1 Rule 424(b)(2) File No. 33-61859 Pricing Supplement No. 12 Dated December 18, 1995 (To Prospectus dated August 31, 1995) Washington Natural Gas Company ------------------------------ Secured Medium-Term Notes, Series C Due at Varying Maturities Principal Amount: $2,000,000 Issue Price: 100% Original Issue Date: December 21, 1995 Maturity Date: December 22, 2025 Interest Rate: 7.20% Agents' Discount or Commission: 0.75% Form: X Book Entry Certificated ----- ----- Redemption: X The Notes cannot be redeemed prior to maturity. ----- The Notes may be redeemed prior to maturity. ----- Initial Redemption Date: N/A The Redemption Price shall initially be N/A % of the principal amount of the Note to be redeemed and shall decline at each anniversary of the Initial Redemption Date by N/A % of the principal amount to be redeemed until the Redemption Price is 100% of such principal amount. Additional terms: The aggregate principal amount of this offering is $5,000,000 and relates only to this Pricing Supplement No. 12. Secured Medium-Term Notes, Series C may be issued by the Company in the aggregate principal amount of up to $150,000,000. To date, including this offering, an aggregate of $100,000,000 Secured Medium-Term Notes, Series C, has been issued. 2 Rule 424(b)(2) File No. 33-61859 Pricing Supplement No. 13 Dated December 18, 1995 (To Prospectus dated August 31, 1995) Washington Natural Gas Company ------------------------------ Secured Medium-Term Notes, Series C Due at Varying Maturities Principal Amount: $10,000,000 Issue Price: 100% Original Issue Date: December 21, 1995 Maturity Date: December 21, 2006 Interest Rate: 6.58% Agents' Discount or Commission: 0.625% Form: X Book Entry Certificated ----- ----- Redemption: X The Notes cannot be redeemed prior to maturity. ----- The Notes may be redeemed prior to maturity. ----- Initial Redemption Date: N/A The Redemption Price shall initially be N/A % of the principal amount of the Note to be redeemed and shall decline at each anniversary of the Initial Redemption Date by N/A % of the principal amount to be redeemed until the Redemption Price is 100% of such principal amount. Additional terms: The aggregate principal amount of this offering is $5,000,000 and relates only to this Pricing Supplement No. 13. Secured Medium-Term Notes, Series C may be issued by the Company in the aggregate principal amount of up to $150,000,000. To date, including this offering, an aggregate of $110,000,000 Secured Medium-Term Notes, Series C, has been issued.