Today, Seneca Resources Company, LLC (Seneca), the Exploration and Production segment of National Fuel Gas Company (NYSE: NFG) (National Fuel or the Company), announced that it has achieved certification of approximately 300 million cubic feet per day of the Company’s Appalachian production under Project Canary’s TrustWell^TM program. This certification is the result of an environmental performance certification pilot with TrustWell^TM, which covered 121 of the Company’s natural gas wells in Pennsylvania.

In September 2021, Seneca began Project Canary’s rigorous assessment process, which included review of over 600 data points across air, land, water, and community criteria. Upon completion of this assessment, Seneca earned “Platinum” or “Gold” ratings for all of the wells in the pilot. These ratings confirm a demonstrated commitment to environmental stewardship through low methane emissions, effective water management, and well integrity programs, among other key operational areas. Seneca also deployed Canary X continuous emissions monitoring units on select pads, which accompany high-grade leak detection monitors that are installed as part of Seneca’s standard pad design.

With this certification, production from these 121 wells, representing approximately 30 percent of the Company’s natural gas production, can be marketed as Responsibly Sourced Gas (RSG) under Project Canary’s TrustWell^TM program, a distinctive classification verifying natural gas is produced in the most environmentally responsible manner.

“Receiving such high marks from Project Canary, a top ESG assessment firm, demonstrates Seneca’s deep commitment to sustainability and best-in-class operations,” Justin Loweth, President of Seneca, said. “This certification, which is in addition to previously announced certifications, further differentiates our sustainably produced natural gas and opens additional opportunities to participate in the rapidly evolving RSG market.”

“This pilot project covered a broad set of wells varying in age and Seneca’s high marks are a testament to the company’s rigorous environmental, health and safety program,” said Project Canary co-founder and CEO Chris Romer. “Actual measurement and dedicated action are critical to ensuring the cleanest natural gas molecules possible are powering society and we’re committed to being the trusted solution to help companies measure, mitigate emissions and validate performance.”

A mission-driven public benefit corporation, Project Canary delivers trusted and reliable independent energy ESG data by rigorously assessing environmental performance and utilizing continuous emissions monitoring technologies that help companies minimize emissions and achieve best-in-class performance. Project Canary’s differentiated TrustWell^TM certification process independently analyzes 600+ data points across the ESG spectrum on a well-by-well basis to create a dynamic score.

Certifications received from this partnership are in addition to a recently announced certification that designated 100% of Seneca’s Appalachian natural gas production (over 1 billion cubic feet of daily gross production) as responsibly sourced.

About Project Canary

Project Canary is an environmental performance analysis firm focused on the E in ESG for emission-intensive companies. We are the leaders in the certification of responsible operations and provide measurement-based methane and emission profiles via continuous monitoring technology that help companies take ESG action. Formed as a Public Benefit Corporation, Project Canary’s Denver-based team of scientists, engineers, and seasoned industry operators have earned recognition for their uncompromising standards and high-fidelity data. For more information, visit projectcanary.com.

Project Canary Contact

Brian Miller

brian.miller@projectcanary.com

Cautionary Statements

Certain statements contained herein, including statements identified by the use of the words “anticipates,” “expects,” “intends,” “plans,” “predicts,” “projects,” “believes,” “will,” “may,” and similar expressions, and statements other than statements of historical facts, are “forward-looking statements” as defined by the Private Securities Litigation Reform Act of 1995. Forward-looking statements involve risks and uncertainties, which could cause actual results or outcomes to differ materially from those expressed in the forward-looking statements. While National Fuel’s expectations, beliefs, and projections are expressed in good faith and are believed to have a reasonable basis, actual results may differ materially from those projected in forward-looking statements. In addition to other factors, the following are important factors that could cause actual results to differ materially from those discussed in the forward-looking statements: (1) National Fuel’s ability to estimate accurately the time and resources necessary to implement new practices; (2) governmental/regulatory actions and/or market pressures to reduce or eliminate reliance on natural gas; and (3) the other risks and uncertainties described in (i) National Fuel’s most recent Annual Report on Form 10-K at Item 7, MD&A, and Quarterly Reports on Form 10-Q at Item 2, MD&A, under the heading “Safe Harbor for Forward-Looking Statements,” and (ii) the “Risk Factors” included in National Fuel’s most recent Annual Report on Form 10-K at Item 1A. National Fuel disclaims any obligation to update any forward-looking statements to reflect events or circumstances after the date hereof. Because of these risks and uncertainties, readers should not place undue reliance on these forward-looking statements or use them for anything other than their intended purpose.