SIEGEL MARK S
Related Filers (3)
Ownership (33)
4
Wednesday, 5/13/2020
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/30/2019
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 4/25/2019
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 5/3/2018
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 4/26/2018
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 5/4/2017
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/27/2016
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 4/23/2015
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 6/12/2014
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/29/2014
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 4/24/2014
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/24/2013
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Friday, 3/29/2013
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Monday, 12/31/2012
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 4/26/2012
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 4/28/2011
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 4/29/2010
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 4/30/2009
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 5/8/2008
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/29/2008
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/24/2007
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 8/3/2006
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 8/3/2005
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Friday, 4/29/2005
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Thursday, 3/10/2005
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/2/2005
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/23/2004
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/3/2004
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 10/27/2004
VARIFLEX INC: Statement of changes in beneficial ownership of securities
SC 13D/A
Tuesday, 8/31/2004
VARIFLEX INC: Major Shareholders
4
Friday, 4/30/2004
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 2/11/2004
PATTERSON UTI ENERGY INC: Statement of changes in beneficial ownership of securities
3
Tuesday, 5/15/2001
DISCOVERY LABORATORIES INC /DE/: Initial statement of beneficial ownership of securities