# GREAT WESTERN BANCORPORATION INC

GREAT WESTERN BANCORPORATION INC is a company headquartered in Omaha, NE, United States.

## Company overview

- **Legal name:** GREAT WESTERN BANCORPORATION INC
- **Former names in filing history:** SPECTRUM BANCORPORATION INC (1999-08-02 to 2003-05-09)
- **Classification:** Company
- **Industry (SIC):** 6021 — National Commercial Banks
- **Headquarters:** Omaha, NE, United States
- **Incorporated in:** IA
- **Fiscal year end:** June 30
- **SEC CIK:** 0001088381

## About

GREAT WESTERN BANCORPORATION INC is identified in the retained SEC EDGAR snapshot dated 2026-10-14. Its SEC Central Index Key is 0001088381, and its reported industry is National Commercial Banks. The retained history contains 12 filings, including 8-K filed on 2006-03-27. 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 2006-03-27 — period 2006-03-21 — FORM 8-K
- Form 8-K — filed 2006-03-21 — period 2006-03-20 — FORM 8-K
- Form 8-K — filed 2006-03-15 — period 2006-03-10 — FORM 8-K
- Form 10-Q — filed 2006-01-31 — period 2005-12-31 — FORM 10-Q
- Form 10-K/A — filed 2006-01-30 — period 2005-06-30 — AMENDMENT NO. 1 TO FORM 10-K
- Form 8-K — filed 2006-01-13 — period 2006-01-13 — FORM 8-K
- Form 10-Q — filed 2005-10-31 — period 2005-09-30 — FORM 10-Q
- Form 10-K — filed 2005-09-02 — period 2005-06-30 — FORM 10-K
- Form 8-K — filed 2005-06-14 — period 2005-06-13 — FORM 8-K
- Form 10-Q — filed 2005-05-02 — period 2005-03-31 — FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2005
- Form 8-K — filed 2005-02-08 — period 2005-02-04 — FORM 8-K
- Form 8-K — filed 2005-02-02 — period 2005-01-31 — FORM 8-K

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

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