|12 Months Ended|
Dec. 31, 2019
|Related Party Transactions [Abstract]|
3. RELATED-PARTY TRANSACTIONS
We have several agreements that govern our relationship with Cellectis, some of which require us to make payments to Cellectis. Pursuant to our management services agreement with Cellectis, we incurred management fee expenses of $1.3 million in 2019, $2.3 million in 2018 and $2.0 million in 2017.
Cellectis has also guaranteed the lease agreement for our headquarters. Cellectis’ guarantee of our obligations under the lease will terminate at the end of the second consecutive calendar year in which our tangible net worth exceeds $300 million.
During the year ended December 31, 2018, Cellectis purchased 550,000 shares of common stock in our follow-on offering at the public offering price of $15.00 per share. In addition, in connection with the vesting on June 14, 2018, of restricted stock units for certain of our and Cellectis’ employees and nonemployees, Cellectis purchased 63,175 shares of our common stock at a price of $19.49 per share (the closing price reported on the NASDAQ Global Market on June 14, 2018) directly from such employees and nonemployees in private transactions pursuant to share purchase agreements dated June 13, 2018.
TALEN® is our primary gene-editing technology, and it is the foundation of our technology platform. TALEN® technology was invented by researchers at the University of Minnesota and Iowa State University and exclusively licensed to Cellectis. We obtained an exclusive license for the TALEN® technology for commercial use in plants from Cellectis. We also license other technology from Cellectis. We owe Cellectis royalties on any revenue we generate from sales of products less certain amounts as defined in the license agreement, as well as a percentage of any sublicense revenues. We have incurred $328,000 of license and royalty fees for the year ended December 31, 2019 and nominal license and royalty fees for the years ended December 31, 2018 and 2017.
The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef