PSYCHEMEDICS CORP — 4 Filings
336 4 filings on record
This page lists all 4 filings submitted to the SEC by PSYCHEMEDICS CORP (PMDI), sorted by most recent first. Each row links to the full filing on EdgarLookup. PSYCHEMEDICS CORP has filed 336 4 documents with the SEC since 1995. To view all SEC filings by PSYCHEMEDICS CORP, see the full filings list.
All
10-K
10-K/A
10-K405
10-Q
10-Q/A
10KSB
10KSB/A
10QSB
144
15-12G
25
3
4
4/A
424B3
5
8-A12B
8-A12B/A
8-K
8-K/A
ARS
CERTAMX
CERTNAS
CORRESP
DEF 14A
DEFA14A
DEFR14A
EFFECT
NT 10-Q
POS AM
PRE 14A
PRER14A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13E3
SC 13E3/A
SC 13G
SC 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 4 | OWNERSHIP DOCUMENT | 0001104659-24-129515 | Dec 17, 2024 | Dec 13, 2024 |
| 4 | PRIMARY DOCUMENT | 0001420506-24-002619 | Dec 12, 2024 | Dec 10, 2024 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-24-128142 | Dec 12, 2024 | Dec 10, 2024 |
| 4 | PRIMARY DOCUMENT | 0001420506-24-002607 | Dec 5, 2024 | Dec 3, 2024 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-24-001252 | Jan 24, 2024 | Jan 22, 2024 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-018458 | Sep 25, 2023 | Sep 21, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-016986 | Aug 22, 2023 | Aug 17, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-016936 | Aug 21, 2023 | Aug 17, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-016937 | Aug 21, 2023 | Aug 17, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-016940 | Aug 21, 2023 | Aug 17, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-016935 | Aug 21, 2023 | Aug 17, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-016938 | Aug 21, 2023 | Aug 17, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-016939 | Aug 21, 2023 | Aug 17, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-012076 | May 24, 2023 | May 22, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-012074 | May 24, 2023 | May 22, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-012077 | May 24, 2023 | May 22, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-011266 | May 16, 2023 | May 15, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-011265 | May 16, 2023 | May 15, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-23-011264 | May 16, 2023 | May 15, 2023 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-22-024226 | Dec 20, 2022 | Dec 16, 2022 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-22-022214 | Nov 15, 2022 | Nov 11, 2022 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-22-022211 | Nov 15, 2022 | Nov 11, 2022 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 0001062993-22-022213 | Nov 15, 2022 | Nov 11, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000034 | Aug 16, 2022 | Aug 12, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000035 | Aug 16, 2022 | Aug 12, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000025 | May 24, 2022 | May 20, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000026 | May 24, 2022 | May 20, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000027 | May 24, 2022 | May 20, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000028 | May 24, 2022 | May 20, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000024 | May 24, 2022 | May 20, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000029 | May 24, 2022 | May 20, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000022 | May 24, 2022 | May 20, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000023 | May 24, 2022 | May 20, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000011 | May 17, 2022 | May 13, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000012 | May 17, 2022 | May 13, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000013 | May 17, 2022 | May 13, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000010 | May 17, 2022 | May 13, 2022 |
| 4 | OWNERSHIP DOCUMENT | 0000921895-22-001329 | Apr 21, 2022 | Apr 19, 2022 |
| 4 | — | 0001171520-22-000248 | Apr 11, 2022 | Apr 7, 2022 |
| 4 | PRIMARY DOCUMENT | 0001408209-22-000005 | Apr 7, 2022 | Apr 5, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000004 | Apr 7, 2022 | Apr 5, 2022 |
| 4 | OWNERSHIP DOCUMENT | 0000921895-22-000908 | Mar 18, 2022 | Mar 16, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-22-000002 | Jan 27, 2022 | Jan 25, 2022 |
| 4 | PRIMARY DOCUMENT | 0001843082-21-000028 | Nov 16, 2021 | Nov 12, 2021 |
| 4 | PRIMARY DOCUMENT | 0001843082-21-000029 | Nov 16, 2021 | Nov 12, 2021 |
| 4 | PRIMARY DOCUMENT | 0001843082-21-000030 | Nov 16, 2021 | Nov 12, 2021 |
| 4 | PRIMARY DOCUMENT | 0001843082-21-000020 | May 14, 2021 | May 13, 2021 |
| 4 | PRIMARY DOCUMENT | 0001843082-21-000021 | May 14, 2021 | May 13, 2021 |
| 4 | PRIMARY DOCUMENT | 0001843082-21-000022 | May 14, 2021 | May 13, 2021 |
| 4 | PRIMARY DOCUMENT | 0001843082-21-000024 | May 14, 2021 | May 13, 2021 |