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QMCO - As of  04/30/25, 11:01:49 AM:   204 Insider Transactions.

Sector: Unknown    Industry: Unknown
Prev Close:$0.00  Avg Vol(3m): 0  P/E: 0.00  EPS: 0.00

Email this page to a friend.    Insider Transactions for QMCO

Buy/Sell* Filed Date Subject Symbol Acquirer Pct Owned Details
B 2020-04-28 17:54:06.0 QUANTUM CORP QMCO B 21.44% view
B 2020-04-06 17:15:16.0 QUANTUM CORP QMCO B 20.64% view
S 2020-03-11 17:25:21.0 QUANTUM CORP QMCO VIEX Capital Advisors 4.9% view
S 2020-02-07 10:52:42.0 QUANTUM CORP QMCO TCW GROUP INC 8.8% view
S 2020-01-28 17:05:41.0 QUANTUM CORP QMCO B 16.49% view
S 2020-01-09 17:07:22.0 QUANTUM CORP QMCO VIEX Capital Advisors 8.7% view
S 2019-11-05 17:05:25.0 QUANTUM CORP QMCO VIEX Capital Advisors 10.2% view
S 2019-02-14 15:35:24.0 QUANTUM CORP QMCO Park West Asset Management LLC 0.0% view
S 2019-02-13 10:09:50.0 QUANTUM CORP QMCO Portolan Capital Management 0.09% view
B 2019-02-04 11:00:14.0 QUANTUM CORP QMCO TCW GROUP INC 10.98% view
B 2019-01-28 16:41:19.0 QUANTUM CORP QMCO B 17.13% view
B 2019-01-10 12:37:16.0 QUANTUM CORP QTM PACIFIC INVESTMENT MANAGEMENT CO LLC 10.8% view
B 2018-12-28 20:20:25.0 QUANTUM CORP QTM B 11.81% view
S 2018-07-10 08:26:19.0 QUANTUM CORP QTM BlackRock Inc 1.8% view
B 2018-02-14 16:55:32.0 QUANTUM CORP QTM Park West Asset Management LLC 6.9% view
B 2018-02-02 13:35:34.0 QUANTUM CORP QTM Portolan Capital Management 5.58% view
S 2018-02-01 09:25:59.0 QUANTUM CORP QTM BlackRock Inc 5.3% view
B 2017-11-20 16:30:27.0 QUANTUM CORP QTM Park West Asset Management LLC 5.8% view
S 2017-11-15 17:23:42.0 QUANTUM CORP QTM Starboard Value LP 2.8% view
S 2017-11-13 16:15:24.0 QUANTUM CORP QTM VIEX Capital Advisors 10.7% view
S 2017-11-09 17:25:16.0 QUANTUM CORP QTM Private Capital Management 4.51% view
B 2017-03-03 08:38:18.0 QUANTUM CORP QTM VIEX Capital Advisors 10.9% view
S 2017-02-06 16:30:45.0 QUANTUM CORP QTM Private Capital Management 5.0% view
B 2017-02-06 09:08:13.0 QUANTUM CORP QTM VIEX Capital Advisors 10.9% view
S 2016-12-07 17:16:42.0 QUANTUM CORP QTM Starboard Value LP 9.99% view
S 2016-12-06 09:00:04.0 QUANTUM CORP QTM VIEX Capital Advisors 10.9% view
S 2016-09-27 09:03:21.0 QUANTUM CORP QTM VIEX Capital Advisors 11.0% view
B 2016-07-29 17:20:54.0 QUANTUM CORP QTM SOROS FUND MANAGEMENT LLC 5.27% view
S 2016-06-10 08:42:19.0 QUANTUM CORP QTM FMR LLC 0.904% view
B 2016-06-07 09:01:13.0 QUANTUM CORP QTM VIEX Capital Advisors 11.2% view
B 2016-06-02 13:11:55.0 QUANTUM CORP QTM VIEX Capital Advisors 11.2% view
