SEC ownership of Cellectar Biosciences, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001279704.
- CIK
- 0001279704
- Symbol
- CLRB on Nasdaq
- Location
- Florham Park, NJ
- Parsed ownership evidence
- 13D/G, 13F, and 3/4/5
- Lead holder
- Stonepine Capital Management, LLC
- 13D/G signal
- Stonepine Capital Management, LLC
- Latest evidence date
- 07 May 2026
Ownership snapshot
Top shareholders of Cellectar Biosciences, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Stonepine Capital Management, LLC |
13D/G
|
9.9%
|
—
863,277 shares
|
$0 | 04 May 2026 |
| Rosalind Advisors, Inc. |
13D/G
|
5.5%
|
—
247,715 shares
|
$0 | 31 Dec 2025 |
| INTRACOASTAL CAPITAL, LLC |
13D/G
Mitchell P. Kopin
|
5%
|
—
140,101 shares
|
$0 | 01 Jul 2025 |
| Orin Hirschman |
13D/G
|
4.9%
|
$586,444
2,022,221 shares
|
$0 | 31 Dec 2024 |
| Hexstone Capital LLC |
13D/G
|
4.9%
|
$553,293
216,130 shares
|
+$169,293 | 31 Dec 2025 |
| Bleichroeder LP |
13D/G
13F
Company
|
4.6%
|
$760,000
200,000 shares
|
$0 | 31 Dec 2025 |
| Laurence W. Lytton |
13D/G
LYTTON LAURENCE W
|
1.6%
|
$250,788
51,391 shares
|
$0 | 30 Jun 2025 |
| ADAR1 Capital Management, LLC |
13D/G
|
0.1%
|
—
2,962 shares
|
$0 | 30 Jun 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$49,265.
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 17,360 | 0 | $49,997 | $0 | +$49,997 |
| 3-6 | 0 | 198 | $0 | $732 | -$732 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Current reporting-owner rows connected to Cellectar Biosciences, Inc.. Open the relationship link for the CIK-to-CIK filing trail.
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Jarrod D. Longcor | Chief Operating Officer | $58,898 | +$24,998 | +74% | Filing P/S | 07 May 2026 |
| James V Caruso | Chief Executive Officer, Director | $58,515 | +$24,998 | +75% | Filing P/S | 07 May 2026 |
| Andrei Shustov | Senior Vice President, Medical | $15,411 | Mixed | 14 Jun 2024 | ||
| Darrell Shane Lea | Chief Commercial Officer | $11,088 | Mixed | 14 Jun 2024 | ||
| Chad J. Kolean | Chief Financial Officer | $2,823 | Mixed | 02 Jul 2025 | ||
| John Neis | Director | $36 | -$732 | -95% | Filing P/S | 12 Dec 2025 |
| Stefan Loren | Director | Mixed | 14 Feb 2025 | |||
| Douglas J. Swirsky | Director | Mixed | 14 Feb 2025 | |||
| Asher Chanan-Khan | Director | Mixed | 14 Feb 2025 | |||
| Frederick W. Driscoll | Director | Mixed | 14 Feb 2025 | |||
| Dov Elefant | Chief Financial Officer | Mixed | 25 Jan 2022 |
Recent Insider Transactions by Companies or Individuals for Cellectar Biosciences, Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Reported value | Reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Jarrod D. Longcor | CLRB | Common Stock | Purchase | 73.7% | $24,998 | $2.88 | 8,680 | 20,451 | 07 May 2026 | Direct |
| Jarrod D. Longcor | CLRB | Warrants | Purchase | 257.6% | 26,040 | 36,149 | 07 May 2026 | Direct | ||
| James V Caruso | CLRB | Common Stock | Purchase | 74.6% | $24,998 | $2.88 | 8,680 | 20,318 | 07 May 2026 | Direct |
| James V Caruso | CLRB | Warrants | Purchase | 259.5% | 26,040 | 36,076 | 07 May 2026 | Direct | ||
| John Neis | CLRB | Common Stock | Sale | -95.2% | $732 | $3.70 | -198 | 10 | 12 Dec 2025 | See Footnote |
| James V Caruso | CLRB | Common Stock | Purchase | 610.5% | 10,000 | 11,638 | 02 Jul 2025 | Direct | ||
| James V Caruso | CLRB | Warrants | Purchase | 10,000 | 10,000 | 02 Jul 2025 | Direct | |||
| Jarrod D. Longcor | CLRB | Common Stock | Purchase | 361.3% | 10,000 | 12,768 | 02 Jul 2025 | Direct | ||
| Jarrod D. Longcor | CLRB | Warrants | Purchase | 10,000 | 10,000 | 02 Jul 2025 | Direct | |||
| Chad J. Kolean | CLRB | Common Stock | Purchase | 352.6% | 5,000 | 6,418 | 02 Jul 2025 | Direct | ||
| Chad J. Kolean | CLRB | Warrants | Purchase | 5,000 | 5,000 | 02 Jul 2025 | Direct |