Diamond Group, LLC is a South Dakota LLC, registered on September 28, 2021. It is based at 3525 E Colorado Blvd., Ste 3, Spearfish, SD, 57783. The company has since been marked inactive on the South Dakota register, is registered under company number DL211148 and carries EIN 752972647. Public records for the company include 1 SoS registration, 1 UCC lien, 2 federal contracts, 2 loan records, 2 USDOT records and 19 Form 5500 filings. Every fact here is republished from an official public register and traces back to a primary source document.
| Legal entity name | Diamond Group, LLC |
|---|---|
| Principal address | 3525 E Colorado Blvd., Ste 3Spearfish57783SDUnited States3708 BIRCHMOOR GARDENS CT, FLORISSANT, MO, 63034 |
| Registration state | South Dakota |
| Status | Inactive |
| Registered | 28 September 2021 (almost 5 years ago) |
| Shareholders | JORDON MICHAEL HENDERSON, owner |
| Entity type | LLC |
| Standing | not compliant |
| Company number | DL211148 |
| EIN | 752972647 |
| Employees (modeled) | ≈197 employees2024 |
| USDOT carrier | USDOT 3044914 · 1 power unit · 4 drivers · Intrastate |
|---|
| Registered agent | Amber Horstmann |
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| Source registry | South Dakota Secretary of State · updated 15 June 2026 |
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| Public records | 1 SoS registration · 1 UCC lien on file |
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| Est. revenue (modeled) | $18.8M2024 |
|---|---|
| Federal contractor | Yes · 2 federal recipient records (SAM) |
| SBA loans | $300K · approved amounts |
| State | Business name | Filed | Registered agent | Officers | Status | |
|---|---|---|---|---|---|---|
| South DakotaTHIS | Diamond Group, LLC | 2021-09-28 | Amber Horstmann | — | Inactive | |
Filing ID DL211148 Jurisdiction Domestic · LLC Principal address 3525 E Colorado Blvd., Ste 3, Spearfish, SD, 57783 Registered agent Amber Horstmann3525 E COLORADO BLVD STE 3, SPEARFISH, SD, 57783 Officers Not reported | ||||||
Companies and people linked to Diamond Group, LLC 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.
company person group former role
| State | License / ID | Type | Issued | Status | |
|---|---|---|---|---|---|
| Missouri | 3044914 | Intrastate carrier | — | Active | |
| Missouri | 3044914 | Carrier authority (USDOT) | — | Active | |
| Amount | Approved | Lender | Jobs | Status | |
|---|---|---|---|---|---|
| $150,000 | 2002-07-09 | Manufacturers and Traders Trust Company | — | P I F | |
| $150,000 | 2001-12-03 | Manufacturers and Traders Trust Company | — | P I F | |
Employee-benefit plan filings by Diamond Group, LLC 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) | ≈197 · plan year 2024 |
|---|---|
| Est. annual revenue (modeled) | $18.8M |
| Retirement plan assets | $1.6M |
| Benefit plans | 401(k) plan on file |
| Filing history | 23 plan years filed, 2002–2024 |
| Sponsor EIN | 75-2972647 |
| Plan year | Employees (est.) | Participants | Plan assets | Revenue (est.) | 401(k) | |
|---|---|---|---|---|---|---|
| 2024 | ≈197 | 177 | $1.6M | $18.8M | 401(k) | |
| 2023 | ≈86 | 188 (77 active) | $7.7M | $16.2M | 401(k) | |
| 2022 | ≈126 | 230 (113 active) | $6.5M | $23.7M | 401(k) | |
| 2021 | ≈144 | 251 (130 active) | $8.1M | $26.4M | 401(k) | |
| 2020 | ≈176 | 259 (158 active) | $8M | $29.7M | 401(k) | |
| 2019 | ≈204 | 264 (184 active) | $6.5M | $32.1M | 401(k) | |
| 2018 | ≈229 | 314 (206 active) | $5.1M | $42.7M | 401(k) | |
| 2017 | ≈218 | 180 (196 active) | $4.5M | $32.1M | 401(k) | |
| 2016 | ≈183 | 237 (165 active) | $3.1M | $23.1M | 401(k) | |
| 2015 | ≈190 | 228 (171 active) | $2.3M | $21M | 401(k) | |
Matched Form 5500 filing records:
| Plan | Plan year | Participants | EIN | |
|---|---|---|---|---|
| OUR RETIREMENT PLAN | — | — | — | |
| OUR RETIREMENT PLAN | — | — | — | |
| OUR RETIREMENT PLAN | — | — | — | |
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| OUR RETIREMENT PLAN | — | — | — | |
| OUR RETIREMENT PLAN | — | — | — | |
| OUR RETIREMENT PLAN | — | — | — | |
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Federal court records load when you reach this section.
Companies adjacent to Diamond Group, LLC in the South Dakota Secretary of State register, in alphabetical order.
2 companies are registered at 3525 E Colorado Blvd., Ste 3, Spearfish — 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 2026-06-10. Document getpalm-companies/1028-3065-6720.