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ICCC · NASDAQ · Biotechnology

ImmuCell (ICCC)

Makes First Defense antibody products to prevent scours in newborn dairy and beef calves.

$9.99
After hours+0.06 (+0.60%)
At close$9.93(−1.97%)

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13F · 13D/G · Form 4

Institutions14.68%1.33M shares
31 holders · as of Jun 30, 2026
Insiders20.06%1.82M shares
7 holders · as of Jun 22, 2026
Other65.26%5.93M shares
remainder

9.08M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

13F · 13D/G · Form 4

HolderStakeSharesDate
Ejnar A. Knudsen IIIInsider
9.17%832,790filed Nov 20, 2025
Norman H. Pessin1Insider
7.75%703,636filed Apr 16, 2021
Vanguard Capital Management LLCInstitution
2.95%268,130as of Jun 30, 2026
Morgan StanleyInstitution
2.58%233,910as of Jun 30, 2026
Michael F. BrighamInsiderdirector
2.26%205,700filed Mar 24, 2026
Renaissance Technologies LLCInstitution
1.88%171,089as of Jun 30, 2026
Cresset Asset Management, LLCInstitution
1.49%135,267as of Jun 30, 2026
Geode Capital Management, LLCInstitution
0.80%72,270as of Jun 30, 2026
Dimensional Fund Advisors LPInstitution
0.64%58,452as of Jun 30, 2026
David Scott TomscheInsiderdirector
0.63%57,460filed Nov 28, 2025
Bleichroeder LPInstitution
0.55%50,000as of Jun 30, 2026
Steadtrust LLCInstitution
0.50%45,370as of Jun 30, 2026
Mesirow Financial Investment Management, Inc.Institution
0.47%42,481as of Jun 30, 2026
Citadel Advisors LLCInstitution
0.45%40,503as of Jun 30, 2026
Vanguard Fiduciary Trust CoInstitution
0.42%37,766as of Jun 30, 2026
Strategic Financial Services, Inc,Institution
0.41%37,000as of Jun 30, 2026
Hightower Advisors, LLCInstitution
0.27%24,354as of Jun 30, 2026
BlackRock, Inc.Institution
0.25%22,860as of Jun 30, 2026
Boekhorst Paul Francis Olivier teInsiderdirector, officer: President and CEO
0.20%17,785filed Jun 22, 2026
Jane Street Group, LLCInstitution
0.17%15,751as of Jun 30, 2026
Quadrature Capital LtdInstitution
0.17%15,415as of Jun 30, 2026
Northern Trust CorpInstitution
0.16%14,721as of Jun 30, 2026
Mercer Global Advisors Inc /AdvInstitution
0.13%12,000as of Jun 30, 2026
Bailard, Inc.Institution
0.11%10,102as of Jun 30, 2026
Militia Capital Management LLCInstitution
0.11%10,000as of Jun 30, 2026
  1. Norman H. Pessin's transaction reports restate only vehicles that traded; the 2021 ownership statement (703.6K) is used instead.

13F, as of Jun 30, 2026

31 holders · 1.33M shares · 7 new positions · 14 increased · 7 reduced · 3 closed

HolderShares% outstandingChg q/qFiled
Vanguard Capital Management LLC268.1K2.95%+7.8KAug 13, 2026
Morgan Stanley233.9K2.58%+12.2KAug 13, 2026
Renaissance Technologies LLC171.1K1.88%+19.3KAug 13, 2026
Cresset Asset Management, LLC135.3K1.49%0Aug 14, 2026
Geode Capital Management, LLC72.3K0.80%+6.5KAug 12, 2026
Dimensional Fund Advisors LP58.5K0.64%+2.4KAug 11, 2026
Bleichroeder LP50.0K0.55%−51.6KAug 13, 2026
Steadtrust LLC45.4K0.50%−9.0KJul 9, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Ejnar A. Knudsen III9.21%832.8K13DNov 20, 2025

Form 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Jun 18, 2026
Boekhorst Paul Francis Olivier tedirector, officer: President and CEO
Purchase8,000$9.5017,785
Dec 3, 2025
Boekhorst Paul Francis Olivier tedirector, officer: President and CEO
Purchase · 3 lots9,675$5.039,785
Dec 4, 2025
Boekhorst Paul Francis Olivier tedirector, officer: President and CEO
Purchase2,432$5.509,738
Dec 2, 2025
Boekhorst Paul Francis Olivier tedirector, officer: President and CEO
Purchase3,708$4.873,708
Nov 25, 2025
David Scott Tomschedirector
Purchase · 2 lots3,266$4.7657,460

House and Senate disclosures

Not reported.