Insperity, Inc. (NYSE:NSP), a leading provider of human resources and business performance solutions for America’s best businesses, will release its third quarter earnings before the opening of the New York Stock Exchange on Thursday, October 29, 2026. A teleconference hosted by Insperity’s management will be held at 8:30 a.m. ET to discuss the quarter and business trends. Investors, analysts, media and other interested persons may access the call at 877-545-0523, conference i.d. number 220125. The call will also be webcast live at http://ir.insperity.com. A replay of the conference call will be available at 877-481-4010, conference i.d. number 54622, for one week after the call. The webcast will be archived for one year. The conference call script and company guidance for the fourth quarter and full year 2026 will be posted to the Insperity Investor Relations website.

About Insperity

Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper. Offering a suite of the most comprehensive, scalable HR solutions available in the marketplace, Insperity is defined by an unrivaled breadth and depth of services and level of care. Through an optimal blend of premium HR service and technology, Insperity delivers the administrative relief, reduced liabilities and better benefit solutions that businesses need to drive performance and growth. With 2025 revenues of $6.8 billion and sales and service operations throughout the U.S., Insperity is currently making a difference in thousands of businesses and communities nationwide. For more information, visit http://www.insperity.com.

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Investor Relations Contact:

James D. Allison

Executive Vice President of Finance,

Chief Financial Officer and Treasurer

281-348-3140

Investor.Relations@Insperity.com

News Media Contact:

Cynthia Murga

Director, Public Relations

713-324-1414

Media@insperity.com