California Code, Insurance Code - INS § 7047

The meeting called for the purpose of transformation, shall be preceded by a written or printed notice of the meeting and its purpose addressed to each policyholder of record on the date of the notice, mailed at least 30 days before that date fixed for the meeting.  The presence in person or by proxy of 5 percent of the policyholders entitled to vote shall constitute a quorum unless a higher percentage is required by the bylaws or articles of incorporation of the insurer.