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30 manufacturing — heavy employers in South Dakota have substantive broker records on their Form 5500 filings. Median disclosed broker cost in this group runs about $9 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 |
|---|---|---|---|---|---|
| DAKTRONICS, INC. | Manufacturing — Heavy | Self-funded | 2.1K | 2025 | Disclosed |
| LARSON MANUFACTURING COMPANY OF SOUTH DAKOTA, INC. | Manufacturing — Heavy | Self-funded | 770 | 2022 | Disclosed |
| SHOWPLACE WOOD PRODUCTS, INC | Manufacturing — Heavy | Self-funded | 641 | 2025 | Disclosed |
| SONIFI SOLUTIONS, INC. | Manufacturing — Heavy | Self-funded | 617 | 2024 | Disclosed |
| DAKOTA BODIES, LLC | Manufacturing — Heavy | Self-funded | 413 | 2022 | Disclosed |
| PERSONA SIGNS, LLC | Manufacturing — Heavy | Self-funded | 377 | 2025 | Disclosed |
| HARVARD INTEGRATIONS, LP | Manufacturing — Heavy | Self-funded | 367 | 2025 | Disclosed |
| ROSENBAUER MINNESOTA, LLC | Manufacturing — Heavy | Fully insured | 345 | 2025 | Disclosed |
| HOLIEN INC | Manufacturing — Heavy | Fully insured | 313 | 2021 | Disclosed |
| SHUR-CO, LLC | Manufacturing — Heavy | Self-funded | 310 | 2025 | Disclosed |
| ROSENBAUER SOUTH DAKOTA, LLC | Manufacturing — Heavy | Fully insured | 309 | 2025 | Disclosed |
| FIMCO, INC. | Manufacturing — Heavy | Self-funded | 257 | 2025 | Disclosed |
| MARMEN ENERGY COMPANY | Manufacturing — Heavy | Self-funded | 243 | 2024 | Disclosed |
| COMFORT BILT, LLC | Manufacturing — Heavy | Self-funded | 206 | 2022 | Disclosed |
| AEROSTAR INTERNATIONAL, LLC | Manufacturing — Heavy | Self-funded | 196 | 2025 | Disclosed |
| GLACIAL LAKES ENERGY, LLC | Manufacturing — Heavy | Self-funded | 193 | 2025 | Disclosed |
| SIOUX STEEL COMPANY | Manufacturing — Heavy | Self-funded | 174 | 2022 | Disclosed |
| PRINCE MANUFACTURING CORPORATION | Manufacturing — Heavy | Self-funded | 165 | 2025 | Disclosed |
| DAKOTA TUBE, INC. | Manufacturing — Heavy | Fully insured | 164 | 2025 | Disclosed |
| CREATIVE SURFACES, INC. | Manufacturing — Heavy | Fully insured | 157 | 2025 | Disclosed |
| ROSENBAUER MOTORS | Manufacturing — Heavy | Fully insured | 157 | 2025 | Disclosed |
| ADAMS THERMAL SYSTEMS, INC. | Manufacturing — Heavy | Fully insured | 144 | 2025 | Disclosed |
| DIAMOND MOWERS, LLC | Manufacturing — Heavy | Fully insured | 135 | 2025 | Disclosed |
| ELECTRONIC SYSTEMS, INC. | Manufacturing — Heavy | Fully insured | 128 | 2025 | Disclosed |
| MASABA, INC. | Manufacturing — Heavy | Fully insured | 109 | 2024 | Disclosed |
| WESTLAND MANUFACTURING | Manufacturing — Heavy | Self-funded | 106 | 2025 | Disclosed |
| T & R ELECTRIC SUPPLY CO., INC. | Manufacturing — Heavy | Fully insured | 105 | 2024 | Disclosed |
| PERDUE INC | Manufacturing — Heavy | Fully insured | 85 | 2016 | Disclosed |
| TRAIL-EZE, INC. | Manufacturing — Heavy | Fully insured | 81 | 2024 | Disclosed |
| TRAIL-EZE, INC | Manufacturing — Heavy | Fully insured | 72 | 2025 | 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.