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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1279704	Cellectar Biosciences Inc.	CLRB	Pharmaceutical Preparations (2834)	043321804

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1044321	M David Greenhouse & W Austin Marxe	C/O Special Situations Funds 527 Madison Avenue, Suite 2600 New York NY 10022		No	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2014-08-18	4,800	$3.05	1,070,800	No	4	P	Indirect	By Limited Partnerships
Common Stock	Acquisiton	2014-08-19	65,687	$3.05	1,136,487	No	4	P	Indirect	By Limited Partnerships
Common Stock	Acquisiton	2014-08-22	5,699	$3.00	1,142,186	No	4	P	Indirect	By Limited Partnerships

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	By Limited Partnerships
No	4	P	Indirect	By Limited Partnerships
No	4	P	Indirect	By Limited Partnerships

Footnotes

This is a joint filing by Austin W. Marxe (Marxe), David M. Greenhouse (Greenhouse) and Adam C. Stettner (Stettner). They share voting and investment control over all securities owned by Special Situations Fund III QP, L.P. (QP), Special Situations Cayman Fund, L.P. (Cayman), and Special Situations Life Sciences Fund, L.P. (LS), respectively. 539,418 shares of Common Stock are held by QP, 179,806 shares of Common Stock are held by Cayman and 422,962 shares of Common Stock are held by LS. The interest of Marxe, Greenhouse and Stettner in the shares of Common Stock owned by QP, Cayman and LS is limited to the extent of his pecuniary interest