# THORATEC CARDIOSYSTEMS INC /MA/

THORATEC CARDIOSYSTEMS INC /MA/ is a company headquartered in Woburn, MA, United States.

## Company overview

- **Legal name:** THORATEC CARDIOSYSTEMS INC /MA/
- **Former names in filing history:** THERMO CARDIOSYSTEMS INC (1995-12-21 to 2001-01-10)
- **Classification:** Company
- **Industry (SIC):** 3845 — Electromedical & Electrotherapeutic Apparatus
- **Headquarters:** Woburn, MA, United States
- **Incorporated in:** MA
- **Fiscal year end:** January 2
- **SEC CIK:** 0000841939

## About

THORATEC CARDIOSYSTEMS INC /MA/ is identified in the retained SEC EDGAR snapshot dated 2026-10-14. Its SEC Central Index Key is 0000841939, and its reported industry is Electromedical & Electrotherapeutic Apparatus. The retained history contains 12 filings, including 8-K filed on 2001-02-06. 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 8-K — filed 2001-02-06 — period 2001-02-06 — FORM 8-K
- Form DEF 14A — filed 2001-02-01 — period 2001-02-01 — SCHEDULE 14A INFORMATION
- Form DEF 14A — filed 2001-01-19 — period 2001-01-18 — SCHEDULE 14A INFORMATION
- Form DEF 14A — filed 2001-01-12 — period 2001-01-11 — SCHEDULE 14A INFORMATION
- Form 10-Q — filed 2000-11-09 — period 2000-09-30
- Form 10-Q — filed 2000-08-09 — period 2000-07-01
- Form 10-Q — filed 2000-05-09 — period 2000-04-01
- Form DEF 14A — filed 2000-04-18 — period 2000-04-12 — DEFINATIVE NOTICE AND PROXY STATEMENT
- Form 10-K — filed 2000-03-17 — period 2000-01-01
- Form 8-K — filed 2000-02-01 — period 2000-01-31 — FORM 8-K
- Form 10-Q — filed 1999-11-05 — period 1999-10-02
- Form SC 13G — filed 1999-08-11 — INITIAL 13G FILING

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Updated: 2026-10-23T22:21:44Z

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