0001013762-23-003107 POSASR 1 20231011 20231011 20231011 Magellan Midstream Partners, L.P. 0001126975 4610 731599053 DE 1231 POSASR 33 333-253266 231320473 ONE WILLIAMS CENTER, MD 28-1 TULSA OK 74172 918 574 7000 ONE WILLIAMS CENTER, MD 28-1 TULSA OK 74172 MAGELLAN MIDSTREAM PARTNERS, L.P. 20190718 MAGELLAN MIDSTREAM PARTNERS LP 20030827 WILLIAMS ENERGY PARTNERS L P 20001024 POSASR 1 ea186356-posasr_magellanmid.htm POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-3