B 2016-04-28 09:15:49.0 QUANTUM CORP QTM VIEX Capital Advisors 9.9% view
S 2016-04-06 17:17:26.0 QUANTUM CORP QTM Starboard Value LP 14.2% view
S 2016-02-10 12:00:10.0 QUANTUM CORP QTM VANGUARD GROUP INC 4.85% view
B 2016-02-02 09:00:58.0 QUANTUM CORP QTM VIEX Capital Advisors 9.9% view
S 2016-01-27 12:24:59.0 QUANTUM CORP QTM BlackRock Inc 5.6% view
S 2016-01-26 20:30:16.0 QUANTUM CORP QTM Starboard Value LP 14.9% view
B 2016-01-21 09:00:24.0 QUANTUM CORP QTM VIEX Capital Advisors 7.8% view
B 2015-12-28 16:05:16.0 QUANTUM CORP QTM VIEX Special Opportunities Fund III 5.5% view
S 2015-10-07 16:40:22.0 QUANTUM CORP QTM SOROS FUND MANAGEMENT LLC 1.25% view
B 2015-08-17 16:49:25.0 QUANTUM CORP QTM Private Capital Management 6.31% view
S 2015-05-06 19:14:24.0 QUANTUM CORP QTM Starboard Value LP 16.1% view
B 2015-02-13 10:30:45.0 QUANTUM CORP QTM FMR LLC 10.81% view
B 2015-02-10 11:59:15.0 QUANTUM CORP QTM VANGUARD GROUP INC 6.04% view
B 2015-01-29 14:21:11.0 QUANTUM CORP QTM BlackRock Inc 6.7% view
S 2014-07-29 16:49:00.0 QUANTUM CORP QTM Starboard Value LP 16.5% view
S 2014-02-14 12:37:52.0 QUANTUM CORP QTM Amici Capital 3.0% view
B 2014-02-14 06:56:28.0 QUANTUM CORP QTM FMR LLC 10.719% view
B 2014-02-13 07:28:53.0 QUANTUM CORP QTM Private Capital Management 4.72% view
S 2014-02-12 13:06:48.0 QUANTUM CORP QTM VANGUARD GROUP INC 5.32% view
B 2014-01-30 11:39:34.0 QUANTUM CORP QTM BlackRock Inc 5.8% view
B 2013-05-15 17:03:30.0 QUANTUM CORP QTM Starboard Value LP 17.0% view
B 2013-03-15 17:18:59.0 QUANTUM CORP QTM Starboard Value LP 16.4% view
B 2013-02-15 11:57:33.0 QUANTUM CORP QTM PRIVATE CAPITAL MANAGEMENT n/a view
B 2013-02-14 14:07:40.0 QUANTUM CORP QTM FMR LLC 10.569% view
S 2013-02-14 13:58:30.0 QUANTUM CORP QTM AMICI CAPITAL 8.2% view
S 2013-02-14 12:51:04.0 QUANTUM CORP QTM WELLINGTON MANAGEMENT CO LLP 0.52% view
B 2013-02-13 10:26:41.0 QUANTUM CORP QTM VANGUARD GROUP INC 5.66% view
B 2013-01-30 14:51:10.0 QUANTUM CORP QTM BlackRock Inc 5.37% view
S 2012-12-10 11:17:08.0 QUANTUM CORP QTM Capital Research Global Investors 0.0% view
B 2012-11-01 16:11:49.0 QUANTUM CORP QTM Starboard Value LP 15.9% view
B 2012-05-29 16:41:32.0 QUANTUM CORP QTM SOROS FUND MANAGEMENT LLC 11.43% view
S 2012-04-10 18:06:08.0 QUANTUM CORP QTM BlackRock Inc 4.85% view
B 2012-02-14 15:58:12.0 QUANTUM CORP QTM PRIVATE CAPITAL MANAGEMENT n/a view
S 2012-02-14 11:52:00.0 QUANTUM CORP QTM WELLINGTON MANAGEMENT CO LLP 6.66% view
B 2012-02-09 13:15:09.0 QUANTUM CORP QTM BlackRock Inc 5.05% view
