A Lawrence-based software company was sold Wednesday to a multinational operation that wants to put its financial-compliance product to work.

Ireland-based Trintech Group this week closed its purchase of Assurity Technologies Inc., 123 W. Eighth St., in a deal valued at up to $5 million – $2 million in cash and another $2 million to $3 million during the next three years, based on sales and revenue performance.

Assurity’s signature software product, AssureNET, is used by corporate officials wanting to reconcile, review and certify their general ledgers to assure auditors and investors that the books comply with the Sarbanes-Oxley Act. The 2002 law established stringent financial reporting requirements for companies doing business in the United States.

Assurity entered the market when Heather and Andrew Lynds founded the company in 2004, and last year recorded sales of $600,000 to the likes of Sabre Holdings (owner of Travelocity), Reuters News Agency and Enterprise Products Partners LP, a $12.4 billion energy company with more than 30,000 miles of pipelines.

They intend to do more – much more.

“Trintech’s global reach, sales and marketing expertise and reputation for secure, reliable performance and quality service is the ideal partner platform to scale and grow the business into new markets globally,” Heather Lynds, Assurity president, said in a statement.

Trintech Group, a provider of transaction reconciliation and payment infrastructure solutions, is buying Lawrence-based Assurity Technologies Inc. for up to million. Assurity employees, from left, Dan Millburn, senior programmer; Andrew Lynds, managing director; Dustin Stejskal, manager of AssureNet; and Shane Petty, quality analyst, work Wednesday in the office, 123 W. Eighth St.

Assurity will remain at the edge of downtown Lawrence, said Andrew Lynds, Assurity’s managing director and Heather’s husband. The company has seven employees and is looking to add to its sales force, going after more of the 5,000 companies in its database that each have annual sales of more than $500 million.

“It’s huge: every publicly traded company, or (that) has publicly traded debt, and any company that wants to do business in the United States that is foreign owned,” he said of the potential market. “If you want to enter the United States market, you have to comply with Sarbanes-Oxley.”

The Lyndses previously had worked for other software companies before deciding to branch out on their own. They settled on Lawrence – Andrew Lynds’ hometown – after the birth of their son, Ethan, who now is 4 and enjoys being around his grandparents.

“We’re staying right here,” Andrew Lynds said. “We love being downtown. We’re not moving.”