UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
				   (Amendment No. ___)

Lightbridge Corporation
                  _____________________________________________
       (Name of Issuer)
       
Common Stock
                  _______________________________________________
(Title of Class of Securities)

53224K104
                    _________________________________________________
(CUSIP Number)


		with a copy to:
Austin W. Marxe		Allen B. Levithan, Esq.
527 Madison Avenue, Suite 2600		Lowenstein Sandler PC
New York, New York 10022		65 Livingston Avenue
			Roseland, New Jersey 07068
			(973) 597-2406
(Name, Address and Telephone Number of Person 
Authorized to Receive Notices and Communications)

November 30, 2014
(Date of Event which Requires Filing of this Statement)

                                                                                
Check the appropriate box to designate the rule pursuant to which this 
Schedule is filed:

	____	Rule 13d-1(b)
	_x__	Rule 13d-1(c)
	____	Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting 
person's initial filing on this form with respect to the subject class of 
securities, and for any subsequent amendment containing information which 
would alter disclosures provided in a prior cover page.
The information required on the remainder of this cover page shall not be 
deemed
 to be ?filed? for the purpose of Section 18 of the Securities Exchange Act 
of
 1934 (?Act?) or otherwise subject to the liabilities of that section of the 
Act
 but shall be subject to all other provisions of the Act (however, see the 
Notes).



Cusip No. 53224K104       13G                           Page 2 of 6 Pages
1.Names of Reporting Persons.  I.R.S. Identification Nos. of above persons 
(entities only):
	
	Austin W. Marxe, David M. Greenhouse and Adam C. Stettner

	
	2.	Check the Appropriate Box if a Member of a Group (See 
Instructions):
	(a)	[    ]	 	Not Applicable
	(b)	[    ]	
													
	3.	SEC Use Only
	
	4.	Source of Funds (See Instructions):  00
	
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to 
Items 2(d) or 2(e):
				Not Applicable
_____________________________________________________________________________
_
      6.    Citizenship or Place of Organization:    United States
_____________________________________________________________________________
_
	Number of	7.	Sole Voting Power:	0		
	Shares Beneficially	8.	Shared Voting Power:	3,508,789*		
	Owned by
	Each Reporting	9.	Sole Dispositive Power:	0		
	Person With	10.	Shared Dispositive Power:	  3,508,789*__
	
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person:
            3,508,789*
	
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares
		(See Instructions):		               Not Applicable
	
	13.	Percent of Class Represented by Amount in Row (11):     19.6%*
	
	14.	Type of Reporting Person (See Instructions):       IA, IN
	

* This is a joint filing by Austin W. Marxe (?Marxe?), David M. Greenhouse 
(?Greenhouse?) and Adam C. Stettner (?Stettner?).  Marxe, Greenhouse and 
Stettner share sole voting and investment power over 719,684 shares of Common 
Stock and 214,697 Warrants(1) and 574,264 Warrants(2) owned by Special 
Situations Cayman Fund, L.P., 2,130,044 shares of Common Stock, 641,234 
Warrants(1) and 1,695,446 Warrants(2) owned by Special Situations Fund III QP, 
L.P. and 659,061 shares of Common Stock, 170,043 Warrants(1) and 464,880 
Warrants(2) owned by Special Situations Private Equity Fund, L.P.  See Items 2 
and 4 of this Schedule for additional information.


(1)	The warrants described above may be exercised to the extent that the total
number of shares of Common Stock then beneficially owned does not exceed
4.99% of the outstanding shares.  The holder may request an increase of up to
9.99% of the outstanding shares, effective on the 61st day after notice is
given to the Company.

(2)	The warrants described above may be exercised to the extent that the total
number of shares of Common Stock then beneficially owned does not exceed 4.99%
of the outstanding shares.  The holder may request an increase of up to 19.99%
of the outstanding shares, effective on the 61st day after notice is given to
the Company.


								Page 3 of 6 Pages
Item 1.	Security and Issuer:
	(a) Lightbridge Corporation
	(b) 1600 Tyson Boulevard, Suite 550, McLean, VA 22102

Item 2. (a)	Name of Person Filing:
	The persons filing this report are Austin W. Marxe (?Marxe?), 
David M. Greenhouse (?Greenhouse?) and Adam C. Stettner (?Stettner?), who are 
members of SSCayman LLC (?SSCay?), the general partner of Special Situations 
Cayman Fund, L.P. (?Cayman?).  Marxe, Greenhouse and Stettner are controlling 
principals of AWM Investment Company, Inc. (?AWM?), the general partner of 
MGP Advisers Limited Partnership (?MGP?), the general partner of Special 
Situations Fund III QP, L.P. (?SSFQP?).  Marxe, Greenhouse and Stettner are 
members of MG Advisers L.L.C. (?MG?), the general partner of Special 
Situations Private Equity Fund, L.P. (?SSPE?). AWM serves as the investment 
adviser to Cayman, SSFQP and SSPE. The principal business of each Fund is to 
invest in equity and equity-related securities and other securities of any 
kind or nature.


