Delaware Employer EIN Lookup
Use this DelawareEIN lookup to find an employer’s Employer Identification Number from its public Form 5500 filing. 5,178 employers based in Delaware have filed a Form 5500, covering 5,738 retirement and health plans with $60.0B in reported assets. The largest are listed below with their EIN — open any employer to see the full filing.
Largest employers in Delaware by EIN
Form 5500 search →| Employer | EIN | City | Plans | Participants | Assets |
|---|---|---|---|---|---|
| EIDP, Inc. | 51-0014090 | Wilmington | 6 | 22,032 | $10.4B |
| Astrazeneca Pharmaceuticals LP | 23-2967016 | Wilmington | 6 | 53,390 | $9.7B |
| Corteva Agriscience, LLC | 35-1781118 | Wilmington | 3 | 28,298 | $7.0B |
| W.L. GORE & Associates, Inc. | 51-0083365 | Newark | 3 | 25,943 | $4.4B |
| Dupont de Nemours, Inc. | 81-1224539 | Wilmington | 5 | 39,938 | $3.4B |
| Christiana Care Health Services Inc. | 51-0103684 | Wilmington | 4 | 40,667 | $2.8B |
| Ashland Inc. | 81-2587835 | Wilmington | 4 | 3,031 | $1.4B |
| The Chemours Company | 46-5626518 | Wilmington | 2 | 7,905 | $964.8M |
| Atkins US Holdings, Inc. | 98-0180721 | Wilmington | 1 | 4,326 | $894.6M |
| The SNC-Lavalin Corporation | 73-0972002 | Wilmington | 1 | 4,179 | $801.7M |
| Cobham Benefits Holding, LLC | 99-4364674 | Wilmington | 1 | 222 | $762.4M |
| Solenis, LLC | 46-5612095 | Wilmington | 2 | 6,280 | $715.0M |
| Navient Corporation | 46-4054283 | Wilmington | 1 | 1,698 | $694.0M |
| Incyte Corporation | 94-3136539 | Wilmington | 2 | 3,750 | $611.7M |
| Bayhealth Medical Center, Inc. | 51-0064318 | Dover | 8 | 17,679 | $572.3M |
| AAA Club Alliance Inc. | 23-0758010 | Wilmington | 7 | 10,438 | $562.4M |
| CSC | 51-0009810 | Wilmington | 2 | 6,062 | $544.0M |
| Beebe Medical Center | 51-0067938 | Lewes | 4 | 6,855 | $397.7M |
| Syngenta Corporation | 52-2274691 | Wilmington | 1 | 835 | $386.2M |
| Wilmington Savings Fund Society, FSB | 51-0054940 | Wilmington | 3 | 4,625 | $382.8M |
| SLM Corporation | 92-2304918 | Newark | 3 | 5,222 | $304.0M |
| Enovis Corporation | 54-1887631 | Wilmington | 2 | 4,157 | $292.4M |
| Richards, Layton & Finger, P.A. | 51-0226371 | Wilmington | 2 | 630 | $284.7M |
| The Siegfried Group, LLP | 51-0378135 | Wilmington | 2 | 2,628 | $252.4M |
| Chesapeake Utilities Corporation | 51-0064146 | Dover | 2 | 2,483 | $220.4M |
| Lululemon Athletica Inc. | 20-3842867 | Wilmington | 1 | 16,468 | $219.2M |
| Morris, Nichols, Arsht & Tunnell LLP | 51-0081771 | Wilmington | 3 | 377 | $178.4M |
| United Electric Supply Company, Inc. | 51-0102767 | New Castle | 3 | 693 | $168.7M |
| International Specialty Products, Inc. | 51-0376469 | Wilmington | 2 | 1,683 | $167.1M |
| Potter Anderson & Corroon LLP | 51-0080985 | Wilmington | 3 | 502 | $152.2M |
