CNX ESG Performance Scorecard

Review of Scorecard Data

CNX obtained limited assurance from Keramida, Inc., a WBE certified global sustainability and EHS services firm, for certain 2025 quarterly ESG data presented on this ESG Performance Scorecard, including Scope 1 and Scope 2 greenhouse gas emissions, air emissions, water, and waste data. CNX’s Internal Audit & Advisory Services team performed limited procedures over all other quarterly data presented for 2025 in the scorecard as part of its advisory role in assessing ESG-related processes and disclosures. The procedures performed were limited in scope and did not constitute an audit or assurance engagement; thus, no assurance is expressed or implied. Note that certain financial data included in the scorecard is also subject to internal control procedures that are required for the Sarbanes-Oxley Act Section 302 certifications included in our SEC filings.

Units Q4 23 Q1 24 Q2 24 Q3 24 Q4 24 Q1 25 Q2 25 Q3 25 Q4 25
COMPANY INFORMATION
Workforce1
Total employees Count 470 469 464 462 458 388 389 393 395
Full-time employees Count 467 465 459 457 454 384 384 388 390
Part-time employees Count 3 4 5 5 4 4 5 5 5
Contractors Full-Time Equivalent (FTE) 1,605 1,935 1,655 1,666 1,557 1,582 1,419 1,485 1,687
Revenue
Natural gas, NGL, and oil revenue Billions $0.33 $0.33 $0.24 $0.26 $0.36 $0.55 $0.49 $0.40 $0.48
Production Volumes
Total production Bcfe 147 140 134 135 142 147 167 161 152
Natural gas Bcf 134 129 121 121 126 135 156 149 140
Liquids2 Bcfe 13 11 13 14 16 12 11 12 12
Share Buybacks
Purchases of common stock Millions $113.6 $48.3 $45.6 $63.6 $21.1 $126.2 $115.4 $184.2 $102.3
Purchases of common stock Shares 5,273,496 2,384,994 1,845,354 2,345,262 600,064 4,186,185 3,658,251 6,052,201 2,973,072
HEALTH & SAFETY
Workhours
Total hours worked Hours 1,042,554 1,245,219 1,085,601 1,085,896 1,013,895 1,035,318 922,151 958,573 1,052,896
Employee Hours 208,079 239,211 224,858 219,642 203,997 212,781 184,042 186,193 175,734
Contractor Hours 834,475 1,006,008 860,743 866,254 809,898 822,537 738,109 772,380 877,162
Worker Safety3
Fatalities from work related
injuries – employees		 Count – – – – – – – – –
Fatalities from work related
injuries – contractors		 Count – – – – – – – – –
Total recordable incidents – total Count 4 3 – 5 4 7 5 5 5
Total recordable incident rate
(TRIR) – total		 Count/(Hours worked/200,000) 0.77 0.48 – 0.92 0.79 1.35 1.08 1.04 0.95
Total recordable incidents – employee Count 2 – – – – – – – –
Total recordable incident rate
(TRIR) – employee		 Count/(Hours worked/200,000) 1.92 – – – – – – – –
Total recordable
incidents – contractor		 Count 2 3 – 5 4 7 5 5 5
Total recordable incident rate
(TRIR) -contractor		 Count/(Hours worked/200,000) 0.48 0.60 – 1.15 0.99 1.70 1.35 1.29 1.14
Lost time incidents – total Count 1 – – – 1 – 1 1 2
Lost time incident rate
(LTIR) – total		 Count/(Hours worked/200,000) 0.19 – – – 0.20 – 0.22 0.21 0.38
Lost time incidents – employee Count 1 – – – – – – – –
Lost time incident rate
