EntityWire/Massachusetts business entity search →/ALEXION PHARMACEUTICALS, INC.
Employer with a benefit plan
ALEXION PHARMACEUTICALS, INC.
The Employer Identification Number (EIN) for ALEXION PHARMACEUTICALS, INC. is 85-4136092.
At a glance
- EIN
- 85-4136092 · 854136092
- Legal name
- ALEXION PHARMACEUTICALS, INC.
- Address on file
- 121 SEAPORT BLVD, BOSTON, MA 02210
- Records show
- Employer with a benefit plan; state registration
- Latest record
- 2026-09-05
State registration
Florida Division of Corporations (Sunbiz) bulk data · Texas Comptroller active franchise taxpayers file · records as of 2026-09-05
- Texas registration
- Active · Foreign profit corporation
- Source: Texas Comptroller · as of 2026-09-05
- Texas document number
- 0804821643
- Source: Texas Comptroller · as of 2026-09-05
- Registered agent
- CORPORATION SERVICE COMPANY DBA CSC - LAWYERS INCO
- Source: Texas Comptroller · as of 2026-09-05
- Florida registration
- Active · Foreign profit corporation
- Source: Florida registry · as of 2026-07-10
- Florida document number
- F06000001745
- Source: Florida registry · as of 2026-07-10
- Registered in Florida
- 2006-03-20
- Source: Florida registry · as of 2026-07-10
- Registered agent
- CORPORATION SERVICE COMPANY
- Source: Florida registry · as of 2026-07-10
- Last registry activity
- 2022-10-03
- Source: Florida registry · as of 2026-07-10
Benefit plans
DOL Form 5500 filings (EFAST2) · records as of 2025-10-09
- Benefit plan 515, 2024 filing
- ALEXION PHARMACEUTICALS, INC. SEVERANCE PLAN
- Source: DOL 5500 · as of 2025-10-09
- Participants (start of year)
- 2,712
- Source: DOL 5500 · as of 2025-10-09
- Plan features
- Severance pay
- Source: DOL 5500 · as of 2025-10-09
- Plan type
- Single-employer plan
- Source: DOL 5500 · as of 2025-10-09
- Business code (NAICS)
- 541700
- Source: DOL 5500 · as of 2025-10-09
- Benefit plan 1, 2023 filing
- ALEXION 401(K) PLAN
- Source: DOL 5500 · as of 2024-10-14
What this record is
Public filings that carry this EIN (DOL Form 5500 filings (EFAST2), Florida Division of Corporations (Sunbiz) bulk data and Texas Comptroller active franchise taxpayers file), shown as filed. Nothing is scraped from the IRS, and a public-record match is not IRS TIN validation.
What it is not
Registry status, formation date, and registered agent come from the Secretary of the Commonwealth, Corporations Division; see the Massachusetts business entity search.
If something is wrong
A name, address, or classification here is what the source published. To correct the source, file with it; to have this page removed, see corrections and removal.
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