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Thompson Street Capital acquires .ZIP format pioneer PKWARE

PKWARE, formed in 1986, developed the .ZIP file format. Its data security platform is called Smartcrypt. 

Thompson Street Capital Partners acquired PKWARE Inc, which provides software data security. Terms of the deal were not disclosed. PKWARE, formed in 1986, developed the .ZIP file format. Its data security platform is called Smartcrypt.

Press Release

Thompson Street Capital Partners (TSCP), a private equity firm based in St. Louis, announced today that they have acquired PKWARE Inc. (PKWARE), a Milwaukee, Wisconsin-based provider of data security software solutions. AGC Partners served as the exclusive financial advisor to PKWARE on this transaction. Terms of the transaction were not disclosed.

Founded in 1986, PKWARE ( created the .ZIP file format and provides leading compression, encryption and data security platform solutions to highly regulated enterprises. The Company’s flagship data security platform, Smartcrypt, enables companies to protect sensitive data, meet compliance and regulatory requirements and manage risk.

Brandon Muirhead, Director, TSCP said, “Enterprises have a critical need to protect sensitive data – and one that is rapidly accelerating – as threat vectors expand and cyberattacks become more sophisticated. PKWARE is uniquely positioned as a trusted provider of best-in-class, automated data security solutions.” Mr. Muirhead added, “We are thrilled to partner with the Company to support the growth of the Smartcrypt product.”

Bob Dunn, Managing Director, TSCP added, “For decades PKWARE has provided mission-critical solutions for thousands of customers. We are very excited to help accelerate the Company’s growth at such a pivotal time for data security.”

About PKWARE Inc.

PKWARE ( is a provider of encryption and compression software, offering data security solutions incorporating data discovery, classification, and protection in automated, policy-driven workflows.

About Thompson Street Capital Partners
Thompson Street Capital Partners ( is a St. Louis-based private equity firm focused on investing in founder-led middle market businesses in the healthcare and life science services, software and technology services, and business services and engineered products sectors. Founded in 2000, the firm has acquired more than 100 companies and has managed more than $2.6 billion in equity. TSCP partners with management teams to increase value by accelerating growth, both organically and via acquisitions.