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DERIVATIVE INSTRUMENTS
 9 Months Ended
Sep. 30, 2026
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
DERIVATIVE INSTRUMENTS DERIVATIVE INSTRUMENTS:
CNX may enter into interest rate swap agreements to manage its exposure to interest rate volatility. These swaps change the variable-rate cash flow exposure on the debt obligations to fixed cash flows. The change in fair value of the interest rate swap agreements is accounted for on a mark-to-market basis with the changes in fair value recorded in current period earnings. There were no interest rate swap agreements entered into as of September 30, 2026.

CNX enters into financial derivative instruments (over-the-counter swaps) to manage its exposure to natural gas and NGL price fluctuations. Commodity hedges are accounted for on a mark-to-market basis with changes in fair value recorded in current period earnings.

CNX is exposed to credit risk in the event of non-performance by counterparties. The creditworthiness of counterparties is subject to continuing review. The Company has not experienced any issues of non-performance by derivative counterparties.

None of the Company's counterparty master agreements currently require CNX to post collateral for any of its positions. However, as stated in the applicable counterparty master agreements, if CNX's obligations with one of its counterparties cease to be secured on the same basis as similar obligations with the other lenders under the CNX Credit Facility, CNX would have to post collateral for instruments in a liability position in excess of defined thresholds. All of the Company's derivative instruments are subject to master netting arrangements with our counterparties. CNX recognizes all financial derivative instruments as either assets or liabilities at fair value in the Consolidated Balance Sheets on a gross basis.
 
Each of the Company's counterparty master agreements allows, in the event of default, the ability to elect early termination of outstanding contracts. If early termination is elected, CNX and the applicable counterparty would net settle all open hedge positions.

The total notional amounts of CNX's derivative instruments were as follows:
September 30,December 31,Forecasted to
20262025Settle Through
Natural Gas Commodity Swaps (Bcf)761.2 929.8 2029
Natural Gas Basis Swaps (Bcf)525.0 585.5 2029
NGL Commodity Swaps (Mbbls)709.8180.02027
The gross fair value of CNX's derivative instruments was as follows:
September 30, December 31,
20262025
Current Assets:
  Commodity Derivative Instruments:
     Natural Gas Commodity Swaps$322,615 $74,064 
     NGL Commodity Swaps53 1,730 
     Natural Gas Basis Swaps30,627 30,274 
Total Current Assets$353,295 $106,068 
Other Non-Current Assets:
  Commodity Derivative Instruments:
     Natural Gas Commodity Swaps$85,791 $117,524 
     Natural Gas Basis Swaps19,220 16,872 
Total Other Non-Current Assets$105,011 $134,396 
Current Liabilities:
  Commodity Derivative Instruments:
     Natural Gas Commodity Swaps$38,897 $323,169 
     NGL Commodity Swaps4,594 — 
     Natural Gas Basis Swaps66,510 54,776 
Total Current Liabilities$110,001 $377,945 
Non-Current Liabilities:
  Commodity Derivative Instruments:
     Natural Gas Commodity Swaps$55,779 $101,387 
     Natural Gas Basis Swaps38,967 56,981 
Total Non-Current Liabilities$94,746 $158,368 
The effect of commodity derivative instruments on the Company's Consolidated Statements of Income was as follows:
For the Three Months EndedFor the Nine Months Ended
September 30, September 30,
2026202520262025
Realized Gain (Loss) on Commodity Derivative Instruments:
Natural Gas Commodity Swaps$45,947 $4,061 $(101,545)$(125,872)
Natural Gas Basis Swaps6,833 17,591 (21,748)3,633 
NGL Commodity Swaps(328)728 (417)(473)
Total Realized Gain (Loss) on Commodity Derivative Instruments52,452 22,380 (123,710)*(122,712)**
Unrealized Gain (Loss) on Commodity Derivative Instruments:
Natural Gas Commodity Swaps125,983 234,645 474,116 154,522 
Natural Gas Basis Swaps(11,517)(125,257)(4,205)(9,292)
NGL Commodity Swaps(6,355)(73)(5,321)2,078 
Total Unrealized Gain on Commodity Derivative Instruments108,111 109,315 464,590 147,308 
Gain (Loss) on Commodity Derivative Instruments:
Natural Gas Commodity Swaps171,930 238,706 372,571 28,650 
Natural Gas Basis Swaps(4,684)(107,666)(25,953)(5,659)
NGL Commodity Swaps(6,683)655 (5,738)1,605 
Total Gain on Commodity Derivative Instruments$160,563 $131,695 $340,880 $24,596 
*Includes $27,264 of commodity derivatives that have been settled but not received and $834 settled but not paid at September 30, 2026, and excludes $58,387 of commodity derivatives that were settled but not paid at December 31, 2025.
**Includes $18,362 of commodity derivatives that have been settled but not received at September 30, 2025, and excludes $2,309 of commodity derivatives that were settled but not received and $23,212 that were settled but not paid at December 31, 2024.

The Company also enters into fixed price natural gas sales agreements that are satisfied by physical delivery. These physical commodity contracts qualify for the normal purchases and normal sales exception and are not subject to derivative instrument accounting.