Oregon Revised Statutes Insurance § 734.390

(1) If upon the granting of an order of liquidation under this chapter, or at any time thereafter during the liquidation proceeding, the insurer shall not be clearly solvent, the court shall, after such notice and hearing as it considers proper, make an order declaring the insurer to be insolvent. Thereupon, regardless of any prior notice which may have been given to creditors, the Director of the Department of Consumer and Business Services shall notify all persons who may have claims against the insurer and who have not filed proper proofs thereof, to present the same to the director, at a place specified in the notice, within four months from the date of the entry of such insolvency order or within such longer time as the court shall prescribe. The last day for filing of proofs of claims shall be specified in the notice. The notice shall be given in a manner determined by the court.

(2) Proofs of claims may be filed subsequent to the date specified, but no such claim shall share in the distribution of the assets until all allowed claims, proofs of which have been filed on or before such date, have been paid in full.