LIGHTBRIDGE CORP

CUSIP: 53224K104 Class: COMMON STOCK

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

Note: Option positions (PUT/CALL) are excluded.

Q3 2014
Shares 8,671 Value ($000) $20 Avg Close — Range —
Q2 2014
Shares 13,471 Value ($000) $37 Avg Close — Range —
Q1 2014
Shares 14,703 Value ($000) $40 Avg Close — Range —
Q4 2013
Shares 1,776 Value ($000) $3 Avg Close — Range —
Q3 2013
Shares 676 Value ($000) $1 Avg Close — Range —
Q2 2013
Shares 457 Value ($000) $1 Avg Close — Range —