WESTAT, INC. is a South Dakota corporation, registered on July 14, 2003. It is based at C/O Westat, Attn: Accounting & Contracts, 7501 Wisconsin Avenue, Bethesda, MD, 20814. The company is currently listed as active on the South Dakota register, is registered under company number FB027486 and carries EIN 840529566. Its E-Verify enrollment reports a workforce of 2,500 to 4,999 employees, hiring at 1 site in Maryland. Public records for the company include 1 SoS registration, 1 permit, 17 licenses, 4 federal contracts, 2 E-Verify records, 2 USDOT records 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 | WESTAT, INC. |
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| Principal address | C/O Westat, Attn: Accounting & Contracts, 7501 Wisconsin AvenueBethesda20814MDUnited States1600 RESEARCH BLVD, ROCKVILLE, MD, 20850-3129 |
| Registration state | South Dakota |
| Status | Active |
| Formed in | Delaware (foreign registration) |
| Home company | WESTAT, INC. |
| Registered | 14 July 2003 (about 23 years ago) |
| Shareholders | DEREK ELLIS, owner |
| Entity type | Corporation |
| Standing | compliant |
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| Company number | FB027486 |
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| EIN | 840529566 |
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| LEI | 254900Y1ECN4S1DGCL87 |
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| Employees (modeled) | ≈1,460 employees2025 |
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| Workforce size | 2,500 to 4,999 employees · updated 20 April 2023 |
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| Hiring sites | 1 site in Maryland |
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| USDOT carrier | USDOT 1628535 · 1 power unit · 3 drivers · Interstate |
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| Registered agent | C T CORPORATION SYSTEM |
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| Source registry | South Dakota Secretary of State · updated 15 June 2026 |
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| Public records | 1 SoS registration |
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| Est. revenue (modeled) | $381.7M2025 |
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| Federal contractor | Yes · 4 federal recipient records (SAM) |
| State | Business name | Filed | Registered agent | Officers | Status | |
|---|---|---|---|---|---|---|
| South DakotaTHIS | WESTAT, INC. | 2003-07-14 | C T CORPORATION SYSTEM | — | Active | |
Filing ID FB027486 Jurisdiction Foreign · CorporationFormed in Delaware Principal address C/O Westat, Attn: Accounting & Contracts, 7501 Wisconsin Avenue, Bethesda, MD, 20814 Registered agent C T CORPORATION SYSTEM319 S COTEAU ST, PIERRE, SD, 57501-3187 Officers Not reported | ||||||
| — | WESTAT, INC. | 2007-10-31 | — | Scott RoyalOfficerOswaldo HolguinOfficer | Active | |
| Alaska | Westat, Inc. | 2007-12-05 | C T Corporation System | Kieth RustDirectorTerry SavageVice president58 more | Active | |
| Alabama | Westat, Inc. | 2007-10-17 | C T CORPORATION SYSTEM | — | Active | |
| Arkansas | WESTAT, INC. | 2007-10-17 | C T CORPORATION SYSTEM | OSWALDO HOLGUINOfficerTHOMAS BARICHOfficer4 more | Active | |
| Arizona | WESTAT, INC. | 2007-10-25 | C T CORPORATION SYSTEM | Therese MooreOfficerScott RoyalOfficer, Director11 more | Active | |
| Colorado | WESTAT, INC. | 2002-04-09 | C T CORPORATION SYSTEM | — | Active | |
| Connecticut | WESTAT, INC. | 2003-04-15 | C T CORPORATION SYSTEM | Brad EdwardsOfficerSarah BallOfficer85 more | Active | |
| District of Columbia | WESTAT Inc. | 2003-04-21 | C T CORPORATION SYSTEM | Keith RustOwnerJeri MulrowOwner7 more | Active | |
| Delaware | WESTAT, INC. | 1979-04-25 | THE CORPORATION TRUST COMPANY | — | Unknown | |
| Florida | WESTAT, INC. | 2000-11-27 | C T CORPORATION SYSTEM | Graham KaltonOfficerKevin CookDirector14 more | Active | |
| Georgia | WESTAT, INC. | 2003-04-11 | C T CORPORATION SYSTEM | Scott RoyalOfficerVacant VacantOfficer1 more | Active | |
| Hawaii | WESTAT, INC. | 2007-10-16 | C T CORPORATION SYSTEM | MULROW,JERIOfficerOSBORN,SUZANNEOfficer13 more | Active | |
| Iowa | WESTAT, INC. | 2007-12-04 | C T CORPORATION SYSTEM | Linda SinghDirectorPatricia ShifflettDirector6 more | Active | |
| Idaho | WESTAT, INC. | 2003-04-11 | C T CORPORATION SYSTEM | Kevin CookDirectorCOOK KEVINDirector17 more | Active | |
