PSYCHEMEDICS CORP reports

Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
Acton, MA
SEC filing record 1 source field available
Fiscal year end
31 December
PSYCHEMEDICS CORP has filed 877 SEC EDGAR filings since 11 Aug 1995

SEC filing history

Showing 1-10 of 10 matching filings.

Per page
25
Current page
1
SC 13D/A File 005-39145

SC 13D/A filing

Filing date
12 Dec 2024
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC 13D/A File 005-39145

SC 13D/A filing

Filing date
05 Dec 2024
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC 13D/A File 005-39145

SC 13D/A filing

Filing date
13 Aug 2024
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC 13D/A File 005-39145

SC 13D/A filing

Filing date
10 Jun 2022
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC 13D/A File 005-39145

AMENDMENT NO. 5 TO THE SCHEDULE 13D

Filing date
10 May 2022
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC 13D/A File 005-39145

AMENDMENT NO. 4 TO THE SCHEDULE 13D

Filing date
21 Apr 2022
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC 13D/A File 005-39145

AMENDMENT NO. 3 TO THE SCHEDULE 13D

Filing date
26 Jan 2022
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC 13D/A File 005-39145

AMENDMENT NO. 2 TO THE SCHEDULE 13D

Filing date
23 Sep 2021
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC 13D/A File 005-39145

AMENDMENT NO. 1 TO THE SCHEDULE 13D

Filing date
19 Aug 2021
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC 13D File 005-39145

SC 13D filing

Filing date
30 Dec 2020
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .