Red Rhombus, LLC is a South Dakota LLC, registered on July 14, 2023. It is based at 506 6th Street, Rapid City, SD, 57701. The company is currently listed as active on the South Dakota register, is registered under company number DL254652 and carries EIN 043620765. Public records for the company include 1 SoS registration, 1 federal contract, 1 loan record 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 | Red Rhombus, LLC |
|---|---|
| Principal address | 506 6th StreetRapid City57701SDUnited States |
| Registration state | South Dakota |
| Status | Active |
| Registered | 14 July 2023 (about 3 years ago) |
| Entity type | LLC |
| Standing | compliant |
| Company number | DL254652 |
| EIN | 043620765 |
| Employees (modeled) | β10 employees2025 |
| Registered agent | GUNDERSON PALMER REGISTERED AGENTS, LLC |
| Source registry | South Dakota Secretary of State Β· updated 15 June 2026 |
| Public records |
|---|
| 1 SoS registration |
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| Est. revenue (modeled) | $4.7M2025 |
|---|---|
| Federal contractor | Yes Β· 1 federal recipient record (SAM) |
| SBA loans | $129K Β· approved amounts |
| State | Business name | Filed | Registered agent | Officers | Status | |
|---|---|---|---|---|---|---|
| South DakotaTHIS | Red Rhombus, LLC | 2023-07-14 | GUNDERSON PALMER REGISTERED AGENTS, LLC | β | Active | |
Filing ID DL254652 Jurisdiction Domestic Β· LLC Principal address 506 6th Street, Rapid City, SD, 57701 Registered agent GUNDERSON PALMER REGISTERED AGENTS, LLC506 6TH ST, RAPID CITY, SD, 57701-2726 Officers Not reported | ||||||
Companies and people linked to Red Rhombus, 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 β a shared agent, address or contact alone does not prove affiliation.
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| Amount | Approved | Lender | Jobs | Status | |
|---|---|---|---|---|---|
| $128,600 | 04/15/2020 | Sandy Spring Bank | 19 | Paid in Full | |
Employee-benefit plan filings by Red Rhombus, LLC with the Department of Labor. Employee and revenue figures are modeled estimates derived from retirement-plan participant counts and industry ratios β not official headcount or reported revenue.
| Employees (modeled) | β10 Β· plan year 2025 |
|---|---|
| Est. annual revenue (modeled) | $4.7M |
| Retirement plan assets | $1.2M |
| Benefit plans | 401(k) plan on file |
| Filing history | 15 plan years filed, 2011β2025 |
| Sponsor EIN | 04-3620765 |
| Plan year | Employees (est.) | Participants | Plan assets | Revenue (est.) | 401(k) | |
|---|---|---|---|---|---|---|
| 2025 | β10 | 12 (9 active) | $1.2M | $4.7M | 401(k) | |
| 2024 | β11 | 12 (10 active) | $1.1M | $4.9M | 401(k) | |
| 2023 | β16 | 14 (14 active) | $942,667 | $6.1M | 401(k) | |
| 2022 | β17 | 16 (15 active) | $774,350 | $6.2M | 401(k) | |
| 2021 | β10 | 10 (9 active) | $757,948 | $4.5M | 401(k) | |
| 2020 | β13 | 14 (12 active) | $665,184 | $4.2M | 401(k) | |
| 2019 | β12 | 12 (11 active) | $583,698 | $4M | 401(k) | |
| 2018 | β9 | 9 (8 active) | $466,517 | $3.4M | 401(k) | |
| 2017 | β7 | 7 (6 active) | $428,726 | $2.9M | 401(k) | |
| 2016 | β9 | 8 (8 active) | $322,872 | $3.2M | 401(k) | |
Matched Form 5500 filing records:
| Plan | Plan year | Participants | EIN | |
|---|---|---|---|---|
| RED RHOMBUS LLC 401(K) P/S PLAN | β | β | β | |
| RED RHOMBUS LLC 401(K) P/S PLAN | β | β | β | |
| RED RHOMBUS LLC 401(K) P/S PLAN | β | β | β | |
| RED RHOMBUS LLC 401(K) P/S PLAN | β | β | β | |
| RED RHOMBUS LLC 401(K) P/S PLAN | β | β | β | |
| RED RHOMBUS LLC 401(K) P/S PLAN | β | β | β | |
| RED RHOMBUS LLC 401(K) P/S PLAN | β | β | β | |
| RED RHOMBUS LLC 401(K) P/S PLAN | β | β | β | |
| RED RHOMBUS LLC 401(K) P/S PLAN | β | β | β | |
| RED RHOMBUS LLC 401(K) P/S PLAN | β | β | β | |
Federal court records load when you reach this section.
39 companies are registered at 506 6th Street, Rapid City β 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 2026-06-16. Document getpalm-companies/2220-0791-6534.