SCHAFFER MICHAEL I

Related Filers (1)

Ownership (59)

4
Wednesday, 5/24/2023
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/16/2023
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/20/2022
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/15/2022
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/24/2022
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/17/2022
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/16/2021
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Friday, 5/14/2021
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Friday, 11/20/2020
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Friday, 11/13/2020
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Friday, 6/14/2019
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/7/2019
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 5/2/2019
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Monday, 9/10/2018
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 5/10/2018
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Monday, 5/7/2018
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/2/2018
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 9/6/2017
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 5/25/2017
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Monday, 5/15/2017
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/9/2017
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Friday, 5/5/2017
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/3/2017
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/24/2016
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Monday, 5/16/2016
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/11/2016
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Monday, 5/2/2016
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 2/16/2016
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 6/17/2015
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/27/2015
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Monday, 5/11/2015
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Friday, 5/1/2015
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Monday, 5/12/2014
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/7/2014
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/12/2014
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 2/13/2014
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/29/2013
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/28/2013
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/24/2013
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/13/2012
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/29/2012
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 5/24/2012
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 5/17/2012
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/10/2012
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 5/26/2011
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/18/2011
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 5/12/2011
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Friday, 4/8/2011
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Friday, 6/18/2010
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Friday, 4/9/2010
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/19/2009
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/13/2009
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Monday, 5/19/2008
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/14/2008
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Friday, 5/25/2007
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Monday, 5/14/2007
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Monday, 5/15/2006
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 5/26/2005
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
4
Friday, 5/21/2004
PSYCHEMEDICS CORP: Statement of changes in beneficial ownership of securities
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