million net draw-down on the Facility. Prior year interest expense of $3.7 million included interest expense related to the Debenture and interest expense related to the Company's cumulative $58.0 million net draw-down on the Facility (see Note 13 - Debt).
Metal Sales. For the three months ended September 30, 2025 and 2024, the gain on metal sales was $2.2 million and $0.9 million, respectively, and related to excess ounces that were purchased from the Peak Gold JV that were not delivered into the hedges and sold to the derivative counterparties and hedged volumes sold at spot with obligation to repurchase at fixed price before delivering into hedges. The ounces sold during the three months ended September 30, 2025 were 16,669 with an average spot price of $3,647 compared to 12,850 ounces with an average spot price of $2,521 for the three-month period ended September 30, 2024.
Loss on Derivative Contracts. Loss on derivative contracts for the three months ended September 30, 2025 was comprised of unrealized and realized loss of $14.4 million and $15.9 million, respectively, compared to $22.9 million and $5.9 million, respectively, for the three months ended September 30, 2024. The variance is generated from the valuation of the derivative contracts which was affected by the increase of the spot price and the corresponding impact in the forward curves used to value them and the deliveries completed towards them. The Company delivered 11,900 gold ounces into the derivative contracts for the three-month period ended September 30, 2025. The Company delivered 14,826 gold ounces into the derivative contracts for the three-month period ended September 30, 2024 (see Note 14 - Derivative and Hedging Activities).
Unrealized loss on marketable securities. For the three months ended September 30, 2025, the unrealized loss on marketable securities was $1.0 million and related to valuation of the Company's investment in Onyx, compared to $0.2 million for the three months ended September 30, 2024.
Nine months Ended September 30, 2025 Compared to Nine months Ended September 30, 2024
Claim Rentals Expense. Claim rental expense primarily consists of State of Alaska rental payments and costs incurred to record annual labor documents. For the nine months ended September 30, 2025 and 2024, claim rental expense were $0.3 million and $0.4 million, respectively.
Exploration Expense. Exploration expense for the nine months ended September 30, 2025 was $3.5 million compared to $3.0 million for the nine months ended September 30, 2024. Current period exploration expense primarily relates to the permitting process for the underground exploration drift and baseline environmental work at the Johnson Tract Project. The prior period exploration expense related to a 3,000-meter surface drill program at the Johnson Tract Project.
General and Administrative Expense. General and administrative expense for the nine months ended September 30, 2025 and 2024 was $8.1 million and $7.3 million, respectively. The Company’s general and administrative expense primarily relates to professional fees, regulatory fees, payroll and stock-based compensation expense. The increase is mainly driven by expenditures carried for marketing and investor relations, increased legal costs and professional fees and the Facility restructure.
Income from Equity Investment in the Peak Gold JV. The income from the Company’s equity investment in the Peak Gold JV for the nine months ended September 30, 2025 was $79.2 million compared to income of $27.7 million for the nine months ended September 30, 2024. The Manh Choh Project commenced production in July 2024, which generated income for the second half of 2024 and the three quarters of 2025.
Interest Expense. For the nine months ended September 30, 2025, interest expense was $6.5 million and primarily related to the Debenture and interest expense related to the Company’s cumulative $23.1 million net draw-down on the Facility. Prior year interest expense of $8.6 million included interest expense related to the Debenture and interest expense related to the Company's cumulative $58.0 million net draw-down on the Facility (see Note 13 - Debt).
Metal Sales. For the nine months ended September 30, 2025 and 2024, the gain on metal sales was $4.3 million and $0.9 million, respectively, and related to excess ounces that were purchased from the Peak Gold JV that were not delivered into the hedges and sold to the derivative counterparties and hedged volumes sold at spot with obligation to repurchase at fixed price before delivering into hedges. The ounces sold during the nine months ended September 30, 2025 were 51,574 with an average spot price of $3,300, compared to 12,850 ounces with an average spot price of $2,521 for the nine-month period ended September 30, 2024.
Loss on Derivative Contracts. Loss on derivative contracts for the nine months ended September 30, 2025 was comprised of unrealized and realized loss of $57.0 million and $26.7 million, respectively, compared to $51.1 million and $6.0 million, respectively, for the nine months ended September 30, 2024. The variance is generated from the valuation of the derivative contracts which was affected by the increase of the spot price and the corresponding impact in the forward curves used to value them and the deliveries completed towards them. The Company delivered 23,839 gold ounces into the derivative contracts for the nine-month period ended September 30, 2025. The Company delivered 14,826 gold ounces into the derivative contracts for the three-month period ended September 30, 2024 (see Note 14 - Derivative and Hedging Activities).
Unrealized gain/(loss) on marketable securities. For the nine months ended September 30, 2025, the unrealized gain on marketable securities was $5.7 million and related to valuation of the Company's investment in Onyx, compared to a $0.2 million loss for the nine months ended September 30, 2024.