Form 5500 Search

Washington Employer EIN Lookup

Use this WashingtonEIN lookup to find an employer’s Employer Identification Number from its public Form 5500 filing. 21,814 employers based in Washington have filed a Form 5500, covering 24,675 retirement and health plans with $575.3B in reported assets. The largest are listed below with their EIN — open any employer to see the full filing.

Employers
21,814
Plans
24,675
Total assets
$575.3B

Largest employers in Washington by EIN

Form 5500 search →
EmployerEINCityPlansParticipantsAssets
The Boeing Co. and Consolidated Subsidiaries91-0425694Seattle20808,110$119.5B
Microsoft Corporation91-1144442Redmond4324,012$77.9B
Western Conference of Teamsters Pension Trust Fund Board of Trustees91-6145047Seattle1231,353$56.4B
Costco Wholesale Corporation91-1223280Issaquah71,053,473$41.7B
Amazon.COM Services, LLC82-0544687Seattle32,402,650$34.6B
Amazon.COM Services,LLC91-1986545North Seattle11,209,303$26.2B
Providence Health & Services51-0216586Renton4207,347$16.7B
T-Mobile USA, Inc.91-1983600Bellevue2138,787$9.1B
Alaska Airlines, Inc.92-0009235Seattle1045,473$7.4B
Paccar Inc.91-0351110Bellevue630,123$6.2B
Starbucks Corporation91-1325671Seattle2451,616$4.9B
St.Joseph Health System95-3589356Renton352,758$4.6B
Nordstrom, Inc.91-0515058Seattle4119,953$4.3B
Weyerhaeuser Company91-0470860Seattle319,910$3.9B
Schweitzer Engineering Laboratories, Inc.91-1196408Pullman313,859$3.7B
Board of Trustees, Locals 302 & 612 of the IUOE -91-6028571Seattle17,978$3.3B
Hanford Pension and Savings Plans Committee90-0501441Richland38,554$3.2B
Multicare Health System91-1352172Tacoma761,347$3.1B
Board of Trustees, Sound Retirement Trust91-6069306Bothell165,701$2.7B
Puget Sound Energy, Inc.91-0374630Bellevue58,687$2.5B
Milliman91-0675641Seattle310,508$2.1B
Expedia, Inc.91-1996083Seattle215,291$2.1B
Perkins COIE LLP91-0591206Seattle44,961$1.9B
Board of Trustees GCIU-Employer Retirement Benefit Plan91-6024903Seattle11,147$1.8B
Seattle Childrens Healthcare System91-1250116Seattle331,258$1.7B
Fred Hutchinson Cancer Center91-1935159Seattle211,994$1.7B
Fortive Corporation47-5654583Everett210,801$1.6B
Washington Permanente Medical Group, P.C.91-1841629Renton22,746$1.6B
Slalom, Inc.84-1246887Seattle215,615$1.6B
BOT, Western WA Laborers-Employers Pension Trust91-6022315Bothell110,033$1.5B
Avista Corporation91-0462470Spokane23,163$1.5B
Board of Trustees, Puget Sound Electrical Workers Pension Trust91-6180333Seattle14,745$1.3B
Swedish Health Services91-0433740Renton614,830$1.3B
BOT, WA State Plumbing and Pipefitting Industry Pension Plan91-6029141Tukwila15,015$1.3B
Premera91-1662324Mountlake Terrace48,662$1.3B
F5, Inc.91-1714307Seattle26,014$1.2B
Expeditors International of Washington, Inc.91-1069248Seattle934,384$1.2B
Blue Origin, LLC61-1770771Kent225,844$1.2B
NASH Holdings LLC90-1012631Seattle34,006$1.2B
MOSS Adams LLP91-0189318Seattle38,659$1.1B
Board of Trustees, Western Metal Industry Pension Plan91-6033499Seattle11,637$1.0B
Gates Foundation56-2618866Seattle36,671$1.0B
Recreational Equipment, Inc.91-0656890Sumner227,060$1.0B
Northwest Ironworkers Retirement Plan Board of Trustees91-6123688Seattle13,183$854.4M
Columbia Banking System, Inc.91-1422237Tacoma24,955$849.9M
Zillow Group, Inc.47-1645716Seattle212,689$849.8M
Davis Wright Tremaine LLP91-0839480Seattle43,286$845.9M
Automotive Machinists Pension Trust91-6123687Seattle1491$843.9M
Board of Trustees, Pacific Coast Benefits Trust Fund91-1032878Seattle149,438$838.3M
Boeing Employees' Credit Union91-0219435Seattle39,097$761.3M
Nintendo of America Inc.13-3024042Redmond34,689$758.7M
NAES Corporation91-1111672Issaquah35,280$756.1M
Carrix, Inc.91-1653735Seattle510,245$753.7M
The Association of University Physicians91-1220843Seattle36,101$727.4M
Lynden Incorporated91-1169184Seattle34,344$706.2M
