LIGHTBRIDGE Corp — Director's Dealing 2014

Nov 19, 2014

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: LIGHTBRIDGE Corp (LTBR)
CIK: 0001084554
Period of Report: 2014-11-12

Reporting Person: MARXE AUSTIN W & GREENHOUSE DAVID M (10% Owner)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3508789	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Warrants	$9	2017-07-28	Common Stock (454546)		Indirect
Warrants	$2.3	2021-04-25	Common Stock (571428)		Indirect
Warrants	$2.31	2022-05-17	Common Stock (2734590)		Indirect

Footnotes

F1: 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 Private Equity Fund, L.P. (PE). 2,130,044 shares of Common Stock are held by QP, 719,684 shares of Common Stock are held by Cayman, 659,061 shares of Common Stock are held by PE. The interest of Marxe, Greenhouse and Stettner in the shares of Common Stock owned by QP, Cayman and PE is limited to the extent of his pecuniary interest.

F2: This is a joint filing by Austin W. Marxe (Marxe) and David M. Greenhouse (Greenhouse). 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 Private Equity Fund, LP (PE). 2,366,680 Warrants are owned by QP, 788,961 Warrants are owned by Cayman and 634,923 Warrants are owned by PE. The interest of Marxe, Greenhouse and Stettner in the shares of Warrants owned by QP, Cayman and PE are limited to the extent of his pecuniary interest.

F3: 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.

F4: 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.