McDonald George

Related Filers (1)

Ownership (11)

4
Monday, 6/11/2012
DAWSON GEOPHYSICAL CO: Statement of changes in beneficial ownership of securities
4
Tuesday, 8/9/2011
DAWSON GEOPHYSICAL CO: Statement of changes in beneficial ownership of securities
4
Monday, 2/7/2011
DAWSON GEOPHYSICAL CO: Statement of changes in beneficial ownership of securities
4
Wednesday, 7/28/2010
DAWSON GEOPHYSICAL CO: Statement of changes in beneficial ownership of securities
4/A
Tuesday, 10/20/2009
DAWSON GEOPHYSICAL CO: Statement of changes in beneficial ownership of securities
4
Monday, 10/5/2009
DAWSON GEOPHYSICAL CO: Statement of changes in beneficial ownership of securities
4
Thursday, 12/4/2008
DAWSON GEOPHYSICAL CO: Statement of changes in beneficial ownership of securities
4
Tuesday, 6/3/2008
DAWSON GEOPHYSICAL CO: Statement of changes in beneficial ownership of securities
4
Friday, 9/14/2007
DAWSON GEOPHYSICAL CO: Statement of changes in beneficial ownership of securities
4
Tuesday, 3/20/2007
DAWSON GEOPHYSICAL CO: Statement of changes in beneficial ownership of securities
3
Friday, 10/6/2006
DAWSON GEOPHYSICAL CO: Initial statement of beneficial ownership of securities
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