Alaska Stat. § 10.25.125

To determine the members entitled to notice of a meeting of the members or to vote on a matter that is to be submitted to a vote of the members, or for any other proper purpose, the board of directors may fix a date that occurs not more than 30 days before the date of notice or distribution of mail or electronic ballots as the record date for the determination. If a record date is not fixed for the determination of members entitled to notice of a meeting or to vote on a matter, the date on which notice of the meeting or of mail or electronic voting is first distributed is the record date. When a determination of members entitled to vote at a meeting is made, the determination applies until the meeting is adjourned sine die.