EXHIBIT 21.1 TRANSATLANTIC HOLDINGS, INC. SUBSIDIARIES OF REGISTRANT % OF VOTING SECURITIES OWNED BY ITS JURISDICTION OF IMMEDIATE NAME OF CORPORATION INCORPORATION PARENT ------------------- ------------- ------ Transatlantic Reinsurance Company........................... New York, U.S.A. 100% Putnam Reinsurance Company.............................. New York, U.S.A. 100%* Trans Re Zurich......................................... Zurich, Switzerland 100%* Transatlantic Re (Argentina) S.A........................ Argentina 100%* Transatlantic Re (Brasil) Ltda.......................... Brazil 100%* - -------------- * The common stock is owned 100% by Transatlantic Reinsurance Company.