Keegan Werlin LLP provides comprehensive legal services in governmental affairs, including regulatory compliance, public policy, and government relations. Our attorneys advocate in legislative, state, and municipal matters, advising clients on New England laws regulating business, lobbying, ethics, campaign finance, and government procurement. Based in Lexington, MA, we have extensive experience representing clients in projects requiring federal, state, and local advocacy. Governmental & Legislative Relations Overview Keegan Werlin provides a wide range of advocacy services to clients in legislative, state and municipal agency matters. Our attorneys advise clients on Massachusetts laws that regulate business and industry; lobbying, ethics, and campaign finance; government procurement; and the promulgation of regulations. Keegan Werlin possesses extensive experience representing clients in diverse projects requiring federal, state and local representation and advocacy. Our attorneys’ experiences working with members of the Massachusetts Legislature and serving in the Commonwealth’s executive branch has allowed our governmental relations professionals to develop key contacts throughout Massachusetts. State and Legislative Advocacy Keegan Werlin’s legislative practice is tailored to meet the particular needs of the individual client. Among the attorneys at the firm, two attorneys are registered lobbyists with significant experience advocating on behalf of client interests in advancing ideas, goals and objectives into legislation. Additionally, our attorneys assist clients with developing outreach plans to achieve success before various state agencies as they propose regulatory actions that affect their interests. As legislative advocates, Keegan Werlin works with our clients to develop and implement strategic plans to influence legislative initiatives of interest to a particular client. We coordinate outreach to key legislators, organizations and associations to secure a broad base of support. Our legislative tracking and monitoring services can also provide clients with invaluable “eyes and ears” at the State House. Municipal Advocacy At the local level, KW’s attorneys have extensive knowledge from working with municipal officials on project-related issues and local permitting. Skilled in all facets of municipal representation, KW’s attorneys have appeared before more than 50 communities across the Commonwealth on a wide range of client issues.

Molly Karg Agostinelli is an associate attorney at Keegan Werlin LLP, specializing in energy, regulatory, and public utility law. Ms. Agostinelli’s experience at the firm focuses on ratemaking and storm recovery work in Massachusetts. While attending law school, Ms. Agostinelli interned with the MA Department of Public Utilities. Prior to joining the firm in May 2023, Ms. Agostinelli worked as senior associate with the Mergers & Acquisitions department at KPMG LLP in Boston. Public Utilities, Energy Law; Regulatory & Administrative Molly Karg Agostinelli is an associate attorney at Keegan Werlin LLP, specializing in energy, regulatory, and public utility law. Molly K. Agostinelli Phone: 617-951-1400 Email: magostinelli@keeganwerlin.com ● Regulatory & Administrative Law ● Energy Law ● Public Utilities Bar Admissions Massachusetts Ms. Agostinelli’s experience at the firm focuses on ratemaking and storm recovery work in Massachusetts. While attending law school, Ms. Agostinelli interned with the MA Department of Public Utilities. Prior to joining the firm in May 2023, Ms. Agostinelli worked as senior associate with the Mergers & Acquisitions department at KPMG LLP in Boston. Prior to Law school, Ms. Agostinelli served as regulatory coordinator at a financial consulting firm serving regulated natural gas, electric, and water utilities in performing return on equity testimony for ratemaking purposes and energy market assessment before the MA DPU, FERC, and other US/Canadian utility regulatory agencies. Education B.A. 2014, Boston University J.D. 2020, Boston College Law School

Joseph Kelley received his Juris Doctor from the University of Massachusetts School of Law. Following his second year of law school, he worked at Keegan Werlin as a Law Clerk helping on numerous matters, primarily aiding with monitoring hearings conducted by the Joint Committee on Telecommunications, Utilities and Energy. During his third year of law school, he interned at Pateakos & Poulin, where he assisted with civil litigation, real estate transactions, and estate planning. Administrative & Energy Law; Public Utilities Joseph F. Kelley joined the practice in September of 2024 as an associate attorney, specializing in administrative, energy, and public utility law. Joseph F. Kelley Phone: 617-951-1400 Email: jkelley @keeganwerlin.com ● Administrative Law ● Energy Law ● Public Utilities Bar Admissions Massachusetts Joseph Kelley received his Juris Doctor from the University of Massachusetts School of Law. Following his second year of law school, he worked at Keegan Werlin as a Law Clerk helping on numerous matters, primarily aiding with monitoring hearings conducted by the Joint Committee on Telecommunications, Utilities and Energy. During his third year of law school, he interned at Pateakos & Poulin, where he assisted with civil litigation, real estate transactions, and estate planning. Education Worcester State University, B.A., May 2020 University of Massachusetts School of Law, J.D., 2024

