Wash. Rev. Code § 48.94.020
(1) For at least ten years after expiration of each contract of reinsurance transacted by the reinsurance intermediary-broker, the reinsurance intermediary-broker shall keep a complete record for each transaction showing:
(k) When the reinsurance intermediary-broker procures a reinsurance contract on behalf of a licensed ceding insurer:
[ 1993 c 462 s 26.]