4
PRIMARY DOCUMENT
- Filing date
- 12 Nov 2020
- Reporting date
- 11 Nov 2020
- SEC evidence
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PSYCHEMEDICS CORP reports
- Company location
- Acton, MA
- Fiscal year end
- 31 December
Company
Names, identifiers, and filing context for this profile.
1 identity field
SEC filing record 1 source field available
PSYCHEMEDICS CORP has filed 877 SEC EDGAR filings since 11 Aug 1995
SEC filing history
Showing 201-225 of 609 matching filings.
Per page
25
Current page
9
10-Q
File 001-13738
FORM 10-Q
- Filing date
- 10 Nov 2020
- Reporting date
- 30 Sep 2020
- SEC evidence
- Open document Open filing Open XBRL
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8-K
File 001-13738
FORM 8-K
- Filing date
- 09 Nov 2020
- Reporting date
- 09 Nov 2020
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8-K
File 001-13738
FORM 8-K
- Filing date
- 09 Nov 2020
- Reporting date
- 04 Nov 2020
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8-K
File 001-13738
FORM 8-K
- Filing date
- 10 Sep 2020
- Reporting date
- 03 Sep 2020
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10-Q
File 001-13738
FORM 10-Q
- Filing date
- 13 Aug 2020
- Reporting date
- 30 Jun 2020
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8-K
File 001-13738
FORM 8-K
- Filing date
- 12 Aug 2020
- Reporting date
- 12 Aug 2020
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4
PRIMARY DOCUMENT
- Filing date
- 03 Jun 2020
- Reporting date
- 01 Jun 2020
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8-K
File 001-13738
FORM 8-K
- Filing date
- 20 May 2020
- Reporting date
- 14 May 2020
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10-Q
File 001-13738
FORM 10-Q
- Filing date
- 15 May 2020
- Reporting date
- 31 Mar 2020
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8-K
File 001-13738
FORM 8-K
- Filing date
- 13 May 2020
- Reporting date
- 13 May 2020
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8-K
File 001-13738
FORM 8-K
- Filing date
- 07 May 2020
- Reporting date
- 01 May 2020
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4
PRIMARY DOCUMENT
- Filing date
- 06 May 2020
- Reporting date
- 04 May 2020
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DEFA14A
File 001-13738
DEFA14A
- Filing date
- 28 Apr 2020
- Reporting date
- Not listed
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DEFA14A
File 001-13738
DEFA14A
- Filing date
- 28 Apr 2020
- Reporting date
- Not listed
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DEF 14A
File 001-13738
DEF 14A
- Filing date
- 27 Mar 2020
- Reporting date
- 14 May 2020
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SC 13G/A
File 005-39145
TIETON CAPITAL MANAGEMENT 13G/A
- Filing date
- 03 Mar 2020
- Reporting date
- Not listed
- SEC evidence
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10-K/A
File 001-13738
FORM 10-K/A
- Filing date
- 27 Feb 2020
- Reporting date
- 31 Dec 2019
- SEC evidence
- Open document Open filing
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10-K
File 001-13738
FORM 10-K
- Filing date
- 25 Feb 2020
- Reporting date
- 31 Dec 2019
- SEC evidence
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SC 13G/A
File 005-39145
SC 13G/A filing
- Filing date
- 14 Feb 2020
- Reporting date
- Not listed
- SEC evidence
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SC 13G/A
File 005-39145
AMENDED 13G FOR PSYCHEMEDICS CORPORATION
- Filing date
- 14 Feb 2020
- Reporting date
- Not listed
- SEC evidence
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SC 13G/A
File 005-39145
SC 13G/A filing
- Filing date
- 13 Feb 2020
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
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8-K
File 001-13738
FORM 8-K
- Filing date
- 11 Feb 2020
- Reporting date
- 11 Feb 2020
- SEC evidence
- Open document Open filing
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8-K
File 001-13738
FORM 8-K
- Filing date
- 04 Feb 2020
- Reporting date
- 30 Jan 2020
- SEC evidence
- Open document Open filing
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SC 13G/A
File 005-39145
SCHEDULE 13G/A
- Filing date
- 03 Feb 2020
- Reporting date
- Not listed
- SEC evidence
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