Vault-13

CELLECTAR BIOSCIENCES INC CLRB

COM NEW · Common Stock · CUSIP 15117F880

29 institutional holders +10 vs Q1 2026
3,479,6193.5m shares reported held*
36.8% of all shares outstanding*
$9.7mreported value*
13 new 6 added 2 reduced 4 sold out net bought ≈ $8.0m (+2.9m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 9.5m as of 2026-08-11, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $2.79.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0102030Q2 25: 20Q3 25: 21Q4 25: 20Q1 26: 19Q2 26: 2929Q2 25Q3 25Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q2 202520
Q3 202521
Q4 202520
Q1 202619
Q2 202629

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
20020Q3 25: 13 bought or addedQ3 25: 7 cut or sold outQ3 25Q4 25: 11 bought or addedQ4 25: 6 cut or sold outQ4 25Q1 26: 3 bought or addedQ1 26: 7 cut or sold outQ1 26Q2 26: 19 bought or addedQ2 26: 6 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 2025137
Q4 2025116
Q1 202637
Q2 2026196

Biggest buyers

Caligan Partners LP New +469,998+470.0k
Nantahala Capital Management, LLC New +439,996+440.0k
STEMPOINT CAPITAL LP New +354,938+354.9k
SILVERARC CAPITAL MANAGEMENT, LLC New +321,728+321.7k
VANGUARD CAPITAL MANAGEMENT LLC Added +245,483+245.5k
Balyasny Asset Management L.P. New +220,000+220.0k
Empery Asset Management, LP New +189,605+189.6k
Bleichroeder LP Added +188,679+188.7k
DIADEMA PARTNERS LP New +138,341+138.3k
Stonepine Capital Management, LLC New +104,550+104.5k

Biggest sellers

Warberg Asset Management LLC Sold out -13,900-13.9k
UBS Group AG Reduced -6,554-6.6k
Tower Research Capital LLC (TRC) Sold out -793-793
Vanguard Global Advisers, LLC Sold out -563-563
FMR LLC Sold out -10-10
BlackRock, Inc. Reduced -10-10

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
BALYASNY ASSET MANAGEMENT L.P. 13G · institution new · filed 2026-08-14 10.0% new 798.4k≈ $2.2m 2026-08-14
SILVERARC CAPITAL MANAGEMENT, LLC 13G · institution new · filed 2026-08-14 10.0% new 851.3k≈ $2.4m 2026-08-14
Bleichroeder LP 13G · institution +5.4 pts · filed 2026-08-13 10.0% +5.4 pts 808.3k≈ $2.2m 2026-08-13
Empery Asset Management, LP 13G · institution new · filed 2026-08-04 10.0% new 864.1k≈ $2.4m 2026-08-04
JANUS HENDERSON GROUP PLC 13G · institution new · filed 2026-06-05 10.0% new 798.4k≈ $2.2m 2026-06-05
STEMPOINT CAPITAL LP 13G · institution new · filed 2026-08-14 9.9% new 845.7k≈ $2.4m 2026-08-14
Stonepine Capital Management, LLC 13G · passive investor new · filed 2026-05-11 9.9% new 863.3k≈ $2.4m 2026-05-11
Caligan Partners LP 13G · institution new · filed 2026-08-14 5.9% new 470.0k≈ $1.3m 2026-08-14

Fell to 5% or below in the last year: Hexstone Capital LLC (4.9%, 2026-02-04)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 1 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 3 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 1 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26Q2 26: 2 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20251—0——
Q2 20250—0——
Q3 20253$74.8k0——
Q4 20250—1$733—
Q1 20260—0——
Q2 20262$25.0k0——
Q3 20260—0——
DateInsiderTradeSharesPrice ValueTheir holding
2026-05-07 CARUSO JAMES V Chief Executive Officer, director Bought 8,680 $2.88 $25.0k8.7k shares +75%
2026-05-07 Longcor Jarrod Chief Operating Officer Bought 8,680 $2.88 $25.0k8.7k shares +74%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Caligan Partners LP 0.06% of their portfolio NEW YORK, NY 469,998470.0k $1.3m $1.3m 0.06% New
2 Nantahala Capital Management, LLC 0.04% of their portfolio NEW CANAAN, CT 439,996440.0k $1.2m $1.2m 0.04% New
3 STEMPOINT CAPITAL LP 0.17% of their portfolio NEW YORK, NY 354,938354.9k $986.7k $986.7k 0.17% New
4 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 327,367327.4k $910.1k $910.1k 0.00% Added +245.5k +245,483
5 SILVERARC CAPITAL MANAGEMENT, LLC 0.10% of their portfolio BOSTON, MA 321,728321.7k $894.4k $894.4k 0.10% New
6 Bleichroeder LP 0.14% of their portfolio NEW YORK, NY 288,679288.7k $802.5k $802.5k 0.14% Added +188.7k +188,679
7 Jupiter Topco LLC 0.00% of their portfolio NEW YORK, NY 274,156274.2k $759.4k $759.4k 0.00% First filing
8 Balyasny Asset Management L.P. 0.00% of their portfolio Chicago, IL 220,000220.0k $611.6k $611.6k 0.00% New
9 Empery Asset Management, LP 0.61% of their portfolio NEW YORK, NY 189,605189.6k $527.1k $527.1k 0.61% New
10 DIADEMA PARTNERS LP 0.14% of their portfolio MORRISTOWN, NJ 138,341138.3k $384.6k $384.6k 0.14% New
11 Stonepine Capital Management, LLC 0.22% of their portfolio Bend, OR 104,550104.5k $290.6k $290.6k 0.22% New
12 Persistent Asset Partners Ltd 0.08% of their portfolio HONG KONG, K3 92,98393.0k $258.5k $258.5k 0.08% New
13 BOOTHBAY FUND MANAGEMENT, LLC 0.00% of their portfolio NEW YORK, NY 85,06985.1k $236.5k $236.5k 0.00% New
14 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 53,35153.4k $148.3k $148.3k 0.00% Added +573 +573
15 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 46,22046.2k $128.5k $128.5k 0.00% Added +29.6k +29,647
16 Sequoia Financial Advisors, LLC 0.00% of their portfolio Akron, OH 21,85021.9k $60.7k $60.7k 0.00% Added +3.0k +3,000
17 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 16,57716.6k $46.0k $46.0k 0.00% New
18 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 14,83914.8k $41.3k $41.3k 0.00% New
19 Riverview Capital Advisers, LLC 0.01% of their portfolio BOSTON, MA 10,38410.4k $50.1k $50.1k 0.01% Unchanged
20 BlackRock, Inc. 0.00% of their portfolio New York, NY 4,7354.7k $13.2k $13.2k 0.00% Reduced -10 -10
21 UBS Group AG 0.00% of their portfolio ZURICH, V8 3,0933.1k $8.6k $8.6k 0.00% Reduced -6.6k -6,554
22 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 561561 $1.6k $1.6k 0.00% New
23 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 510510 $1.4k $1.4k 0.00% Unchanged
24 TD Waterhouse Canada Inc. 0.00% of their portfolio TORONTO, A6 6363 $178 $178 0.00% Unchanged
25 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 1111 $31 $31 0.00% Unchanged
26 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 77 $18 $18 0.00% Added +6 +6
27 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 33 $8 $8 0.00% Unchanged
28 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 33 $8 $8 0.00% Unchanged
29 DANSKE BANK A/S 0.00% of their portfolio COPENHAGEN V, G7 22 $6 $6 0.00% Unchanged