2026 | Direct | ||
| Traci M. Dolan | STLD | Common Stock | Award | 0.17% | 102 | 58,970 | 10 Jul 2026 | Direct | ||
| Kenneth W. Cornew | STLD | Common Stock | Award | 0.01% | 2 | 32,013 | 10 Jul 2026 | Direct | ||
| Sheree L. Bargabos | STLD | Common Stock | Award | 0.16% | 43 | 27,105 | 10 Jul 2026 | Direct | ||
| James Stanley Anderson | STLD | Common Stock | Sale | -8.86% | $2,687,030 | $268.70 | -10,000 | 102,837 | 05 Jun 2026 | Direct |
| Bradley S. Seaman | STLD | Common Stock | Award | 1.4% | 712 | 51,491 | 01 Jun 2026 | Direct | ||
| Jennifer L. Hamann | STLD | Common Stock | Award | 15.6% | 712 | 5,286 | 01 Jun 2026 | Direct | ||
| Traci M. Dolan | STLD | Common Stock | Award | 1.22% | 712 | 58,868 | 01 Jun 2026 | Direct | ||
| Kenneth W. Cornew | STLD | Common Stock | Award | 2.27% | 712 | 32,011 | 01 Jun 2026 | Direct | ||
| Sheree L. Bargabos | STLD | Common Stock | Award | 2.7% | 712 | 27,062 | 01 Jun 2026 | Direct | ||
| Luis Manuel Sierra | STLD | Common Stock | Award | 6.59% | 712 | 11,516 | 01 Jun 2026 | Direct | ||
| Richard A. Poinsatte | STLD | Common Stock | Gift | -0.7% | -200 | 28,418 | 14 May 2026 | Direct | ||
| Christopher A. Graham | STLD | Common Stock | Sale | -11.6% | $2,131,290 | $236.81 | -9,000 | 68,747 | 13 May 2026 | Direct |
| Richard A. Poinsatte | STLD | Common Stock | Sale | -7.44% | $538,453 | $234.11 | -2,300 | 28,618 | 12 May 2026 | Direct |
| Jennifer L. Hamann | STLD | Common Stock | Award | 1.76% | 79 | 4,574 | 06 May 2026 | Direct | ||
| Richard P. Teets Jr. | STLD | Common Stock | Award | 158 | 4,980,252 | 06 May 2026 | Direct | |||
| Sheree L. Bargabos | STLD | Common Stock | Award | 0.6% | 158 | 26,350 | 06 May 2026 | Direct | ||
| Chad Bickford | STLD | Common Stock | Tax liability | -0.69% | -166 | 24,025 | 01 May 2026 | Direct | ||
| Miguel Alvarez | STLD | Common Stock | Sale | -3.8% | $1,088,428 | $225.58 | -4,825 | 122,257 | 23 Apr 2026 | Direct |
| Kenneth W. Cornew | STLD | Common Stock | Sale | -13.8% | $1,124,358 | $224.87 | -5,000 | 31,299 | 23 Apr 2026 | Direct |
| Richard P. Teets Jr. | STLD | Common Stock | Award | 9 | 4,980,094 | 10 Apr 2026 | Direct | |||
| Luis Manuel Sierra | STLD | Common Stock | Award | 0.11% | 12 | 10,804 | 10 Apr 2026 | Direct | ||
| Gabriel Shaheen | STLD | Common Stock | Award | 0.19% | 157 | 82,520 | 10 Apr 2026 | Direct | ||
| Bradley S. Seaman | STLD | Common Stock | Award | 0.25% | 129 | 50,779 | 10 Apr 2026 | Direct | ||
| Jennifer L. Hamann | STLD | Common Stock | Award | 0.36% | 16 | 4,495 | 10 Apr 2026 | Direct | ||
| Traci M. Dolan | STLD | Common Stock | Award | 0.21% | 120 | 58,156 | 10 Apr 2026 | Direct | ||
| Kenneth W. Cornew | STLD | Common Stock | Award | 0.01% | 5 | 36,299 | 10 Apr 2026 | Direct | ||
| Sheree L. Bargabos | STLD | Common Stock | Award | 0.22% | 58 | 26,192 | 10 Apr 2026 | Direct | ||
| Richard A. Poinsatte | STLD | Common Stock | Tax liability | -8.15% | -2,744 | 30,918 | 13 Mar 2026 | Direct | ||
| Richard A. Poinsatte | STLD | Common Stock | Award | 22.8% | 6,253 | 33,662 | 13 Mar 2026 | Direct | ||
| James Stanley Anderson | STLD | Common Stock | Tax liability | -5.42% | -6,468 | 112,837 | 13 Mar 2026 | Direct | ||
| James Stanley Anderson | STLD | Common Stock | Award | 14.1% | 14,738 | 119,305 | 13 Mar 2026 | Direct | ||
| Miguel Alvarez | STLD | Common Stock | Tax liability | -5.38% | -7,232 | 127,082 | 13 Mar 2026 | Direct | ||
| Miguel Alvarez | STLD | Common Stock | Award | 14% | 16,479 | 134,314 | 13 Mar 2026 | Direct | ||
| Barry Schneider | STLD | Common Stock | Tax liability | -4.52% | -11,662 | 246,399 | 13 Mar 2026 | Direct | ||
| Barry Schneider | STLD | Common Stock | Award | 11.5% | 26,571 | 258,061 | 13 Mar 2026 | Direct | ||
| Christopher A. Graham | STLD | Common Stock | Tax liability | -8.51% | -7,232 | 77,747 | 13 Mar 2026 | Direct | ||
| Christopher A. Graham | STLD | Common Stock | Award | 24.1% | 16,479 | 84,979 | 13 Mar 2026 | Direct | ||
| Theresa E. Wagler | STLD | Common Stock | Tax liability | -1.81% | -9,114 | 495,038 | 13 Mar 2026 | Direct | ||
| Theresa E. Wagler | STLD | Common Stock | Award | 4.3% | 20,766 | 504,152 | 13 Mar 2026 | Direct | ||
| Mark D. Millett | STLD | Common Stock | Tax liability | -0.68% | -20,625 | 3,016,701 | 13 Mar 2026 | Direct | ||
| Mark D. Millett | STLD | Common Stock | Award | 1.55% | 46,422 | 3,037,326 | 13 Mar 2026 | Direct | ||
| Barry Schneider | STLD | Common Stock | Tax liability | -0.55% | -1,291 | 231,490 | 02 Mar 2026 | Direct | ||
| Theresa E. Wagler | STLD | Common Stock | Tax liability | -0.45% | -2,189 | 483,386 | 24 Feb 2026 | Direct | ||
| Barry Schneider | STLD | Common Stock | Tax liability | -0.7% | -1,642 | 232,781 | 24 Feb 2026 | Direct | ||
| Mark D. Millett | STLD | Common Stock | Tax liability | -0.17% | -5,153 | 2,990,904 | 24 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.