GSE Systems, Inc. GVP
Trading inactive
| Name of reporting person | Citizenship or organization | Sole voting power | Shared voting power | Sole dispositive power | Shared dispositive power | Amount beneficially owned | Percent of class | Accepted date |
|---|---|---|---|---|---|---|---|---|
| The Radoff Family Foundation | 0 | 0 | 0 | 0 | 250000 | 7.201 % | 11/10/2024 | |
| Bradley L. Radoff | 0 | 0 | 0 | 0 | 95000 | 2.736 % | 11/10/2024 | |
| Kyle J. Loudermilk | 183963 | 0 | 183963 | 11 | 183963 | 5.68 % | 06/05/2024 | |
| 2. | United States | 13 | 0 | 0 | 180914 | 180914 | 5.963 % | 05/04/2024 |
| 2. | United States | 13 | 0 | 0 | 180914 | 180914 | 5.963 % | 05/04/2024 |
| Lind Global Partners II LLC | Delaware | 272189 | 0 | 272189 | 0 | 272189 | 9.9 % | 12/12/2023 |
| Lind Global Fund II LP | Delaware | 272189 | 0 | 272189 | 0 | 272189 | 9.9 % | 12/12/2023 |
| Jeff Easton | Delaware | 272189 | 0 | 272189 | 0 | 272189 | 9.9 % | 12/12/2023 |
| George A. Needham (4) | 0 | 1364000 | 0 | 1364000 | 1364000 | 6.5 % | 14/02/2022 | |
| Needham Asset Management, LLC (1) | 0 | 1364000 | 0 | 1364000 | 1364000 | 6.5 % | 14/02/2022 | |
| Needham Investment Management L.L.C. (2) | 0 | 1364000 | 0 | 1364000 | 1364000 | 6.5 % | 14/02/2022 | |
| Needham Aggressive Growth Fund (3) | 0 | 1364000 | 0 | 1364000 | 1364000 | 6.5 % | 14/02/2022 | |
| Polar Asset Management Partners Inc. | Canada | 0 | 0 | 0 | 0 | 0 | 0 % | 09/02/2022 |
| Needham Aggressive Growth Fund (3) | 0 | 1057625 | 0 | 1057625 | 1057625 | 5.1 % | 12/02/2021 | |
| Needham Investment Management L.L.C. (2) | 0 | 1081654 | 0 | 1081654 | 1081654 | 5.2 % | 12/02/2021 | |
| Needham Asset Management, LLC (1) | 0 | 1081654 | 0 | 1081654 | 1081654 | 5.2 % | 12/02/2021 | |
| George A. Needham (4) | 0 | 1081654 | 0 | 1081654 | 1081654 | 5.2 % | 12/02/2021 | |
| Polar Asset Management Partners Inc. | Canada | 1239300 | 0 | 1239300 | 0 | 1239300 | 6.01 % | 09/02/2021 |
| PVAM Perlus Microcap Fund L.P. | Cayman Islands | 0 | 0 | 0 | 0 | 0 | 0 % | 05/02/2021 |
| 10 | 2616525 | 0 | 2616525 | 0 | 2616525 | 13 % | 13/02/2020 | |
| 13%(2) | 2616525 | 0 | 2616525 | 0 | 2616525 | 13 % | 13/02/2020 | |
| 13%(2) | 2616525 | 0 | 2616525 | 0 | 2616525 | 13 % | 13/02/2020 | |
| 13%(2) | 2616525 | 0 | 2616525 | 0 | 2616525 | 13 % | 13/02/2020 | |
| Polar Asset Management Partners Inc. | Canada | 2000000 | 0 | 2000000 | 0 | 2000000 | 9.91 % | 11/02/2020 |
| JACK SILVER | UNITED STATES | 0 | 0 | 0 | 0 | 0 | 0 % | 08/05/2019 |
| inc. profit sharing plan | UNITED STATES | 0 | 0 | 0 | 0 | 0 | 0 % | 08/05/2019 |
