PSYCHEMEDICS CORP reports

Company location: Acton, MA
Fiscal year end: 31 December

PSYCHEMEDICS CORP has filed 877 SEC EDGAR filings since 11 Aug 1995

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SEC filing history

Showing 526-550 of 609 matching filings.

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22

DEF 14A File 001-13738

SCHEDULE 14A

Filing date: 06 Apr 2012
Reporting date: 22 May 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

10-K File 001-13738

10-K

Filing date: 09 Mar 2012
Reporting date: 31 Dec 2011
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-13738

FORM 8-K

Filing date: 23 Feb 2012
Reporting date: 23 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-39145

SCHEDULE 13G HOLDINGS REPORT AMENDMENT

Filing date: 15 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-39145

13G/A

Filing date: 13 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-13738

CURRENT REPORT

Filing date: 25 Jan 2012
Reporting date: 19 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

10-Q File 001-13738

FORM 10-Q

Filing date: 04 Nov 2011
Reporting date: 30 Sep 2011
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-13738

FORM 8-K

Filing date: 03 Nov 2011
Reporting date: 10 Aug 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

10-Q File 001-13738

FORM 10-Q

Filing date: 16 Aug 2011
Reporting date: 30 Jun 2011
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

NT 10-Q File 001-13738

FORM NT 10-Q

Filing date: 16 Aug 2011
Reporting date: 30 Jun 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-13738

FORM 8-K

Filing date: 12 Aug 2011
Reporting date: 10 Aug 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-39145

PMD 13GA 073111

Filing date: 10 Aug 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-39145

SCHEDULE 13G HOLDINGS REPORT AMENDMENT

Filing date: 10 Aug 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-39145

SC 13G/A filing

Filing date: 02 Aug 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 26 May 2011
Reporting date: 24 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 26 May 2011
Reporting date: 24 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 26 May 2011
Reporting date: 24 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 26 May 2011
Reporting date: 24 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 26 May 2011
Reporting date: 24 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 26 May 2011
Reporting date: 24 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 26 May 2011
Reporting date: 24 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

S-8 File 333-174531

S-8 filing

Filing date: 26 May 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-13738

8-K filing

Filing date: 26 May 2011
Reporting date: 24 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 18 May 2011
Reporting date: 16 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 18 May 2011
Reporting date: 16 May 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

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