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IO - As of  04/30/25, 04:51:03 AM:   165 Insider Transactions.

Sector: Technology    Industry: Scientific & Technical Instruments
Prev Close:$6.12  Avg Vol(3m): 104,975  P/E: 0.00  EPS: -0.45

Email this page to a friend.    Insider Transactions for IO

Buy/Sell* Filed Date Subject Symbol Acquirer Pct Owned Details
B 2020-02-14 17:05:05.0 ION GEOPHYSICAL CORP IO Footprints Asset Management & Research 7.24% view
S 2020-02-14 12:26:32.0 ION GEOPHYSICAL CORP IO Gates Capital Management 3.2% view
B 2020-02-13 10:48:05.0 ION GEOPHYSICAL CORP IO RENAISSANCE TECHNOLOGIES LLC 7.36% view
B 2019-02-14 12:04:50.0 ION GEOPHYSICAL CORP IO Gates Capital Management 8.7% view
S 2019-02-14 11:40:32.0 ION GEOPHYSICAL CORP IO Footprints Asset Management & Research 4.85% view
B 2019-02-12 16:18:00.0 ION GEOPHYSICAL CORP IO RENAISSANCE TECHNOLOGIES LLC 7.32% view
S 2019-01-31 14:58:34.0 ION GEOPHYSICAL CORP IO Invesco Ltd 4.9% view
S 2019-01-31 10:36:10.0 ION GEOPHYSICAL CORP IO Bagaria Rajay 5.02% view
S 2019-01-31 10:31:29.0 ION GEOPHYSICAL CORP IO Wasserstein Debt Opportunities Management 4.95% view
S 2019-01-15 10:49:50.0 ION GEOPHYSICAL CORP IO Empery Asset Management 4.99% view
B 2018-10-26 17:27:00.0 ION GEOPHYSICAL CORP IO Wasserstein Debt Opportunities Management 5.23% view
B 2018-08-20 15:53:11.0 ION GEOPHYSICAL CORP IO Bagaria Rajay 5.05% view
B 2018-02-22 10:49:15.0 ION GEOPHYSICAL CORP IO Empery Asset Management 5.25% view
S 2018-02-12 15:23:03.0 ION GEOPHYSICAL CORP IO Invesco Ltd 7.8% view
S 2017-01-10 09:38:15.0 ION GEOPHYSICAL CORP IO Invesco Ltd 10.6% view
B 2017-01-05 15:28:32.0 ION GEOPHYSICAL CORP IO Footprints Asset Management & Research 5.97% view
B 2016-11-07 15:13:02.0 ION GEOPHYSICAL CORP IO LAPEYRE JAMES M JR 10.0% view
B 2016-10-05 16:56:03.0 ION GEOPHYSICAL CORP IO LAPEYRE JAMES M JR 9.0% view
B 2016-09-12 08:01:55.0 ION GEOPHYSICAL CORP IO LAPEYRE JAMES M JR 7.8% view
S 2016-02-10 09:39:41.0 ION GEOPHYSICAL CORP IO VANGUARD GROUP INC 3.87% view
S 2016-02-05 14:44:12.0 ION GEOPHYSICAL CORP IO Invesco Ltd 17.5% view
S 2015-12-10 11:01:25.0 ION GEOPHYSICAL CORP IO BlackRock Inc 4.7% view
S 2015-12-08 13:05:31.0 ION GEOPHYSICAL CORP IO LAPEYRE JAMES M JR 4.0% view
B 2015-02-10 13:03:02.0 ION GEOPHYSICAL CORP IO VANGUARD GROUP INC 5.17% view
B 2015-02-03 15:33:52.0 ION GEOPHYSICAL CORP IO Invesco Ltd 19.4% view
S 2015-01-26 17:17:41.0 ION GEOPHYSICAL CORP IO BlackRock Inc 7.3% view
S 2014-03-11 17:25:33.0 ION GEOPHYSICAL CORP IO VILLERE ST DENIS J & CO LLC 2.14% view
S 2014-03-10 13:51:04.0 ION GEOPHYSICAL CORP IO WELLS FARGO & COMPANY 4.89% view
S 2014-02-14 09:32:07.0 ION GEOPHYSICAL CORP IO WELLINGTON MANAGEMENT CO LLP 0.22% view
B 2014-02-05 14:11:57.0 ION GEOPHYSICAL CORP IO Invesco Ltd 19.4% view
B 2014-01-29 16:22:20.0 ION GEOPHYSICAL CORP IO BlackRock Inc 7.8% view
S 2014-01-28 11:44:01.0 ION GEOPHYSICAL CORP IO WELLS FARGO & COMPANY 5.09% view
B 2014-01-10 17:01:56.0 ION GEOPHYSICAL CORP IO VILLERE ST DENIS J & CO LLC 6.49% view
B 2013-12-09 10:06:37.0 ION GEOPHYSICAL CORP IO Invesco Ltd 18.7% view
B 2013-06-10 12:58:38.0 ION GEOPHYSICAL CORP IO Invesco Ltd 10.5% view
S 2013-03-29 13:21:44.0 ION GEOPHYSICAL CORP IO WELLS FARGO & COMPANY 5.88% view
S 2013-02-14 12:29:55.0 ION GEOPHYSICAL CORP IO WELLINGTON MANAGEMENT CO LLP 5.75% view
S 2013-02-13 16:09:19.0 ION GEOPHYSICAL CORP IO WELLS FARGO & COMPANY 5.89% view
B 2013-02-13 13:04:33.0 ION GEOPHYSICAL CORP IO Invesco Ltd 9.7% view
B 2013-02-06 09:55:56.0 ION GEOPHYSICAL CORP IO BlackRock Inc 6.25% view
B 2013-01-08 15:46:57.0 ION GEOPHYSICAL CORP IO VILLERE ST DENIS J & CO LLC 5.88% view
S 2012-08-10 11:06:48.0 ION GEOPHYSICAL CORP IO FMR LLC 0.178% view
B 2012-05-11 10:38:56.0 ION GEOPHYSICAL CORP IO VILLERE ST DENIS J & CO LLC 5.12% view
S 2012-04-10 08:44:10.0 ION GEOPHYSICAL CORP IO FMR LLC 5.242% view
B 2012-02-14 12:17:40.0 ION GEOPHYSICAL CORP IO FMR LLC 12.121% view
B 2012-02-14 11:22:06.0 ION GEOPHYSICAL CORP IO WELLINGTON MANAGEMENT CO LLP 6.57% view
S 2012-02-13 12:22:12.0 ION GEOPHYSICAL CORP IO BlackRock Inc 6.23% view
B 2012-01-24 17:41:59.0 ION GEOPHYSICAL CORP IO WELLS FARGO & CO 6.12% view
S 2011-02-14 13:14:16.0 ION GEOPHYSICAL CORP IO FLETCHER ASSET MANAGEMENT INC 4.0% view
B 2011-02-10 09:19:20.0 ION GEOPHYSICAL CORP IO FMR LLC 10.148% view
S 2011-02-04 15:44:48.0 ION GEOPHYSICAL CORP IO BlackRock Inc 6.8% view
S 2011-01-20 09:53:57.0 ION GEOPHYSICAL CORP IO WELLS FARGO & CO 5.73% view
B 2010-04-01 14:35:07.0 ION GEOPHYSICAL CORP IO BGP Inc 16.6% view
B 2010-02-16 07:13:55.0 ION GEOPHYSICAL CORP IO FLETCHER ASSET MANAGEMENT INC 9.0% view
B 2010-01-20 17:48:58.0 ION GEOPHYSICAL CORP IO WELLS FARGO & CO 7.07% view
B 2010-01-08 12:05:48.0 ION GEOPHYSICAL CORP IO BlackRock Inc 10.17% view
S 2009-09-01 16:46:40.0 ION GEOPHYSICAL CORP IO GW CAPITAL INC n/a view
S 2009-08-07 15:53:12.0 ION GEOPHYSICAL CORP IO GW CAPITAL INC n/a view
B 2009-05-08 15:32:13.0 ION GEOPHYSICAL CORP IO GW CAPITAL INC n/a view
B 2009-02-17 11:10:00.0 ION GEOPHYSICAL CORP IO FLETCHER ASSET MANAGEMENT INC 8.9% view
S 2009-02-10 12:03:19.0 ION GEOPHYSICAL CORP IO NEUBERGER BERMAN INC 1.5% view
B 2009-02-10 11:09:04.0 ION GEOPHYSICAL CORP IO NEUBERGER BERMAN INC 7.934% view
S 2008-02-14 13:38:47.0 ION GEOPHYSICAL CORP IO CNH PARTNERS LLC 0.0% view
