# TRANSKARYOTIC THERAPIES INC

TRANSKARYOTIC THERAPIES INC is a company headquartered in Cambridge, MA, United States.

## Company overview

- **Legal name:** TRANSKARYOTIC THERAPIES INC
- **Classification:** Company
- **Industry (SIC):** 2836 — Biological Products, (No Diagnostic Substances)
- **Headquarters:** Cambridge, MA, United States
- **Incorporated in:** DE
- **Fiscal year end:** December 31
- **SEC CIK:** 0000885259

## About

TRANSKARYOTIC THERAPIES INC is identified in the retained SEC EDGAR snapshot dated 2026-10-14. Its SEC Central Index Key is 0000885259, and its reported industry is Biological Products, (No Diagnostic Substances). The retained history contains 12 filings, including SC 13G filed on 2006-02-10. Each filing retains its accession, filing date and original SEC document link. This historical evidence does not establish current registration, listing, ownership or financial condition.

## Recent SEC filings

- Form SC 13G — filed 2006-02-10
- Form SC 13D — filed 2005-07-21
- Form SC 13G — filed 2005-07-18 — INITIAL FILING
- Form SC 13G — filed 2005-06-30
- Form SC 13D — filed 2005-06-30
- Form 10-Q — filed 2005-05-10 — period 2005-03-31 — FORM 10-Q - TRANSKATYOTIC THERAPIES, INC.
- Form 8-K — filed 2005-05-05 — period 2005-05-05 — TRANSKARYOTIC THERAPIES, INC.
- Form 10-K/A — filed 2005-05-02 — period 2004-12-31 — TRANSKARYOTIC THERAPIES, INC. FORM 10-K/A
- Form SC 13D — filed 2005-05-02
- Form 8-K — filed 2005-04-27 — period 2005-04-21 — TRANSKARYOTIC THERAPIES, INC. FORM 8-K
- Form 8-K — filed 2005-04-15 — period 2005-04-13 — 8-K
- Form 8-K — filed 2005-03-30 — period 2005-03-24 — 8-K

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Updated: 2026-10-23T22:24:09Z

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