Mainstay Filing LLC is a South Dakota LLC, registered on April 30, 2026. It is based at 3916 N Potsdam Ave, Sioux Falls, SD, 57104. The company is currently listed as active on the South Dakota register and is registered under company number DL327478. Public records for the company include 1 SoS registration. Every fact here is republished from an official public register and traces back to a primary source document.
| Legal entity name | Mainstay Filing LLC |
|---|---|
| Principal address | 3916 N Potsdam AveSioux Falls57104SDUnited States |
| Registration state | South Dakota |
| Status | Active |
| Registered | 30 April 2026 (4 months ago) |
| Entity type | LLC |
| Standing | compliant |
| Company number | DL327478 |
| Registered agent | REGISTERED AGENTS INC |
| Source registry | South Dakota Secretary of State · updated 15 June 2026 |
| Public records | 1 SoS registration |
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| State | Business name | Filed | Registered agent | Officers | Status | |
|---|---|---|---|---|---|---|
| South DakotaTHIS | Mainstay Filing LLC | 2026-04-30 | REGISTERED AGENTS INC | — | Active | |
Filing ID DL327478 Jurisdiction Domestic · LLC Principal address 3916 N Potsdam Ave, Sioux Falls, SD, 57104 Registered agent REGISTERED AGENTS INC25 1ST AVE SW, STE A, WATERTOWN, SD, 57201-3507 Officers Not reported | ||||||
Companies and people linked to Mainstay Filing 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.
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Companies adjacent to Mainstay Filing LLC in the South Dakota Secretary of State register, in alphabetical order.
41 companies are registered at 3916 N Potsdam Ave, Sioux Falls — 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/2672-0801-1251.