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Exhibit 99.1 Insperity Announces First Quarter Results HOUSTON - May 3 , 2021 – Insperity , Inc. ( NYSE : NSP ) , a leading provider of human resources and business performance solutions for America's best businesses , today reported results for the first quarter ended Mar. 31 , 2021 : • Q1 revenue increased 5 % to $ 1.3 billion Q1 net income and diluted EPS of $ 61.9 million and $ 1.59 , respectively • Q1 adjusted EPS up 7 % to $ 1.82 Q1 adjusted EBITDA up 3 % to $ 104.2 million First Quarter Results For the first quarter of 2021 , reported net income and diluted earnings per share ( " EPS " ) were $ 61.9 million and $ 1.59 , respectively . Adjusted EBITDA increased 3 % to $ 104.2 million and adjusted EPS increased 7 % to $ 1.82 over the first quarter of 2020 , significantly above our expectations . The average number of worksite employees ( " WSEES " ) paid per month in Q1 2021 was 233,170 WSEES , which was at the mid - point of our expected range . As for the three drivers of our growth , WSEES paid from new sales and client retention were both in line with our forecast , while net gains from hiring in our client base exceeded our expectations . Revenue in Q1 2021 increased 5 % to $ 1.3 billion on a 7 % increase in revenue per WSEE , partially offset by an expected 2 % decline in the average number of paid WSEES . " We are pleased with our strong Q1 results and our growth momentum driven by solid sales , client retention and growth in the client base in the face of the ongoing pandemic , " said Paul J. Sarvadi , Insperity chief executive officer and chairman . " The diligent and effective support provided by Insperity employees has helped our resilient client base weather the storm of the pandemic and emerge with confidence in the future . The combination of solid execution and strong demand for our services positions Insperity well for growth acceleration over the balance of the year , as we lay the foundation to return to double - digit unit growth and profitability . " Gross profit increased by 7 % over Q1 2020 to $ 251.4 million . This increase exceeded our forecast , as pricing was above targeted levels and each of our direct costs areas experienced lower than expected cost trends . As for benefit costs , healthcare utilization continued to gradually return to normal coming off of the earlier stages of the pandemic . However , when combined with COVID - 19 related vaccination , testing and treatment costs , overall costs came in slightly below our Q1 budget . Our workers ' compensation program continued to produce favorable results on our ongoing claims management and , to a lesser degree , a favorable impact on the frequency of claims from the recent “ work from home " status of many of our clients ' employees . The payroll tax area also produced gross profit contributions above budget , due to state unemployment tax rates received during Q1 coming in lower than our estimates and the receipt of a $ 5.5 million federal payroll tax refund related to a prior year . Operating expenses increased 13 % over Q1 2020 , however , were flat when excluding performance - based compensation . First quarter 2021 operating costs reflected continued growth investments , including a 7 % increase in the number of trained Business Performance Advisors , initial costs related to our SalesForce implementation and an increase in marketing costs associated with lead generation activity . These investments were partially offset by pandemic - related cost reductions , including reduced travel expenses . Cash outlays during Q1 2021 included the repurchase of 340,000 shares of stock at a cost of $ 29.7 million , cash dividends totaling $ 15.5 million and capital expenditures of $ 12.1 million . We ended the quarter with $ 196.7 million of adjusted cash , cash equivalents and marketable securities , and $ 369.4 million outstanding under our $ 500 million credit facility . " With our strong Q1 results , and positive trends in our growth , pricing and direct costs , we are raising our earnings outlook for the remainder of 2021 , " said Douglas S. Sharp , Insperity senior vice president of finance , chief financial officer and treasurer . " With our solid balance sheet and the expectation for continued strong cash flow , we plan to continue to invest in our growth , while providing attractive returns to our shareholders through our dividend and share repurchase programs . "