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 126-150 of 609 matching filings.

Per page
25
Current page
6
SC 13D/A File 005-39145

AMENDMENT NO. 5 TO THE SCHEDULE 13D

Filing date
10 May 2022
Reporting date
Not listed
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4

OWNERSHIP DOCUMENT

Filing date
21 Apr 2022
Reporting date
19 Apr 2022
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SC 13D/A File 005-39145

AMENDMENT NO. 4 TO THE SCHEDULE 13D

Filing date
21 Apr 2022
Reporting date
Not listed
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4

4 filing

Filing date
11 Apr 2022
Reporting date
07 Apr 2022
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4

PRIMARY DOCUMENT

Filing date
07 Apr 2022
Reporting date
05 Apr 2022
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3

PRIMARY DOCUMENT

Filing date
07 Apr 2022
Reporting date
04 Apr 2022
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4

PRIMARY DOCUMENT

Filing date
07 Apr 2022
Reporting date
05 Apr 2022
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4/A

4/A filing

Filing date
31 Mar 2022
Reporting date
30 Mar 2022
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4

OWNERSHIP DOCUMENT

Filing date
18 Mar 2022
Reporting date
16 Mar 2022
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3

OWNERSHIP DOCUMENT

Filing date
18 Mar 2022
Reporting date
16 Mar 2022
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SC 13G/A File 005-39145

SC 13G/A

Filing date
14 Feb 2022
Reporting date
Not listed
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SC 13G/A File 005-39145

SC 13G/A filing

Filing date
14 Feb 2022
Reporting date
Not listed
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SC 13G/A File 005-39145

SC 13G/A filing

Filing date
11 Feb 2022
Reporting date
Not listed
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4

PRIMARY DOCUMENT

Filing date
27 Jan 2022
Reporting date
25 Jan 2022
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SC 13D/A File 005-39145

AMENDMENT NO. 3 TO THE SCHEDULE 13D

Filing date
26 Jan 2022
Reporting date
Not listed
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4

PRIMARY DOCUMENT

Filing date
16 Nov 2021
Reporting date
12 Nov 2021
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4

PRIMARY DOCUMENT

Filing date
16 Nov 2021
Reporting date
12 Nov 2021
SEC evidence
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