S 2008-02-14 09:18:38.0 ION GEOPHYSICAL CORP IO Clearbridge Advisors 6.59% view
S 2008-02-14 06:34:02.0 ION GEOPHYSICAL CORP IO FLETCHER ASSET MANAGEMENT INC 6.4% view
B 2008-02-12 17:26:28.0 ION GEOPHYSICAL CORP IO NEUBERGER BERMAN INC 7.355% view
S 2008-02-05 10:36:04.0 ION GEOPHYSICAL CORP IO ROYCE & ASSOCIATES LLC 2.59% view
S 2007-02-14 15:35:23.0 INPUT OUTPUT INC IO FLETCHER ASSET MANAGEMENT INC 7.8% view
B 2007-02-08 11:34:01.0 INPUT OUTPUT INC IO Clearbridge Advisors 7.41% view
S 2007-02-07 16:41:38.0 INPUT OUTPUT INC IO CNH PARTNERS LLC 6.2% view
S 2007-02-07 16:35:22.0 INPUT OUTPUT INC IO WELLS FARGO & CO 5.48% view
S 2007-01-22 12:51:09.0 INPUT OUTPUT INC IO ROYCE & ASSOCIATES LLC 5.58% view
S 2006-11-08 13:07:49.0 INPUT OUTPUT INC IO ROYCE & ASSOCIATES LLC 6.78% view
B 2006-03-03 00:00:00.0 INPUT OUTPUT INC IO WELLS FARGO & CO 7.02% view
S 2006-02-15 00:00:00.0 INPUT OUTPUT INC IO FRIESS ASSOCIATES LLC n/a view
B 2006-02-14 00:00:00.0 INPUT OUTPUT INC IO FLETCHER ASSET MANAGEMENT INC 9.0% view
B 2006-01-31 00:00:00.0 INPUT OUTPUT INC IO CNH PARTNERS LLC 6.21% view
S 2006-01-25 00:00:00.0 INPUT OUTPUT INC IO ROYCE & ASSOCIATES LLC 12.6% view
B 2005-07-14 00:00:00.0 INPUT OUTPUT INC IO CNH PARTNERS LLC 5.22% view
S 2005-03-23 00:00:00.0 INPUT OUTPUT INC IO LAITRAM LLC 10.0% view
B 2005-03-23 00:00:00.0 INPUT OUTPUT INC IO LAPEYRE JAMES M JR 11.5% view
S 2005-02-14 00:00:00.0 INPUT OUTPUT INC IO DARUMA ASSET MANAGEMENT INC 4.2% view
B 2005-02-14 00:00:00.0 INPUT OUTPUT INC IO FRIESS ASSOCIATES LLC n/a view
B 2005-02-11 00:00:00.0 INPUT OUTPUT INC IO STRONG CAPITAL MANAGEMENT INC ET AL 5.1% view
S 2005-02-10 00:00:00.0 INPUT OUTPUT INC IO STEINBERG ASSET MANAGEMENT LLC 3.51% view
S 2005-02-09 00:00:00.0 INPUT OUTPUT INC IO DIMENSIONAL FUND ADVISORS INC 2.9% view
B 2005-01-28 00:00:00.0 INPUT OUTPUT INC IO ROYCE & ASSOCIATES LLC 14.39% view
S 2004-08-05 00:00:00.0 INPUT OUTPUT INC IO PRIMECAP MANAGEMENT CO 4.78% view
S 2004-07-02 00:00:00.0 INPUT OUTPUT INC IO LAITRAM LLC 10.1% view
S 2004-07-02 00:00:00.0 INPUT OUTPUT INC IO LAPEYRE JAMES M JR 11.3% view
S 2004-05-11 00:00:00.0 INPUT OUTPUT INC IO PRIMECAP MANAGEMENT CO 5.11% view
S 2004-05-10 00:00:00.0 INPUT OUTPUT INC IO MORGAN STANLEY 0.03% view
B 2004-02-17 00:00:00.0 INPUT OUTPUT INC IO MORGAN STANLEY 6.27% view
B 2004-02-17 00:00:00.0 INPUT OUTPUT INC IO BARCLAYS GLOBAL INVESTORS NA 4.77% view
B 2004-02-12 00:00:00.0 INPUT OUTPUT INC IO DARUMA ASSET MANAGEMENT INC 6.3% view
S 2004-02-06 00:00:00.0 INPUT OUTPUT INC IO DIMENSIONAL FUND ADVISORS INC 5.54% view
S 2004-02-06 00:00:00.0 INPUT OUTPUT INC IO STEINBERG PRIEST & SLOANE CAPITAL MANAGEMENT LLC 5.46% view
S 2004-02-05 00:00:00.0 INPUT OUTPUT INC IO ICM ASSET MANAGEMENT INC 3.6% view
