Knudson Thomas C
Related Filers (5)
- Bristow Group Inc (8)
- NATCO GROUP INC (3)
- Williams Partners L.P. (2)
- MDU RESOURCES GROUP INC (2)
- Midstates Petroleum Company, Inc. (1)
- Show More ...
Ownership (53)
4
Monday, 11/4/2019
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Friday, 2/1/2019
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Wednesday, 8/1/2018
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Monday, 2/5/2018
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Friday, 8/4/2017
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Monday, 2/6/2017
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Thursday, 8/4/2016
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Friday, 2/5/2016
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Thursday, 8/6/2015
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Tuesday, 2/3/2015
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Monday, 8/4/2014
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Tuesday, 2/25/2014
Midstates Petroleum Company, Inc.: Statement of changes in beneficial ownership of securities
4
Tuesday, 2/4/2014
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Thursday, 11/21/2013
MDU RESOURCES GROUP INC: Statement of changes in beneficial ownership of securities
4
Monday, 8/5/2013
Bristow Group Inc: Statement of changes in beneficial ownership of securities
3
Thursday, 5/16/2013
Midstates Petroleum Company, Inc.: Initial statement of beneficial ownership of securities
4
Thursday, 5/16/2013
Midstates Petroleum Company, Inc.: Statement of changes in beneficial ownership of securities
4
Monday, 2/4/2013
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/20/2012
MDU RESOURCES GROUP INC: Statement of changes in beneficial ownership of securities
4
Friday, 8/3/2012
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Tuesday, 2/7/2012
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Monday, 1/9/2012
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Thursday, 12/8/2011
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/22/2011
MDU RESOURCES GROUP INC: Statement of changes in beneficial ownership of securities
4
Friday, 8/5/2011
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Tuesday, 2/8/2011
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Friday, 8/6/2010
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/18/2010
MDU RESOURCES GROUP INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 2/9/2010
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/18/2009
NATCO GROUP INC: Statement of changes in beneficial ownership of securities
4
Thursday, 8/6/2009
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/19/2009
MDU RESOURCES GROUP INC: Statement of changes in beneficial ownership of securities
4
Friday, 5/8/2009
MDU RESOURCES GROUP INC: Statement of changes in beneficial ownership of securities
4
Friday, 2/6/2009
Bristow Group Inc: Statement of changes in beneficial ownership of securities
3
Thursday, 11/6/2008
MDU RESOURCES GROUP INC: Initial statement of beneficial ownership of securities
4
Wednesday, 8/13/2008
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Thursday, 8/7/2008
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Friday, 7/11/2008
NATCO GROUP INC: Statement of changes in beneficial ownership of securities
4
Monday, 8/6/2007
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Monday, 6/4/2007
NATCO GROUP INC: Statement of changes in beneficial ownership of securities
4
Friday, 9/22/2006
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Wednesday, 8/23/2006
Williams Partners L.P.: Statement of changes in beneficial ownership of securities
4
Monday, 8/7/2006
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Friday, 7/7/2006
NATCO GROUP INC: Statement of changes in beneficial ownership of securities
4
Friday, 6/2/2006
NATCO GROUP INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 2/8/2006
Bristow Group Inc: Statement of changes in beneficial ownership of securities
4
Friday, 12/16/2005
Williams Partners L.P.: Statement of changes in beneficial ownership of securities
3
Thursday, 12/8/2005
Williams Partners L.P.: Initial statement of beneficial ownership of securities
4
Tuesday, 10/11/2005
NATCO GROUP INC: Statement of changes in beneficial ownership of securities
4
Friday, 6/3/2005
NATCO GROUP INC: Statement of changes in beneficial ownership of securities
3
Thursday, 4/7/2005
NATCO GROUP INC: Initial statement of beneficial ownership of securities
4
Monday, 9/13/2004
OFFSHORE LOGISTICS INC: Statement of changes in beneficial ownership of securities
3
Tuesday, 6/15/2004
OFFSHORE LOGISTICS INC: Initial statement of beneficial ownership of securities