Paycom Software, Inc. (NYSE:PAYC) (“Paycom”), a leading provider of comprehensive, cloud-based human capital management software delivered as Software-as-a-Service, announced today that the underwritten secondary offering (the “Offering”) of 8,000,000 shares of its common stock by Welsh, Carson, Anderson & Stowe X, L.P. and WCAS Capital Partners IV, L.P. (collectively, “WCAS”), each of its executive officers and certain other selling stockholders (collectively, the “Selling Stockholders”). The price to the public in the Offering is $36.25 per share. Barclays is acting as the underwriter for the Offering. The Offering is expected to close on or about May 20, 2015, subject to customary closing conditions. Paycom will not receive any proceeds from the Offering.

A copy of the prospectus and prospectus supplement related to the Offering may be obtained from Barclays Capital Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, or e-mail Barclaysprospectus@broadridge.com, or telephone 1 (888) 603-5847.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

Paycom has filed a registration statement, including a prospectus and a prospectus supplement, with the Securities and Exchange Commission (the “SEC”) for the Offering to which this communication relates. Before you invest, you should read the prospectus supplement, the accompanying prospectus, the registration statement and the other documents Paycom has filed with the SEC for more complete information about Paycom and the Offering. You may get these documents for free by visiting the SEC website at www.sec.gov.

About Paycom

As a leader in payroll and HR technology, Oklahoma City-based Paycom redefines the human capital management industry by allowing companies to effectively navigate a rapidly changing business environment. Its cloud-based software solution is based on a core system of record maintained in a single database for all human capital management functions, providing the functionality that businesses need to manage the complete employment lifecycle, from recruitment to retirement. Paycom serves businesses of all sizes and in every industry. As one of the leading human capital management providers, Paycom serves clients in all 50 states from offices across the country.