The firm has begun pre-marketing to potential investors ahead of plans to formally launch fundraising efforts during the fourth quarter, one of the people said, asking not to be identified discussing private talks.

Terms, including the size of the fund, aren’t finalized and could still change. A representative for San Francisco-based Hellman & Friedman declined to comment.

Founded in 1984, the firm has offices in San Francisco, New York and London, and focuses on making large equity bets in growing technology companies. Its recent transactions include an investment in Splunk Inc. this month and the purchase of Athenahealth Inc. in conjunction with Bain Capital, a deal that was completed last month.

Hellman & Friedman was also part of a group of private equity firms that agreed to buy medical-supply company Medline Industries Inc. last year for about $34 billion, one of the biggest leveraged buyouts ever.

Source: Bloomberg