TETRAD CORP reports

Company location
Omaha, NE
TETRAD CORP has filed 80 SEC EDGAR filings since 01 Aug 2025

SEC filing history

Showing 51-75 of 80 matching filings.

Per page
25
Current page
3
13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Mar 2014
SEC evidence
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Dec 2013
SEC evidence
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Sep 2013
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Jun 2013
SEC evidence
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Mar 2013
SEC evidence
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Dec 2012
SEC evidence
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Sep 2012
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Jun 2012
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Mar 2012
SEC evidence
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Dec 2011
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Sep 2011
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Jun 2011
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Mar 2011
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Dec 2010
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Sep 2010
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Jun 2010
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Mar 2010
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Dec 2009
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Sep 2009
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Jun 2009
SEC evidence
Open document Open filing
Next action
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Mar 2009
SEC evidence
Open document Open filing
Next action
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Dec 2008
SEC evidence
Open document Open filing
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Sep 2008
SEC evidence
Open document Open filing
Next action
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13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
30 Jun 2008
SEC evidence
Open document Open filing
Next action
Verify source filing
13F-HR File 028-25678

13F-HR filing

Filing date
01 Aug 2025
Reporting date
31 Mar 2008
SEC evidence
Open document Open filing
Next action
Verify source filing
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