HARVARD BIOSCIENCE INC - Common Stock (HBIO) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
HBIO on Nasdaq
Shares outstanding
44,666,667
Price per share
$0.67
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
16,625,345
Total reported value
$7,288,735
% of total 13F portfolios
0%
Share change
-2,283,221
Value change
-$1,003,409
Number of holders
57
Price from insider filings
$0.67
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of HARVARD BIOSCIENCE INC - Common Stock (HBIO) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Leviticus Partners LP 7.5% -19% $1,468,975 -$305,869 3,350,000 -17% Leviticus Partners LP 30 Oct 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
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. 0.1% $9,723 25,586 Punch & Associates Investment Management, Inc. 31 Mar 2025

As of 30 Sep 2025, 57 institutional investors reported holding 16,625,345 shares of HARVARD BIOSCIENCE INC - Common Stock (HBIO). This represents 37% of the company’s total 44,666,667 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of HARVARD BIOSCIENCE INC - Common Stock (HBIO) together control 36% 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
AMH Equity Ltd 9.1% 4,047,535 +15% 2.2% $1,774,844
Harvey Partners, LLC 4.6% 2,050,000 -4.3% 0.08% $898,925
VANGUARD GROUP INC 4.1% 1,851,846 -0.11% 0% $812,960
ACADIAN ASSET MANAGEMENT LLC 2.4% 1,069,690 +2.9% 0% $467,000
Meros Investment Management, LP 2.1% 918,259 -0.18% 0.17% $402,696
RENAISSANCE TECHNOLOGIES LLC 1.9% 868,478 +9.7% 0% $380,828
BlackRock, Inc. 1.4% 621,367 -44% 0% $272,470
Granahan Investment Management, LLC 1.4% 603,519 -60% 0.01% $264,643
MILLENNIUM MANAGEMENT LLC 1.3% 571,703 -11% 0% $250,692
DIMENSIONAL FUND ADVISORS LP 1.1% 496,144 -56% 0% $217,559
Acuitas Investments, LLC 1.1% 491,092 0% 0.14% $215,344
TWO SIGMA INVESTMENTS, LP 1.1% 474,157 +140% 0% $207,918
GEODE CAPITAL MANAGEMENT, LLC 0.99% 441,870 +0.42% 0% $193,808
Williams & Novak, LLC 0.62% 275,500 +159% 0.09% $120,807
Pasadena Private Wealth, LLC 0.55% 243,911 0% 0.02% $106,955
TWO SIGMA ADVISERS, LP 0.54% 243,156 +419% 0% $106,624
RBF Capital, LLC 0.36% 160,000 0% 0% $70,160
STATE STREET CORP 0.33% 149,352 0% 0% $65,491
NORTHERN TRUST CORP 0.33% 145,173 -23% 0% $63,658
Assenagon Asset Management S.A. 0.31% 139,220 +278% 0% $61,048
Bank of New York Mellon Corp 0.28% 126,223 0% 0% $55,349
CORSAIR CAPITAL MANAGEMENT, L.P. 0.22% 100,000 0.01% $43,850
SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.19% 84,349 -40% 0% $36,987
FMR LLC 0.1% 45,593 -37% 0% $19,993
JANE STREET GROUP, LLC 0.09% 40,564 -43% 0% $17,786

Institutional Holders of HARVARD BIOSCIENCE INC - Common Stock (HBIO) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 156,290 $104,527 -$1,646 $0.67 4
2025 Q3 16,625,345 $7,288,735 -$1,003,409 $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