S 2012-02-08 14:48:38.0 QUANTUM CORP QTM Capital Research Global Investors 7.8% view
B 2012-02-06 16:46:26.0 QUANTUM CORP QTM Porter Orlin LLC 8.42% view
B 2012-01-06 16:33:15.0 QUANTUM CORP QTM SOROS FUND MANAGEMENT LLC 8.32% view
S 2011-12-09 10:54:19.0 QUANTUM CORP QTM BlackRock Inc 4.98% view
B 2011-08-15 16:44:26.0 QUANTUM CORP QTM SOROS FUND MANAGEMENT LLC 6.0% view
B 2011-08-10 15:14:59.0 QUANTUM CORP QTM FMR LLC 10.077% view
B 2011-06-30 13:56:09.0 QUANTUM CORP QTM Porter Orlin LLC 5.2% view
S 2011-02-14 19:04:01.0 QUANTUM CORP QTM NORDEA NORTH AMERICAN VALUE FUND 3.9% view
B 2011-02-14 18:41:51.0 QUANTUM CORP QTM PRIVATE CAPITAL MANAGEMENT n/a view
B 2011-02-14 18:23:34.0 QUANTUM CORP QTM FMR LLC 5.956% view
S 2011-02-11 13:11:06.0 QUANTUM CORP QTM RENAISSANCE TECHNOLOGIES LLC 2.34% view
B 2011-02-10 15:44:15.0 QUANTUM CORP QTM Capital Research Global Investors 11.0% view
B 2011-02-08 08:51:09.0 QUANTUM CORP QTM BlackRock Inc 5.27% view
S 2010-11-10 18:08:08.0 QUANTUM CORP QTM WELLS FARGO & CO 4.11% view
B 2010-10-08 12:19:00.0 QUANTUM CORP QTM BlackRock Inc 4.96% view
B 2010-08-10 16:14:04.0 QUANTUM CORP QTM PRIVATE CAPITAL MANAGEMENT n/a view
B 2010-08-06 16:03:10.0 QUANTUM CORP QTM NORDEA NORTH AMERICAN VALUE FUND 5.2% view
B 2010-07-08 18:43:35.0 QUANTUM CORP QTM Capital Research Global Investors 10.4% view
S 2010-06-23 16:54:48.0 QUANTUM CORP QTM WELLS FARGO & CO 6.09% view
B 2010-06-10 18:17:57.0 QUANTUM CORP QTM WELLS FARGO & CO 11.44% view
B 2010-02-12 15:54:55.0 QUANTUM CORP QTM NORDEA NORTH AMERICAN VALUE FUND 4.6% view
B 2010-02-11 10:31:39.0 QUANTUM CORP QTM RENAISSANCE TECHNOLOGIES LLC 5.24% view
S 2010-02-10 16:07:08.0 QUANTUM CORP QTM PRIVATE CAPITAL MANAGEMENT n/a view
B 2010-01-21 13:01:59.0 QUANTUM CORP QTM WELLS FARGO & CO 6.18% view
S 2010-01-05 13:19:58.0 QUANTUM CORP QTM HARROSH JOSEPH L 5.0% view
S 2009-01-21 10:40:33.0 QUANTUM CORP QTM Noonday Asset Management 2.2% view
B 2009-01-07 13:41:44.0 QUANTUM CORP QTM HARROSH JOSEPH L 7.9602% view
S 2008-12-10 14:22:14.0 QUANTUM CORP QTM NWQ INVESTMENT MANAGEMENT CO LLC 5.21% view
B 2008-12-04 15:24:47.0 QUANTUM CORP QTM HARROSH JOSEPH L 7.8556% view
B 2008-03-28 16:13:45.0 QUANTUM CORP QTM TENNENBAUM CAPITAL PARTNERS LLC 5.4% view
S 2008-02-14 17:13:59.0 QUANTUM CORP QTM Silver Point Capital L n/a view
S 2008-02-14 16:22:43.0 QUANTUM CORP QTM NWQ INVESTMENT MANAGEMENT CO LLC 14.19% view
S 2008-02-14 16:12:19.0 QUANTUM CORP QTM PRIVATE CAPITAL MANAGEMENT n/a view
S 2008-02-14 15:56:52.0 QUANTUM CORP QTM NORDEA NORTH AMERICAN VALUE FUND n/a view