| The Bancorp, Inc. | 23-3016517 | Wilmington | 2 | 1,472 | $142.5M |
| Interdigital, Inc. | 82-4936666 | Wilmington | 2 | 428 | $138.2M |
| Young Conaway Stargatt & Taylor, LLP | 51-0082644 | Wilmington | 2 | 502 | $131.4M |
| Anesthesia Services, P.A. | 51-0298419 | New Castle | 5 | 289 | $126.2M |
| Wilmington University, Inc. | 51-0107088 | New Castle | 2 | 2,553 | $118.3M |
| Burris Logistics | 52-1518037 | Milford | 2 | 1,512 | $101.1M |
| BD of TTE of PLUM & Pipe LU No. 74 Pipefitters LU No. 74 Annuity Fund | 22-2913742 | Wilmington | 1 | 986 | $98.6M |
| Sentinel Transportation, LLC | 51-0392463 | Wilmington | 3 | 2,422 | $96.5M |
| Risepoint, LLC | 27-2009059 | Claymont | 2 | 2,878 | $94.6M |
| Qnity Electronics, Inc. | 33-2037337 | Wilmington | 3 | 9,531 | $84.8M |
| Horizon Services, LLC | 36-4411626 | Newark | 1 | 2,426 | $83.1M |
| Artesian Resources Corporation | 51-0002090 | Newark | 2 | 545 | $80.3M |
| First State Orthopaedics, P.A. | 51-0297303 | Newark | 3 | 1,381 | $78.3M |
| Noramco LLC | 58-1471426 | Wilmington | 2 | 762 | $77.5M |
| Morris James LLP | 51-0023480 | Wilmington | 2 | 304 | $74.2M |
| The Kendal Corporation | 23-2688382 | Newark | 3 | 3,642 | $73.5M |
| Taghleef Industries, Inc. | 51-0295865 | Newark | 1 | 567 | $72.2M |
| SPI Pharma | 51-0108237 | Wilmington | 3 | 406 | $70.1M |
| St. Andrew's School of Delaware, Inc. | 51-0079506 | Middletown | 3 | 320 | $69.9M |
| Delaware Electric Cooperative, Inc. | 51-0011975 | Greenwood | 3 | 353 | $69.7M |
| Labware Holdings, Inc. | 51-0309786 | Wilmington | 3 | 694 | $66.5M |
| Tower Hill School | 51-0065745 | Wilmington | 2 | 327 | $64.7M |
| Brandywine Trust Company, LLC | 26-3978969 | Hockessin | 1 | 75 | $59.4M |
| IKO Industries, Inc. | 16-1007213 | Wilmington | 2 | 958 | $58.6M |
| Nephrology Associates, P.A. | 51-0123099 | Newark | 4 | 465 | $57.9M |
| QPS, LLC | 51-0371092 | Newark | 2 | 926 | $56.0M |
| Neil Services, Inc. | 98-0066503 | Wilmington | 1 | 79 | $56.0M |
| Nexpera Midco, LLC | 99-3849456 | Newarark | 1 | 306 | $55.9M |
| Associated Builders and Contractors, Inc., Delaware Chapter | 51-0101354 | New Castle | 1 | 1,269 | $55.2M |
| Wilmington Friends School, Inc. | 51-0064310 | Wilmington | 2 | 291 | $54.5M |
| Best EGG Services, LLCF/K/a MA | 83-2312213 | Wilmington | 2 | 1,094 | $52.3M |
| Florida Public Utilities Company | 59-0539080 | Dover | 1 | 46 | $49.1M |
| Regional Orthopaedic Associates, P.A. | 51-0366909 | Wilmington | 2 | 361 | $47.8M |
| Zeneca, Inc. | 51-0112320 | Wilmington | 2 | 0 | $44.7M |
| Grant & Eisenhofer, P.A. | 52-2019724 | Wilmington | 2 | 373 | $43.2M |
| Delaware Park Management Company, LLC | 11-3790086 | Wilmington | 3 | 1,403 | $42.6M |
| The Lycra Company LLC | 30-0995943 | Wilmington | 2 | 838 | $42.6M |
| Imasco Holdings Group, Inc. | 13-4007022 | Wilmington | 1 | 0 | $42.6M |
