Northwest Natural Holding FWP Free writing prospectus

Filing under Rule 433

Registration No. 333-214496

November 29, 2016

NORTHWEST NATURAL GAS COMPANY

SecuredMedium-Term Notes, Series B

(A Series of First Mortgage Bonds)

and

UnsecuredMedium-Term Notes, Series B

Due from One Year to 30 Years from Date of Issue


CUSIP No.: 66765R CB 0 Secured ☒ Unsecured ☐ Principal amount: $75,000,000 Issue price: 100.00% Net proceeds to Company: $74,812,500 Repayable at the option of holder: Yes ☐ No ☒			Stated interest rate: 1.545% Maturity date: December 5, 2018 Settlement date: December 5, 2016 Interest payment dates: June 5 and December 5, commencing June 5, 2017 Regular record dates: May 21 and November 20 Redeemable: Yes ☒ No ☐ In whole ☐
			In whole or in part ☒
Repayment date:		Not applicable
			Fixed redemption price: Yes ☐ No ☒
Repayment price:		Not applicable
			Initial redemption date: Not applicable
Election period:		Not applicable
			Initial redemption price: Not applicable
Selling agents:	Wells Fargo Securities, LLC
	U.S. Bancorp Investments, Inc.		Reduction percentage: Not applicable
	MUFG Securities Americas Inc.
	CIBC Capital Markets		Redemption limitation date: Not applicable

Type of transaction: Agent Wells Fargo Securities, LLC, as to $22,500,000 principal amount of the Notes U.S. Bancorp Investments, Inc., as to $22,500,000 principal amount of the Notes MUFG Securities Americas Inc., as to $15,000,000 principal amount of the Notes CIBC Capital Markets, as to $15,000,000 principal amount of the Notes			Make-whole redemption price: Yes ☒ No ☐ Make-whole spread: 0.10% T+4 Delivery: It is expected that delivery of the notes will be made on or about the date specified above in Settlement Date, which will be the fourth business day (T+4) following the date hereof. UnderRule 15c6-1 under the Securities Exchange Act of 1934, trades in the secondary market generally are required to settle in three business days (T+3), unless the parties to any such trade expressly agree otherwise. Accordingly, the purchasers who wish to trade the notes on the date hereof will be required to specify an alternate settlement cycle at the time of any such trade to prevent a failed settlement. Purchasers of the notes who wish to trade the notes on the date hereof should consult their own advisors.

The issuer has filed a registration statement (including a prospectus) with the Securities and Exchange Commission for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the Securities and Exchange Commission for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the Securities and Exchange Commission’s Web site atwww.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling Wells Fargo Securities, LLC toll-free at 1-800-645-3751 or U.S. Bancorp Investments, Inc. toll-free at 1-877-558-2607.

Filing under Rule 433

Registration No. 333-214496

November 29, 2016

NORTHWEST NATURAL GAS COMPANY

SecuredMedium-Term Notes, Series B

(A Series of First Mortgage Bonds)

and

UnsecuredMedium-Term Notes, Series B

Due from One Year to 30 Years from Date of Issue


CUSIP No.: 66765R CC 8 Secured ☒ Unsecured ☐ Principal amount: $35,000,000 Issue price: 100.00% Net proceeds to Company: $34,781,250 Repayable at the option of holder: Yes ☐ No ☒			Stated interest rate: 3.211% Maturity date: December 5, 2026 Settlement date: December 5, 2016 Interest payment dates: June 5 and December 5, commencing June 5, 2017 Regular record dates: May 21 and November 20 Redeemable: Yes ☒ No ☐ In whole ☐
			In whole or in part ☒
Repayment date:		Not applicable
			Fixed redemption price: Yes ☒ No ☐
Repayment price:		Not applicable
			Initial redemption date: September 5, 2026
Election period:		Not applicable
			Initial redemption price: 100.00%
Selling agents:	Wells Fargo Securities, LLC
	U.S. Bancorp Investments, Inc.		Reduction percentage: Not applicable
	MUFG Securities Americas Inc.
	CIBC Capital Markets		Redemption limitation date: Not applicable

Type of transaction: Agent Wells Fargo Securities, LLC, as to $10,500,000 principal amount of the Notes U.S. Bancorp Investments, Inc., as to $10,500,000 principal amount of the Notes MUFG Securities Americas Inc., as to $7,000,000 principal amount of the Notes CIBC Capital Markets, as to $7,000,000 principal amount of the Notes			Make-whole redemption price: Yes ☒* No ☐ *Through September 4, 2026 Make-whole spread: 0.15% T+4 Delivery: It is expected that delivery of the notes will be made on or about the date specified above in Settlement Date, which will be the fourth business day (T+4) following the date hereof. UnderRule 15c6-1 under the Securities Exchange Act of 1934, trades in the secondary market generally are required to settle in three business days (T+3), unless the parties to any such trade expressly agree otherwise. Accordingly, the purchasers who wish to trade the notes on the date hereof will be required to specify an alternate settlement cycle at the time of any such trade to prevent a failed settlement. Purchasers of the notes who wish to trade the notes on the date hereof should consult their own advisors.

Filing under Rule 433

Registration No. 333-214496

November 29, 2016

NORTHWEST NATURAL GAS COMPANY

SecuredMedium-Term Notes, Series B

(A Series of First Mortgage Bonds)

and

UnsecuredMedium-Term Notes, Series B

Due from One Year to 30 Years from Date of Issue


CUSIP No.: 66765R CD 6 Secured ☒ Unsecured ☐ Principal amount: $40,000,000 Issue price: 100.00% Net proceeds to Company: $39,700,000 Repayable at the option of holder: Yes ☐ No ☒			Stated interest rate: 4.136% Maturity date: December 5, 2046 Settlement date: December 5, 2016 Interest payment dates: June 5 and December 5, commencing June 5, 2017 Regular record dates: May 21 and November 20 Redeemable: Yes ☒ No ☐ In whole ☐
			In whole or in part ☒
Repayment date:		Not applicable
			Fixed redemption price: Yes ☒ No ☐
Repayment price:		Not applicable
			Initial redemption date: June 5, 2046
Election period:		Not applicable
			Initial redemption price: 100.00%
Selling agents:	Wells Fargo Securities, LLC
	U.S. Bancorp Investments, Inc.		Reduction percentage: Not applicable
	MUFG Securities Americas Inc.
	CIBC Capital Markets		Redemption limitation date: Not applicable

Type of transaction: Agent Wells Fargo Securities, LLC, as to $12,000,000 principal amount of the Notes U.S. Bancorp Investments, Inc., as to $12,000,000 principal amount of the Notes MUFG Securities Americas Inc., as to $8,000,000 principal amount of the Notes CIBC Capital Markets, as to $8,000,000 principal amount of the Notes			Make-whole redemption price: Yes ☒* No ☐ *Through June 4, 2046 Make-whole spread: 0.20% T+4 Delivery: It is expected that delivery of the notes will be made on or about the date specified above in Settlement Date, which will be the fourth business day (T+4) following the date hereof. UnderRule 15c6-1 under the Securities Exchange Act of 1934, trades in the secondary market generally are required to settle in three business days (T+3), unless the parties to any such trade expressly agree otherwise. Accordingly, the purchasers who wish to trade the notes on the date hereof will be required to specify an alternate settlement cycle at the time of any such trade to prevent a failed settlement. Purchasers of the notes who wish to trade the notes on the date hereof should consult their own advisors.

Northwest Natural Holding FWPFree writing prospectus