S 2008-02-14 10:02:06.0 QUANTUM CORP QTM ELM RIDGE CAPITAL MANAGEMENT LLC 0.0% view
S 2008-02-14 09:25:05.0 QUANTUM CORP QTM Clearbridge Advisors 6.33% view
S 2008-01-23 17:33:44.0 QUANTUM CORP QTM Noonday Asset Management 5.8% view
B 2007-08-16 17:19:30.0 QUANTUM CORP DSS Silver Point Capital L 5.13% view
B 2007-07-27 16:04:37.0 QUANTUM CORP DSS NORDEA NORTH AMERICAN VALUE FUND n/a view
S 2007-02-14 16:15:20.0 QUANTUM CORP DSS PRIVATE CAPITAL MANAGEMENT n/a view
B 2007-02-14 12:44:02.0 QUANTUM CORP DSS NWQ INVESTMENT MANAGEMENT CO LLC 18.5% view
S 2007-02-13 14:54:13.0 QUANTUM CORP DSS ELM RIDGE CAPITAL MANAGEMENT LLC 5.4% view
B 2007-02-08 11:37:30.0 QUANTUM CORP DSS Clearbridge Advisors 7.37% view
B 2007-01-24 17:26:45.0 QUANTUM CORP DSS Noonday Asset Management 6.2% view
S 2006-05-24 00:00:00.0 QUANTUM CORP DSS NWQ INVESTMENT MANAGEMENT CO LLC 17.4% view
B 2006-03-16 00:00:00.0 QUANTUM CORP DSS Noonday Asset Management 5.7% view
B 2006-02-15 00:00:00.0 QUANTUM CORP DSS CAM North America 5.12% view
S 2006-02-14 00:00:00.0 QUANTUM CORP DSS PRIVATE CAPITAL MANAGEMENT n/a view
B 2006-02-14 00:00:00.0 QUANTUM CORP DSS ELM RIDGE CAPITAL MANAGEMENT LLC 5.45% view
B 2006-02-13 00:00:00.0 QUANTUM CORP DSS NWQ INVESTMENT MANAGEMENT CO LLC 23.8% view
S 2006-01-05 00:00:00.0 QUANTUM CORP DSS CITIGROUP INC 1.1% view
B 2005-10-06 00:00:00.0 QUANTUM CORP DSS ELM RIDGE CAPITAL MANAGEMENT LLC 5.26% view
S 2005-02-14 00:00:00.0 QUANTUM CORP DSS PRIVATE CAPITAL MANAGEMENT n/a view
B 2005-02-14 00:00:00.0 QUANTUM CORP DSS NWQ INVESTMENT MANAGEMENT CO LLC 15.7% view
S 2005-02-10 00:00:00.0 QUANTUM CORP DSS CITIGROUP INC 10.1% view
B 2004-11-29 00:00:00.0 QUANTUM CORP DSS NWQ INVESTMENT MANAGEMENT CO LLC 15.5% view
S 2004-02-17 00:00:00.0 QUANTUM CORP DSS CITIGROUP INC 12.5% view
S 2004-02-13 00:00:00.0 QUANTUM CORP DSS PRIVATE CAPITAL MANAGEMENT n/a view
S 2004-02-10 00:00:00.0 QUANTUM CORP DSS AXA FINANCIAL INC 4.1% view
B 2003-12-09 00:00:00.0 QUANTUM CORP DSS NWQ INVESTMENT MANAGEMENT CO LLC 10.2% view
S 2003-02-12 00:00:00.0 QUANTUM CORP DSS AXA FINANCIAL INC 9.9% view
S 2003-02-11 00:00:00.0 QUANTUM CORP DSS CITIGROUP INC 13.7% view
S 2003-02-10 00:00:00.0 QUANTUM CORP DSS PRIVATE CAPITAL MANAGEMENT n/a view
S 2002-02-15 00:00:00.0 QUANTUM CORP DSS PRIVATE CAPITAL MANAGEMENT n/a view
B 2002-02-12 00:00:00.0 QUANTUM CORP DSS AXA FINANCIAL INC 11.7% view
S 2002-02-11 00:00:00.0 QUANTUM CORP DSS J P MORGAN CHASE & CO 0.08% view
S 2002-02-06 00:00:00.0 QUANTUM CORP DSS CITIGROUP INC 18.4% view
