Ion Geophysical

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Ion Geophysical
TickerIO
CIK #0000866609
CUSIP462044207
SectorEnergy & Transportation - Oil & Gas Field Exploration Services
Address2105 Citywest Blvd Suite 400, Houston, TX 770422839
Source [EDGAR]
CIK Filing 2011 - 2025
[0000866609] 10-K
[0000866609] 10-Q
[0000866609] 3
[0000866609] 4
[0000866609] 5
[0000866609] 8-K
[0000866609] D
[0000866609] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Footprints Asset Management & Research ION Geophysical Corp [2020-02-14] 7.24
Gates Capital Management Inc ION Geophysical Corp [2019-02-14] 8.7
Footprints Asset Management & Research ION Geophysical Corp [2019-02-14] 4.85
Renaissance Technologies LLC ION Geophysical Corp [2019-02-12] 7.32
Wasserstein Debt Opportunities Management LP ION Geophysical Corp [2018-10-26] 5.16
Bagaria Rajay ION Geophysical Corp [2018-08-20] 5.05
Empery Asset Management LP ION Geophysical Corp [2018-02-22] 5.25
Footprints Asset Management & Research ION Geophysical Corp [2017-01-05] 5.97
Vanguard Group Inc ION Geophysical Corp [2015-02-10] 5.17
Villere St Denis J & Co LLC ION Geophysical Corp [2014-01-10] 6.49
Invesco Ltd ION Geophysical Corp [2013-02-13] 9.7
Villere St Denis J & Co LLC ION Geophysical Corp [2012-05-11] 5.12
Wellington Management Co LLP ION Geophysical Corp [2012-02-14] 6.57
Form 3/4/5 Filer 2011 - 2025
Lambert Dale J
Powers Matthew R
Usher Christopher Theron
Lapeyre James M Jr
Morrison Michael L
McGovern Michael Y
Barr David H
Nelson S James
Zheng Huasheng
Wininger Tina L
Seitz John N
Hanson R Brian
Williamson Ken
Schwausch Scott
Myers Franklin
BATE Steven
Hulme Colin
Jennings Michael
Hao Huimin
Seely Jamey S
Heinlein Gregory J
Roland David L
Moffat David
Peebler Robert P
Bernitsas Nikolaos
Form 13F Holdings
Firm Period DFND Voting Shares
Renaissance Technologies LLC [2020-09-30] SOLE 1.0 1.0
Vanguard Group Inc [2020-09-30] SOLE 0.0 0.5
Deutsche Bank AG [2020-09-30] DFND 0.3 0.3
Neuberger Berman Group LLC [2020-09-30] DFND 0.2 0.3
Morgan Stanley [2020-09-30] DFND 0.2 0.2
Acadian Asset Management LLC [2020-09-30] DFND 0.2 0.2
BlackRock Inc. [2020-09-30] SOLE 0.2 0.2
Dimensional Fund Advisors LP [2020-09-30] DFND 0.2 0.2
Geode Capital Management LLC [2020-09-30] DFND 0.1 0.1
Squarepoint Ops LLC [2020-09-30] DFND 0.0 0.1
Bridgeway Capital Management Inc [2020-09-30] SOLE 0.1 0.1
Raymond James Financial Services Advisors Inc [2020-09-30] SOLE 0.0 0.1
Invesco Ltd. [2020-09-30] DFND 0.0 0.0
Northern Trust Corp [2020-09-30] DFND 0.0 0.0
Farmers & Merchants Investments Inc [2020-09-30] SOLE 0.0 0.0
Susquehanna Fundamental Investments LLC [2020-09-30] DFND 0.0 0.0
Millennium Management LLC [2020-09-30] SOLE 0.0 0.0
Wells Fargo & Co/Mn [2020-09-30] DFND 0.0 0.0
GSA Capital Partners LLP [2020-09-30] SOLE 0.0 0.0
Bank of New York Mellon Corp [2020-09-30] OTR 0.0 0.0
Arrowstreet Capital Limited Partnership [2020-09-30] DFND 0.0 0.0
Citigroup Inc [2020-09-30] DFND 0.0 0.0
California Public Employees Retirement System [2020-09-30] SOLE 0.0 0.0
Susquehanna International Group LLP [2020-09-30] DFND 0.0 0.0
Group One Trading LP [2020-09-30] SOLE 0.0 0.0
Dupont Capital Management Corp [2020-09-30] SOLE 0.0 0.0
Northern Trust Corp [2020-09-30] OTR 0.0 0.0
UBS Group AG [2020-09-30] DFND 0.0 0.0
Bank of New York Mellon Corp [2020-09-30] DFND 0.0 0.0
Tower Research Capital LLC (TRC) [2020-09-30] DFND 0.0 0.0
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