HBIO · Insider trading · 13F holders · Congress trades
Harvard Bioscience Inc (HBIO)
Who is buying and selling HBIO: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 3
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
HBIO at a glance
- No open-market insider purchases or sales of HBIO were filed in the last 90 days.
- 3 13F filers hold HBIO among their 50 largest positions, worth $3.7M combined. The biggest bets by portfolio weight are Weber Capital Management LLC /adv (2.2%), Meros Investment Management, LP (0.4%) and Mink Brook Asset Management LLC (0.1%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
- No member of Congress has disclosed a trade in HBIO.
HBIO insider trading
No open-market insider purchases or sales of HBIO were filed in the last 90 days.
Who owns HBIO? Hedge funds and superinvestors
3 13F filers hold HBIO among their 50 largest positions, worth $3.7M combined. The biggest bets by portfolio weight are Weber Capital Management LLC /adv (2.2%), Meros Investment Management, LP (0.4%) and Mink Brook Asset Management LLC (0.1%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Weber Capital Management LLC /advHedge fund | 2.2% | $2.4M | 299,816 | -3.6% shares | Q3 2026 |
| Meros Investment Management, LPInstitutional asset manager | 0.4% | $1.1M | 182,992 | +54.4% shares | Q2 2026 |
| Mink Brook Asset Management LLCHedge fund | 0.1% | $205K | 33,369 | — | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 2). Screen HBIO in the grand portfolio →
HBIO stock trades by members of Congress
No member of Congress has disclosed a trade in HBIO.
HBIO questions and answers
Are insiders buying HBIO stock?
No open-market insider purchases or sales of HBIO were filed in the last 90 days.
Which hedge funds own HBIO?
3 13F filers hold HBIO among their 50 largest positions, worth $3.7M combined. The biggest bets by portfolio weight are Weber Capital Management LLC /adv (2.2%), Meros Investment Management, LP (0.4%) and Mink Brook Asset Management LLC (0.1%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
Has Congress traded HBIO?
No member of Congress has disclosed a trade in HBIO.
Who is the largest holder of HBIO?
Among 13F filers, Weber Capital Management LLC /adv reports the largest HBIO position, $2.4M (299,816 shares) in its Q3 2026 13F. The biggest bet by portfolio weight is Weber Capital Management LLC /adv's: 2.2% of its portfolio.
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