Confluence Health91-0647181Wenatchee23,948$697.1M
Saltchuk Resources, Inc.91-1186367Seattle210,429$669.8M
Clearwater Paper Corporation20-3594554Spokane74,866$666.0M
Symetra Life Insurance Company91-0742147Bellevue26,550$663.1M
Board of Trustees of the Western WA U.A. Supplemental Pension Plan91-1879397Tukwila14,139$661.1M
Board of Trustees, Alaska Laborers- Employers Retirement Fund91-6028298Seattle11,694$657.7M
Overlake Hospital Medical Center91-0652651Bellevue47,635$653.5M
Itron, Inc.91-1011792Liberty Lake25,016$650.5M
Horizon Air Industries, Inc.91-1201373Seattle26,534$631.1M
Russell Investments Group, LLC47-3735863Seattle21,195$625.0M
Board of Trustees Puget Sound Electrical Workers 401(k) Savings Plan91-6180326Seattle17,974$622.3M
Peacehealth91-0939479Vancouver57,222$603.4M
Gonzaga University91-0236600Spokane24,019$597.9M
Ironworkers District Council of the PACI Field Ironworkers Annuity TRU91-1342114Mercer Island17,218$593.8M
Board of Trustees, SEIU Healthcare NW Health20-1842198Seattle128,256$588.2M
Sound Inpatient Physicians, Inc.20-3050924Tacoma59,034$557.0M
Board of Trustees, CIC-Forest Products Retirement45-6909074Seattle31,410$525.1M
Proliance Surgeons, Inc., P.S.91-1606533Seattle23,636$516.8M
Board of Trustees AGC-IUOE Local of AGC-IUOE Local 701 Pension Trust93-6075580Seattle26,156$515.4M
Board of Trustees, SEIU 775 Secure Retirement Trust47-4321390Seattle180,027$497.7M
112/73 Retirement Trust Fund NECA - IBEW91-1167290Spokane16,481$478.9M
Seattle University91-0565006Seattle810,391$478.9M
Board of Trustees, Cement Masons and Plasterers Retirement Trust91-6066773Seattle11,419$454.7M
Children's University Medical Group91-1336707Seattle21,572$435.0M
Board of Trustees, Iron Workers Local No. 5 & IWEA52-1075473Mercer Island1817$425.2M
Washington State Council of Fire Fighters91-0729677Olympia215,524$423.3M
Board of Trustees, Western Glaziers Retirement Plan91-6050587Tukwila1887$414.0M
Board of Trustees, Washington Teamsters Welfare Trust91-6034673Seattle120,324$405.2M
Potlatchdeltic Corporation82-0156045Spokane64,545$392.0M
Colliers International USA, LLC45-3704406Seattle39,697$356.0M
The University of Puget Sound91-0564961Tacoma32,058$354.1M
Princess Cruise Lines, Ltd.98-0215899Seattle12,323$352.6M
Triple B Corporation91-1367461Seattle35,825$339.4M
Seattle Times Company91-0403890Seattle51,284$338.8M
Board of Trustees, LO 302 & 612 Intl Union of OPER91-6028570Seattle19,074$325.0M
Integra Imaging, P.S.46-1062769Spokane31,895$324.2M
Radia, Inc., P.S.91-1853574Lynnwood52,107$323.7M
Getty Images, Inc.98-0177556Seattle32,314$310.4M
PATH91-1157127Seattle21,113$300.8M
Banner Corporation91-1691604Walla Walla23,842$297.2M
Board of Trustees of the I.B.E.W. Pacific Coast Pension Fund94-6128032Spokane1905$295.5M
Valve Corporation91-2184416Bellevue2724$291.5M
Trustees of the San Diego City Employees Retiree Medical Trust45-4698959Spokane11,068$288.8M
Harnish Group Inc.91-1978007Tukwila22,414$287.1M
Parametrix, Inc.91-0914810Puyallup32,517$282.9M

EINs are drawn from the Form 5500 the employer filed with the U.S. Department of Labor. An employer’s EIN is the same across all of its plans — open a filing to confirm the sponsor name and address before relying on it.

How to find an employer’s EIN in Washington

Every employer that sponsors a retirement or health plan files a Form 5500 that lists its nine-digit Employer Identification Number. Find a Washington company in the table above, or run a Form 5500 search by company name to pull the filing and read the EIN directly from it.

For a broader view of plans in the state — including industry breakdowns and the largest plans by assets — see Form 5500 plans in Washington. New to these filings? Start with What is Form 5500?

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