Rigel Pharmaceuticals, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION (Details 4)

STOCK-BASED COMPENSATION (Details 4) (Employee Stock Option [Member], USD $)	12 Months Ended
	Dec. 31, 2014
Exercise Price Range Dollars 1.68 To 3.55 [Member]
Stock options by exercise price
Range of exercise prices, low end of the range (in dollars per share)	$ 1.68
Range of exercise prices, high end of the range (in dollars per share)	$ 3.55
Options Outstanding
Number of Shares Underlying Options (in shares)	2,317,779
Weighted-Average Remaining Contractual Life	8 years 9 months 7 days
Weighted-Average Exercise Price (in dollars per share)	$ 3.29
Options Exercisable
Number of Shares Underlying Options (in shares)	1,112,849
Weighted Average Exercise Price (in dollars per share)	$ 3.36
Exercise Price Range Dollars 3.59 To 6.49 [Member]
Stock options by exercise price
Range of exercise prices, low end of the range (in dollars per share)	$ 3.59
Range of exercise prices, high end of the range (in dollars per share)	$ 6.49
Options Outstanding
Number of Shares Underlying Options (in shares)	3,300,357
Weighted-Average Remaining Contractual Life	6 years 9 months 18 days
Weighted-Average Exercise Price (in dollars per share)	$ 4.99
Options Exercisable
Number of Shares Underlying Options (in shares)	2,050,668
Weighted Average Exercise Price (in dollars per share)	$ 5.84
Exercise Price Range Dollars6.51 To6.55 [Member]
Stock options by exercise price
Range of exercise prices, low end of the range (in dollars per share)	$ 6.51
Range of exercise prices, high end of the range (in dollars per share)	$ 6.55
Options Outstanding
Number of Shares Underlying Options (in shares)	2,207,938
Weighted-Average Remaining Contractual Life	7 years 6 months 11 days
Weighted-Average Exercise Price (in dollars per share)	$ 6.52
Options Exercisable
Number of Shares Underlying Options (in shares)	1,991,664
Weighted Average Exercise Price (in dollars per share)	$ 6.52
Exercise Price Range Dollars 6.73 To 7.40 [Member]
Stock options by exercise price
Range of exercise prices, low end of the range (in dollars per share)	$ 6.73
Range of exercise prices, high end of the range (in dollars per share)	$ 7.40
Options Outstanding
Number of Shares Underlying Options (in shares)	2,196,855
Weighted-Average Remaining Contractual Life	5 years 3 months 26 days
Weighted-Average Exercise Price (in dollars per share)	$ 6.85
Options Exercisable
Number of Shares Underlying Options (in shares)	2,187,713
Weighted Average Exercise Price (in dollars per share)	$ 6.85
Exercise Price Range Dollars 7.53 To 8.27 [Member]
Stock options by exercise price
Range of exercise prices, low end of the range (in dollars per share)	$ 7.53
Range of exercise prices, high end of the range (in dollars per share)	$ 8.27
Options Outstanding
Number of Shares Underlying Options (in shares)	2,132,765
Weighted-Average Remaining Contractual Life	6 years 5 months 1 day
Weighted-Average Exercise Price (in dollars per share)	$ 8.11
Options Exercisable
Number of Shares Underlying Options (in shares)	2,091,925
Weighted Average Exercise Price (in dollars per share)	$ 8.11
Exercise Price Range Dollars 8.34 To 11.73 [Member]
Stock options by exercise price
Range of exercise prices, low end of the range (in dollars per share)	$ 8.34
Range of exercise prices, high end of the range (in dollars per share)	$ 11.73
Options Outstanding
Number of Shares Underlying Options (in shares)	2,528,537
Weighted-Average Remaining Contractual Life	3 years 6 months 7 days
Weighted-Average Exercise Price (in dollars per share)	$ 10.29
Options Exercisable
Number of Shares Underlying Options (in shares)	2,522,633
Weighted Average Exercise Price (in dollars per share)	$ 10.29
Exercise Price Range Dollars 15.49 To 24.56 [Member]
Stock options by exercise price
Range of exercise prices, low end of the range (in dollars per share)	$ 15.49
Range of exercise prices, high end of the range (in dollars per share)	$ 24.56
Options Outstanding
Number of Shares Underlying Options (in shares)	1,132,244
Weighted-Average Remaining Contractual Life	11 months 16 days
Weighted-Average Exercise Price (in dollars per share)	$ 23.41
Options Exercisable
Number of Shares Underlying Options (in shares)	1,132,244
Weighted Average Exercise Price (in dollars per share)	$ 23.41
Exercise Price Dollars26.45 [Member]
Stock options by exercise price
Range of exercise prices, high end of the range (in dollars per share)	$ 26.45
Options Outstanding
Number of Shares Underlying Options (in shares)	1,154,198
Weighted-Average Remaining Contractual Life	3 years 29 days
Weighted-Average Exercise Price (in dollars per share)	$ 26.45
Options Exercisable
Number of Shares Underlying Options (in shares)	1,154,198
Weighted Average Exercise Price (in dollars per share)	$ 26.45
Exercise Price Range Dollars 1.68 To 26.45 [Member]
Stock options by exercise price
Range of exercise prices, low end of the range (in dollars per share)	$ 1.68
Range of exercise prices, high end of the range (in dollars per share)	$ 26.45
Options Outstanding
Number of Shares Underlying Options (in shares)	16,970,673
Weighted-Average Remaining Contractual Life	5 years 9 months 15 days
Weighted-Average Exercise Price (in dollars per share)	$ 9.07
Options Exercisable
Number of Shares Underlying Options (in shares)	14,243,894
Weighted Average Exercise Price (in dollars per share)	$ 10.09