S 2002-01-31 00:00:00.0 QUANTUM CORP DSS MELLON FINANCIAL CORP n/a view
S 2001-12-10 00:00:00.0 QUANTUM CORP DSS PRIVATE CAPITAL MANAGEMENT n/a view
S 2001-12-10 00:00:00.0 QUANTUM CORP DSS CITIGROUP INC 18.6% view
B 2001-07-11 00:00:00.0 QUANTUM CORP DSS PRIVATE CAPITAL MANAGEMENT n/a view
B 2001-02-16 00:00:00.0 QUANTUM CORP DSS CITIGROUP INC 18.9% view
B 2001-02-16 00:00:00.0 QUANTUM CORP DSS CITIGROUP INC 12.6% view
B 2001-02-14 00:00:00.0 QUANTUM CORP DSS J P MORGAN CHASE & CO 5.4% view
S 2001-02-14 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 2001-02-14 00:00:00.0 QUANTUM CORP DSS LAZARD FRERES & CO LLC 0.0% view
S 2001-02-13 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
B 2001-02-13 00:00:00.0 QUANTUM CORP DSS WELLINGTON MANAGEMENT CO LLP 14.66% view
S 2001-02-12 00:00:00.0 QUANTUM CORP DSS CAPITAL RESEARCH & MANAGEMENT CO 1.0% view
S 2001-02-12 00:00:00.0 QUANTUM CORP DSS AXA FINANCIAL INC 11.3% view
S 2001-02-01 00:00:00.0 QUANTUM CORP DSS MELLON FINANCIAL CORP 8.76% view
S 2000-12-11 00:00:00.0 QUANTUM CORP DSS CITIGROUP INC 11.2% view
B 2000-12-11 00:00:00.0 QUANTUM CORP DSS CITIGROUP INC 17.8% view
S 2000-11-13 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
B 2000-11-13 00:00:00.0 QUANTUM CORP DSS AXA FINANCIAL INC 12.2% view
S 2000-11-08 00:00:00.0 QUANTUM CORP DSS BERNSTEIN SANFORD C & CO INC 0.0% view
S 2000-11-08 00:00:00.0 QUANTUM CORP DSS BERNSTEIN SANFORD C & CO INC 0.0% view
B 2000-08-10 00:00:00.0 QUANTUM CORP DSS CITIGROUP INC 11.2% view
B 2000-07-10 00:00:00.0 QUANTUM CORP DSS WELLINGTON MANAGEMENT CO LLP 13.23% view
S 2000-03-09 00:00:00.0 QUANTUM CORP DSS MORGAN J P & CO INC 4.9% view
B 2000-02-14 00:00:00.0 QUANTUM CORP DSS CAPITAL RESEARCH & MANAGEMENT CO 5.6% view
B 2000-02-14 00:00:00.0 QUANTUM CORP DSS MORGAN J P & CO INC 5.04% view
S 2000-02-11 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
B 2000-02-11 00:00:00.0 QUANTUM CORP DSS WELLINGTON MANAGEMENT CO LLP 7.68% view
B 2000-02-09 00:00:00.0 QUANTUM CORP DSS MELLON FINANCIAL CORP 10.54% view
B 2000-02-08 00:00:00.0 QUANTUM CORP DSS BERNSTEIN SANFORD C & CO INC 13.9% view
B 2000-02-08 00:00:00.0 QUANTUM CORP DSS BERNSTEIN SANFORD C & CO INC 13.7% view
B 2000-02-03 00:00:00.0 QUANTUM CORP DSS LAZARD FRERES & CO LLC 5.07% view
B 2000-01-31 00:00:00.0 QUANTUM CORP DSS MELLON FINANCIAL CORP 9.57% view
S 1999-02-16 00:00:00.0 QUANTUM CORP DSS GOLDMAN SACHS GROUP LP 0.4% view
S 1999-02-12 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
B 1999-01-08 00:00:00.0 QUANTUM CORP DSS BERNSTEIN SANFORD CO INC 10.0% view