| PARTNERSHIP | DELAWARE | 0 | 0 | 0 | 0 | 0 | 0 % | 08/05/2019 |
| 2 | UNITED STATES | 1440495 | 0 | 1440495 | 0 | 1440495 | 7.3 % | 14/02/2019 |
| 2. | Delaware | 808162 | 0 | 808162 | 0 | 808162 | 4.33 % | 31/03/2017 |
| JACK SILVER | UNITED STATES | 1466189 | 0 | 1466189 | 0 | 1466189 | 7.8 % | 27/02/2017 |
| RS PROPERTIES I LLC | UNITED STATES | 108374 | 0 | 108374 | 0 | 108374 | 0.6 % | 27/02/2017 |
| LP | UNITED STATES | 33495 | 0 | 33495 | 0 | 33495 | 0.2 % | 27/02/2017 |
| profit sharing plan | UNITED STATES | 1432694 | 0 | 1432694 | 0 | 1432694 | 7.7 % | 27/02/2017 |
| PVAM Holdings Ltd. | Jersey, Channel Islands | 0 | 986222 | 0 | 986222 | 986222 | 11 % | 26/10/2016 |
| PVAM Perlus Microcap Fund L.P. | Jersey, Channel Islands | 0 | 986222 | 0 | 986222 | 986222 | 11 % | 26/10/2016 |
| Pacific View Asset Management (UK) LLP | Jersey, Channel Islands | 0 | 986222 | 0 | 986222 | 986222 | 11 % | 26/10/2016 |
| Page 1 of 9 pages | Delaware | 1120892 | 0 | 1120892 | 0 | 1120892 | 6.27 % | 17/02/2015 |
| American Century Companies, Inc. | Delaware | 958418 | 958418 | 3918061 | 6.4 % | 10/07/2014 | ||
| JACK SILVER | UNITED STATES | 1132934 | 0 | 1132934 | 0 | 1132934 | 6.3 % | 11/02/2014 |
| inc. profit sharing plan | UNITED STATES | 1132934 | 0 | 1132934 | 0 | 1132934 | 6.3 % | 11/02/2014 |
| Bridgehampton Value Strategies Fund | Delaware | 0 | 622800 | 0 | 622800 | 622800 | 3.5 % | 06/02/2014 |
| Bridgehampton Capital Management LLC | Delaware | 0 | 1064400 | 0 | 1064400 | 1064400 | 6 % | 06/02/2014 |
| Charles D. Morgan | Delaware | 0 | 331600 | 0 | 331600 | 331600 | 1.9 % | 06/02/2014 |
| Kenneth E. Lee | Delaware | 0 | 1064400 | 0 | 1064400 | 1064400 | 6 % | 06/02/2014 |
| Bridgehampton Monument Fund LLC | Delaware | 0 | 110000 | 0 | 110000 | 110000 | 0.6 % | 06/02/2014 |
| Goldblatt | Delaware | 1490800 | 0 | 1490800 | 0 | 1490800 | 8.13 % | 08/02/2013 |
| Goldblatt | Delaware | 1490800 | 0 | 1490800 | 0 | 1490800 | 8.13 % | 08/02/2013 |
| Technology, LLC 01-0622776 | Delaware | 1490800 | 0 | 1490800 | 0 | 1490800 | 8.13 % | 08/02/2013 |
| JACK SILVER | UNITED STATES | 1037500 | 0 | 1037500 | 0 | 1037500 | 5.7 % | 06/02/2013 |
| sherleigh associates inc. profit sharing plan | UNITED STATES | 1037500 | 0 | 1037500 | 0 | 1037500 | 5.7 % | 06/02/2013 |
| Intracoastal Capital LLC | Delaware | 0 | 475600 | 0 | 475600 | 596886 | 4.4 % | 14/01/2013 |
| SHERLEIGH ASSOCIATES INC. PROFIT SHARING PLAN | UNITED STATES | 0 | 0 | 0 | 0 | 975804 | 5.3 % | 25/06/2012 |
| JACK SILVER | UNITED STATES | 0 | 0 | 0 | 0 | 975804 | 5.3 % | 25/06/2012 |
