H. A. THOMPSON & SONS, INC. is a North Dakota corporation, registered on September 18, 1946. It is based at 911 S 9TH ST BOB EHLI, BISMARCK, ND, 58504, United States. The company is currently listed as active on the North Dakota register, is registered under company number 0000001861 and carries EIN 450217948. Public records for the company include 1 SoS registration, 1 federal contract, 1 loan record and 16 Form 5500 filings. Every fact here is republished from an official public register and traces back to a primary source document.
| Legal entity name | H. A. THOMPSON & SONS, INC. |
|---|---|
| Principal address | 911 S 9TH ST BOB EHLIBISMARCK58504NDUnited States |
| Mailing address | PO BOX 1195 BOB EHLI, BISMARCK, ND, 58502-1195, US |
| Registration state | North Dakota |
| Status | Active |
| Registered | 18 September 1946 (almost 80 years ago) |
| Entity type | Corporation |
| Standing | compliant |
| Company number | 0000001861 |
| EIN | 450217948 |
| Employees (modeled) | ≈97 employees2024 |
| Registered agent | MARK W THOMPSON |
| Source registry |
| North Dakota Secretary of State · updated 15 June 2026 |
| Public records | 1 SoS registration |
|---|
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| Est. revenue (modeled) | $28.2M2024 |
|---|---|
| Federal contractor | Yes · 1 federal recipient record (SAM) |
| SBA loans | $1.5M · approved amounts |
| State | Business name | Filed | Registered agent | Officers | Status | |
|---|---|---|---|---|---|---|
| North DakotaTHIS | H. A. THOMPSON & SONS, INC. | 1946-09-18 | MARK W THOMPSON | — | Active | |
Filing ID 0000001861 Jurisdiction Domestic · Corporation Principal address 911 S 9TH ST BOB EHLI, BISMARCK, ND, 58504, United States Registered agent MARK W THOMPSON911 S 9TH ST PO BOX 1195, BISMARCK, ND, 58502-1195 Officers Not reported | ||||||
| Minnesota | H.A. Thompson & Sons, Inc. | 1994-06-20 | C T Corporation System Inc | Mark ThompsonOfficer | Active | |
| Montana | H. A. THOMPSON & SONS, INC. | 1995-05-30 | C T CORPORATION SYSTEM | MARK W THOMPSONOfficerJENNIFER THOMPSONDirector2 more | Active | |
| South Dakota | H. A. THOMPSON & SONS, INC. | 1994-06-20 | C T CORPORATION SYSTEM | — | Active | |
Browse the indexed registries by state, or look up any debtor name free, at UCC lien search.
| Amount | Approved | Lender | Jobs | Status | |
|---|---|---|---|---|---|
| $1,466,800 | 04/04/2020 | First Western Bank & Trust | 91 | Paid in Full | |
Employee-benefit plan filings by H. A. THOMPSON & SONS, INC. 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) | ≈97 · plan year 2024 |
|---|---|
| Est. annual revenue (modeled) | $28.2M |
| Retirement plan assets | $8.1M |
| Benefit plans | 401(k) plan on file |
| Filing history | 25 plan years filed, 2000–2024 |
| Sponsor EIN | 45-0217948 |
| Plan year | Employees (est.) | Participants | Plan assets | Revenue (est.) | 401(k) | |
|---|---|---|---|---|---|---|
| 2024 | ≈97 | 112 (87 active) | $8.1M | $28.2M | 401(k) | |
| 2023 | ≈96 | 103 (86 active) | $7M | $27.2M | 401(k) | |
| 2022 | ≈94 | 102 (85 active) | $5.9M | $25.9M | 401(k) | |
| 2021 | ≈93 | 97 (84 active) | $6.6M | $23.5M | 401(k) | |
| 2020 | ≈99 | 96 (89 active) | $5.5M | $23.1M | 401(k) | |
| 2019 | ≈92 | 111 (83 active) | $4.2M | $22M | 401(k) | |
| 2018 | ≈90 | 105 (81 active) | $3M | $20.6M | 401(k) | |
| 2017 | ≈94 | 109 (85 active) | $3.6M | $20.2M | 401(k) | |
| 2016 | ≈84 | 94 (76 active) | $2.9M | $18.7M | 401(k) | |
| 2015 | ≈82 | 90 (74 active) | $2.5M | $17.7M | 401(k) | |
Matched Form 5500 filing records:
| Plan | Plan year | Participants | EIN | |
|---|---|---|---|---|
| H.A. THOMPSON & SONS, INC. 401(K) P/S PLAN | — | — | — | |
| H.A. THOMPSON & SONS, INC. 401(K) P/S PLAN | — | — | — | |
| H.A. THOMPSON & SONS, INC. 401(K) P/S PLAN | — | — | — | |
| H.A. THOMPSON & SONS, INC. 401(K) P/S PLAN | — | — | — | |
| H.A. THOMPSON & SONS, INC. 401(K) P/S PLAN | — | — | — | |
| H.A. THOMPSON & SONS, INC. 401(K) P/S PLAN | — | — | — | |
| H.A. THOMPSON & SONS, INC. 401(K) P/S PLAN | — | — | — | |
| H.A. THOMPSON & SONS, INC. 401(K) P/S PLAN | — | — | — | |
| H.A. THOMPSON & SONS, INC. 401(K) P/S PLAN | — | — | — | |
| H.A. THOMPSON & SONS, INC. 401(K) P/S PLAN | — | — | — | |
Federal court records load when you reach this section.
Companies adjacent to H. A. THOMPSON & SONS, INC. in the North Dakota Secretary of State register, in alphabetical order.
Netstate aggregates public records from federal, state and municipal sources; records are matched to this company by its registered legal names. Latest source snapshot 2026-08-08. Document getpalm-companies/7253-1339-6868.