Mr. Vaughan received his Juris Doctor from Boston College Law School. While attending Boston College Law School, he worked as a Judicial Intern for The Honorable F. Dennis Saylor, IV, of the United States District Court for the District of Massachusetts. After his first and second years of law school, Mr. Vaughan worked for the Middlesex District Attorney’s Office and as a summer associate for Keegan Werlin. Administrative & Energy Law; Public Utilities Brendan P. Vaughan is a partner at Keegan Werlin LLP specializing in energy, regulatory, and public utility law. He represents energy and utility clients before administrative agencies such as the Massachusetts Department of Public Utilities and the Connecticut Public Utilities Regulatory Authority. Brendan P. Vaughan Phone: 617-951-1400 Email: bvaughan@keeganwerlin.com ● Administrative Law ● Energy Law ● Public Utilities Bar Admissions U.S. District Court District of MA Connecticut Massachusetts Mr. Vaughan received his Juris Doctor from Boston College Law School. While attending Boston College Law School, he worked as a Judicial Intern for The Honorable F. Dennis Saylor, IV, of the United States District Court for the District of Massachusetts. After his first and second years of law school, Mr. Vaughan worked for the Middlesex District Attorney’s Office and as a summer associate for Keegan Werlin. Mr. Vaughan received his Bachelor of Arts in political science, cum laude, from Salve Regina University in Rhode Island. At Salve Regina University, he was a member of the Pi Sigma Alpha National Political Science Honor Society and a Chi Alpha Sigma National College Athlete Honor Society Honoree. He brings a wide berth of experience to the firm; before joining the firm in 2016, Mr. Vaughan practiced law at Campbell Campbell Edwards & Conroy, handling civil litigation matters, and Northern LNG LLC, a small energy start-up. Education Boston College Law School, Boston, Massachusetts, J.D., 2014 Salve Regina University, Newport, Rhode Island, B.A. Political Science, 2011 Member, Pi Sigma Alpha National Political Honor Society; Honoree, Chi Alpha Sigma National College Athlete Honor Society

Mr. Humm advises energy and public utility companies on legal, regulatory, commercial, and legislative matters to support their objectives and ensure compliance. His representation includes advocacy and strategic guidance on issues related to distribution rates, planning and system reliability, infrastructure replacement, capital and operational expenses, energy supply, service quality, safety, compliance, mergers and acquisitions, and state investigations. Energy and Regulatory Law, Litigation, Administrative & Public Utilities Robert J. Humm is a partner at Keegan Werlin LLP, focusing on energy, regulatory, and public utility law. He represents a number of gas and electric utilities in state regulatory and administrative proceedings in Rhode Island, Massachusetts, and Connecticut. Robert J. Humm Phone: 617-951-1400 Email: rhumm@keeganwerlin.com ● Energy & Regulatory Law ● Public Utilities ● Administrative Law ● Litigation Bar Admissions Rhode Island Massachusetts Connecticut U.S. First Circuit of Appeals U.S. District Court, District of Rhode Island U.S. District Court, District of Massachusetts U.S. District Court, District of Connecticut Mr. Humm advises energy and public utility companies on legal, regulatory, commercial, and legislative matters to support their objectives and ensure compliance. His representation includes advocacy and strategic guidance on issues related to distribution rates, planning and system reliability, infrastructure replacement, capital and operational expenses, energy supply, service quality, safety, compliance, mergers and acquisitions, and state investigations. In addition, his background as a litigation attorney allows him to assist clients with court appeals from administrative agency decisions. Before joining Keegan Werlin, Mr. Humm served as Senior Counsel at National Grid in its New England Legal Regulatory Group, and as the Assistant General Counsel – Litigation at Blue Cross & Blue Shield of Rhode Island, where he represented the company in federal and state administrative proceedings, among other responsibilities. Mr. Humm began his career as a litigation attorney at Adler Pollock & Sheehan P.C. Roger Williams University School of Law, J.D., 2008 Brown University, B.A., Modern American History, 2004 Memberships & Associations Town Council, Town of Barrington, Rhode Island – Vice President Leadership Rhode Island – Member. Friends of Brown Basketball – Executive Board Member. Education Recognitions Rhode Island Super Lawyers, “Rising Star,” 2014, 2015, 2016 Roger Williams University School of Law Alumni Association - President (2012-14). Roger Williams University School of Law Alumni Board of Directors - Board Member (2009-16). Roger Williams University School of Law Board of Directors - Ex Officio Member (2012-14).

