S.D. Codified Laws § 58-5A-35
No insurer subject to this chapter may pay any extraordinary dividend or make any other extraordinary distribution to its stockholders until thirty days after the director has received notice of the declaration thereof and has approved or has not disapproved the payment within the thirty-day period. For purposes of this section, an extraordinary dividend or distribution is any dividend or distribution which, together with other dividends or distributions made within the preceding twelve months, exceeds, as of December thirty-first of the year immediately preceding, the greater of ten percent of the insurer's surplus to policyholders, or the net gain from operations of the insurer if the insurer is a life insurer, or the net income if the insurer is not a life insurer but does not include pro rata distribution of any class of the insurer's own securities. For the purpose of this section, net gain from operations and net income includes net realized capital gains in an amount not to exceed twenty percent of net unrealized capital gains. An insurer may declare an extraordinary dividend or distribution which is conditional upon the director's approval thereof, and the declaration shall confer no rights upon stockholders until the director has approved or has not disapproved the payment within the thirty-day period.
SDCL 58-5A-35