Harvard Bioscience, Inc. (HBIO) ownership: Top institutional holder: WEBER CAPITAL MANAGEMENT LLC /ADV ($1.56M). Insider activity: Net Seller (5 buys, 15 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| WEBER CAPITAL MANAGEMENT LLC /ADV | 320037.00 | $1.56M | 2026-03-31 |
| VANGUARD GROUP INC | 1923275.00 | $1.29M | 2025-12-31 |
| ACADIAN ASSET MANAGEMENT LLC | 179614.00 | $873000.00 | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 163313.00 | $795334.00 | 2026-03-31 |
| CORSAIR CAPITAL MANAGEMENT, L.P. | 124810.00 | $607825.00 | 2026-03-31 |
| TWO SIGMA ADVISERS, LP | 878556.00 | $587578.00 | 2025-12-31 |
| Meros Investment Management, LP | 118522.00 | $577205.00 | 2026-03-31 |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P | 117500.00 | $572225.00 | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-09 | |
| Sell | null | 2026-06-09 | |
| Sell | null | 2026-06-09 | |
| Sell | null | 2026-06-09 | |
| Sell | null | 2026-06-09 | |
| Sell | null | 2026-03-20 | |
| Sell | null | 2026-03-20 | |
| Sell | null | 2026-03-20 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.