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
$0.59
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
-$1,003,384
Number of holders
57
Price from insider filings
$0.59
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% $1,472,175 +$314,387 3,200,380 +27% Weber Capital Management, LLC 31 Mar 2025
Harvey Partners, LLC 5% $1,006,250 2,187,500 HARVEY PARTNERS, LLC 31 Mar 2025
BlackRock, Inc. 2.5% $412,153 1,113,926 BlackRock, Inc. 30 Jun 2025
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. 0.1% $11,770 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 8,905,686 $5,955,048 +$298,587 $0.67 23
2025 Q3 16,625,345 $7,288,735 -$1,003,384 $0.44 57
2025 Q2 18,909,639 $8,390,056 -$3,556,233 $0.44 63
2025 Q1 25,639,859 $14,511,636 -$7,423,072 $0.57 88
2024 Q4 31,033,281 $65,478,119 -$504,518 $2.11 94
2024 Q3 31,286,654 $84,157,756 -$1,622,980 $2.69 93
2024 Q2 31,809,122 $90,667,261 -$2,740,784 $2.85 99
2024 Q1 32,508,036 $137,825,674 -$2,069,400 $4.24 87
2023 Q4 17,166 $91,838 $5.35 1
2023 Q3 32,933,559 $141,613,223 +$1,243,104 $4.30 93
2023 Q2 32,463,582 $178,186,821 +$12,586,785 $5.49 98
2023 Q1 30,035,380 $126,146,571 +$3,345,630 $4.20 61
2022 Q4 30,067,115 $83,289,900 +$3,026,291 $2.77 64
2022 Q3 28,886,979 $73,955,704 -$2,610,330 $2.56 69
2022 Q2 29,662,781 $106,749,475 -$4,379,664 $3.60 84
2022 Q1 30,147,531 $187,167,326 +$513,396 $6.21 95
2021 Q4 29,478,109 $207,757,723 +$3,376,858 $7.05 100
2021 Q3 27,428,747 $191,515,869 -$3,076,876 $6.98 97
2021 Q2 28,186,736 $234,808,696 +$16,433,326 $8.33 98
2021 Q1 26,388,756 $144,123,083 +$3,183,662 $5.46 85
2020 Q4 25,861,039 $110,938,345 -$1,858,681 $4.29 79
2020 Q3 24,344,663 $73,278,316 -$279,151 $3.01 82
2020 Q2 24,408,139 $75,666,380 +$18,659,806 $3.10 83
2020 Q1 20,608,660 $45,547,062 -$711,291 $2.21 55
2019 Q4 23,992,773 $73,177,085 -$3,517,981 $3.05 64
2019 Q3 24,401,888 $74,676,386 +$2,962,620 $3.07 66
2019 Q2 24,353,451 $48,709,056 -$10,351,702 $2.00 73
2019 Q1 27,584,134 $118,887,614 +$1,528,886 $4.31 81
2018 Q4 27,418,268 $87,184,272 -$2,967,365 $3.18 77
2018 Q3 27,598,387 $144,876,032 +$5,298,513 $5.25 87
2018 Q2 26,680,381 $142,726,211 +$18,629,891 $5.35 76
2018 Q1 23,249,530 $116,251,010 +$7,348,216 $5.00 71
2017 Q4 22,162,652 $73,735,007 +$2,111,527 $3.30 55
2017 Q3 21,514,306 $80,682,008 +$1,820,538 $3.75 52
2017 Q2 21,210,496 $54,089,005 -$546,642 $2.55 56
2017 Q1 21,414,148 $55,680,005 +$3,397,854 $2.60 57
2016 Q4 21,648,942 $66,025,006 -$2,127,791 $3.05 67
2016 Q3 22,250,194 $60,518,005 -$1,427,717 $2.72 67
2016 Q2 22,752,059 $65,070,006 -$3,786,982 $2.86 82
2016 Q1 24,030,952 $72,564,503 +$947,086 $3.02 80
2015 Q4 23,688,785 $82,199,691 +$1,218,281 $3.47 77
2015 Q3 23,234,543 $87,826,146 +$877,122 $3.78 81
2015 Q2 22,569,340 $128,641,600 +$15,552,769 $5.70 83
2015 Q1 19,893,303 $115,686,000 +$4,344,876 $5.82 76
2014 Q4 19,181,575 $108,691,144 +$6,178,603 $5.67 76
2014 Q3 18,114,180 $74,082,911 +$1,290,914 $4.09 70
2014 Q2 17,704,528 $80,549,720 +$2,968,699 $4.55 72
2014 Q1 17,896,425 $84,784,945 +$5,329,777 $4.74 72