| Offering Information 
 Original filing date: February 10, 2006
 
 Date of offering: June 2, 2006
 
 Exchange: Nasdaq
 
 Proposed symbol: LUNA
 
 Amount of offering: $21 million
 
 Significant shareholders (post-IPO): Kent A. Murphy, the CEO and founder of LUNA, owns 25.7%; Carilion Health Systems owns 21.7%
 
 Underwriters: ThinkEquity Partners LLC, WR Hambrecht & Company, and Merriman Curhan Ford & Company
 
 Capitalization
 
 Shares outstanding post-IPO: 9,734,325
 
 The calculation of the number of shares outstanding excludes the following:
 
 --- 4,812,367 shares of common stock issuable upon exercise of options outstanding at a weighted-average exercise price of $0.90 per share, which includes 2,834,129 shares of common stock issuable upon exercise of options outstanding at an exercise price of $0.35 per share, 113,047 shares of common stock issuable upon exercise of options outstanding at an exercise price of $0.39 per share and 1,865,191 shares of common stock issuable upon exercise of options outstanding at an exercise price of $1.77 per share;
 
 --- 235,777 shares of common stock reserved for future issuance upon the exercise of options available for grant under our 2003 Stock Plan;
 
 --- 61,214 shares of common stock issuable upon exercise of warrants (not subject to escrow) outstanding at a weighted-average exercise price of $3.04 per share, which includes 2,182 shares of common stock issuable upon exercise of outstanding warrants at an exercise price of $37.26 per share and 59,032 shares of common stock issuable upon exercise of outstanding warrants at an exercise price of $1.77 per share;
 
 --- 1,065,740 shares of common stock issuable upon the conversion of the principal amount outstanding under senior convertible promissory notes issued to Carilion Health System on December 30, 2005 and, assuming we elect to convert all of the accrued interest on these notes into shares of common stock after these notes remain outstanding for a maximum period of up to eight years, up to an additional 511,553 shares of common stock; and
 
 --- 69,390 shares of common stock issued or reserved for issuance in connection with the acquisition of Luna Technologies, Inc. that were held in escrow on that date, and 146 shares of common stock issuable upon the exercise of warrants at an exercise price of $37.26 per share held in escrow as of that date, and which shares and warrants to purchase shares are expected to be cancelled upon the closing of this offering.
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