| NSB Advisors LLC | State of Maryland | 0 | 0 | 1362477 | 0 | 1362477 | 1 % | 09/05/2012 |
| Steven R. Becker | Texas | 0 | 906452 | 0 | 0 | 906452 | 4.9 % | 19/03/2012 |
| Becker Drapkin Management, L.P. | Texas | 0 | 906452 | 0 | 0 | 906452 | 4.9 % | 19/03/2012 |
| L.P. | Texas | 791120 | 0 | 791120 | 0 | 791120 | 4.3 % | 19/03/2012 |
| Becker Drapkin Partners, L.P. | Texas | 115332 | 0 | 115332 | 0 | 115332 | 0.6 % | 19/03/2012 |
| BC Advisors, LLC | Texas | 0 | 906452 | 0 | 0 | 906452 | 4.9 % | 19/03/2012 |
| Matthew A. Drapkin | Texas | 0 | 906452 | 0 | 0 | 906452 | 4.9 % | 19/03/2012 |
| Michael Vermut | Delaware | 0 | 0 | 0 | 0 | 0 | 0 % | 10/02/2012 |
| Newland Master Fund, Ltd. | Delaware | 0 | 0 | 0 | 0 | 0 | 0 % | 10/02/2012 |
| Newland Capital Management, LLC | Delaware | 0 | 0 | 0 | 0 | 0 | 0 % | 10/02/2012 |
| Ken Brodkowitz | Delaware | 0 | 0 | 0 | 0 | 0 | 0 % | 10/02/2012 |
| Philip J. Deutch | State of Delaware | 0 | 0 | 0 | 0 | 1314321 | 6.84 % | 05/05/2011 |
| Energy Technology Partners II, L.L.C. | State of Delaware | 0 | 0 | 0 | 0 | 1314321 | 6.84 % | 05/05/2011 |
| NGP ETP II, L.L.C. | State of Delaware | 0 | 0 | 0 | 0 | 1314321 | 6.84 % | 05/05/2011 |
| NGP Energy Technology Partners II, L.P. | State of Delaware | 0 | 0 | 0 | 0 | 1314321 | 6.84 % | 05/05/2011 |
| W. Oberweis | Illinois | 0 | 481100 | 0 | 481700 | 481700 | 2.5 % | 14/02/2011 |
| D. Oberweis | Illinois | 0 | 481100 | 0 | 481700 | 481700 | 2.5 % | 14/02/2011 |
| Asset Management, Inc. | Illinois | 0 | 481100 | 0 | 481700 | 481700 | 2.5 % | 14/02/2011 |
| Brown Advisory Holdings Incorporated ("BAHI") | Maryland | 0 | 0 | 0 | 0 | 0 | 1 % | 10/01/2011 |
| Barclays PLC | England | 296 | 0 | 296 | 0 | 296 | 0 % | 16/02/2010 |
| Cobbs Wharf Master Fund, L. P. | Grand Cayman | 0 | 0 | 0 | 0 | 0 | 0 % | 12/02/2010 |
| 51-0504477 | Delaware | 472100 | 0 | 472100 | 0 | 472100 | 2.49 % | 12/02/2010 |
| INVESTMENT MAGEMENT COMPANY, LLC #04-3409177 | BOSTON, MASSACHUSSETTS | 914549 | 0 | 1015014 | 0 | 1015014 | 5.36 % | 25/01/2010 |
| 51-0504477 | Delaware | 0 | 560487 | 0 | 560487 | 560487 | 3.49 % | 13/10/2009 |
| Cobbs Wharf Master Fund, L. P. | Grand Cayman | 0 | 560487 | 0 | 560487 | 560487 | 3.49 % | 13/10/2009 |
| Cobbs Wharf Master Fund, L. P. | Grand Cayman | 0 | 1600000 | 0 | 1600000 | 1600000 | 10.02 % | 27/03/2009 |
| 51-0504477 | Delaware | 0 | 1600000 | 0 | 1600000 | 1600000 | 10.02 % | 27/03/2009 |
| 51-0504477 | Delaware | 1600000 | 0 | 1600000 | 0 | 1600000 | 10.02 % | 10/03/2009 |
