Thoma Bravo, a software investment firm, completed its acquisition of, a provider of e-commerce shipping solutions, for approximately $6.6 billion in cash. The acquisition was previously announced on July 9, and’s stockholders approved the transaction on Sept. 30.

Blackstone Credit, credit funds managed by Ares Management, PSP Investments Credit II and Thoma Bravo Credit provided debt financing for the transaction. J.P. Morgan Securities acted as exclusive financial advisor to and Proskauer Rose acted as its legal counsel. Kirkland & Ellis served as legal advisor for Thoma Bravo.

At completion of the acquisition, stockholders were entitled to receive $330 in cash for each share of common stock they owned. common stock has ceased trading on,\ and will be de-listed from the NASDAQ Global Select Market.

“The closing of this transaction marks the next phase of’s growth journey and we are thrilled about the opportunities ahead to continue driving our global strategy to capture the expanding e-commerce shipping market and extend our position as the leading global multi-carrier e-commerce shipping software company,” Ken McBride, chairman and CEO of, said. “Leveraging Thoma Bravo’s extensive software and operational expertise, we seek to build on our best-in-class software and technology solutions to provide an even better experience for our customers. I am so grateful to our employees for their hard work that has contributed to’s success, and I know this is only the beginning.”

“As the e-commerce landscape continues to evolve, we look forward to partnering with Ken and his team to accelerate’s position as the leader in e-commerce shipping software solutions,” Holden Spaht, a managing partner at Thoma Bravo, said. “ has been a pioneer in the industry since it first introduced online postage and we look forward to supporting the company’s growth ambitions as it continues to drive cutting edge product innovation in the large and dynamic e-commerce market.”