WHANG JONG S
Related Filers (1)
Ownership (36)
4
Friday, 9/10/2021
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Thursday, 11/19/2020
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Monday, 3/16/2020
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Thursday, 3/12/2020
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Thursday, 11/29/2018
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/29/2017
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Thursday, 11/19/2015
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/26/2015
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Friday, 5/22/2015
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Friday, 11/21/2014
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 3/4/2014
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Friday, 2/21/2014
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Friday, 12/13/2013
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/11/2012
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Monday, 12/19/2011
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Thursday, 8/11/2011
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Monday, 2/28/2011
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Friday, 12/10/2010
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Thursday, 12/2/2010
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Thursday, 12/2/2010
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Friday, 11/19/2010
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Monday, 11/15/2010
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Thursday, 9/9/2010
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Thursday, 9/9/2010
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 8/10/2010
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/24/2009
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Thursday, 12/11/2008
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Monday, 12/10/2007
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Friday, 11/2/2007
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4/A
Tuesday, 9/25/2007
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Monday, 9/24/2007
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/12/2006
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 2/21/2006
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 2/21/2006
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 2/15/2006
AMTECH SYSTEMS INC: Statement of changes in beneficial ownership of securities
SC 13G
Friday, 9/12/1997
AMTECH SYSTEMS INC: Major Shareholders