| Edward C. Johnson 3d | United States of America | 0 | 0 | 500000 | 0 | 500000 | 3.132 % | 17/02/2009 |
| FMR LLC | Delaware | 0 | 0 | 500000 | 0 | 500000 | 3.132 % | 17/02/2009 |
| 51-0504477 | Delaware | 1575000 | 0 | 1575000 | 0 | 1575000 | 9.87 % | 13/02/2009 |
| Barclays PLC | England | 1465004 | 0 | 1465004 | 0 | 1465004 | 9.18 % | 11/02/2009 |
| Wells Fargo & Company | Delaware | 1249340 | 0 | 1250310 | 0 | 1253140 | 7.85 % | 23/01/2009 |
| Wells Capital Management Incorporated | California | 1162190 | 0 | 1246990 | 0 | 1246990 | 7.81 % | 23/01/2009 |
| Barclays PLC | England | 1465104 | 0 | 1465104 | 0 | 1465104 | 9.21 % | 08/10/2008 |
| FMR LLC | Delaware | 0 | 0 | 967600 | 0 | 967600 | 6.399 % | 14/02/2008 |
| Edward C. Johnson 3d | United States of America | 0 | 0 | 967600 | 0 | 967600 | 6.399 % | 14/02/2008 |
| Wells Fargo & Company | Delaware | 1715838 | 0 | 1719638 | 0 | 1719638 | 11.37 % | 24/01/2008 |
| Wells Capital Management Incorporated | California | 1610938 | 0 | 1719638 | 0 | 1719638 | 11.37 % | 24/01/2008 |
| David W. Berry | : | 0 | 0 | 0 | 26300 | 1057103 | 7.9 % | 04/05/2007 |
| Kaizen Management, L.P. | : | 0 | 0 | 0 | 26300 | 1057103 | 7.9 % | 04/05/2007 |
| Kaizen Capital, L.L.C. | : | 0 | 0 | 0 | 26300 | 1057103 | 7.9 % | 04/05/2007 |
| Select Contrarian Value Partners, L.P. | : | 0 | 0 | 0 | 0 | 1030803 | 7.7 % | 04/05/2007 |
| Spectrum Galaxy Fund, Ltd. | : | 0 | 0 | 0 | 0 | 26300 | 0.2 % | 04/05/2007 |
| Wells Fargo & Company | Delaware | 1631019 | 0 | 1671819 | 0 | 1671819 | 12.76 % | 09/04/2007 |
| Wells Capital Management Incorporated | California | 1544219 | 0 | 1671819 | 0 | 1671819 | 12.76 % | 09/04/2007 |
| Wells Fargo & Company | Delaware | 1760198 | 0 | 1837098 | 0 | 1837098 | 19.42 % | 05/02/2007 |
| Wells Capital Management Incorporated | California | 1688398 | 0 | 1837098 | 0 | 1837098 | 19.42 % | 05/02/2007 |
| Wells Fargo & Company | Delaware | 0 | 0 | 0 | 0 | 1861913 | 20.69 % | 02/02/2006 |
| Federal ID No. 95-3692822 | California | 0 | 0 | 0 | 0 | 1839781 | 20.44 % | 02/02/2006 |
| Wells Fargo & Company | Delaware | 0 | 0 | 0 | 0 | 1530056 | 17.1 % | 21/01/2005 |
| Federal ID No. 95-3692822 | California | 0 | 0 | 0 | 0 | 1530056 | 17.1 % | 21/01/2005 |
| Abigail P. Johnson | United States of America | 0 | 0 | 290700 | 0 | 290700 | 3.408 % | 17/02/2004 |
| FMR Corp. | Delaware | 0 | 0 | 290700 | 0 | 290700 | 3.408 % | 17/02/2004 |
| Edward C. Johnson 3d | United States of America | 0 | 0 | 290700 | 0 | 290700 | 3.408 % | 17/02/2004 |
| Edward C. Johnson 3d | United States of America | 0 | 0 | 297600 | 0 | 297600 | 5.071 % | 13/02/2003 |
