X0303 4 2011-03-01 0 0001075531 PRICELINE COM INC PCLN 0001214607 MYLOD ROBERT J JR 800 CONNECTICUT AVENUE NORWALK CT 06854 0 1 0 0 Vice Chairman Common Stock 2011-03-01 4 A 0 25096 0 A 89399 D Common Stock 2011-03-01 4 F 0 10779 453.88 D 78620 D Common Stock 2011-03-01 4 S 0 3860 441.89 D 74760 D Common Stock 2011-03-01 4 S 0 2800 442.79 D 71960 D Common Stock 2011-03-01 4 S 0 1700 443.83 D 70260 D Common Stock 2011-03-01 4 S 0 1000 444.75 D 69260 D Common Stock 2011-03-01 4 S 0 840 445.85 D 68420 D Common Stock 2011-03-01 4 S 0 300 447.18 D 68120 D Common Stock 2011-03-01 4 S 0 700 449.50 D 67420 D Common Stock 2011-03-01 4 S 0 300 451.54 D 67120 D Common Stock 2011-03-02 4 S 0 400 444.26 D 66720 D Common Stock 2011-03-02 4 S 0 100 446.50 D 66620 D Common Stock 2011-03-02 4 S 0 800 448.67 D 65820 D Common Stock 2011-03-02 4 S 0 5200 449.71 D 60620 D Common Stock 2011-03-02 4 S 0 2800 450.60 D 57820 D Common Stock 2011-03-02 4 S 0 800 451.62 D 57020 D Common Stock 2011-03-02 4 S 0 1100 452.98 D 55920 D Common Stock 2011-03-02 4 S 0 300 453.73 D 55620 D 2010 Performance Share Units 12192 D Restricted Stock Units 19358 D On March 1, 2011, performance share units vested pursuant to their terms and upon the satisfaction of the applicable performance criteria resulting in the issuance of 25,096 shares of priceline.com common stock. On March 1, 2011, 10,779 shares of priceline.com's common stock were withheld to satisfy certain tax withholding obligations related to the vesting of performance share units of Mr. Mylod. The shares were sold pursuant to a sales plan, dated November 17, 2010, that complies with the requirements of Rule 10b5-1(c)(1) under the Securities and Exchange Act of 1934, as amended. Represents the weighted average sales price. The range of prices received for the reported transactions was $441.38 - $442.31. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $442.37 - $443.31. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $443.41 - $444.29. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $444.41 - $445.265. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $445.41 - $446.21. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $446.96 - $447.34. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $449.00 - $449.76. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $450.99 - $451.91. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $444.00 - $444.70. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $448.13 - $448.89. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $449.21 - $450.20. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $450.23 - $451.22. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $451.40 - $452.33. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $452.47 - $453.45. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents the weighted average sales price. The range of prices received for the reported transactions was $453.49 - $454.19. Upon request by the Commission staff, priceline.com will provide full information regarding the number of shares sold at each separate price. Represents "target" number of performance share units outstanding. The actual number of shares issued, if any, could increase or decrease depending on certain performance factors. Represents "target" number of restricted stock units outstanding. The actual number of shares issued, if any, could decrease depending on certain performance factors. /s/ Robert J. Mylod, Jr. 2011-03-03