We have reserved shares of common stock, on an as-converted basis, for future issuance as follows (in thousands):



	September 30, 2014	December 31, 2013
Conversion of convertible preferred stock outstanding ⁽¹⁾	—	24,000
Outstanding stock options and RSAs	13,977	11,245
Outstanding stock purchase rights	2	2
Conversion of convertible debt and related interest expense ⁽²⁾	—	3,949
Shares reserved for future option and RSA grants	12,447	8,941
Shares reserved under Employee Stock Purchase Plan	651	—
Total	27,077	48,137

⁽¹⁾Upon the closing of our IPO, all shares of our convertible preferred stock were converted to 24 million shares of common stock on a one-for-one basis.

⁽²⁾Upon the closing of our IPO, all noteholders with the exception of one noteholder converted the principal and accrued interest amount outstanding under their subordinated convertible promissory notes into shares of our common stock at the IPO price of $43.00 per share. The noteholder, who did not elect to so convert, was paid a total of $23.6 million which included principal and accrued interest less applicable withholding taxes of $1.1 million. The remainder of the noteholders converted the remaining debt balance of approximately $96.5 million including principal and accrued interest into 2.2 million shares of our common stock.