Oracle Corp.’s founder and CEO didn’t breach their fiduciary duties when negotiating the company’s $9.4 billion acquisition of NetSuite Inc., Vice Chancellor Sam Glasscock III has decided, bringing six years of derivative litigation to a close.

It’s thought to be one of the largest acquisitions to ever be upheld at trial after being challenged by a shareholder. Glasscock determined that while Larry Ellison’s position as a shareholder for both companies made him a conflicted director, he and Oracle CEO Safra Catz, both represented by Latham & Watkins and Young Conaway Stargatt & Taylor, didn’t interfere with the committee that evaluated the deal.