NH 2021 Annual Report

Phantom Unit Plan On March 31, 2015, the Company approved the NantHealth, LLC Phantom Unit Plan (the "Phantom Unit Plan"). The maximum number of phantom units that may be issued under the Phantom Unit Plan is equal to 11,590,909 minus the number of issued and outstanding Series C units of the Company. The grant date fair value of the phantom units is determined based on the closing price of the Company’s common stock on the NASDAQ Composite Index on the date of grant. All phantom units under the Phantom Unit Plan were fully vested as of December 31, 2020. Each grant of phantom units made to a participant under the Phantom Unit Plan vests over a requisite service period of 1 to 4 years, subject to completion of a liquidity event, and is subject to forfeiture upon termination of the participant’s continuous service to the Company for any reason. The Company’s IPO satisfied the liquidity event condition and the phantom units now entitle their holders to cash or noncash payments in an amount equal to the number of vested units held by that participant multiplied by the fair market value of one share of the Company’s common stock on the date each phantom unit vests. After the Company’s IPO, the Company will no longer issue any units under the Phantom Unit Plan. The Company settled all vested phantom unit payments held by United States-based participants in shares of the Company’s common stock and classified these awards as equity awards in its Consolidated Balance Sheets. Awards held by participants who are based outside of the United States were settled in cash and are classified within accrued and other current liabilities in the Consolidated Balance Sheets as of December 31, 2020. In order to satisfy payroll withholding tax obligations triggered by the issuance of shares of common stock to holders of vested phantom units, the Company issued recipients a net lower number of shares of common stock to satisfy tax withholding obligations and remitted a cash payment for the related withholding taxes. The following table summarizes the activity related to the unvested phantom units during the year ended December 31, 2020. Number of Units WeightedAverage GrantDate Fair Value Unvested phantom units outstanding - December 31, 2019 120,562 $ 11.49 Vested (111,699) $ 11.32 Forfeited (8,863) $ 14.26 Unvested phantom units outstanding - December 31, 2020 — $ — The total fair value of phantom units that vested during the year ended December 31, 2020 totaled $279. The Company previously granted phantom units to employees of related companies who are providing services to the Company under the Shared Services Agreement with NantWorks (see Note 19) as well as certain consultants of the Company. No phantom units were granted during the years ended December 31, 2021 and 2020. All other grants of phantom units have been made to employees of the Company. Stock-based compensation expense for the phantom units issued to participants who are based outside of the United States is re-measured at the end of each reporting period until the awards vest. The Company used the accelerated attribution method to recognize expense for all phantom units since the awards' vesting was subject to the completion of a liquidity event. The grant date fair value of the phantom units granted prior to LLC Conversion was estimated using both an option pricing method and a probability weighted expected return method. During the years ended December 31, 2021 and 2020, the Company issued 0 and 64,048 shares, respectively, of common stock to participants of the Phantom Unit Plan based in the United States, after withholding approximately 0 and 36,238 shares, respectively, to satisfy tax withholding obligations. The Company made a cash payment of $0 and $100 to cover employee withholding taxes upon the settlement of these vested phantom units during the years ended December 31, 2021 and 2020, respectively. 2016 Equity Incentive Plan In May and June of 2016, the Company’s Board of Directors adopted and the Company’s stockholders approved the 2016 Equity Incentive Plan (the "2016 Plan”) in connection with the Company’s IPO. The 2016 Plan provides for the grant of incentive stock options, non-statutory stock options, restricted stock, restricted stock units, stock appreciation rights, performance units and performance shares to employees, directors and consultants. NantHealth, Inc. Notes to Consolidated Financial Statements (Dollars in thousands, except per share amounts) - 131 -

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