PIEDMONT NATURAL GAS COMPANY, INC. $400,000,000 3.35% SENIOR NOTES DUE 2050 UNDERWRITING AGREEMENTUnderwriting Agreement • May 21st, 2020 • Piedmont Natural Gas Co Inc • Natural gas distribution • New York
Mizuho Securities USA LLC Morgan Stanley & Co. LLC PNC Capital Markets LLC RBC Capital Markets, LLC SMBC Nikko Securities America, Inc. U.S. Bancorp Investments, Inc.
PIEDMONT NATURAL GAS COMPANY, INC. AND THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS TRUSTEE tenth SUPPLEMENTAL INDENTURE DATED AS OF May 21, 2020 SUPPLEMENT TO INDENTURE DATED AS OF APRIL 1, 1993Tenth Supplemental Indenture • May 21st, 2020 • Piedmont Natural Gas Co Inc • Natural gas distribution • New York
