S.D. Codified Laws § 58-5-143
Every insurer domiciled in this state shall file a report with the director disclosing material acquisitions and dispositions of assets or material nonrenewals, cancellations, or revisions of ceded reinsurance programs unless the acquisitions and dispositions of assets or material nonrenewals, cancellations, or revisions of ceded reinsurance programs have been submitted to the director for review, approval, or information purposes pursuant to other provisions of the insurance code, laws, regulations, or other requirements. The report is due within fifteen days after the end of the calendar month in which any of the foregoing transactions occur. One complete copy of the report, including any exhibits or other attachments filed as part thereof, shall be filed with:
SDCL 58-5-143