X0306 4 2022-03-17 0001095565 HEALTHSTREAM INC HSTM 0001485077 Sousa Michael 500 11TH AVENUE NORTH SUITE 1000 NASHVILLE TN 37203 1 Senior Vice President Common Stock Holding 2022-03-17 4 M 0 21048 0 A 51867 D Common Stock Holding 2022-03-17 4 F 0 6083 19.94 D 45784 D Restricted Share Units 0 2022-03-17 4 M 0 1864 0 D Common Stock 1864 0 D Restricted Share Units 0 2022-03-17 4 M 0 8750 0 D Common Stock 8750 17500 D Restricted Share Units 0 2022-03-17 4 M 0 7000 0 D Common Stock 7000 10500 D Restricted Share Units 0 2022-03-17 4 M 0 1430 0 D Common Stock 1430 1667 D Restricted Share Units 0 2022-03-17 4 M 0 1146 0 D Common Stock 1146 3724 D Restricted Share Units 0 2022-03-17 4 M 0 858 0 D Common Stock 858 4859 D Shares acquired on vesting of restricted share units. Shares withheld for payment of tax liability. Each restricted share unit (RSU) represents the contingent right to receive one share of common stock upon vesting of the unit. The RSUs are subject to a four year vesting schedule, contingent upon continued service at the time of vesting. 15% vest on March 15, 2019, 20% vest on March 15, 2020, 30% vest on March 15, 2021, and the remaining 35% vest on March 15, 2022. Not applicable. Vesting of these RSUs is contingent upon continued service at the time of vesting and the achievement of certain performance criteria, which are established on an annual basis by the Compensation Committee of the Board of Directors. Up to 10% vest on March 15, 2019 for the period January 1, 2018 - December 31, 2018; up to 15% vest on March 15, 2020 for the period January 1, 2019 - December 31, 2019; up to 20% vest on March 15, 2021 for the period January 1, 2020 - December 31, 2020; up to 25% vest on March 15, 2022 for the period January 1, 2021 - December 31, 2021; and up to 30% vest on March 15, 2023 for the period January 1, 2022 - December 31, 2022. Vesting is determined based on actual performance. RSUs that do not vest during a performance period may become eligible for vesting during the next performance period. The performance criteria for the period January 1, 2021 - December 31, 2021 was achieved; therefore 25% of the awards vested on March 15, 2022. Represents RSUs granted in 2018 which failed to vest based on a performance period in 2020, but which continued to be eligible for vesting based on the achievement of catch-up performance criteria for a performance period in 2021 (as such concept is referenced in Note (6) above). Based on the achievement of the financial performance over the catch-up performance period in 2021, all 7,000 of these RSUs became vested. The RSUs are subject to a four year vesting schedule, contingent upon continued service at the time of vesting. 15% vest on March 15, 2020, 20% vest on March 15, 2021, 30% vest on March 15, 2022, and the remaining 35% vest on March 15, 2023. The RSUs are subject to a four year vesting schedule, contingent upon continued service at the time of vesting. 15% vest on March 11, 2021, 20% vest on March 11, 2022, 30% vest on March 11, 2023, and the remaining 35% vest on March 11, 2024. The RSUs are subject to a four year vesting schedule, contingent upon continued service at the time of vesting. 15% vest on March 17, 2022, 20% vest on March 17, 2023, 30% vest on March 17, 2024, and the remaining 35% vest on March 17, 2025. /s/ Michael Sousa 2022-03-18