NH

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From December 31, 2022 to March 31, 2023 Share repurchase

From December 31, 2021 to December 31, 2022 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

NantHealth, Inc. announced that the company has implemented a reverse stock split at a ratio of 1-for-15, which is expected to be effective 5 p.m. Eastern Time (ET) on December 15, 2022.

From December 31, 2021 to March 31, 2022 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

From December 31, 2020 to December 31, 2021 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes Stock issued on Exchange of 2016 Notes

From June 30, 2021 to September 30, 2021 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

From March 31, 2021 to June 30, 2021 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes Stock issued on Exchange of 2016 Notes

From December 31, 2020 To March 31, 2021 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

From December 31, 2019 to December 31, 2020 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

From June 30, 2020 to September 30, 2020 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes and stock options exercised

From March 31, 2020 to June 30, 2020 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

from December 31, 2018 to December 31, 2019 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

from June 30, 2019 to September 30, 2019 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

from March 31, 2019 to June 30, 2019 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

from December 31, 2018 to March 31, 2019 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

From June 30, 2018 to September 30, 2018 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

From March 31, 2018 to June 30, 2018 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

from December 31, 2017 to March 31, 2018 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes of stock

from December 31, 2016 to December 31, 2017 Shares issued in connection with employee stock plans, net of shares withheld for employee taxes Retirement of stock

From December 31, 2015 to December 31, 2016 Conversion of members' interests Issuance of common stock upon conversion of related party promissory note Issuance of common stock in initial public offering, net of $13,034 in offering costs Series F put right accretion (post LLC conversion) Redeemable common stock put right expiration Stock-based compensation expense (post LLC conversion) Shares issued in connection with employee stock plans, net of shareswithheld for employee taxes

From December 31, 2015 to September 30, 2016 Conversion of members' interests Issuance of common stock upon conversion of related party promissory note Issuance of common stock in initial public offering, net of $13,034 in offering costs Redeemable common stock put right expiration Shares issued in connection with employee stock plans, net of shares withheld for employee taxes

from December 31, 2015 to June 30, 2016 Conversion of members' interests Issuance of common stock upon conversion of related party promissory note Issuance of common stock in initial public offering, net of $13,370 in offering costs Redeemable common stock put right expiration On June 1, 2016, immediately prior to the pricing of its initial public offering (“IPO”) and in conjunction with the LLC Conversion, all outstanding units of Nant Health, LLC were automatically converted into shares of the Company’s common stock. Immediately following the LLC Conversion, the Company effected a 1-for-5.5 reverse stock split of its common stock. All share and per share amounts in the Condensed Consolidated and Combined financial statements and notes thereto have been retroactively adjusted, where necessary, to give effect to this reverse stock split.

1.The LLC Conversion was effected on June 1, 2016. 2.A 1-for-5 1/2 reverse stock split of common stock, which was effected on June 1, 2016. 3.The Note Conversion was effected on June 1, 2016. 4.The issuance and sale of 6,500,000 shares of common stock in this offering at the initial public offering.