| Applied Control Engineering Inc. | 51-0333862 | Newark | 2 | 359 | $42.2M |
| The Tatnall School, Inc. | 51-0071443 | Wilmington | 1 | 115 | $42.0M |
| Hertrich Family of Automobile Dealers | 51-0302019 | Seaford | 2 | 1,408 | $41.8M |
| LL Flooring Holdings Inc. | 27-1310817 | Bear | 1 | 35 | $41.1M |
| Hatzel & Buehler, Inc. | 13-0828930 | Wilmington | 2 | 735 | $41.0M |
| Ashby & Geddes, P.A. | 23-2193414 | Wilmington | 1 | 35 | $40.7M |
| Marlette Funding, LLC | 46-3428783 | Wilmington | 2 | 1,169 | $40.6M |
| PATS Aircraft, LLC | 20-0469257 | Georgetown | 4 | 424 | $37.5M |
| Gordon, Fournaris & Mammarella, P.A. | 51-0361926 | Wilmington | 2 | 72 | $37.2M |
| PCS Retirement, LLC | 23-3038464 | Wilmington | 2 | 746 | $37.2M |
| Ntirety, Inc. | 26-4826233 | Newark | 1 | 167 | $36.6M |
| Magris TALC USA, Inc. | 85-4142985 | Wilmington | 1 | 233 | $35.7M |
| Delaware Claims Processing Facility, LLC. | 20-5453231 | Wilmington | 2 | 462 | $35.6M |
| Iron Workers Local 451 Joint Board of Trustees | 51-0264123 | Wilmington | 1 | 212 | $35.2M |
| Nixon Uniform Service, Inc. | 51-0108047 | New Castle | 2 | 1,063 | $34.4M |
| Maron Marvel Bradley Anderson & Tardy LLC | 51-0375264 | Wilmington | 2 | 423 | $34.2M |
| Asbury Carbons, Inc. & SUBS | 22-0744000 | Wilmington | 2 | 144 | $32.6M |
| I.G. Burton and Company, Inc. | 51-0102421 | Milford | 2 | 783 | $32.3M |
| Prickett, Jones & Elliott, P.A. | 51-0214528 | Wilmington | 1 | 26 | $32.1M |
| Sussex Emergency Associates, L.L.C. | 51-0381623 | Newark | 1 | 36 | $32.0M |
| Sanford School | 51-0064331 | Hockessin | 2 | 331 | $31.9M |
| Gunnip & Company LLP | 51-0076769 | Wilmington | 1 | 32 | $31.9M |
| Garrett Transportation I, Inc. | 82-4723195 | Wilmington | 1 | 198 | $31.0M |
| Agilebits USA, Inc. | 85-0946691 | Wilmington | 2 | 1,153 | $30.9M |
| John R. Seiberlich Inc. | 51-0350878 | New Castle | 1 | 86 | $30.8M |
| Metal Masters Foodservice Equipment & Co., Inc. | 51-0320417 | Clayton | 1 | 313 | $30.7M |
| International Fresh Produce Association | 87-3495767 | Newark | 2 | 95 | $30.0M |
| Dental Management Strategies, LLC | 51-0562439 | Wilmington | 2 | 156 | $29.0M |
| Schmittinger & Rodriguez, P.A. | 51-0119469 | Dover | 2 | 76 | $28.5M |
| Cardiology Physicians, P.A. | 51-0363108 | Newark | 2 | 93 | $28.3M |
| Bear Industries, Inc. | 51-0239956 | Newark | 1 | 65 | $28.2M |
| Infobase Holdings, Inc. | 13-3720604 | Dover | 1 | 127 | $28.1M |
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 Delaware
Every employer that sponsors a retirement or health plan files a Form 5500 that lists its nine-digit Employer Identification Number. Find a Delaware 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 Delaware. New to these filings? Start with What is Form 5500?