Erika J. Hafner is a partner at Keegan Werlin LLP. Ms. Hafner concentrates in the areas of energy and regulatory, administrative, and environmental, municipal and land use law. Energy, Environmental & Administrative Law Erika J. Hafner is a partner at Keegan Werlin LLP. Ms. Hafner concentrates in the areas of energy and regulatory, administrative, and environmental, municipal and land use law. She has represented energy and utility clients before the Department of Public Utilities in cases involving service territory disputes, franchise rights, rate issues, energy efficiency programs, zoning exemptions and other regulatory matters. Erika J. Hafner Phone: 617-951-1400 Email: ehafner@keeganwerlin.com ● Energy Law ● Administrative Law ● Environmental Law Bar Admissions Massachusetts Ms. Hafner's practice before the Energy Facilities Siting Board has included an array of different energy facilities, including renewable energy projects, battery energy storage systems, natural gas pipelines, regulator stations, electric transmission lines, substations and switching stations, as well as natural gas generating and peaking facilities. She has also represented the region's first large-scale, off-shore wind power project in obtaining its state and local permits. Before joining the firm in 2001, Ms. Hafner worked at the Massachusetts Office of Dispute Resolution and interned at the Government Bureau in the Office of the Attorney General of Massachusetts. Prior to receiving her Juris Doctor from Boston College Law School, where she was a member of the Boston College Environmental Affairs Law Review, Ms. Hafner completed her Bachelor of Arts degree in Government, magna cum laude, from Bowdoin College. Ms. Hafner is admitted to practice before the bars of Massachusetts, the United States District Court and the First Circuit Court of Appeals. She is also a member of the American, Massachusetts and Boston Bar Associations. Education Boston College Law School, Newton, Massachusetts J.D. Law Review: Boston College Environmental Affairs Law Review, 1998 - 2000 Bowdoin College, Brunswick, ME, A.B. Government and Legal Studies, Magna Cum Laude Honors: With Honors Associations Boston Bar Association Massachusetts Bar Association

Keegan Werlin LLP is committed to diversity, inclusiveness, and anti-racism within the firm, legal profession, and broader community. As a proud Pledge Partner of the MBA Eco Challenge, we actively support initiatives like Bottom Line of Massachusetts, the Law Firm Antiracist Alliance, and Crossroads of Massachusetts. We believe that diversity fosters innovative solutions and drives better outcomes for our clients across New England. Diversity Committed to fostering, cultivating and preserving a culture of diversity and inclusion. Our Commitment Our commitment to diversity and inclusion is a significant principle in our firm’s culture. We strive to support organizations that have the same ideals as we do and we are honored to work with clients who further diversity, inclusion and antiracism at their institutions. Keegan Werlin LLP is committed to fostering, cultivating and preserving a culture of diversity and inclusion. Our human capital is the most valuable asset we have. The collective sum of the individual differences, life experiences, knowledge, inventiveness, innovation, self-expression, unique capabilities, and talent that our employees invest in their work represents a significant part of not only our culture but our reputation. We embrace our employees’ differences in age, color, ethnicity, family and marital status, gender identity or expression, language, national origin, physical and mental ability, political affiliation, race, religion, sexual orientation, socio-economic status, veteran status and other characteristics that make our employees unique. Diversity and Inclusion Action Committee Keegan Werlin LLP's Diversity and Inclusion Action Committee was created to further the firm's diversity and inclusion initiatives and assist in their strategy and planning as well as take concrete action within our community to bring about position change toward racial justice and equity for all people. We are committed to the furtherance of antiracism, defined as the creation and proactive reinforcement of policies, practices, attitudes and actions that produce equitable power, access, opportunities, treatment and outcomes for all. We believe that racial equity is achieved when no group experiences an advantage or disadvantage on basis of race or ethnicity. Diversity and Inclusion Action Programs and Involvement Keegan Werlin LLP is serious about furthering diversity, inclusiveness and antiracism within the firm, the legal profession, and the broader community. We believe that diversity and inclusion can, in part, be meaningfully fostered by action on the community level. To that point, we maintain and will continue to develop memberships with organizations that we have vetted and found to have the structure and leadership in place to advance diversity, inclusion and antiracism in the legal community, consistent with Keegan Werlin LLP’s beliefs. We also encourage engagement of our employees in the discussion and development of policies regarding recruitment, retention, and promotion of a diverse workforce at all levels of Keegan Werlin LLP. In keeping with our commitment to community involvement, as a firm, we have partnered with two external resources, Bottom Line of Massachusetts and Crossroads of Massachusetts, to work with and mentor students from primarily low-income and first-generation college-seeking backgrounds. We strongly support these partner organizations in their missions to foster high school and college students to succeed in their life visions and help them to define career goals. Keegan Werlin is actively involved at a personal level with career networking, micro-internships, interview prep, job shadows and mentoring students from these organizations. Keegan Werlin sponsors job shadowing programs with Boston Public Schools, has volunteered with the Essex County Habitat for Humanity, and attends a number of community programs such as Teen Challenge, College Bound Dorchester, the Inner City Scholarship Fund, Camp Courant, Pitching in for Kids, New England Women in Energy and the Environment and other groups. Keegan Werlin is also a member of the national Law Firm Antiracist Alliance (“LFAA”), a consortium of law firms with the shared vision to use our collective talents and resources to assist all people in our communities who can benefit from a more equal society. As stated in its charter, the purpose of the LFAA is “To leverage the resources of the private bar in partnership with legal services organizations to amplify the voices of communities and individuals oppressed by racism, to better use the law as a vehicle for change that benefits communities of color and to promote racial equity in the law.” Inclusion and Diversity Suppliers When choosing suppliers, we opt to utilize vendors who are champions of diversity whenever possible. Keegan Werlin LLP is proud to be a corporate partner with: Bottom Line helps first-generation students from low-income backgrounds get into college, graduate, and go far in life. Change a Life. Change Everything. At Crossroads, we believe that long-term empowerment programs plus consistent positive relationships are the keys to transforming youth who risk being defined by their past into young adults capable of defining their futures. Being antiracist requires work on many fronts. LFAA recognizes and embraces the role that law firms, particularly when acting collectively, can play to help bring about systemic change and racial equity in the law. LFAA’s goal is simple: racial equity. Facilitating pro bono work is the primary mechanism by which we pursue this goal. Our Attorneys Learn More

