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CLRB · NASDAQ · Biotechnology

Cellectar Biosciences

Develops targeted radiotherapeutics for cancer through a phospholipid drug conjugate platform.

$2.60
After-hours close+0.09 (+3.39%)
At close$2.51(−0.99%)

Breakdown13F · Form 4

Institutions 3.89%310.7K sharesInsiders 0.59%47.2K sharesOther 95.52%7.63M shares

Shares outstanding 7.99M · Float 7.50M · 93.8% free float

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
Empery Asset Management, LP864.1K9.99%13GAug 4, 2026
Stonepine Capital Management, LLC863.3K9.90%13GMay 11, 2026
SilverArc Capital Management, LLC851.3K9.99%13GAug 14, 2026
StemPoint Capital LP845.7K9.90%13GAug 14, 2026
Bleichroeder LP808.3K9.99%13GAug 13, 2026

Institutions13F, as of Mar 31, 2026

19 holders · 310.7K shares · 4 new positions · 6 increased · 3 reduced · 5 closed

HolderShares% outstandingChg q/qFiled
Bleichroeder LP100.0K1.25%0May 14, 2026
Vanguard Capital Management LLC81.9K1.02%+81.9KnewMay 15, 2026
Geode Capital Management, LLC52.8K0.66%+24.1KMay 15, 2026
Sequoia Financial Advisors, LLC18.9K0.24%−6.5KApr 30, 2026
Vanguard Fiduciary Trust Co16.6K0.21%+16.6KnewMay 8, 2026
Warberg Asset Management LLC13.9K0.17%0May 7, 2026
Riverview Capital Advisers, LLC10.4K0.13%0May 14, 2026
UBS Group AG9.6K0.12%+7.0KMay 5, 2026

Beneficial owners13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Balyasny Asset Management L.P.9.99%798.4K13GAug 14, 2026
SilverArc Capital Management, LLC9.99%851.3K13GAug 14, 2026
Bleichroeder LP9.99%808.3K13GAug 13, 2026
Empery Asset Management, LP9.99%864.1K13GAug 4, 2026
Janus Henderson Group PLC9.99%798.4K13GJun 5, 2026
StemPoint Capital LP9.90%845.7K13GAug 14, 2026
Stonepine Capital Management, LLC9.90%863.3K13GMay 11, 2026
Lytton Laurence W8.80%13GFeb 13, 2025
Caligan Partners LP5.90%470.0K13GAug 14, 2026
Nantahala Capital Management, LLC5.73%13GFeb 14, 2025

InsidersForm 4

InsiderRoleShares% outstandingFiled
Jarrod Longcorofficer: Chief Operating Officer20.5K0.26%May 11, 2026
James V. Carusodirector, officer: Chief Executive Officer20.3K0.25%May 11, 2026
Chad J. Koleanofficer: Chief Financial Officer6.4K0.08%Jul 3, 2025
John Neisdirector100.00%Dec 16, 2025

4 ten-percent owners hold 306 shares by Form 4, outside the officers-and-directors figure above · 11 people have not refiled in the last 18 months (3.5K shares), so they are not in the figure above

Latest trades

DateInsiderTypeSharesAvg priceOwned after
May 7, 2026
James V. Carusodirector, officer: Chief Executive Officer
Purchase · 2 lots34,720$2.8856,394
May 7, 2026
Jarrod Longcorofficer: Chief Operating Officer
Purchase · 2 lots34,720$2.8856,600
Dec 12, 2025
John Neisdirector
Sale198$3.7010

CongressHouse and Senate disclosures

Not reported.