Investments	3 Months Ended
Mar. 31, 2021
Equity Method Investments And Joint Ventures [Abstract]
Investments	4. Investments The Company’s equity method investments include an ownership interest in Immunotherapy NANTibody, LLC (“NANTibody”), NantCancerStemCell, LLC (“NantStem”) and ImmuneOncia Therapeutics, LLC, among others. The Company’s other equity investments include an ownership interest in NantBioScience, Inc. (“NantBioScience”) and Celularity Inc. The Company`s marketable investment includes an ownership interest in ImmunityBio, Inc. (“ImmunityBio”). On March 9, 2021, NantKwest, Inc. and ImmunityBio completed their previously announced 100% stock-for-stock merger (the “Merger”). The combined company operates under the name ImmunityBio, Inc. and its shares of common stock commenced trading on the Nasdaq Global Select Market on March 10, 2021 under the new ticker, “IBRX”. The former stockholders of ImmunityBio were entitled to receive 0.8190 shares of common stock of the combined company for each outstanding share of ImmunityBio common stock held immediately prior to the Merger. Prior to the closing of the Merger, the Company owned 10,000,000 shares of common stock of ImmunityBio, and the Company therefore received 8,190,000 shares of common stock of the post-merger company in the Merger. The Company’s investment in ImmunityBio has historically been included as an equity investment in its consolidated balance sheets and accounted for as an equity security without a readily determinable fair value. As of the completion of the Merger, the Company accounts for its investment in ImmunityBio as an equity investment with a readily determinable fair value and has reclassified its investment in ImmunityBio to marketable investment within its consolidated balance sheets. The investment in ImmunityBio is classified as a current asset because the investment can be liquidated to finance the Company’s current operations. In connection with the change in fair value of its investment in ImmunityBio, the Company recorded a gain on marketable investment of $94.4 million during the three months ended March 31, 2021. NANTibody The Company’s investment in NANTibody is reported in equity method investments on its consolidated balance sheets and its share of NANTibody’s income or loss is recorded in loss on equity method investments on its consolidated statement of operations. The Company continues to hold 40% of the outstanding equity of NANTibody and NantCell, Inc. holds the remaining 60%. The Company`s investment in NANTibody had a carrying value of zero as of March 31, 2021 due to the Company’s share of cumulative losses. As of March 31, 2020, the carrying value of the Company`s investment in NANTibody was approximately $1.9 million. NANTibody recorded a net loss of $0.8 million and $1.4 million for the three months ended December 31, 2020 and 2019, respectively. As of December 31, 2020, NANTibody had $4.9 million in current assets, $5.5 million in current liabilities, $0.1 million in noncurrent assets and no noncurrent liabilities. The financial statements of NANTibody are not received sufficiently timely for the Company to record its portion of earnings or loss in the current financial statements and therefore the Company reports its portion of earnings or loss on a one quarter lag. NantStem The Company’s investment in NantStem is reported in equity method investments on its consolidated balance sheets and its share of NantStem’s income or loss is recorded in loss on equity method investments on its consolidated statement of operations. The Company is accounting for its interest in NantStem as an equity method investment, due to the significant influence the Company has over the operations of NantStem through its board representation and 20% voting interest. The carrying value of the Company’s investment in NantStem was approximately $18.2 million and $17.9 million as of March 31, 2021 and 2020, respectively. NantStem recorded a net gain of $0.1 million and $0.2 million for the three months ended December 31, 2020 and 2019, respectively. As of December 31, 2020, NantStem had $80.9 million in current assets, $1.1 million in noncurrent assets and no current and noncurrent liabilities. The financial statements of NantStem are not received sufficiently timely for the Company to record its portion of earnings or loss in the current financial statements and therefore the Company reports its portion of earnings or loss on a one quarter lag.

Investments

3 Months Ended

Mar. 31, 2021

Equity Method Investments And Joint Ventures [Abstract]

4. Investments

The Company’s equity method investments include an ownership interest in Immunotherapy NANTibody, LLC (“NANTibody”), NantCancerStemCell, LLC (“NantStem”) and ImmuneOncia Therapeutics, LLC, among others. The Company’s other equity investments include an ownership interest in NantBioScience, Inc. (“NantBioScience”) and Celularity Inc. The Company`s marketable investment includes an ownership interest in ImmunityBio, Inc. (“ImmunityBio”).

On March 9, 2021, NantKwest, Inc. and ImmunityBio completed their previously announced 100% stock-for-stock merger (the “Merger”). The combined company operates under the name ImmunityBio, Inc. and its shares of common stock commenced trading on the Nasdaq Global Select Market on March 10, 2021 under the new ticker, “IBRX”. The former stockholders of ImmunityBio were entitled to receive 0.8190 shares of common stock of the combined company for each outstanding share of ImmunityBio common stock held immediately prior to the Merger. Prior to the closing of the Merger, the Company owned 10,000,000 shares of common stock of ImmunityBio, and the Company therefore received 8,190,000 shares of common stock of the post-merger company in the Merger.

The Company’s investment in ImmunityBio has historically been included as an equity investment in its consolidated balance sheets and accounted for as an equity security without a readily determinable fair value. As of the completion of the Merger, the Company accounts for its investment in ImmunityBio as an equity investment with a readily determinable fair value and has reclassified its investment in ImmunityBio to marketable investment within its consolidated balance sheets. The investment in ImmunityBio is classified as a current asset because the investment can be liquidated to finance the Company’s current operations. In connection with the change in fair value of its investment in ImmunityBio, the Company recorded a gain on marketable investment of $94.4 million during the three months ended March 31, 2021.

NANTibody

The Company’s investment in NANTibody is reported in equity method investments on its consolidated balance sheets and its share of NANTibody’s income or loss is recorded in loss on equity method investments on its consolidated statement of operations. The Company continues to hold 40% of the outstanding equity of NANTibody and NantCell, Inc. holds the remaining 60%. The Company`s investment in NANTibody had a carrying value of zero as of March 31, 2021 due to the Company’s share of cumulative losses. As of March 31, 2020, the carrying value of the Company`s investment in NANTibody was approximately $1.9 million.

NANTibody recorded a net loss of $0.8 million and $1.4 million for the three months ended December 31, 2020 and 2019, respectively. As of December 31, 2020, NANTibody had $4.9 million in current assets, $5.5 million in current liabilities, $0.1 million in noncurrent assets and no noncurrent liabilities.

The financial statements of NANTibody are not received sufficiently timely for the Company to record its portion of earnings or loss in the current financial statements and therefore the Company reports its portion of earnings or loss on a one quarter lag.

NantStem

The Company’s investment in NantStem is reported in equity method investments on its consolidated balance sheets and its share of NantStem’s income or loss is recorded in loss on equity method investments on its consolidated statement of operations. The Company is accounting for its interest in NantStem as an equity method investment, due to the significant influence the Company has over the operations of NantStem through its board representation and 20% voting interest. The carrying value of the Company’s investment in NantStem was approximately $18.2 million and $17.9 million as of March 31, 2021 and 2020, respectively.

NantStem recorded a net gain of $0.1 million and $0.2 million for the three months ended December 31, 2020 and 2019, respectively. As of December 31, 2020, NantStem had $80.9 million in current assets, $1.1 million in noncurrent assets and no current and noncurrent liabilities.

The financial statements of NantStem are not received sufficiently timely for the Company to record its portion of earnings or loss in the current financial statements and therefore the Company reports its portion of earnings or loss on a one quarter lag.