# 21ST CENTURY INSURANCE GROUP

21ST CENTURY INSURANCE GROUP is a company headquartered in Woodland Hills, CA, United States.

## Company overview

- **Legal name:** 21ST CENTURY INSURANCE GROUP
- **Former names in filing history:** 20TH CENTURY INDUSTRIES (1994-12-27 to 1999-02-05)
- **Classification:** Company
- **Industry (SIC):** 6331 — Fire, Marine & Casualty Insurance
- **Headquarters:** Woodland Hills, CA, United States
- **Incorporated in:** CA
- **Fiscal year end:** December 31
- **SEC CIK:** 0000100331

## About

21ST CENTURY INSURANCE GROUP is identified in the retained SEC EDGAR snapshot dated 2026-10-14. Its SEC Central Index Key is 0000100331, and its reported industry is Fire, Marine & Casualty Insurance. The retained history contains 12 filings, including 8-K filed on 2007-09-28. 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 2007-09-28 — period 2007-09-27 — 8-K
- Form 8-K — filed 2007-08-16 — period 2007-08-15 — 8-K
- Form 10-Q — filed 2007-07-31 — period 2007-06-30 — 21ST CENTURY INSURANCE GROUP 10-Q 6-30-2007
- Form 8-K — filed 2007-05-18 — period 2007-05-14 — 8-K
- Form 8-K — filed 2007-05-18 — period 2007-05-14 — 8-K
- Form 8-K — filed 2007-05-16 — period 2007-05-15 — 8-K
- Form 10-Q — filed 2007-05-03 — period 2007-03-31 — 21ST CENTURY INSURANCE GROUP 10-Q 3-31-2007
- Form 10-K/A — filed 2007-04-26 — period 2006-12-31 — 21ST CENTURY INSURANCE 10-K/A 12-31-2006
- Form 8-K — filed 2007-03-14 — period 2007-03-08 — 21ST CENTURY INSURANCE FORM 8-K 3/8/2007
- Form 8-K — filed 2007-03-02 — period 2007-02-26 — 21ST CENTURY INSURANCE 8-K 2-26-2007
- Form 10-K — filed 2007-02-27 — period 2006-12-31 — 21ST CENTURY INSURANCE 10-K 12-31-2006
- Form 8-K — filed 2007-01-31 — period 2007-01-25 — 21ST CENTURY INSURANCE 8-K 01-25-2007

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Updated: 2026-10-23T22:26:34Z

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