HARVARD BIOSCIENCE INC — All Filings
1,002 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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10-K
10-K/A
10-K405
10-Q
10-Q/A
3
3/A
4
4/A
424B3
424B4
425
5
5/A
8-A12B
8-A12B/A
8-A12G
8-K
8-K/A
ARS
CORRESP
CT ORDER
DEF 14A
DEFA14A
DEFR14A
EFFECT
NT 10-K
NT 10-Q
PRE 14A
S-1
S-1/A
S-3
S-3/A
S-4
S-4/A
S-8
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13D
SCHEDULE 13G
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 4 | — | 0001171843-26-001843 | Mar 23, 2026 | Mar 20, 2026 |
| SCHEDULE 13D | — | 0001171843-26-001839 | Mar 23, 2026 | — |
| 4 | — | 0001171843-26-001732 | Mar 18, 2026 | Mar 17, 2026 |
| 4 | — | 0001171843-26-001689 | Mar 18, 2026 | Mar 16, 2026 |
| 4 | — | 0001171843-26-001645 | Mar 17, 2026 | Mar 16, 2026 |
| 8-K | FORM 8-K | 0001171843-26-001614 | Mar 17, 2026 | — |
| 10-K | FORM 10-K | 0001171843-26-001548 | Mar 13, 2026 | Dec 31, 2025 |
| 8-K | FORM 8-K | 0001171843-26-001504 | Mar 12, 2026 | — |
| 8-K | FORM 8-K | 0001171843-26-001447 | Mar 10, 2026 | Mar 6, 2026 |
| 8-K | FORM 8-K | 0001171843-26-001384 | Mar 6, 2026 | — |
| SCHEDULE 13G/A | — | 0001019432-26-000003 | Feb 12, 2026 | — |
| 8-K | FORM 8-K | 0001171843-26-000721 | Feb 10, 2026 | — |
| EFFECT | — | 9999999995-26-000490 | Feb 9, 2026 | — |
| 424B3 | FORM 424B3 | 0001171843-26-000702 | Feb 9, 2026 | — |
| DEF 14A | DEF 14A | 0001171843-26-000541 | Jan 30, 2026 | Mar 6, 2026 |
| S-3 | FORM S-3 | 0001171843-26-000539 | Jan 30, 2026 | — |
| 8-K | FORM 8-K | 0001171843-26-000516 | Jan 29, 2026 | Jan 23, 2026 |
| PRE 14A | PRE 14A | 0001171843-26-000345 | Jan 20, 2026 | Jan 20, 2025 |
| 8-K | FORM 8-K | 0001171843-26-000343 | Jan 20, 2026 | Jan 19, 2026 |
| 8-K | FORM 8-K | 0001171843-26-000203 | Jan 12, 2026 | — |
| 4 | — | 0001171843-25-008127 | Dec 30, 2025 | Dec 17, 2025 |
| 3 | — | 0001171843-25-008126 | Dec 30, 2025 | Dec 17, 2025 |
| 8-K | FORM 8-K | 0001171843-25-007972 | Dec 17, 2025 | — |
| 8-K | FORM 8-K | 0001171843-25-007776 | Dec 5, 2025 | — |
| 10-Q | FORM 10-Q | 0001171843-25-007099 | Nov 6, 2025 | Sep 30, 2025 |
| 8-K | FORM 8-K | 0001171843-25-007071 | Nov 6, 2025 | — |
| SCHEDULE 13G/A | — | 0001019432-25-000028 | Nov 3, 2025 | — |
| 4 | — | 0001171843-25-006325 | Oct 7, 2025 | Sep 5, 2025 |
| 3 | — | 0001171843-25-006324 | Oct 7, 2025 | Sep 5, 2025 |
| 8-K | FORM 8-K | 0001171843-25-006260 | Oct 3, 2025 | Oct 2, 2025 |
| 8-K | FORM 8-K | 0001171843-25-005787 | Sep 9, 2025 | Sep 5, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-080209 | Aug 19, 2025 | Aug 15, 2025 |
| 8-K | FORM 8-K | 0001171843-25-005377 | Aug 13, 2025 | Aug 12, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-076302 | Aug 11, 2025 | Aug 8, 2025 |
| 10-Q | FORM 10-Q | 0001171843-25-005287 | Aug 11, 2025 | Jun 30, 2025 |
| 8-K | FORM 8-K | 0001171843-25-005288 | Aug 11, 2025 | Aug 8, 2025 |
| 8-K | FORM 8-K | 0001171843-25-005262 | Aug 11, 2025 | — |
| SCHEDULE 13G/A | — | 0001019432-25-000022 | Aug 7, 2025 | — |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-070938 | Jul 25, 2025 | Jul 16, 2025 |
| 3 | OWNERSHIP DOCUMENT | 0001104659-25-070937 | Jul 25, 2025 | Jul 16, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-069051 | Jul 18, 2025 | Jul 16, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-069048 | Jul 18, 2025 | Jul 16, 2025 |
| 3 | OWNERSHIP DOCUMENT | 0001104659-25-069047 | Jul 18, 2025 | Jul 16, 2025 |
| 8-K | FORM 8-K | 0001171843-25-004508 | Jul 17, 2025 | Jul 16, 2025 |
| SCHEDULE 13G/A | — | 0002052113-25-003189 | Jul 17, 2025 | — |
| 8-K/A | FORM 8K/A | 0001171843-25-004196 | Jun 27, 2025 | Jun 18, 2025 |
| 8-K | FORM 8-K | 0001171843-25-004036 | Jun 23, 2025 | Jun 18, 2025 |
| 8-K | FORM 8-K | 0001171843-25-003882 | Jun 13, 2025 | Jun 10, 2025 |
| 3 | OWNERSHIP DOCUMENT | 0001104659-25-057943 | Jun 9, 2025 | Jun 2, 2025 |
| 8-K | FORM 8-K | 0001171843-25-003574 | Jun 2, 2025 | May 30, 2025 |