| Illinois | WESTAT, INC. | 2007-09-20 | C T CORPORATION SYSTEM | — | Active | |
| Indiana | WESTAT, INC. | 2007-11-29 | C T CORPORATION SYSTEM | Dwight FeannyOfficerPatricia ShifflettOfficer11 more | Active | |
| Indiana | WESTAT INC | 1980-05-02 | C T Corporation System | HUNT.JOSEPH. AOfficer | Withdrawn | |
| Kansas | WESTAT, INC. | 2007-10-16 | C T CORPORATION SYSTEM | — | Active | |
| Kentucky | WESTAT, INC | 2007-10-17 | C T CORPORATION SYSTEM | Reesman DavidOfficer, DirectorHolguin OswaldoOfficer, Director5 more | Active | |
| Louisiana | WESTAT, INC. | 2007-10-16 | C T CORPORATION SYSTEM | Oswaldo HolguinOfficerLinda SinghDirector10 more | Active | |
| Massachusetts | WESTAT, INC. | 2003-04-14 | C T CORPORATION SYSTEM | Suzanne OsbornOfficerScott RoyalOfficer, Director11 more | Active | |
| Maryland | WESTAT, INC | 1980-05-02 | THE CORPORATION TRUST, INCORPORATED | — | Active | |
| Maine | WESTAT, INC. | 2004-03-15 | C T CORPORATION SYSTEM | — | Active | |
| Michigan | WESTAT, INC. | 2007-10-17 | THE CORPORATION COMPANY | — | Active | |
| Minnesota | Westat, Inc. | 2003-04-14 | C T Corporation System Inc | Scott RoyalOfficer | Active | |
| Missouri | WESTAT, INC. | 2007-10-17 | C T CORPORATION SYSTEM | Scott RoyalOfficer, DirectorRobin PortmanDirector6 more | Active | |
| Mississippi | Westat, Inc | 2007-10-16 | C T CORPORATION SYSTEM | Jeri MulrowOfficerDwight FeannyOfficer, Director8 more | Active | |
| Montana | WESTAT, INC. | 2007-10-16 | C T CORPORATION SYSTEM | Jeri MulrowOfficerDwight FeannyOfficer, Director11 more | Active | |
| North Carolina | Westat, Inc. | 2003-04-11 | CT Corporation System | Shifflett, PatriciaOfficerHolguin Puga, CesarOfficer9 more | Active | |
| North Dakota | WESTAT, INC. | 2007-10-19 | C T CORPORATION SYSTEM | — | Active | |
| Nebraska | WESTAT, INC. | 2007-12-04 | C T CORPORATION SYSTEM | SUZANNE OSBORNOfficerJAMES E SMITHDirector, Officer21 more | Active | |
| New Hampshire | Westat, Inc. | 2007-10-30 | C T Corporation System | Scott RoyalOfficer, DirectorJeri MulrowOfficer11 more | Active | |
| New Mexico | WESTAT, INC. | 2003-04-16 | C T CORPORATION SYSTEM | Kareen RiceOfficerThomas KrenzkeOfficer67 more | Active | |
| Nevada | WESTAT, INC. | 2007-10-17 | C T CORPORATION SYSTEM** | Keith RustDirectorScott RoyalDirector, Officer7 more | Active | |
| Ohio | WESTAT, INC. | 2001-08-29 | CT CORPORATION SYSTEM | — | Active | |
| Ohio | WESTAT, INC. | 1999-07-29 | CT CORPORATION SYSTEM | — | Dissolved | |
| Oklahoma | WESTAT, INC. | 2007-10-16 | C T CORPORATION SYSTEM | — | Active | |
| Oregon | WESTAT, INC. | 2007-10-16 | C T CORPORATION SYSTEM | DAVID REESMANOfficerSCOTT ROYALOfficer | Active | |
| Pennsylvania | WESTAT, INC. | 1994-03-07 | — | David ReesmanOfficer, DirectorRobin PortmanDirector5 more | Active | |
| Rhode Island | Westat, Inc. | 2007-10-16 | CT CORPORATION SYSTEM | CESAR HOLGUIN PUGAOfficerJACQUELINE HOGANDirector64 more | Active | |
| South Carolina | WESTAT, INC. | 2007-12-05 | C T CORPORATION SYSTEM | — | Active | |
| Tennessee | WESTAT, INC. | 2008-03-03 | C T CORPORATION SYSTEM | — | Active | |
| Texas | Westat, Inc. | 2003-04-14 | C T Corporation System | COOK TAMMYOfficerCOOK KEVINDirector, Member64 more | Active | |
| Utah | WESTAT, INC. | 2007-12-03 | CT CORPORATION SYSTEM | KEVIN COOKDirectorRobin PortmanDirector17 more | Active | |
| Utah | WESTAT, INC. | 2001-08-24 | CT CORPORATION SYSTEM | JOSEPH A HUNTDirector, Officer | Inactive | |
| Virginia | WESTAT, INC. | 2002-01-10 | C T CORPORATION SYSTEM | Suzanne OsbornOfficerOswaldo HolguinOfficer11 more | Active | |
| Vermont | WESTAT, INC. | 2004-03-15 | C T CORPORATION SYSTEM | Jeri MulrowOfficerKeith RustDirector12 more | Active | |
| Washington | WESTAT, INC. | 2004-03-19 | C T CORPORATION SYSTEM | DEREK ELLISDirectorSCOTT ROYALDirector8 more | Active | |
| West Virginia | WESTAT, INC. | 2007-10-16 | C T CORPORATION SYSTEM | OSWALDO HOLGUINOfficer, DirectorSUZANNE OSBORNOfficer2 more | Active | |
| Wyoming | Westat, Inc. | 2007-10-24 | C T Corporation System | Joseph A. HuntOfficerThomas W. McKennaOfficer | Active | |
Companies and people linked to WESTAT, INC. 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
Browse the indexed registries by state, or look up any debtor name free, at UCC lien search.