B 2004-02-03 00:00:00.0 INPUT OUTPUT INC IO ROYCE & ASSOCIATES LLC 12.31% view
B 2004-01-13 00:00:00.0 INPUT OUTPUT INC IO LAITRAM LLC 13.5% view
B 2004-01-13 00:00:00.0 INPUT OUTPUT INC IO LAPEYRE JAMES M JR 15.3% view
S 2003-06-10 00:00:00.0 INPUT OUTPUT INC IO PRIMECAP MANAGEMENT CO 6.51% view
S 2003-04-28 00:00:00.0 INPUT OUTPUT INC IO LAITRAM LLC 9.3% view
S 2003-04-28 00:00:00.0 INPUT OUTPUT INC IO LAPEYRE JAMES M JR 10.3% view
B 2003-02-14 00:00:00.0 INPUT OUTPUT INC IO DARUMA ASSET MANAGEMENT INC 5.8% view
B 2003-02-13 00:00:00.0 INPUT OUTPUT INC IO STEINBERG PRIEST & SLOANE CAPITAL MANAGEMENT LLC 6.4% view
B 2003-02-13 00:00:00.0 INPUT OUTPUT INC IO BARCLAYS GLOBAL INVESTORS NA 4.18% view
S 2003-02-11 00:00:00.0 INPUT OUTPUT INC IO VANGUARD HORIZON FUNDS 4.3% view
B 2003-02-11 00:00:00.0 INPUT OUTPUT INC IO DIMENSIONAL FUND ADVISORS INC 6.72% view
B 2003-02-05 00:00:00.0 INPUT OUTPUT INC IO ROYCE & ASSOCIATES LLC 12.03% view
S 2003-01-31 00:00:00.0 INPUT OUTPUT INC IO ICM ASSET MANAGEMENT INC 5.5% view
S 2002-08-07 00:00:00.0 INPUT OUTPUT INC IO SCF IV LP 5.0% view
B 2002-05-07 00:00:00.0 INPUT OUTPUT INC IO ROYCE & ASSOCIATES INC 10.42% view
S 2002-04-17 00:00:00.0 INPUT OUTPUT INC IO PRIMECAP MANAGEMENT CO 9.49% view
S 2002-03-11 00:00:00.0 INPUT OUTPUT INC IO BARCLAYS GLOBAL INVESTORS NA 3.0% view
B 2002-02-13 00:00:00.0 INPUT OUTPUT INC IO BARCLAYS GLOBAL INVESTORS NA 4.57% view
S 2002-02-12 00:00:00.0 INPUT OUTPUT INC IO VANGUARD HORIZON FUNDS 5.5% view
S 2002-02-12 00:00:00.0 INPUT OUTPUT INC IO DIMENSIONAL FUND ADVISORS INC n/a view
B 2002-02-11 00:00:00.0 INPUT OUTPUT INC IO ROYCE & ASSOCIATES INC 7.66% view
B 2002-02-05 00:00:00.0 INPUT OUTPUT INC IO ICM ASSET MANAGEMENT INC 6.1% view
S 2001-02-12 00:00:00.0 INPUT OUTPUT INC IO VANGUARD HORIZON FUND INC 5.55% view
B 2001-02-02 00:00:00.0 INPUT OUTPUT INC IO DIMENSIONAL FUND ADVISORS INC n/a view
B 2000-02-25 00:00:00.0 INPUT OUTPUT INC IO PRIMECAP MANAGEMENT CO 10.59% view
S 2000-02-11 00:00:00.0 INPUT OUTPUT INC IO FMR CORP n/a view
B 2000-02-08 00:00:00.0 INPUT OUTPUT INC IO VANGUARD HORIZON FUND INC 5.57% view
S 2000-02-07 00:00:00.0 INPUT OUTPUT INC IO MERRILL LYNCH & CO INC 3.36% view
B 1999-11-29 00:00:00.0 INPUT OUTPUT INC IO PRIMECAP MANAGEMENT CO 9.55% view
S 1999-11-10 00:00:00.0 INPUT OUTPUT INC IO MORGAN J P & CO INC 4.6% view
B 1999-10-05 00:00:00.0 INPUT OUTPUT INC IO PILGRIM BAXTER & ASSOCIATES LTD 0.0% view
B 1999-08-18 00:00:00.0 INPUT OUTPUT INC IO SCF IV LP 11.8% view
B 1999-07-13 00:00:00.0 INPUT OUTPUT INC IO PRIMECAP MANAGEMENT CO 8.22% view
B 1999-06-17 00:00:00.0 INPUT OUTPUT INC IO PRIMECAP MANAGEMENT CO 5.38% view
