Steel Dynamics, Inc.
Steel Dynamics, Inc. is a Public Limited Company registered in United States, and its current status with Indiana Secretary of State — INBiz is active. The company was incorporated on 1 January 1993 and lists its registered address as Fort Wayne, United States. 5 shareholders are on record for Steel Dynamics, Inc., and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Indiana Secretary of State — INBiz and was last updated on 15 September 2026.
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Shareholders
5
Five shareholders are currently on record for Steel Dynamics, Inc., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing.
The largest of these is Vanguard Group Inc, holding 21.3% — the largest recorded stake — followed by iShares Trust-iShares Core S&P 500 ETF at 2.2%; the remaining 3 shareholders shown hold smaller stakes.
Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| Vanguard Group Inc | 21.3% | Indiana Secretary of State — INBiz | |
| iShares Trust-iShares Core S&P 500 ETF | 2.2% | Indiana Secretary of State — INBiz | |
| Fidelity Concord Street Trust-Fidelity 500 Index Fund | 2.2% | Indiana Secretary of State — INBiz | |
| SPDR S&P 500 ETF TRUST | 2.1% | Indiana Secretary of State — INBiz | |
| -Price (T.Rowe) Real Assets Trust I | 1.4% | Indiana Secretary of State — INBiz |
Officers
5
The Co-founder, Chairman & Ceo of Steel Dynamics, Inc. on record is Mark D. Millett; 5 officers are shown here, filed with Indiana Secretary of State — INBiz.
The register reports 14 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at Steel Dynamics, Inc. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Group Structure
Steel Dynamics, Inc. has no recorded parent company — it sits at the top of its own group structure, with 27 subsidiaries recorded beneath it across 2 jurisdictions. Each of these downward relationships is derived rather than filed: resolved by matching entities across the registry network, not stated directly in a single document.
Those 27 subsidiaries span United States, Mexico jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. Six of the 27 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
Steel Dynamics, Inc.
United States
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Frequently Asked Questions
Who owns Steel Dynamics, Inc.?
Five shareholders are currently on record for Steel Dynamics, Inc., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is Vanguard Group Inc, holding 21.3% — the largest recorded stake — followed by iShares Trust-iShares Core S&P 500 ETF at 2.2%; the remaining 3 shareholders shown hold smaller stakes. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is Steel Dynamics, Inc.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for Steel Dynamics, Inc. is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does Steel Dynamics, Inc. have on record?
5 shareholders are shown on record for Steel Dynamics, Inc..
Is Steel Dynamics, Inc. still an active company?
Steel Dynamics, Inc.'s status on Indiana Secretary of State — INBiz is listed as active.
When was Steel Dynamics, Inc. incorporated?
Steel Dynamics, Inc. was incorporated on 1 January 1993, according to Indiana Secretary of State — INBiz.
What is Steel Dynamics, Inc.'s registered address?
The registered address on file for Steel Dynamics, Inc. is Fort Wayne, United States.
What legal structure is Steel Dynamics, Inc. registered as?
Steel Dynamics, Inc. is registered as a Public Limited Company in United States.
Who are the officers/directors of Steel Dynamics, Inc.?
The Co-founder, Chairman & Ceo of Steel Dynamics, Inc. on record is Mark D. Millett; 5 officers are shown here, filed with Indiana Secretary of State — INBiz. Management authority at Steel Dynamics, Inc. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does Steel Dynamics, Inc. have a parent company or subsidiaries?
Steel Dynamics, Inc. has no recorded parent company — it sits at the top of its own group structure, with 27 subsidiaries recorded beneath it across 2 jurisdictions. Those 27 subsidiaries span United States, Mexico jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. Six of the 27 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
Can Zavia monitor changes to Steel Dynamics, Inc.'s ownership over time?
This profile reflects a point-in-time snapshot from Indiana Secretary of State — INBiz. Zavia's monitoring API can track changes to Steel Dynamics, Inc.'s registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access Steel Dynamics, Inc.'s data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United States, so records like Steel Dynamics, Inc.'s registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Indiana Secretary of State — INBiz and was last synced on 15 September 2026.