Net Loss per Share

3 Months Ended

Mar. 31, 2019

4. Net Loss per Share

Basic net loss per share is computed by dividing net loss by the weighted average number of shares of common stock outstanding for the period. The Company’s potentially dilutive shares, which include outstanding common stock options, unvested restricted stock and preferred stock, have not been included in the computation of diluted net loss per share for any of the periods presented as the result would be anti-dilutive. Such potentially dilutive shares of common stock at March 31, 2019 and 2018 consisted of the following:

	March 31,
	2019		2018
Stock options		5,416,085		3,822,968
Unvested restricted stock		1,621,845		1,532,201
Warrants		18,939,394		—
Preferred stock		—		35,152,089
		25,977,324		40,507,258

During the year ended December 31, 2018, the Company and Precigen, Inc., or Precigen, a wholly owned subsidiary of Intrexon Corporation, or Intrexon, entered into a License Agreement to replace all existing agreements between the companies that will provide the Company with certain exclusive and non-exclusive rights to technology controlled by Precigen. The License Agreement was dated October 5, 2018. In consideration of the Company entering into the License Agreement, Intrexon agreed to forfeit and return to the Company all shares of the Company’s Series 1 Preferred Stock held by or payable to Intrexon as of the date of the License Agreement (Note 6).