Shareholder activists on Wednesday urged Google parent Alphabet Inc. to break itself up before regulators force the world's biggest internet ad seller to split into different pieces.

SumOfUs, a U.S.-based group that aims to curb the growing power of corporations, presented the proposal at Alphabet's annual shareholder meeting at an auditorium at the company's offices in Sunnyvale, California.

Sonamtso, a campaigns director for Students for a Free Tibet who goes by one name, said at the meeting on behalf of SumOfUs that Alphabet is too big to manage.