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11 construction employers in South Dakota have substantive broker records on their Form 5500 filings. Median disclosed broker cost in this group runs about $18 per participant per month. Open any company to see its broker of record, disclosed compensation, and benefit lines — or step back to all South Dakota employers.
| Company | Industry | Plan type | Participants | Latest filing | Broker comp |
|---|---|---|---|---|---|
| RAPID FIRE PROTECTION, INC | Construction | Fully insured | 369 | 2025 | Disclosed |
| MAGUIRE TANK, INC. MAGUIRE IRON, INC. | Construction | Self-funded | 281 | 2025 | Disclosed |
| MUTH ELECTRIC INC | Construction | Fully insured | 268 | 2025 | Disclosed |
| THERMO BOND BUILDINGS, LLC | Construction | Self-funded | 233 | 2024 | Disclosed |
| SCULL CONSTRUCTION SERVICE, INC. | Construction | Fully insured | 230 | 2024 | Disclosed |
| JOURNEY GROUP COMPANIES | Construction | Fully insured | 190 | 2025 | Disclosed |
| MIDWESTERN MECHANICAL, INC. | Construction | Self-funded | 158 | 2025 | Disclosed |
| HENRY CARLSON COMPANY | Construction | Fully insured | 149 | 2025 | Disclosed |
| HOWE, INC | Construction | Self-funded | 108 | 2025 | Disclosed |
| KROHMER PLUMBING, INC | Construction | Fully insured | 102 | 2024 | Disclosed |
| FRISBEES, INC. | Construction | Self-funded | 97 | 2023 | Disclosed |
Sourced from Form 5500 filings as submitted to the U.S. Department of Labor. Dataset refreshed October 7, 2026. Plan years are labeled by the year they begin, so a July 2024 – June 2025 plan year is 2024. Filings may lag 12–18 months behind the current plan year.