Computer Storage Devices - Latest Activist Disclosures

This table shows recent activist investor (Schedule 13D) filings made in this industry. Any investor or hedge fund that makes an investment with the intention of influencing management is considered an activist investor and must file a 13D.

Date Form Target Company Investor Shares Ownership
(Percent)		 Ownership Change
(Percent)
2025-02-21 13D/A QMCO / Quantum Corporation Blue Torch Capital LP 135,763 2.30
2025-01-06 13D QMCO / Quantum Corporation Blue Torch Capital LP 405,978 7.70
2024-08-15 13D/A QMCO / Quantum Corporation Pacific Investment Management Co Llc 10,248,322 21.76 0.00
2023-09-08 13D/A STX / Seagate Technology Holdings plc VA Partners I, LLC 7,687,070 3.70 -42.79
2023-09-01 13D/A STX / Seagate Technology Holdings plc VA Partners I, LLC 13,437,070 6.50 -22.67
2023-07-14 13D/A QMCO / Quantum Corporation Pacific Investment Management Co Llc 10,248,322 17.76 0.00
2023-06-14 13D/A QMCO / Quantum Corporation Pacific Investment Management Co Llc 10,248,322 17.76
2022-08-24 13D/A QMCO / Quantum Corporation Pacific Investment Management Co Llc
2022-08-12 13D/A QMCO / Quantum Corporation Pacific Investment Management Co Llc 10,248,322 15.36 0.00
2022-08-08 13D/A QMCO / Quantum Corporation B. Riley Financial, Inc. 5,025,471 4.90 -41.86
2022-06-10 13D/A QMCO / Quantum Corporation B. Riley Financial, Inc. 6,846,974 6.70 -7.33
2022-04-28 13D/A QMCO / Quantum Corporation B. Riley Financial, Inc. 7,388,889 8.20 -14.51
2022-04-26 13D/A QMCO / Quantum Corporation Pacific Investment Management Co Llc 10,248,322 17.29
2022-03-28 13D QMCO / Quantum Corporation Pacific Investment Management Co Llc 6,370,070 9.54
2021-11-01 13D/A QMCO / Quantum Corporation B. Riley Financial, Inc. 5,454,840 9.40
2021-05-04 13D/A STX / Seagate Technology Holdings plc VA Partners I, LLC 17,377,070 7.60 -24.48
2021-04-28 13D/A QMCO / Quantum Corporation B. Riley Financial, Inc. 7,703,351 13.60 -10.88
2021-03-05 13D/A STX / Seagate Technology Holdings plc VA Partners I, LLC 23,011,223 9.70 -27.08
2021-02-08 13D/A QMCO / Quantum Corporation B. Riley Financial, Inc. 8,643,351 15.80
2021-02-08 13D/A QMCO / Quantum Corporation B. Riley Financial, Inc. 8,643,351 15.80
2020-04-29 13D/A QMCO / Quantum Corporation B. Riley Financial, Inc. 8,547,611 21.44 0.00
2020-04-28 13D/A QMCO / Quantum Corporation B. Riley Financial, Inc. 8,547,611 21.44 3.91
2020-04-06 13D QMCO / Quantum Corporation B. Riley Financial, Inc. 8,226,241 20.64 35.05
2020-03-11 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 1,957,275 4.90 -39.12
2020-01-09 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 3,215,145 8.70 -14.45
2019-11-05 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 3,758,145 10.20 1.81
2019-10-30 13D/A STX / Seagate Technology Holdings plc VA Partners I, LLC 31,557,653 11.70 6.90
2019-02-08 13D/A STX / Seagate Technology Holdings plc VA Partners I, LLC 29,520,160 10.50 14.90
2018-08-14 13D/A STX / Seagate Technology Holdings plc VA Partners I, LLC 25,691,483 8.90 19.73
2018-01-25 13D/A STX / Seagate Technology Holdings plc VA Partners I, LLC 21,458,600 7.40 0.00
2017-11-15 13D/A QMCO / Quantum Corporation Starboard Value LP 957,067 2.80 -96.73
2017-11-13 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 3,691,464 10.70 -87.50
2017-11-09 13D/A QMCO / Quantum Corporation Private Capital Management, LLC
2017-09-01 13D/A STX / Seagate Technology Holdings plc VA Partners I, LLC 21,458,600 7.40 2.18
2017-08-11 13D STX / Seagate Technology Holdings plc VA Partners I, LLC 21,000,000 7.20 0.00
2017-08-10 13D STX / Seagate Technology Holdings plc VA Partners I, LLC 21,000,000 7.20
2017-03-03 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 29,531,722 10.90 0.00
2017-02-06 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 29,531,722 10.90 0.00
2017-02-06 13D/A QMCO / Quantum Corporation Private Capital Management, LLC
2016-12-07 13D/A QMCO / Quantum Corporation Starboard Value LP 29,241,259 9.99 -28.14
2016-12-06 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 29,531,722 10.90 0.00
2016-09-27 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 29,531,722 11.00 0.00
2016-06-07 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 29,531,722 11.20 0.00
2016-06-02 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 29,531,722 11.20 12.54
2016-04-28 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 26,241,996 9.90 0.00
2016-04-06 13D/A QMCO / Quantum Corporation Starboard Value LP 40,691,259 14.20 -4.07
2016-02-02 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 26,241,996 9.90 26.91
2016-01-27 13D/A QMCO / Quantum Corporation Starboard Value LP 42,417,263 14.90 -4.43
2016-01-21 13D/A QMCO / Quantum Corporation VIEX Capital Advisors, LLC 20,677,265 7.80
2015-12-28 13D QMCO / Quantum Corporation Viex Special Opportunities Fund Iii, Lp 14,495,790 5.50