Cellectar Biosciences
CLRB on Nasdaq. Market value $16m.
Should I look at this?
Look carefully before going further
Why it could be worth it
Nothing stands out yet.
What to watch out for
Read the warning sign in its own filings
This is not advice.
Who owns it
None of the long-term investors we follow own it. 29 funds in all.
Largest holders overall
- Caligan Partners LP$1mNew
- Nantahala Capital Management$1mNew
- Stempoint Capital LP$986,728New
- Vanguard Capital Management$910,080Added
- Silverarc Capital Management$894,404New
- Bleichroeder LP$802,528Added
- Jupiter Topco$759,412
- Balyasny Asset Management L.P.$611,600New
- Empery Asset Management, LP$527,102New
- Diadema Partners LP$384,588New
From 13F filings for the quarter ended 30 June 2026.
Big holders and activists
12 investors own more than 5%.
- BALYASNY ASSET MANAGEMENT L.P.Passive investorat least 10.0%(filed with 4 related holders)Since 30 June 2026
- SilverArc Capital Management, LLCPassive investorat least 10.0%(filed with 1 related holder)Since 30 June 2026
- Bleichroeder LPPassive investorat least 10.0%+5.4 pts(filed with 2 related holders)Since 30 June 2026
- Empery Asset Management, LPPassive investorat least 10.0%(filed with 1 related holder)Since 30 June 2026
- JANUS HENDERSON GROUP PLCPassive investor10.0%Since 29 May 2026
- StemPoint Capital LPPassive investorat least 9.9%(filed with 2 related holders)Since 30 June 2026
- Stonepine Capital Management, LLCPassive investorat least 9.9%(filed with 3 related holders)Since 4 May 2026
- Caligan Partners LPPassive investorat least 5.9%(filed with 1 related holder)Since 30 June 2026
- Rosalind Advisors, Inc.Passive investorat least 5.5%−4.4 pts(filed with 4 related holders)Since 31 December 2025
- Mitchell P. KopinPassive investorat least 5.0%(filed with 2 related holders)Since 1 July 2025
- Hexstone Capital LLCPassive investorat least 4.9%−0.7 pts(filed with 1 related holder)Since 31 December 2025
- Orin HirschmanPassive investorat least 4.9%(filed with 1 related holder)Since 31 December 2024
- LYTTON LAURENCE WPassive investorSold down below 5%Since 30 June 2025
- ADAR1 Capital Management, LLCPassive investorSold down below 5%Since 30 June 2025
- Nantahala Capital Management, LLCPassive investorSold down below 5%Since 30 June 2025
| Holder | Stake | Since | |
|---|---|---|---|
BALYASNY ASSET MANAGEMENT L.P. Passive investor | at least 10.0% (filed with 4 related holders) | 30 June 2026 | |
SilverArc Capital Management, LLC Passive investor | at least 10.0% (filed with 1 related holder) | 30 June 2026 | |
Bleichroeder LP Passive investor | at least 10.0%+5.4 pts (filed with 2 related holders) | 30 June 2026 | |
Empery Asset Management, LP Passive investor | at least 10.0% (filed with 1 related holder) | 30 June 2026 | |
JANUS HENDERSON GROUP PLC Passive investor | 10.0% | 29 May 2026 | |
StemPoint Capital LP Passive investor | at least 9.9% (filed with 2 related holders) | 30 June 2026 | |
Stonepine Capital Management, LLC Passive investor | at least 9.9% (filed with 3 related holders) | 4 May 2026 | |
Caligan Partners LP Passive investor | at least 5.9% (filed with 1 related holder) | 30 June 2026 | |
Rosalind Advisors, Inc. Passive investor | at least 5.5%−4.4 pts (filed with 4 related holders) | 31 December 2025 | |
Mitchell P. Kopin Passive investor | at least 5.0% (filed with 2 related holders) | 1 July 2025 | |
Hexstone Capital LLC Passive investor | at least 4.9%−0.7 pts (filed with 1 related holder) | 31 December 2025 | |
Orin Hirschman Passive investor | at least 4.9% (filed with 1 related holder) | 31 December 2024 | |
LYTTON LAURENCE W Passive investor | Sold down below 5% | 30 June 2025 | |
ADAR1 Capital Management, LLC Passive investor | Sold down below 5% | 30 June 2025 | |
Nantahala Capital Management, LLC Passive investor | Sold down below 5% | 30 June 2025 |
From Schedule 13D and 13G filings: anyone owning more than 5% must file one.
