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Steel Dynamics STLD

Steel Dynamics is the 299th largest S&P 500 company by market cap, worth $34.3 billion. 9 directors have filed with the SEC in the last 12 months (who counts), 1 of them an executive. 9 other officers are on file. At 30 Jun 2026, Vanguard was its largest institutional holder, with 11.8% of the company.

Chair and CEO
Mark D. Millett
Sector
Materials
Sub-industry
Steel
Headquarters
Fort Wayne, Indiana
Founded
1993
More
Wikipedia
Market cap
$34.3B
299th largest, 23 Oct 2026 close
Revenue
$18.2B
Fiscal year 2025
Price to sales
1.9
Market cap over revenue
Employees
14,400
10-K, 31 Dec 2025
Market cap per employee
$2.4M
Market cap over employees
Connections
2
S&P 500 companies sharing a director or officer

Largest institutional holders

Each fund group's share of Steel Dynamics. Where a company has several share classes, the share is of its total value.

13F filings for the quarter to 30 Jun 2026

These five hold 33.5% of Steel Dynamics.

Source: SEC Form 13F data sets, SEC XBRL shares outstanding 路 All holders

Board and officers

2 people here also hold roles at other S&P 500 companies.

Roles filed up to 30 Sep 2026

NameTitle
Directors (9)
Mark D. MillettChairman and CEOChairman and CEO
Sheree L. BargabosDirectorDirector
Kenneth W. CornewDirectorDirector
Traci M. DolanDirectorDirector
Jennifer L. HamannDirectorAlso at Union PacificDirector
Bradley S. SeamanDirectorDirector
Gabriel ShaheenDirectorDirector
Luis Manuel SierraDirectorDirector
Richard P. Teets Jr.DirectorDirector
Officers (9)
Theresa E. WaglerExecutive Vice President & CFOAlso at CF IndustriesLast filed 13 Mar 2026Executive Vice President & CFO
Miguel AlvarezSenior Vice PresidentLast filed 24 Apr 2026Senior Vice President
James Stanley AndersonSenior Vice PresidentLast filed 8 Jun 2026Senior Vice President
Matthew Lane BellVice PresidentLast filed 24 Feb 2026Vice President
Chad BickfordVice PresidentLast filed 4 May 2026Vice President
Christopher A. GrahamSenior Vice PresidentLast filed 15 May 2026Senior Vice President
Richard A. PoinsatteSenior Vice PresidentLast filed 15 May 2026Senior Vice President
Glenn PushisSenior Vice PresidentLast filed 12 Jan 2026Senior Vice President
Barry SchneiderPresident and COOLast filed 13 Mar 2026President and COO

Source: SEC insider filings (Forms 3, 4 and 5), Steel Dynamics' Form 4 filings 路 All directors and officers

Companies that share people with Steel Dynamics

Each person's title here, then at the other company.

  • CF Industries CF
    • Theresa E. Wagler: Executive Vice President & CFO here, Director there
  • Union Pacific UNP
    • Jennifer L. Hamann: Director here, EVP & Chief Financial Officer there

Source: SEC insider filings 路 See the whole network

Steel Dynamics' market cap since December 2008

Marked weeks are changes in the share count, such as a merger, not market moves.

Weekly, up to 23 Oct 2026

Show equal percentage changes as equal steps.
201020122014201620182020202220242026$34.3B

Source: Yahoo Finance closing prices, SEC XBRL shares outstanding

Workforce

Headcount at 31 Dec 2025

Employees
14,400
The Steel Dynamics team consisted of approximately 14,400 full-time team members at December 31, 2025.
Steel Dynamics Form 10-K

Source: Steel Dynamics Form 10-K

Insider trades

Open-market buys and sales by directors and officers. Grants, option exercises and shares withheld for tax are left out.

Trades from 30 Sep 2025 to 30 Sep 2026

Directors and officers sold $8.9 million of stock in 6 sales and made no open-market purchases in the 12 months to 30 Sep 2026.

DatePersonTitleTypeSharesValue
5 Jun 2026SaleJames Stanley AndersonSenior Vice PresidentSenior Vice PresidentSale10,000$2.7M
13 May 2026SaleChristopher A. GrahamSenior Vice PresidentSenior Vice PresidentSale9,000$2.1M
12 May 2026SaleRichard A. PoinsatteSenior Vice PresidentSenior Vice PresidentSale2,300$538K
23 Apr 2026SaleKenneth W. CornewDirectorDirectorSale5,000$1.1M
23 Apr 2026SaleMiguel AlvarezSenior Vice PresidentSenior Vice PresidentSale4,825$1.1M
29 Oct 2025SaleMiguel AlvarezSenior Vice PresidentSenior Vice PresidentSale8,251$1.3M

Source: SEC insider transactions data sets, Steel Dynamics' Form 4 filings

Trades by members of Congress and officials

Trades members of Congress and senior executive branch officials disclosed, including their families'. Amounts are filed as ranges.

Trades from 20 Oct 2023 to 20 Oct 2026

4 people disclosed 6 purchases and 3 sales of Steel Dynamics stock since October 2023.

DateMember or officialTypeAmount
11 May 2026Donald J Trump (President)President 路 BoughtPurchase$15,001 to $50,000$15K to $50K
27 Mar 2026Alan Armstrong (Senate, R-OK)Senate, R-OK 路 BoughtPurchase$1,001 to $15,000$1K to $15K
9 Jan 2026Gilbert Cisneros (House, D-CA)House, D-CA 路 BoughtPurchase$1,001 to $15,000$1K to $15K
4 Aug 2025Rohit Khanna (House, D-CA)House, D-CA 路 BoughtPurchase$1,001 to $15,000$1K to $15K
25 Apr 2025Rohit Khanna (House, D-CA)House, D-CA 路 SoldSale$1,001 to $15,000$1K to $15K
12 Mar 2025Rohit Khanna (House, D-CA)House, D-CA 路 SoldSale$1,001 to $15,000$1K to $15K
6 Mar 2025Rohit Khanna (House, D-CA)House, D-CA 路 BoughtPurchase$1,001 to $15,000$1K to $15K
25 Feb 2025Rohit Khanna (House, D-CA)House, D-CA 路 BoughtPurchase$1,001 to $15,000$1K to $15K
8 Jul 2024Donald J Trump (President)President 路 SoldSale$15,001 to $50,000$15K to $50K

Source: House, Senate and OGE disclosures via the Congress trading monitor

Not on file: no WARN layoff notices under its own name since October 2023.