EntityWire/Massachusetts business entity search →/KARYOPHARM THERAPEUTICS INC.
Employer with a benefit plan
KARYOPHARM THERAPEUTICS INC.
The Employer Identification Number (EIN) for KARYOPHARM THERAPEUTICS INC. is 26-3931704.
At a glance
- EIN
- 26-3931704 · 263931704
- Legal name
- KARYOPHARM THERAPEUTICS INC.
- Address on file
- 85 WELLS AVENUE, SUITE 210, NEWTON, MA 02459
- Records show
- SEC filer; employer with a benefit plan; state registration
- Latest record
- 2026-09-04
State registration
Florida Division of Corporations (Sunbiz) bulk data · records as of 2026-07-10
- Florida registration
- Active · Foreign profit corporation
- Source: Florida registry · as of 2026-07-10
- Florida document number
- F18000005220
- Source: Florida registry · as of 2026-07-10
- Registered in Florida
- 2018-11-09
- Source: Florida registry · as of 2026-07-10
- Registered agent
- C T CORPORATION SYSTEM
- Source: Florida registry · as of 2026-07-10
- Last registry activity
- 2019-10-16
- Source: Florida registry · as of 2026-07-10
SEC records
SEC EDGAR company filings · records as of 2026-09-04
- SEC CIK
- 0001503802
- Source: SEC · as of 2026-09-04
- Industry (SIC)
- Pharmaceutical Preparations (2834)
- Source: SEC · as of 2026-09-04
- State of incorporation
- DE
- Source: SEC · as of 2026-09-04
- Ticker
- KPTI
- Source: SEC · as of 2026-09-04
- Latest SEC filing
- SCHEDULE 13G 2026-09-04
- Source: SEC · as of 2026-09-04
Benefit plans
DOL Form 5500 filings (EFAST2) · records as of 2025-07-30
- Benefit plan 1, 2024 filing
- KARYOPHARM THERAPEUTICS INC. 401(K) PLAN
- Source: DOL 5500 · as of 2025-07-30
- Participants (start of year)
- 546
- Source: DOL 5500 · as of 2025-07-30
- Plan features
- Profit-sharing; ERISA 404(c) plan; Participant-directed; 401(k) feature; 401(m) matching; Automatic enrollment
- Source: DOL 5500 · as of 2025-07-30
- Plan type
- Single-employer plan
- Source: DOL 5500 · as of 2025-07-30
What this record is
Public filings that carry this EIN (DOL Form 5500 filings (EFAST2), Florida Division of Corporations (Sunbiz) bulk data and SEC EDGAR company filings), 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.
Other Massachusetts businesses on file
- ATN INTERNATIONAL, INC.EIN 47-0728886
- AMUNDI US, INC.EIN 13-5657669
- AKEBIA THERAPEUTICS, INC.EIN 20-8756903
- CORIUM, LLCEIN 38-3230774
- CYNOSURE, LLCEIN 04-3125110
- RADIUS HEALTH, INC.EIN 80-0145732
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