GRIERSON DONALD K
Related Filers (2)
Ownership (43)
4
Thursday, 2/13/2020
PTC INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 2/5/2020
PTC INC.: Statement of changes in beneficial ownership of securities
4
Friday, 8/2/2019
PTC INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 3/7/2019
PTC INC.: Statement of changes in beneficial ownership of securities
4
Friday, 3/1/2019
PTC INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 8/1/2018
PTC INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/24/2018
PTC INC.: Statement of changes in beneficial ownership of securities
4
Friday, 3/9/2018
PTC INC.: Statement of changes in beneficial ownership of securities
4
Friday, 8/4/2017
PTC INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/25/2017
PTC INC.: Statement of changes in beneficial ownership of securities
4
Friday, 3/3/2017
PTC INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 2/9/2017
PTC INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 8/4/2016
PTC INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 3/3/2016
PTC INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/3/2015
PTC INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 8/5/2015
PTC INC.: Statement of changes in beneficial ownership of securities
4
Friday, 5/8/2015
PTC INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 3/5/2015
PTC INC.: Statement of changes in beneficial ownership of securities
4
Monday, 3/10/2014
PTC INC.: Statement of changes in beneficial ownership of securities
4
Friday, 3/7/2014
PTC INC.: Statement of changes in beneficial ownership of securities
4
Friday, 3/8/2013
PTC INC.: Statement of changes in beneficial ownership of securities
4
Monday, 2/4/2013
PTC INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 12/5/2012
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 8/16/2012
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 8/2/2012
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 3/8/2012
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 2/1/2012
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Friday, 9/9/2011
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/11/2011
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 3/10/2011
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Friday, 3/12/2010
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Friday, 3/5/2010
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 5/14/2009
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Monday, 5/11/2009
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 3/6/2008
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Friday, 5/18/2007
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Friday, 3/9/2007
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Monday, 11/6/2006
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 3/2/2006
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Friday, 7/29/2005
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 3/4/2004
PARAMETRIC TECHNOLOGY CORP: Statement of changes in beneficial ownership of securities
4
Friday, 10/10/2003
ALPHA TECHNOLOGIES GROUP INC: Statement of changes in beneficial ownership of securities
5
Tuesday, 12/10/2002
ALPHA TECHNOLOGIES GROUP INC: Annual statement of changes in beneficial ownership of securities