(LTIR) – employee		 Count/(Hours worked/200,000) 0.96 – – – – – – – –
Lost time incidents – contractor Count – – – – 1 – 1 1 2
Lost time incident rate
(LTIR) – contractor		 Count/(Hours worked/200,000) – – – – 0.25 – 0.27 0.26 0.46
Days away, restricted or transfer
(DART) – total		 Count 1 – – 1 3 4 2 2 2
DART rate – total Count/(Hours worked/200,000) 0.19 – – 0.18 0.59 0.77 0.43 0.42 0.38
Days away, restricted or
transfer – employee		 Count 1 – – – – – – – –
DART rate – employee Count/(Hours worked/200,000) 0.96 – – – – – – – –
Days away, restricted or
transfer – contractor		 Count – – – 1 3 4 2 2 2
DART rate – contractor Count/(Hours worked/200,000) – – – 0.23 0.74 0.97 0.54 0.52 0.46
Motor vehicle incident – employee4 Count – – – – – – – – –
Motor vehicle incident rate –
employee		 Count/(Miles driven/1,000,000) – – – – – – – – –
EMISSIONS
Air Emissions5
Nitrogen oxides (NOx) Metric tons 123 144 123 110 115 150 99 95 164
Sulfur oxides (SOx) Metric tons 1 1 1 1 1 1 0 0 0
Volatile organic compounds (VOCs) Metric tons 159 140 128 113 102 149 157 165 141
Hazardous air pollutants (HAPs) Metric tons 24 30 30 29 31 23 23 24 23
Particulate matter (PM10) Metric tons 10 10 9 9 9 10 8 9 10
Carbon monoxide (CO) Metric tons 56 66 53 48 51 68 49 47 61
Formaldehyde Metric tons 5 5 5 5 4 5 5 4 5
GHG Emissions5, 6, 7
Scope 1 GHG emissions (CO2e) Metric tons CO2e 126,174 133,593 123,535 116,211 111,040 195,055 210,020 236,188 226,554
Production segment Metric tons CO2e 27,656 35,886 29,524 23,745 20,853 77,517 61,817 60,416 75,867
Gathering & Boosting (G&B)
segment		 Metric tons CO2e 98,518 97,707 94,011 92,466 90,187 117,538 148,203 175,772 150,687
CO2e Intensity – Production segment
Shale Emissions/Production 0.04% 0.05% 0.04% 0.03% 0.02% 0.06% 0.03% 0.03% 0.05%
CBM Emissions/Production 0.08% 0.08% 0.08% 0.08% 0.08% 0.57% 0.59% 0.57% 0.60%
Other Emissions/Production 0.01% 0.01% 0.01% 0.01% 0.01% 0.29% 0.31% 0.36% 0.42%
Total Production Segment Emissions/Production 0.04% 0.05% 0.04% 0.03% 0.03% 0.09% 0.06% 0.06% 0.09%
CO2e Intensity – G&B segment
Shale Emissions/Throughput 0.12% 0.11% 0.11% 0.10% 0.10% 0.11% 0.09% 0.09% 0.10%
CBM Emissions/Throughput 0.13% 0.11% 0.11% 0.10% 0.09% 0.15% 0.66% 1.07% 0.79%
Total G&B Segment Emissions/Throughput 0.12% 0.11% 0.11% 0.10% 0.10% 0.11% 0.13% 0.15% 0.14%
Scope 1 GHG emissions (Methane) Metric tons CH4 1,253 1,142 848 734 579 3,339 4,519 5,395 4,465
Production Segment Metric tons CH4 582 566 429 323 209 1,806 1,741 1,710 1,663
G&B Segment Metric tons CH4 671 576 419 411 369 1,533 2,777 3,685 2,802
Methane Intensity – Production segment
Shale Emissions/Production 0.02% 0.02% 0.01% 0.01% 0.00% 0.02% 0.01% 0.01% 0.01%
CBM Emissions/Production 0.07% 0.07% 0.07% 0.07% 0.07% 0.45% 0.45% 0.44% 0.47%
Other Emissions/Production 0.01% 0.01% 0.01% 0.01% 0.01% 0.29% 0.31% 0.36% 0.42%
Total Production Segment Emissions/Production 0.02% 0.02% 0.02% 0.01% 0.01% 0.06% 0.05% 0.05% 0.05%
Methane Intensity – G&B segment
Shale Emissions/Throughput 0.01% 0.01% 0.01% 0.01% 0.01% 0.03% 0.03% 0.02% 0.02%
