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ION GEOPHYSICAL CORP (IO) Create: Alert

All | News | Filings
Date FiledTypeDescription
02/10/2022 SC 13G/A RENAISSANCE TECHNOLOGIES LLC reports a 0% stake in ION GEOPHYSICAL CORPORATION
01/13/2022 SC 13G/A Empery Asset Management, LP reports a 0% stake in ION Geophysical Corporation
02/11/2021 SC 13G/A Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
02/14/2020 SC 13G/A Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
02/13/2020 SC 13G/A Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
01/31/2019 SC 13G/A Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
01/31/2019 SC 13G/A Bagaria Rajay reports a 5% stake in ION Geophysical Corporation
01/31/2019 SC 13G/A Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
01/15/2019 SC 13G/A Empery Asset Management, LP reports a 5% stake in ION Geophysical Corporation
02/12/2018 SC 13G/A Invesco Ltd. reports a 7.8% stake in ION Geophysical Corp
01/10/2017 SC 13G/A Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
02/10/2016 SC 13G/A Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
02/05/2016 SC 13G/A Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend]
06/10/2013 SC 13G/A Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend]
03/29/2013 SC 13G/A Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend]
01/08/2013 SC 13G/A Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend]
04/10/2012 SC 13G/A ION GEOPHYSICAL CORP reports a 5.2% stake in ION GEOPHYSICAL CORP
02/14/2012 SC 13G/A ION GEOPHYSICAL CORP reports a 12.1% stake in ION GEOPHYSICAL CORP
02/13/2012 SC 13G/A ION GEOPHYSICAL CORP reports a 6.2% stake in ION GEOPHYSICAL CORPORATION
01/24/2012 SC 13G/A Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend]
02/14/2011 SC 13G/A ION GEOPHYSICAL CORP reports a 4% stake in ION Geophysical Corporation
02/10/2011 SC 13G/A Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend]
02/04/2011 SC 13G/A Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend]
01/20/2011 SC 13G/A ION GEOPHYSICAL CORP reports a 5.7% stake in ION GEOPHYSICAL CORP
02/16/2010 SC 13G/A FLETCHER ASSET MANAGEMENT INC reports a 9% stake in ION Geophysical Corporation
02/17/2009 SC 13G/A Form SC 13G/A -- Statement of acquisition of beneficial ownership by individuals [amend]
02/13/2009 SC 13G/A Clearbridge Advisors, LLC reports a 4.5% stake in ION Geophysical Corp Address of issuers principal executive offices: 2101Citiwest Blvd Suite 400, Building III Houston, TX 77042 United States Item 2a) Name of person filing: ClearBridge Advisors, LLC Item 2b) Address of principal business office: 620 8th Avenue New York, NY 10018 Item 2c) Citizenship: ClearBridge Advisors, LLC Delaware Limited Liability Corporation Item 2d)
02/10/2009 SC 13G/A Form SC 13G/A -- Statement of acquisition of beneficial ownership by individuals [amend]
02/10/2009 SC 13G/A NEUBERGER BERMAN INC reports a 7.9% stake in Ion Geophysical Corporation

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