No acquisitions or dispositions of assets need be reported pursuant to RCW 48.44.530 if the acquisitions or dispositions are not material. For purposes of RCW 48.44.530 through 48.44.555, a material acquisition, or the aggregate of any series of related acquisitions during any thirty-day period; or disposition, or the aggregate of any series of related dispositions during any thirty-day period is an acquisition or disposition that is nonrecurring and not in the ordinary course of business and involves more than five percent of the reporting health care service contractor's total assets as reported in its most recent statutory statement filed with the commissioner.