#1 Payment of tax liability by withholding securities incident to the settlement of the three-year performance period awards that were granted under the Long-Term Incentive Plan, following the recent final certification of the achievement of the performance conditions by the Compensation Committee.

#2 The number of shares represents the cash value of dividend rights that were settled in shares of Insperity, Inc. common stock based on the fair market value of the common stock on the trading day immediately preceding the settlement date.

#1 Represents a gift of shares to a charitable organization.

#1 Represents a gift of shares to a charitable organization.

#1 On this date, the Compensation Committee certified the achievement of the final performance conditions for these three-year performance period awards granted in 2021. These shares of Insperity, Inc. common stock ("Common Stock") will be settled as soon as practicable.

#2 The number of shares does not include additional shares related to the cash value of dividend rights that will be settled in shares of Common Stock. The value of these dividend rights will be based on the fair market value of the Common Stock on the trading day immediately preceding the final settlement date following the certification of the final performance conditions.