CBM Emissions/Throughput 0.11% 0.09% 0.09% 0.09% 0.08% 0.14% 0.64% 1.06% 0.78%
Total G&B Segment Emissions/Throughput 0.02% 0.02% 0.01% 0.01% 0.01% 0.04% 0.07% 0.09% 0.07%
Scope 2 GHG emissions Metric tons CO2e 87,887 69,927 69,098 70,543 67,966 75,303 72,419 75,399 71,083
Production segment Metric tons CO2e 4,244 1,493 1,422 1,313 1,242 1,289 1,065 1,131 1,047
G & B segment Metric tons CO2e 83,644 68,434 67,676 69,229 66,724 74,014 71,355 74,269 70,035
Scope 3 GHG emissions8 Metric tons CO2e 7,822,502 7,468,026 7,102,533 7,116,351 7,478,086 7,858,696 8,955,179 8,596,140 8,102,006
Flaring intensity9 Volume sent to flare/production 0.06% 0.06% 0.06% 0.06% 0.06% 0.06% 0.05% 0.05% 0.05%
LDAR program surveys10 Count 244 217 374 324 349 362 365 426 381
ENVIRONMENT
Water11
Total water brought into CNX system Thousand barrels 2,698 4,424 5,519 5,857 4,824 7,432 3,238 2,156 6,410
CNX produced water Thousand barrels 2,203 2,062 1,897 2,155 2,104 2,271 2,475 2,036 2,035
3rd party produced water Thousand barrels 242 389 919 3,256 1,671 254 312 12 858
Fresh water withdrawn Thousand barrels 253 1,973 2,703 447 1,049 4,907 451 108 3,517
Water consumed in operations12 Thousand barrels 1,581 3,079 3,984 3,500 3,662 5,448 316 357 5,765
Total water managed and
removed from CNX system		 Thousand barrels 1,117 1,345 1,535 2,357 1,162 1,983 2,922 1,800 644
Reused in 3rd party operations Thousand barrels 766 995 1,138 1,960 819 1,648 2,436 1,437 330
Disposed offsite13 Thousand barrels 351 351 397 398 343 335 486 362 315
Fresh water withdrawn intensity14 Fresh water
withdrawn/Total production		 0.01 0.08 0.11 0.02 0.04 0.18 0.01 0.00 0.13
Total water consumed intensity15 Water Consumed/Total
production		 0.06 0.12 0.17 0.15 0.14 0.20 0.01 0.01 0.21
Water reused rate16 Produced water reused/Total
produced brought in		 86% 86% 86% 93% 91% 87% 83% 82% 89%
Water disposed offsite rate17 Produced water disposed
offsite/Total water brought in		 13% 8% 7% 7% 7% 5% 15% 17% 5%
Waste Management
Hazardous waste – solids Tons – – – – – – – – –
Hazardous waste – liquids Barrels – – – – – – – – –
Non-hazardous waste – solids Tons 23,743 30,553 15,607 10,510 11,306 14,373 9,317 12,324 19,344
Non-hazardous waste – liquids Barrels 4,262 2,982 2,724 1,960 1,648 1,236 810 1,039 1,030
Solid waste sent to landfill Tons 23,743 30,553 15,607 10,510 11,306 14,373 9,317 12,324 19,344
Environmental Management
Notices of violation18, 19 Count 6 7 7 2 6 4 6 2 5
Environmental penalty payments Millions $0.1 $0.0 $0.2 $0.0 $0.0 $0.0 $0.0 $0.0 $0.0
Reportable pipeline incidents20 Count – – – – – 1 – – –
Spills21, 22
Hydrocarbon releases Count – 2 – – 1 1 – – –
Hydrocarbon releases Barrels – 2 – – 4 6 – – –
Non-hydrocarbon releases Count 5 3 3 – 1 1 2 – 1
Non-hydrocarbon releases Barrels 55 227 1,403 – 579 12 75 – 1
Spill intensity23 Releases / (CNX and Third Party
Produced Water)*100,000		 2.2 8.3 49.5 – 14.1 0.4 1.9 – 0.0
  1. Employee count based on active employment status as of year-end. Contractor Full-Time Equivalent (FTE) based on 2,080 workhours per year.
