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$HBIO
$8.42 +$0.07 (0.84%) Close

Ownership

13F as of Q2 2026 · 4.6M shares outstanding

Who owns HBIO?

By type of holder
Institutions 36.9% Insiders 13.8% Everyone else 49.3%
Concentration Top 10 holders own 71.8%
William Snider 18.6% · BroadOak Income Fund, L.P. 17.8%
Institutional ownership
36.9%
+2.1 pts vs last qtr
Institutional holders
37
0 vs last qtr
Net shares bought
+93.8K
by institutions in Q2 2026
New / sold out
4 / 4
positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026
  • Meros Investment Management, LP +64.5K
  • Mink Brook Asset Management LLC NEW +33.4K

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Biggest sellers in Q2 2026
  • Millennium Management LLC −13.7K
  • Geode Capital Management, LLC −12.0K

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Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Harvard Bioscience Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2016–FY2025
+29.8%
+2.94% a year
Each share's claim on the business
−22.9%
shrank without buying or selling a share
Spent on buybacks vs paid in stock
— vs $36.5M
over 10 fiscal years
Diluted shares, split-adjusted
3.3M3.9M4.5M2016: 3.4M shares'162017: 3.5M shares'172018: 3.6M shares'182019: 3.8M shares'192020: 3.9M shares'202021: 4.0M shares'212022: 4.1M shares'222023: 4.2M shares'232024: 4.4M shares'242025: 4.4M shares'25
Buybacks Stock-based comp
$0$2.5M$5.0M2016 buybacks: $02016 stock comp: $3.5M'162017 buybacks: $02017 stock comp: $3.5M'172018 buybacks: $02018 stock comp: $3.0M'182019 buybacks: $02019 stock comp: $3.0M'192020 buybacks: $02020 stock comp: $3.6M'202021 buybacks: $02021 stock comp: $4.2M'212022 buybacks: $02022 stock comp: $4.4M'222023 buybacks: $02023 stock comp: $5.0M'232024 buybacks: $02024 stock comp: $4.3M'242025 buybacks: $02025 stock comp: $1.9M'25

How patient are the owners?

Institutional shares by how long they've been held
5+ years44% 3–5 years11% 1–3 years5% Under 1 year39%
Quarterly turnover
7.3%
of institutional shares changed hands
Top 10 managers, median time held
5 years

Super Investors

Investment managers reporting HBIO on Form 13F
WC
Weber Capital Management LLC /adv
Shares
310.9K
% of company
6.83%
Change vs last qtr
−9.2K (−2.9%)
Held since
Q4 '25
MI
Meros Investment Management, LP
Shares
183.0K
% of company
4.02%
Change vs last qtr
+64.5K (+54.4%)
Held since
2021

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Institutional Funds

Mutual funds and ETFs reporting HBIO on Form N-PORT; together they hold 5.1% of the company
VT
Vanguard Total Stock Market Index Fund
Vanguard Index Funds
Position value
$759K
% of company
2.71%
% of the fund
0.00%
As of
June 30, 2026
VE
Vanguard Extended Market Index Fund
Vanguard Index Funds
Position value
$259K
% of company
0.92%
% of the fund
0.00%
As of
June 30, 2026

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Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G
WS
William Snider
5%+ holder13D · 16.0%
Shares
846.0K
% of company
18.58%
Change vs last qtr
—
Held since
—
BI
BroadOak Income Fund, L.P.
5%+ holder13D · 15.3%
Shares
810.0K
% of company
17.79%
Change vs last qtr
—
Held since
—

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