| FMR Corp. | Delaware | 0 | 0 | 297600 | 0 | 297600 | 5.071 % | 13/02/2003 |
| Abigail P. Johnson | United States of America | 0 | 0 | 297600 | 0 | 297600 | 5.071 % | 13/02/2003 |
| 061039378 | USA | 0 | 0 | 0 | 0 | 0 | 0 % | 15/01/2003 |
| 061039378 | USA | 404000 | 0 | 404000 | 0 | 404000 | 7.6 % | 24/01/2002 |
| Abigail P. Johnson | United States of America | 0 | 0 | 0 | 0 | 0 | 0 % | 14/02/2001 |
| Edward C. Johnson 3d | United States of America | 0 | 0 | 0 | 0 | 0 | 0 % | 14/02/2001 |
| FMR Corp. | Commonwealth of Massachusetts | 0 | 0 | 0 | 0 | 0 | 0 % | 14/02/2001 |
| 061039378 | USA | 366600 | 0 | 366600 | 0 | 366600 | 7.2 % | 08/01/2001 |
| FMR Corp. | Commonwealth of Massachusetts | 0 | 0 | 353800 | 0 | 353800 | 6.983 % | 11/02/2000 |
| Edward C. Johnson 3d | United States of America | 0 | 0 | 353800 | 0 | 353800 | 6.983 % | 11/02/2000 |
| Abigail P. Johnson | United States of America | 0 | 0 | 353800 | 0 | 353800 | 6.983 % | 11/02/2000 |
| 061039378 | USA | 364600 | 0 | 364600 | 0 | 364600 | 7 % | 19/01/2000 |
| Edward C. Johnson 3d | United States of America | 0 | 0 | 197000 | 0 | 197000 | 3.888 % | 12/02/1999 |
| Abigail P. Johnson | United States of America | 0 | 0 | 197000 | 0 | 197000 | 3.888 % | 12/02/1999 |
| FMR Corp. | Commonwealth of Massachusetts | 0 | 0 | 197000 | 0 | 197000 | 3.888 % | 12/02/1999 |
| FMR Corp. | Commonwealth of Massachusetts | 0 | 0 | 277800 | 0 | 277800 | 5.48 % | 10/02/1998 |
| Abigail P. Johnson | United States of America | 0 | 0 | 277800 | 0 | 277800 | 5.48 % | 10/02/1998 |
| Edward C. Johnson 3d | United States of America | 0 | 0 | 277800 | 0 | 277800 | 5.48 % | 10/02/1998 |
| George J. Pedersen | United States | 56250 | 797825 | 56250 | 797825 | 854075 | 16.9 % | 13/02/1997 |
| John A. Moore, Jr. | United States | 83925 | 0 | 83925 | 0 | 83925 | 1.7 % | 13/02/1997 |
| ManTech International Corporation | New Jersey | 797825 | 0 | 797825 | 0 | 797825 | 15.7 % | 13/02/1997 |
| 04-2507163) | Commonwealth of Massachusetts | 0 | 0 | 331600 | 0 | 331600 | 6.55 % | 11/02/1997 |
| Edward C. Johnson 3d | United States of America | 0 | 0 | 331600 | 0 | 331600 | 6.55 % | 11/02/1997 |
| Abigail P. Johnson | United States of America | 0 | 0 | 331600 | 0 | 331600 | 6.55 % | 11/02/1997 |
| 04-2507163) | Commonwealth of Massachusetts | 0 | 0 | 305600 | 0 | 305600 | 7.23 % | 14/02/1996 |
| ###-##-####) | United States of America | 0 | 0 | 305600 | 0 | 305600 | 7.23 % | 14/02/1996 |
| ###-##-####) | United States of America | 0 | 0 | 305600 | 0 | 305600 | 7.23 % | 14/02/1996 |