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Stockholders' Equity | 12 Months Ended
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Dec. 31, 2020
Federal Home Loan Banks [Abstract] |
Stockholders' Equity | 4. STOCKHOLDERS’ EQUITY Preferred Stock Preferred stock of 50.0 million shares, with a $0.0001 par value, is authorized but unissued. Follow-on Public Offerings On May 22, 2018, we completed a follow-on offering of our common stock. We sold an aggregate of 4,057,500 shares of common stock at a price of $15.00 per share, including 457,500 shares of common stock pursuant to the exercise of the underwriters’ option to purchase additional shares. In the aggregate, we received net proceeds from the follow-on offering and exercise of the overallotment option of $57.0 million, after deducting underwriting discounts and commissions of $3.2 million and offering expenses totaling $0.7 million. As part of the follow-on offering, Cellectis purchased 550,000 shares of common stock for a value of $8.3 million, the proceeds of which are included in the net proceeds of $57.0 million. On October 20, 2020, we completed a follow-on offering of our common stock. We sold an aggregate of 3,750,000 shares of common stock at a price of $4.00 per share. In the aggregate, we received net proceeds from the follow-on offering of $14.0 million, after deducting $1.0 million of placement and agent fees and other offering expenses. As part of the follow-on offering, Cellectis purchased 1,250,000 shares of common stock for a value of $5.0 million, the proceeds of which are included in the net proceeds of $14.0 million. Share Repurchases We repurchased $0.8 million of common stock in 2019 and $0.2 million in 2018.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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