Ms. Tisler received her Juris Doctor from The University of Toledo College of Law with a Certificate in Environmental Law. While in law school, Ms. Tisler participated in Moot Court and was the Assistant Managing Editor of The University of Toledo Law Review.  Ms. Tisler authored and co-authored two environmental law articles published in The University of Toledo Law Review. Administrative & Energy Law; Public Utilities Ms. Tisler advises public utilities on legal and regulatory issues related to energy procurements, renewable energy, grid modernization, energy efficiency, and rate cases. Tiffany N. Tisler Phone: 617-951-1400 Email: ttisler@keeganwerlin.com ● Administrative Law ● Energy Law ● Public Utilities Bar Admissions Connecticut U.S. District Court of Connecticut Prior to joining the firm, Ms. Tisler worked as a Staff Attorney at the Connecticut Public Utilities Regulatory Authority, advising on proceedings related to renewable energy, electric vehicles, energy affordability, reliability and resilience, grid modernization, rate adjustments, annual reconciliations, revenue requirements, company restructuring, and investigations. Ms. Tisler completed a Certificate in Financing and Deploying Clean Energy from Yale University. Ms. Tisler also has experience in civil litigation and court operations. Ms. Tisler received her Juris Doctor from The University of Toledo College of Law with a Certificate in Environmental Law. While in law school, Ms. Tisler participated in Moot Court and was the Assistant Managing Editor of The University of Toledo Law Review. Ms. Tisler authored and co-authored two environmental law articles published in The University of Toledo Law Review. Ms. Tisler received her Bachelor of Arts in political science, zoology, and environmental science from Miami University in Oxford, Ohio. In addition to her professional accomplishments, Ms. Tisler maintains an interest in international travel and experiences after living and working abroad for several years. Education Yale University, Certificate in Financing and Deploying Clean Energy, 2022 The University of Toledo College of Law, J.D., 2011, cum laude Miami University, B.A. in Political Science, Zoology, and Environmental Science, 2008, magna cum laude

Ms. Winter’s representation of electric and gas utilities before the Department of Public Utilities includes advocacy on issues relating to distribution rates, energy supply, renewable energy, grid modernization, system reliability, and service quality. Specifically, she has represented electric utilities in proceedings regulating the procurement of long-term renewable power, time varying rates, their continued modernization of the electric grid and the interconnection of distributed generation. Energy & Regulatory Law; Public Utilities Danielle (Rathbun) Winter is a partner at Keegan Werlin LLP specializing in energy and regulatory and public utility law. She represents a number of electric and gas utilities on issues concerning rates, planning, and energy procurement. Danielle Winter Phone: 617-951-1400 Email: dwinter@keeganwerlin.com ● Regulatory Law ● Energy Law ● Public Utilities Bar Admissions Massachusetts New York Ms. Winter’s representation of electric and gas utilities before the Department of Public Utilities includes advocacy on issues relating to distribution rates, energy supply, renewable energy, grid modernization, system reliability, and service quality. Specifically, Ms. Winter has represented electric utilities in proceedings regulating the procurement of long-term renewable power, time varying rates, their continued modernization of the electric grid and the interconnection of distributed generation. She has represented gas utilities in proceedings before the DPU regarding base distribution rates, cyber security and gas procurement and related issues. Prior to joining Keegan Werlin, Ms. Winter was an Assistant Attorney General in the Massachusetts Attorney General’s Office, Office of Ratepayer Advocacy. She was also an Assistant Counsel at the New York State Department of Public Service. Education Albany Law School, J.D. Binghamton University B.A. in Creative Writing, Comparative Literature and English Literature, minor in Spanish.

Prior to rejoining the firm in 2021, Mr. Penders served as a policy advisor with Preti Strategies, providing business, political and strategic advice to clients on public policy and energy law issues, and of counsel in the Energy Practice Group of its affiliated law firm, Preti, Flaherty, Beliveau & Pachios. Administrative, Energy & Regulatory Law; Public Utilities; Government Relations & Lobbying Kevin Penders serves as a Partner and the Practice Manager for Keegan Werlin’s Energy & Regulatory Practice. Mr. Penders focuses on energy, regulatory, public utility law and governmental relations for utility clients, and represents electric and gas utilities before public utility commissions on issues associated with rates, forecast and supply planning, corporate financing, energy procurement and contracting, pipeline safety, and energy efficiency. Kevin F. Penders Phone: 617-951-1400 Email: kpenders@keeganwerlin.com ● Administrative Law ● Energy & Regulatory Law ● Public Utilities ● Government Relations & Lobbying Bar Admissions Massachusetts U.S. Supreme Court As the former General Counsel to the Massachusetts Department of Public Utilities (DPU), Mr. Penders served as the chief legal and policy advisor for regulating the Commonwealth’s investor-owned electric distribution, natural gas and water companies, handled complex rate design and base rate cases, and helped to write the playbook for future regional energy solutions. Under his management, the DPU’s legal division issued over 2,000 orders on a wide range of energy issues, including traditional rate recovery obligations, initiatives to encourage grid modernization for the electric industry, including solar, battery storage and electric vehicle deployment, initiatives to quantify and reduce gas leaks in the Commonwealth, and initiatives to ensure energy efficient and renewable energy deployment to meet the Commonwealth’s clean energy and climate goals. He provides clients an in-depth knowledge regarding the regulation of electric power, natural gas and water companies, and was part of the team that created the regulatory oversight of the Transportation Network Company industry. Prior to rejoining the firm in 2021, Mr. Penders served as a policy advisor with Preti Strategies, providing business, political and strategic advice to clients on public policy and energy law issues, and of counsel in the Energy Practice Group of its affiliated law firm, Preti, Flaherty, Beliveau & Pachios. Mr. Penders was an attorney with Keegan Werlin from 2006 through 2015, and has previously held positions within the energy industry and in government, at National Grid, the former New England Gas Company, the DPU, the House Committee on Taxation, and the Senate Committee on Post-Audit and Oversight. Kevin lives in Foxborough, MA with his wife, three kids, and a menagerie of rescue dogs, domesticated snakes, and geckos. Memberships & Associations Member of the Guild of Gas Managers, 2024 to present Foxborough Cable Access Television, Board of Directors, 2024 to present Boyden Library Board of Trustees, Foxborough, MA, 2011 to 2026 Zoning Board of Appeals, Town of Foxborough, MA, 2010 to 2015 New England School of Law, J.D., 1996 College of the Holy Cross, B.A., Political Science, 1993 St. John’s Preparatory High School, 1989 Lucius Beebe Library Board of Trustees, Wakefield, MA, 1994 to 2001 Adjunct Professor teaching courses on legislation, state and local government, and business law and ethics of New England Law Boston, Boston University School of Management, and Tufts University Experimental College, 2000 to 2013 Recognitions Massachusetts’ Super Lawyers, 2013, 2014 Education