Security Snapshot

HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share (HBIO) Institutional Ownership

CUSIP: 416906105

13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026

Latest Period

Q4 2025

Institutions Reporting

61

Shares (Excl. Options)

17,459,075

Price

$0.67

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Type / Class
Equity / Common Stock, par value $0.01 per share
Symbol
HBIO on Nasdaq
Shares outstanding
5,297,433
Price per share
$0.60
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
17,459,075
Total reported value
$11,675,566
% of total 13F portfolios
0%
Share change
+1,084,331
Value change
+$1,458,758
Number of holders
61
Price from insider filings
$0.60
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Quick Takeaways

  • HBIO - HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share is tracked under CUSIP 416906105.
  • 61 institutions reported positions in Q4 2025.
  • 6 significant owners is listed from Schedule 13D/13G reporting.

What Changed

  • Holder count moved from 61 to 0 between Q4 2025 and Q1 2026.
  • Reported value moved from $11,675,566 to $0.

Why This Matters

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Source Evidence

Source: SEC Form 13F

Latest holder context comes from 61 institutions filings for Q4 2025.

Open SEC Evidence

Investment Quick Answers

What is CUSIP 416906105?
CUSIP 416906105 identifies HBIO - HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share in SEC 13F datasets.

Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.

Significant Owners of HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share (HBIO) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Leviticus Partners LP 7.6% +1.2% $2,006,945 +$30,445 3,401,601 +1.5% Leviticus Partners LP 31 Dec 2025
WEBER CAPITAL MANAGEMENT LLC /ADV 7.3% +25% $1,216,144 +$259,711 3,200,380 +27% Weber Capital Management, LLC 31 Mar 2025
Harvey Partners, LLC 5% $831,250 2,187,500 HARVEY PARTNERS, LLC 31 Mar 2025
BlackRock, Inc. 2.5% $494,360 1,113,926 BlackRock, Inc. 30 Jun 2025
Snider William 16% $507,600 846,000 William Snider 17 Dec 2025
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. 0.1% $9,723 25,586 Punch & Associates Investment Management, Inc. 31 Mar 2025

As of 31 Dec 2025, 61 institutional investors reported holding 17,459,075 shares of HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share (HBIO). This represents 330% of the company’s total 5,297,433 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share (HBIO) together control 318% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
WEBER CAPITAL MANAGEMENT LLC /ADV 60% 3,200,380 0% 2% $2,140,413
VANGUARD GROUP INC 36% 1,923,275 +3.9% 0% $1,286,671
ACADIAN ASSET MANAGEMENT LLC 33% 1,772,627 +66% 0% $1,184,000
Meros Investment Management, LP 23% 1,217,628 +33% 0.32% $814,365
CORSAIR CAPITAL MANAGEMENT, L.P. 21% 1,108,692 +1009% 0.12% $741,493
RENAISSANCE TECHNOLOGIES LLC 19% 1,021,241 +18% 0% $683,006
TWO SIGMA INVESTMENTS, LP 19% 1,012,417 +114% 0% $677,104
TWO SIGMA ADVISERS, LP 17% 878,556 +261% 0% $587,578
BlackRock, Inc. 12% 622,296 +0.15% 0% $416,191
NANO CAP NEW MILLENNIUM GROWTH FUND L P 11% 600,000 0% 0.34% $401,280
MILLENNIUM MANAGEMENT LLC 10% 546,067 -4.5% 0% $365,210
GEODE CAPITAL MANAGEMENT, LLC 8.7% 460,793 +4.3% 0% $308,248
JANE STREET GROUP, LLC 7.8% 415,159 +923% 0% $277,658
Portolan Capital Management, LLC 7.7% 409,650 0.01% $273,974
Williams & Novak, LLC 6.6% 348,800 +27% 0.18% $233,277
CITIGROUP INC 3.7% 193,828 +12753% 0% $129,632
ESSEX INVESTMENT MANAGEMENT CO LLC 3.5% 184,678 0.02% $123,513
RBF Capital, LLC 3% 160,000 0% 0% $107,008
STATE STREET CORP 2.8% 149,352 0% 0% $99,887
SUSQUEHANNA INTERNATIONAL GROUP, LLP 2.6% 139,869 +66% 0% $93,544
Assenagon Asset Management S.A. 2.6% 139,218 -0% 0% $93,109
Bank of New York Mellon Corp 2.4% 126,223 0% 0% $84,418
NORTHERN TRUST CORP 1.7% 91,973 -37% 0% $61,512
Virtu Financial LLC 1.1% 59,508 0% $40,000
GAMCO INVESTORS, INC. ET AL 1.1% 57,000 0% $38,122

