Letter Agreement by and between Insperity Holdings, Inc. and United Healthcare Insurance Company entered into as of March 26, 2025

March 26, 2025

Mr. James D. Allison

Insperity Holdings, Inc.

EVP of Finance, Chief Financial Officer and Treasurer

19001 Crescent Springs Drive

Kingwood, TX 77339                

Dear Jim:

For [ ] clients with Insperity “Client Service Agreement Effective Dates” between [ ] through [ ], UnitedHealthcare will [ ] for each [ ] covered for health insurance under UnitedHealthcare and Insperity’s Minimum Premium Financial Agreement and the Minimum Premium Administrative Services Agreement (the “[ ]”).

The [ ] will be executed as three [ ] statements.

The first [ ] will be [ ] in third quarter 2025 for clients with effective dates from [ ] through [ ]. To qualify for the [ ], an [ ] member must be included on the [ ], UnitedHealthcare membership report to be considered eligible for the [ ]. UHC will "[ ]" the [ ] based on the [ ] of additional [ ] members if [ ] or [ ] compared to the [ ] measurement is [ ] members.

The second [ ] will be [ ] in fourth quarter 2025 for clients with effective dates from [ ] through [ ]. To qualify for the [ ], an [ ] member must be included on the [ ], UnitedHealthcare membership report to be considered eligible for the [ ]. UHC will "[ ]" the [ ] based on the [ ] of additional [ ] members if [ ] or [ ] compared to the [ ] measurement is [ ] members.

The third [ ] will be [ ] in first quarter 2026 for clients with effective dates from [ ] through [ ]. To qualify for the [ ], an [ ] member must be included on the [ ] UnitedHealthcare membership report to be considered eligible for the [ ]. UHC will "[ ]" the [ ] based on the [ ] of additional [ ] members if [ ] or [ ] compared to the [ ] measurement is [ ] members.

The [ ] being offered is designed to help [ ] and is in addition to any prior [ ] provided for under the Minimum Premium Financial Agreement, amended and restated effective January 1, 2005, as amended, between the parties (the “MPFA”) or the Minimum Premium Administrative Services Agreement, amended and restated effective January 1, 2005, as amended, between the parties (the “MPASA” and, together with the MPFA, the “Minimum Premium Agreements”).

Insperity is to provide UHC with the requisite information between [ ], and [ ], on a [ ] basis to allow UHC to verify [ ] for [ ] members.

Insperity and UHC further agree that the [ ] contemplated herein is intended to be a [ ] event and shall in no way subsequently amend or modify the Minimum Premium Agreements (other than as expressly set forth in this letter). The parties also acknowledge and agree that the terms and conditions of this letter agreement, including the existence thereof, are subject to the provisions of Section 5(e) of the MPASA, relating to publicity of the arrangement.

If you agree with the terms of this Letter of Agreement, please sign below and return an executed copy to me via email to [ ].

Should you have any questions, please call me at ([ ]) [ ].