             (b) Address of Principal Business Office or, if none, Residence:  

	The principal business address for Marxe, Greenhouse and Stettner 
is 527 Madison Avenue, Suite 2600, New York, NY  10022.


              (c) Citizenship:

       	           Austin W. Marxe, David M. Greenhouse and Adam C. 
Stettner are United States citizens. 

              (d) Title of Class of Securities:  Common Stock
	              (e) CUSIP Number:  53224K104.

Item 3.     If this statement is filed pursuant to $240.13d-1(b) or 240.13d-
2(b), check whether 
            the person filing is a:    Not Applicable

(a) ( )	Broker or Dealer registered under section 15 of the Act;
(b) ( )	Bank as defined in section 3(a) (6) of the Act;
(c) ( )	Insurance Company as defined in section 3(a) (19) of the Act;
(d) ( )	Investment Company registered under section 8 of the Investment 
Company Act of 1940;
(e) ( )	An Investment Adviser in accordance with $240.13d
		-1(b)(I)(ii)(E);		
(f) ( )	An employee benefit plan or endowment fund in accordance with 
$240.13d-1(b)(I)(ii)(F);


								Page 4 of 6 Pages

(g) ( )	A parent holding company or control person in accordance with 
$240.13d-
	1(b)(1)(ii)(G);
(h) ( ) 	A savings association as defined in Section 3(b) of the Federal 
Deposit Insurance 
								
	Act;
(i) ( ) 	A church plan that is excluded from the definition of an 
investment company under section 3(c)(14) of the Investment 
Company Act of 1940;
(j) ( )   	Group, in accordance with $240.13d-1(b)(1)(ii)(J).


Item 4.       Ownership:

	 (a) Amount Beneficially Owned:  Messrs. Marxe, Greenhouse and Stettner 
beneficially own a total of 3,508,789 shares of Common Stock, 1,025,974 
Warrants(1) and 2,734,590 Warrants(2) to purchase Common Shares.  This amount 
includes 719,684 shares of Common Stock and 214,697 Warrants(1) and 574,264 
Warrants(2) owned by Special Situations Cayman Fund, L.P., 2,130,044 shares of 
Common Stock, 641,234 Warrants(1) and 1,695,446 Warrants(2) owned by Special 
Situations Fund III QP, L.P. and 659,061 shares of Common Stock, 170,043 
Warrants(1) and 464,880 Warrants(2) owned by Special Situations Private Equity 
Fund, L.P.  

	(b) Percent of Class:  Messrs. Marxe, Greenhouse and Stettner 
beneficially own 19.6% of the outstanding shares, of which Cayman owns 4.0% 
of the outstanding shares, SSFQP owns 11.9% of the outstanding shares and 
SSPE owns 3.7% of the outstanding shares.

	(c) Number of Shares as to which the person has:
 
		(i)	Sole power to vote or to direct the vote:  0

		(ii)	Shared power to vote or to direct the vote:  3,508,789

		(iii)	Sole power to dispose or to direct the disposition of:  0

(iv)	Shared power to dispose or to direct the disposition of:  
3,508,789


Item 5. Ownership of Five Percent or Less of a Class:  If this statement is 
being filed to report the fact that as of the date hereof the reporting 
person has ceased to be the beneficial owner of more that five percent of the 
class of securities, check the following __.

Item 6.Ownership of More than Five Percent on Behalf of Another Person:  Not 
Applicable.


						







       		Page 5 of 6 Pages

Item 7. Identification and Classification of the Subsidiary Which Acquired 
the Security being Reported on By the Parent Holding Company:  Not 
Applicable.

Item 8. Identification and Classification of Members of the Group:  Not 
applicable

Item 9. Notices of Dissolution of Group:  Not applicable.

Item 10.Certification:
	
	By signing below I certify that, to the best of my knowledge and 
belief, the securities
referred to above were acquired and are held in the ordinary course of 
business and were not 
acquired and are not held for the purpose of or with the effect of changing 
or influencing the
control of the issuer of the securities and were not acquired and are not 
held in connection with 
or as a participant in any transaction having that purpose or effect.





SIGNATURE


	After reasonable inquiry and to the best of my knowledge and belief, I 
certify that the information set forth in this statement is true, complete 
and correct.


Dated: December 9, 2014     



				/s/Austin W. Marxe                   
				AUSTIN W. MARXE
				


				/s/David M Greenhouse            
				DAVID M. GREENHOUSE


				/s/Adam C. Stettner
				ADAM C. STETTNER
		





Attention:  Intentional misstatements or omissions of fact constitute Federal 
criminal violations (See 18 U.S.C. 1001).



       								Page 6 of 6 Pages


JOINT FILING AGREEMENT


	Austin W. Marxe, David M. Greenhouse and Adam C. Stettner hereby agree 
that the Schedule 13G to which this agreement is attached is filed on behalf 
of each of them.





	/s/_Austin W. Marxe	
Austin W. Marxe



	/s/_David M. Greenhouse	       
David M. Greenhouse 



	/s/ Adam C. Stettner
	Adam C. Stettner
-2-

S5313/1
1319328.02