Financial software developer BlackLine Systems has received an investment from a fund of Silver Lake Sumero, a Sand Hill Road technology investment firm.

Terms of the deal between BlackLine, in Woodland Hills, and Silver Lake Sumeru, in Menlo Park, were not disclosed. However, a report by Reuters put the Silver Lake investment at more than $200 million and characterized it as a majority stake.

Iconiq Capital, a San Francisco-based multi-family office and merchant bank for a group of influential families, is also a partner in the transaction.

Therese Tucker will remain as chief executive of BlackLine, the company she started in 2001 after retiring as chief technology officer at SunGard, a software and technology services company in Wayne, Pa.

“Because of BlackLine’s strong leadership position in the market and impressive year-over-year growth, we had a choice of investment partners from a number of reputable firms,” said Tucker. “We selected Silver Lake Sumeru because we felt that their culture and values closely aligned with BlackLine’s.”

Silver Lake Sumeru invests in middle market technology companies with established business models. Firm principal Jason Babcoke and managing directors Hollie Moore Haynes and John Brennan will join the BlackLine board of directors.