B 1999-04-30 00:00:00.0 INPUT OUTPUT INC IO SCF IV LP 9.0% view
S 1999-03-25 00:00:00.0 INPUT OUTPUT INC IO LAITRAM CORP 11.5% view
S 1999-02-23 00:00:00.0 INPUT OUTPUT INC IO MORGAN J P & CO INC 11.6% view
S 1999-02-12 00:00:00.0 INPUT OUTPUT INC IO FMR CORP n/a view
S 1999-02-09 00:00:00.0 INPUT OUTPUT INC IO PUTNAM INVESTMENTS INC 12.0% view
S 1999-02-09 00:00:00.0 INPUT OUTPUT INC IO PUTNAM INVESTMENTS INC 12.0% view
B 1999-02-04 00:00:00.0 INPUT OUTPUT INC IO MERRILL LYNCH & CO INC 5.7% view
S 1999-02-04 00:00:00.0 INPUT OUTPUT INC IO LAPEYRE JAMES M JR 11.7% view
B 1998-11-23 00:00:00.0 INPUT OUTPUT INC IO LAITRAM CORP 11.5% view
B 1998-11-23 00:00:00.0 INPUT OUTPUT INC IO LAPEYRE JAMES M JR 11.7% view
B 1998-10-09 00:00:00.0 INPUT OUTPUT INC IO MORGAN J P & CO INC 16.371% view
S 1998-07-13 00:00:00.0 INPUT OUTPUT INC IO MORGAN J P & CO INC 10.401% view
S 1998-02-17 00:00:00.0 INPUT OUTPUT INC IO PILGRIM BAXTER & ASSOCIATES LTD 6.33% view
S 1998-02-13 00:00:00.0 INPUT OUTPUT INC IO MORGAN J P & CO INC 16.1% view
B 1998-02-12 00:00:00.0 INPUT OUTPUT INC IO PILGRIM BAXTER & ASSOCIATES LTD 6.33% view
S 1998-02-10 00:00:00.0 INPUT OUTPUT INC IO WELLINGTON MANAGEMENT CO LLP 2.32% view
B 1997-11-07 00:00:00.0 INPUT OUTPUT INC IO MORGAN J P & CO INC 16.158% view
B 1997-08-13 00:00:00.0 INPUT OUTPUT INC IO MORGAN J P & CO INC 10.207% view
B 1997-03-12 00:00:00.0 INPUT OUTPUT INC IO PILGRIM BAXTER & ASSOCIATES LTD 1.0% view
B 1997-02-19 00:00:00.0 INPUT OUTPUT INC IO WELLS FARGO & CO 0.0558% view
S 1997-02-14 00:00:00.0 INPUT OUTPUT INC IO WELLINGTON MANAGEMENT CO LLP 11.98% view
B 1997-01-31 00:00:00.0 INPUT OUTPUT INC IO MORGAN J P & CO INC 5.6% view
S 1997-01-30 00:00:00.0 INPUT OUTPUT INC IO PUTNAM INVESTMENTS INC 12.0% view
B 1997-01-10 00:00:00.0 INPUT OUTPUT INC IO WELLINGTON MANAGEMENT CO LLP 11.98% view
S 1996-06-07 00:00:00.0 INPUT OUTPUT INC IO PUTNAM INVESTMENTS INC 12.0% view
S 1996-02-16 00:00:00.0 INPUT OUTPUT INC IO FIRST INTERSTATE BANCORP 0.019% view
S 1996-01-19 00:00:00.0 INPUT OUTPUT INC IO PUTNAM INVESTMENTS INC 12.0% view
B 1995-12-06 00:00:00.0 INPUT OUTPUT INC IO PUTNAM INVESTMENTS INC 12.0% view
B 1995-02-14 00:00:00.0 INPUT OUTPUT INC IO FIRST INTERSTATE BANCORP 8.5% view
S 1995-02-09 00:00:00.0 INPUT OUTPUT INC IO FMR CORP n/a view
S 1994-06-09 00:00:00.0 INPUT OUTPUT INC IO FMR CORP n/a view
B 1994-02-14 00:00:00.0 INPUT OUTPUT INC IO FMR CORP n/a view
B 1994-02-14 00:00:00.0 INPUT OUTPUT INC IO FIRST INTERSTATE BANCORP n/a view
* Institutions do not report transaction buy/sell types directly. To help members better understand the transactions, this column is filled by InsiderCow's best-effort interpretations.