What insiders did
In the last 12 months, 2 insiders bought $49,997 of shares on the open market. 1 sold $733.
- Longcor JarrodChief Operating OfficerBought
- Date
- 7 May 2026
- Shares
- 8,680
- Price
- $2.88
- Value
- $24,998
- CARUSO JAMES VChief Executive Officer, DirectorBought
- Date
- 7 May 2026
- Shares
- 8,680
- Price
- $2.88
- Value
- $24,998
- NEIS JOHNDirectorSold
- Date
- 12 December 2025
- Shares
- 198
- Price
- $3.70
- Value
- $733
| Date | Who | Did | Shares | Price | Value |
|---|---|---|---|---|---|
| 7 May 2026 | Longcor Jarrod Chief Operating Officer | Bought | 8,680 | $2.88 | $24,998 |
| 7 May 2026 | CARUSO JAMES V Chief Executive Officer, Director | Bought | 8,680 | $2.88 | $24,998 |
| 12 December 2025 | NEIS JOHN Director | Sold | 198 | $3.70 | $733 |
From Form 4 filings: insiders must report trades in their own company's shares within two days.
Warning signs in its filings
Problems the company itself reported to the SEC, in its own words.
2 serious warning signs in Cellectar Biosciences’ filings.
We look for five warning signs: doubt it can keep going, weak checks on its own accounts, a notice that its past accounts can't be relied on, a change of auditor, and one customer bringing in a big share of sales. We don't check lawsuits, investigations or debt yet.
We checked the auditor's report, internal controls, restatement notices, auditor changes and big customers in the 10-K filed 4 Mar 2026, plus the 10-Q filed 13 Aug 2026 and 5 later 8-Ks.
Doubt it can keep going
SeriousThe company or its auditor warned it may not have enough money to last the next year.
“These uncertainties raise substantial doubt about the Company’s ability to continue as a going concern.”
Show the full paragraph
These uncertainties raise substantial doubt about the Company’s ability to continue as a going concern. The accompanying financial statements have been prepared on the basis that the Company will continue to operate as a going concern, which contemplates it will be able to realize assets and settle liabilities and commitments in the normal course of business for the foreseeable future. Accordingly, the accompanying consolidated financial statements do not include any adjustments that may result from the outcome of these uncertainties.
From the 10-Q filed 13 August 2026, Part I, Item 1. Financial Statements. Read it in the filing
Weak checks on its own accounts
SeriousThe company said its checks on its own accounts did not work at the end of its latest quarter. Mistakes could slip into the numbers.
“Based on that evaluation, management has concluded that as of the respective period, our disclosure controls and procedures were not effective due to the material weaknesses in internal control over financial reporting described below.”
Show the full paragraph
Under the supervision, and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of the effectiveness of our disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), in connection with the period ending June 30, 2026. Based on that evaluation, management has concluded that as of the respective period, our disclosure controls and procedures were not effective due to the material weaknesses in internal control over financial reporting described below.
From the 10-Q filed 13 August 2026, Part I, Item 4. Controls and Procedures. Read it in the filing
A 10-K is the yearly report every US company files with the SEC. An 8-K is a short notice of a big event.
The deep dive
Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.
- What the business is worth, as a range, and the margin of safety at today’s price
- Prices to start buying, buy, and buy hard
- The three things that would make this a mistake
- Every number footnoted to the filing it came from
Your first deep dive is free.
Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.