B 1998-02-17 00:00:00.0 QUANTUM CORP DSS GOLDMAN SACHS GROUP LP 6.6% view
S 1998-02-13 00:00:00.0 QUANTUM CORP DSS MORGAN J P & CO INC 4.0% view
S 1998-02-11 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1998-02-11 00:00:00.0 QUANTUM CORP DSS CAPITAL GROUP COMPANIES INC ET AL 3.5% view
S 1998-02-06 00:00:00.0 QUANTUM CORP DSS FRANKLIN RESOURCES INC 1.1% view
S 1998-02-06 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
B 1998-02-04 00:00:00.0 QUANTUM CORP DSS BERNSTEIN SANFORD CO INC 9.7% view
S 1997-04-09 00:00:00.0 QUANTUM CORP DSS MORGAN J P & CO INC 5.071% view
B 1997-02-14 00:00:00.0 QUANTUM CORP DSS CAPITAL GROUP COMPANIES INC ET AL 5.9% view
B 1997-02-13 00:00:00.0 QUANTUM CORP DSS FRANKLIN RESOURCES INC 6.8% view
S 1997-02-12 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1997-02-07 00:00:00.0 QUANTUM CORP DSS MORGAN J P & CO INC 10.915% view
S 1997-01-31 00:00:00.0 QUANTUM CORP DSS MORGAN J P & CO INC 12.2% view
S 1996-10-10 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1996-07-10 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1996-06-10 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1996-02-15 00:00:00.0 QUANTUM CORP DSS MORGAN J P & CO INC 14.9% view
S 1996-02-09 00:00:00.0 QUANTUM CORP DSS FRANKLIN RESOURCES INC 5.8% view
B 1996-02-09 00:00:00.0 QUANTUM CORP DSS MORGAN J P & CO INC 16.5% view
S 1995-10-13 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1995-09-28 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1995-09-19 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1995-09-18 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1995-04-21 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1995-04-06 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
B 1995-02-15 00:00:00.0 QUANTUM CORP DSS MORGAN J P & CO INC 12.3% view
S 1995-02-08 00:00:00.0 QUANTUM CORP DSS CAPITAL GROUP COMPANIES INC 3.87% view
B 1995-02-06 00:00:00.0 QUANTUM CORP DSS FRANKLIN RESOURCES INC 7.6% view
B 1994-12-09 00:00:00.0 QUANTUM CORP DSS MORGAN J P & CO INC 11.0% view
S 1994-11-25 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1994-11-14 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1994-07-29 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
S 1994-06-23 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
B 1994-06-22 00:00:00.0 QUANTUM CORP DSS FMR CORP n/a view
B 1994-02-11 00:00:00.0 QUANTUM CORP DSS CAPITAL GROUP INC 6.01% view
B 1994-01-28 00:00:00.0 QUANTUM CORP DSS FRANKLIN RESOURCES INC 6.5% 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.