Institutional Holders of HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share (HBIO) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q1 0 $0 -$2,553,702 $0.60 0
2025 Q4 17,459,075 $11,675,566 +$1,458,758 $0.67 61
2025 Q3 16,625,345 $7,288,735 -$1,003,804 $0.44 57
2025 Q2 18,909,639 $8,390,056 -$3,556,213 $0.44 63
2025 Q1 25,639,859 $14,511,169 -$7,423,093 $0.57 88
2024 Q4 31,032,063 $65,474,380 -$507,785 $2.11 93
2024 Q3 31,286,654 $84,158,061 -$1,622,981 $2.69 93
2024 Q2 31,809,122 $90,667,261 -$2,740,786 $2.85 99
2024 Q1 32,508,336 $137,826,878 -$2,306,921 $4.24 88
2023 Q4 32,980,445 $176,434,839 +$310,243 $5.35 92
2023 Q3 32,933,859 $141,614,610 +$1,242,108 $4.30 94
2023 Q2 32,464,182 $178,189,764 +$13,240,245 $5.49 100
2023 Q1 30,035,680 $126,147,516 +$3,043,680 $4.20 62
2022 Q4 30,067,615 $83,291,237 +$3,382,432 $2.77 65
2022 Q3 28,887,479 $73,956,704 -$2,652,950 $2.56 70
2022 Q2 29,663,685 $106,795,432 -$4,430,704 $3.60 85
2022 Q1 30,173,164 $187,326,326 +$564,474 $6.21 96
2021 Q4 30,000,430 $211,439,723 +$3,365,953 $7.05 103
2021 Q3 27,456,300 $191,708,869 -$3,337,860 $6.98 99
2021 Q2 28,210,200 $235,003,696 +$16,394,470 $8.33 100
2021 Q1 26,392,961 $144,144,083 +$3,192,139 $5.46 85
2020 Q4 25,861,339 $110,939,345 -$1,933,801 $4.29 80
2020 Q3 26,370,564 $79,376,316 -$642,285 $3.01 83
2020 Q2 26,562,238 $82,344,380 +$19,093,143 $3.10 85
2020 Q1 20,625,098 $45,584,150 -$722,150 $2.21 57
2019 Q4 24,009,679 $73,228,251 -$3,515,938 $3.05 66
2019 Q3 24,418,026 $74,726,029 +$2,962,592 $3.07 67
2019 Q2 24,369,589 $48,741,264 -$10,349,986 $2.00 74
2019 Q1 28,175,415 $121,437,171 +$3,126,989 $4.31 86
2018 Q4 27,463,580 $87,327,663 -$3,132,332 $3.18 80
2018 Q3 27,647,034 $145,130,863 +$5,351,562 $5.25 91
2018 Q2 26,718,931 $142,931,687 +$18,631,261 $5.35 78
2018 Q1 23,265,668 $116,331,747 +$7,348,201 $5.00 72
2017 Q4 22,178,790 $73,788,138 +$2,111,548 $3.30 56
2017 Q3 21,530,444 $80,742,659 +$1,716,890 $3.75 53
2017 Q2 21,260,203 $54,216,157 -$518,829 $2.55 58
2017 Q1 21,452,694 $55,780,964 +$3,276,678 $2.60 60
2016 Q4 21,648,942 $66,025,006 -$2,126,006 $3.05 67
2016 Q3 22,270,597 $60,573,005 -$1,457,071 $2.72 68
2016 Q2 22,752,059 $65,070,006 -$3,786,962 $2.86 82
2016 Q1 24,030,952 $72,564,503 +$913,681 $3.02 80
2015 Q4 23,717,161 $82,298,691 +$1,213,902 $3.47 80
2015 Q3 23,240,712 $87,849,146 +$1,502,146 $3.78 82
2015 Q2 22,663,513 $129,178,600 +$15,699,612 $5.70 84
2015 Q1 19,895,053 $115,696,000 +$4,343,742 $5.82 77
2014 Q4 19,181,575 $108,691,144 +$6,178,606 $5.67 76
2014 Q3 18,114,180 $74,082,911 +$1,290,910 $4.09 69
2014 Q2 17,704,528 $80,549,720 +$2,968,664 $4.55 71
2014 Q1 17,896,425 $84,784,945 +$5,332,028 $4.74 72
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