| State | Permit | Issued | Type | Location | Status | |
|---|---|---|---|---|---|---|
| Texas | 18405295660 | — | — | KIRBY DR STE 710 | Unknown | |
| State | License / ID | Type | Issued | Status | |
|---|---|---|---|---|---|
| Alaska | 985598 | — | 2013-02-20 | Active | |
| Delaware | 2003111486 | — | — | Unknown | |
| Delaware | 2003111486 | — | — | Unknown | |
| Delaware | 2003111486 | — | — | Unknown | |
| Delaware | 2003111486 | — | — | Unknown | |
| Delaware | 2003111486 | — | — | Unknown | |
| Delaware | 2003111486 | — | — | Unknown | |
| Delaware | 2003111486 | — | — | Unknown | |
| Delaware | 2003111486 | — | — | Unknown | |
| Delaware | 2003111486 | — | — | Unknown | |
| State | Workforce | Hiring sites | Enrolled | Industry | Status | |
|---|---|---|---|---|---|---|
| Maryland | 2,500 to 4,999 | 1 | 12/5/2017 | PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES (54) | Terminated | |
| Maryland | 2,500 to 4,999 | 1 | 6/7/2022 | PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES (54) | Open | |
Employee-benefit plan filings by WESTAT, 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) | ≈1,460 · plan year 2025 |
|---|---|
| Est. annual revenue (modeled) | $381.7M |
| Benefit plans | 401(k) plan on file |
| Filing history | 27 plan years filed, 1999–2025 |
| Sponsor EIN | 84-0529566 |
| Plan year | Employees (est.) | Participants | Plan assets | Revenue (est.) | 401(k) | |
|---|---|---|---|---|---|---|
| 2025 | ≈1,460 | 1,851 (1,315 active) | — | $381.7M | Welfare | |
| 2024 | ≈7,490 | 9,897 (6,738 active) | $1.2B | $1.4B | 401(k) | |
| 2023 | ≈9,830 | 9,024 (8,847 active) | $1.1B | $1.5B | 401(k) | |
| 2022 | ≈8,970 | 9,123 (8,077 active) | $977.8M | $1.4B | 401(k) | |
| 2021 | ≈9,000 | 4,709 (8,099 active) | $1.1B | $1.3B | 401(k) | |
| 2020 | ≈4,150 | 5,038 (3,731 active) | $1B | $858.2M | 401(k) | |
| 2019 | ≈4,500 | 5,526 (4,050 active) | $962M | $822.7M | 401(k) | |
| 2018 | ≈5,340 | 5,897 (4,808 active) | $859.9M | $890.6M | 401(k) | |
| 2017 | ≈5,320 | 5,094 (4,785 active) | $929.3M | $984.5M | 401(k) | |
| 2016 | ≈4,810 | 5,386 (4,329 active) | $831.7M | $883.8M | 401(k) | |
Matched Form 5500 filing records:
| Plan | Plan year | Participants | EIN | |
|---|---|---|---|---|
| WESTAT, INC. SAVINGS PLAN | — | — | — | |
| WESTAT, INC. SAVINGS PLAN | — | — | — | |
| WESTAT, INC. SAVINGS PLAN | — | — | — | |
| WESTAT, INC. SAVINGS PLAN | — | — | — | |
| WESTAT, INC. SAVINGS PLAN | — | — | — | |
| WESTAT, INC. SAVINGS PLAN | — | — | — | |
| WESTAT, INC. SAVINGS PLAN | — | — | — | |
| WESTAT, INC. SAVINGS PLAN | — | — | — | |
| WESTAT, INC. SAVINGS PLAN | — | — | — | |
| WESTAT, INC. SAVINGS PLAN | — | — | — | |
Federal court records load when you reach this section.
Companies adjacent to WESTAT, INC. in the South Dakota Secretary of State register, in alphabetical order.
4 companies are registered at C/O Westat, Attn: Accounting & Contracts, 7501 Wisconsin Avenue, Bethesda — 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 2026-07-29. Document getpalm-companies/5647-1060-4380.