BTU ENGINEERING, INC. is a South Dakota corporation, registered on December 19, 1994. It is based at 2021 25TH AVE., BROOKINGS, SD, 57006-7024. The company is currently listed as active on the South Dakota register, is registered under company number DB035122 and carries EIN 460435059. Public records for the company include 1 SoS registration and 15 Form 5500 filings. Every fact here is republished from an official public register and traces back to a primary source document.
| Legal entity name | BTU ENGINEERING, INC. |
|---|---|
| Principal address | 2021 25TH AVE.BROOKINGS57006-7024SDUnited States |
| Registration state | South Dakota |
| Status | Active |
| Registered | 19 December 1994 (over 31 years ago) |
| Entity type | Corporation |
| Standing | compliant |
| Company number | DB035122 |
| EIN | 460435059 |
| Employees (modeled) | ≈2 employees2025 |
| Registered agent | MICHAEL P TWEDT |
| Source registry | South Dakota Secretary of State · updated 15 June 2026 |
| Public records |
|---|
| 1 SoS registration |
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| Est. revenue (modeled) | $332K2025 |
|---|
| State | Business name | Filed | Registered agent | Officers | Status | |
|---|---|---|---|---|---|---|
| South DakotaTHIS | BTU ENGINEERING, INC. | 1994-12-19 | MICHAEL P TWEDT | — | Active | |
Filing ID DB035122 Jurisdiction Domestic · Corporation Principal address 2021 25TH AVE., BROOKINGS, SD, 57006-7024 Registered agent MICHAEL P TWEDT2021 25TH AVE, BROOKINGS, SD, 57006 Officers Not reported | ||||||
Companies and people linked to BTU ENGINEERING, INC. in the state registers through shared officers, a shared registered agent, shared filing contacts or a shared address. Service companies file for many unrelated businesses — a shared agent, address or contact alone does not prove affiliation.
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Browse the indexed registries by state, or look up any debtor name free, at UCC lien search.
Employee-benefit plan filings by BTU ENGINEERING, INC. with the Department of Labor. Employee and revenue figures are modeled estimates derived from retirement-plan participant counts and industry ratios — not official headcount or reported revenue.
| Employees (modeled) | ≈2 · plan year 2025 |
|---|---|
| Est. annual revenue (modeled) | $331,943 |
| Retirement plan assets | $710,135 |
| Benefit plans | 401(k) plan on file |
| Filing history | 15 plan years filed, 2011–2025 |
| Sponsor EIN | 46-0435059 |
| Plan year | Employees (est.) | Participants | Plan assets | Revenue (est.) | 401(k) | |
|---|---|---|---|---|---|---|
| 2025 | ≈2 | 2 (2 active) | $710,135 | $331,943 | 401(k) | |
| 2024 | ≈2 | 2 (2 active) | $566,950 | $570,582 | 401(k) | |
| 2023 | ≈2 | 2 (2 active) | $428,245 | $664,134 | 401(k) | |
| 2022 | ≈2 | 2 (2 active) | $282,793 | $520,562 | 401(k) | |
| 2021 | ≈2 | 2 (2 active) | $360,373 | $310,235 | 401(k) | |
| 2020 | ≈2 | 2 (2 active) | $304,490 | $379,730 | 401(k) | |
| 2019 | ≈2 | 2 (2 active) | $229,812 | $233,763 | 401(k) | |
| 2018 | ≈2 | 2 (2 active) | $170,857 | $247,338 | 401(k) | |
| 2017 | ≈2 | 2 (2 active) | $176,336 | $326,469 | 401(k) | |
| 2016 | ≈2 | 2 (2 active) | $126,452 | $277,292 | 401(k) | |
Matched Form 5500 filing records:
| Plan | Plan year | Participants | EIN | |
|---|---|---|---|---|
| BTU ENGINEERING, INC. 401(K) & PROFIT SHARING PLAN | — | — | — | |
| BTU ENGINEERING, INC. 401(K) & PROFIT SHARING PLAN | — | — | — | |
| BTU ENGINEERING, INC. 401(K) & PROFIT SHARING PLAN | — | — | — | |
| BTU ENGINEERING, INC. 401(K) & PROFIT SHARING PLAN | — | — | — | |
| BTU ENGINEERING, INC. 401(K) & PROFIT SHARING PLAN | — | — | — | |
| BTU ENGINEERING, INC. 401(K) & PROFIT SHARING PLAN | — | — | — | |
| BTU ENGINEERING, INC. 401(K) & PROFIT SHARING PLAN | — | — | — | |
| BTU ENGINEERING, INC. 401(K) & PROFIT SHARING PLAN | — | — | — | |
| BTU ENGINEERING, INC. 401(K) & PROFIT SHARING PLAN | — | — | — | |
| BTU ENGINEERING, INC. 401(K) & PROFIT SHARING PLAN | — | — | — | |
Federal court records load when you reach this section.
Companies adjacent to BTU ENGINEERING, INC. in the South Dakota Secretary of State register, in alphabetical order.
1 company is registered at 2021 25TH AVE., BROOKINGS — shared registered-office and agent addresses are common; a shared address alone does not link businesses.
Netstate aggregates public records from federal, state and municipal sources; records are matched to this company by its registered legal names. Latest source snapshot 2026-06-17. Document getpalm-companies/2819-8497-4870.