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Bellevue-based Nintex, which provides process management and automation software for companies and governments, today announced it has acquired Atlanta-based AssureSign, an electronic signature pioneer and digital transaction management (DTM) software provider.

Terms of the deal are not being released.

It’s the second acquisition for Nintex since October, when it acquired Bellevue-based K2 Software Inc., a provider of digital process automation (DPA) software solutions. 

The AssureSign acquisition allows Nintex to meet customer demand for a native eSignature capability within its process platform, according to a news release announcing the deal.

“We are excited to welcome eSignature leader AssureSign and its customers to our burgeoning Nintex community,” Nintex CEO Eric Johnson said in the release. “AssureSign’s automation technologies, like with our previous acquisitions, are well architected and will be integrated within the Nintex Process Platform over the months ahead to bring powerful and easy-to-use digital signatures to every organization that is leveraging Nintex to improve the way people work.”

AssureSign CEO David Brinkman added, “Our cultures are both perfectly centered around our combined passion for customer success and we look forward to rapidly integrating AssureSign’s eSignatures with Nintex’s digital workflows and forms, document automation, and more.”

AssureSign serves more than 100,000 active monthly users in areas including regulated industries like insurance and financial services, the release said. The company boasts more than 500 customers, executing more than 800 million eSignatures worldwide since its founding. Its technology allows organizations to quickly and securely send documents for signature to any device, at any time, and from anywhere via customized experiences.

AssureSign is Nintex’s fourth acquisition since Thoma Bravo became the company’s majority investor in early 2018. Nintex said it’s one of the world’s largest privately held process automation software vendors, serving more than 10,000 customers, including more than 50 percent of the Fortune 500, and generates more than $250 million in annual sales.