  2. NGLs, oil and condensate are converted to Mcfe at the rate of one barrel equals six Mcf based upon the approximate relative energy content of oil and natural gas.
  3. Total recordable incident rate (TRIR), lost time incident rate (LTIR), and days away, restricted or transfer (DART) rate, are calculated per 200,000 hours worked. The reportable motor vehicle incident rate is calculated per 1,000,000 miles driven.
  4. Motor vehicle incident is any incident involving a licensed motor vehicle, which results in an OSHA recordable injury.
  5. Includes total emissions from CNX Production and Gathering and Boosting segments based on EPA’s Subpart W methodology, consolidated and reported under the operational control approach.
  6. Greenhouse global warming potential for CO2e calculations are based on IPCC Fourth Assessment (AR4-100 year) through 2023. Greenhouse global warming potential for CO2e calculations are based on IPCC Fifth Assessment (AR5-100 year) for 2024 and forward. GHG and Methane intensities are calculated using applicable emissions divided by throughput for Production and Gathering and Boosting segments, respectively.
  7. All emissions metrics, including intensity calculations follow the applicable EPA Greenhouse Gas Reporting Program methodologies under Subpart W – Petroleum and Natural Gas Systems, then in effect for each respective reporting year 2025 reflects Subpart W revisions mandated by Section 136(h) of the Inflation Reduction Act.
  8. Scope 3 emissions are indirect emissions from the use of our sold product and are calculated utilizing natural gas combustion emission factors from Subpart C of EPA’s Greenhouse Gas Reporting Program. In order to provide more transparency and with the goal of aiding more standard and consistent GHG emission disclosures that enable true full lifecycle emissions profile comparisons across industries, CNX is committed to providing additional disclosures on downstream as well as upstream Scope 3 emissions in future performance scorecards.
  9. Flaring intensity based on total volume of natural gas produced.
  10. Leak detection and repair (LDAR) surveys that meet minimum federal and state regulations.
  11. Amounts include water that has been brought into the CNX system and consumed by gas operations; excludes amounts based on engineering estimates that were transported across but not consumed within the system. Prior year amounts have been adjusted to reflect this methodology.
  12. Water consumed in operations primarily relates to hydraulic fracturing, adjusted for minor changes to storage.
  13. Includes produced water and flowback fluids sent to injection wells and other disposal facilities.
  14. Fresh water withdrawn intensity equals fresh water withdrawn divided by total company gross operated production (Mboe).
  15. Total water consumed intensity equals water consumed in operations divided by total company gross operated production (Mboe).
  16. Water recycled/reused rate equals the sum of produced water consumed in operations plus produced water sent to third-parties for reuse divided by total produced water brought into the CNX system.
  17. Water disposed offsite rate equals the amount sent to offsite disposal divided by total water brought into the CNX system.
  18. Includes violations issued by state and federal safety and environmental regulatory agencies, based on date violation was received.
  19. NOVs and Penalty Payments received during the reporting period are excluded if the violation stemmed from conditions that existed prior to the acquisition of Apex, as the company did not have operational control at the time of the incident.
  20. Reportable pipeline incidents are those that are reportable under US DOT PHMSA’s pipeline safety regulations.
  21. Spills include releases off containment to the environment greater than or equal to 42 gallons.
  22. Spills discovered during the reporting period are excluded if the incident resulted from conditions that existed prior to the acquisition of Apex, as the company did not have operational control at the time of the spill.
  23. Spill intensity is calculated as total barrels of liquid released (hydrocarbon and non-hydrocarbon) divided by total barrels of produced liquids (CNX and third‐party produced water and CNX condensate), with results expressed per 100,000 barrels.

General Notes:

  1. These metrics have been calculated using the best available data at the time of publication. Historic metrics are subject to change as we continuously seek to improve data management processes and methodologies as CNX strives to provide a high level of transparency, consistency, and accuracy.
  2. Data shown as “-” represent the value of zero. Data shown as “0” represent a value less than one, rounded to zero.
  3. In some instances, amounts reported on the quarterly CNX ESG Performance Scorecard may not foot to the reported annual amounts, and subtotals may not foot to totals, due to rounding.