Williams David R
Related Filers (1)
Ownership (24)
4
Tuesday, 3/15/2016
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 3/4/2016
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 2/26/2016
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 3/20/2015
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 3/6/2015
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 2/27/2015
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 3/7/2014
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 2/28/2014
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Thursday, 3/7/2013
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 3/1/2013
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 3/2/2012
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Thursday, 2/23/2012
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/2/2011
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 2/25/2011
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Thursday, 3/4/2010
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 2/26/2010
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4/A
Thursday, 5/7/2009
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 3/6/2009
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 2/27/2009
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Friday, 9/12/2008
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Thursday, 2/28/2008
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/13/2007
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
4
Thursday, 2/22/2007
NORTHWEST NATURAL GAS CO: Statement of changes in beneficial ownership of securities
3
Thursday, 1/4/2007
NORTHWEST NATURAL GAS CO: Initial statement of beneficial ownership of securities