Starboard is one of its biggest investors, owning 4.9% of comScore, and had filed a lawsuit earlier this year to make comScore hold a shareholder meeting – which it had failed to do for two years.

Wesley Nichols, Paul Reilly and Bryan Wiener are the new board members approved by Starboard, in place of the shareholder meeting. A further member will be appointed at a later date.

ComScore board chair, Sue Riley, said: "Having now substantially reconstituted the Board and reached an agreement with Starboard, we continue to be laser focused on resolving the company’s pending financial statement restatements and ensuring we deliver value to our shareholders."

Before this announcement, ComScore had recently reduced its board from 12 to five as it also revealed it was further delaying filing its financial statements.