Marc Goldberg joined Cornerstone in July 2023, expanding the firm's public affairs presence to New Hampshire and bringing 17 years of media and strategic communications experience to the Public Affairs team.

Previously, Marc served as chief of staff for the office of Sen. Maggie Hassan (D-NH) since 2016. In this role, he managed a team of nearly 50 staffers across the Senator's D.C. office, five state offices and subcommittee office through the Homeland Security and Governmental Affairs Committee. Before that, he also served as Sen. Hassan's campaign manager as well as her communications director when she was New Hampshire's governor. Other communications roles include press secretary for former Maryland Lt. Gov. Anthony Brown and communications director for former Rep. Suzanne Kosmas (D-FL).

Marc has also served as the independent expenditure director for the Democratic Senatorial Campaign Committee. In this role he focused on running paid-media efforts across the committee's targeted states and building teams of TV, digital and polling consultants for each state.

Marc holds a bachelor's degree in political science with a concentration of American politics and a minor in psychology from the University of Pennsylvania.

Kirsten Koch joined Cornerstone's Concord team in October 2024, serving as Vice President to assist with executing strategic client initiatives and helping them cultivate strong relationships throughout the state.

Kirsten came to the firm following her time at the Business & Industry Association of New Hampshire (BIA) most recently serving as Vice President of Public Policy. In this role, Kirsten advised the public policy team, driving proactive advocacy efforts and overseeing the policy development process among BIA members. She regularly testified before the state legislature representing the business community on a variety of energy and environmental issues. Kirsten successfully advocated changes to make New Hampshire a more competitive state for doing business, including spearheading key policy initiatives to streamline permitting processes and drive the development of local energy sources. She also directed BIA's largest coalition of businesses while producing educational conferences for the organization.

Before her time at BIA, Kirsten worked as a Legislative Aide for the New Hampshire State Senate, gaining an in-depth understanding of the legislative process and building strong relationships with legislators and state agencies. She served as the aide to the Health and Human Services Committee and the Transportation Committee. Additionally, Kirsten served as Strategic Initiatives Director for the New Hampshire Republican State Committee, leading grassroots initiatives and managing statewide coalitions for federal, state and local elections.

Kirsten is proud to be a lifelong Granite Stater. She holds a bachelor's degree in political science with a law minor from Plymouth State University, where she graduated Summa Cum Laude.

Maura Weston brings a wealth of knowledge and experience in political and legislative advocacy to our Concord office.

Maura previously served as President and Founder of MM Weston & Associates. With extensive experience representing a wide range of clients before the New Hampshire legislature and regulatory agencies, she specializes in crafting and executing both short- and long-term legislative strategies, drafting testimony and working closely with policymakers to advance client interests. After founding her own government relations practice, Maura successfully represented clients in key sectors such as telecommunications, healthcare, energy and contract procurement.

Her notable achievements include advocating for the deregulation of VoIP services, reforming wireless facility siting processes and advancing net energy metering laws to expand renewable energy markets. Maura has also played a pivotal role in creating new healthcare legislation for collaborative practice agreements and helped invalidate restrictive covenants in physician employment contracts.

Prior to founding MM Weston & Associates in 2006, Maura was a Partner at Rath, Young, and Pignatelli, where she honed her expertise in government relations. Earlier in her career, she worked as an Associate Attorney and Law Clerk at the same firm.

Maura holds a Juris Doctor from the University of New Hampshire School of Law and a Bachelor of Arts in Political Science from the University of New Hampshire. In addition, she is an active member of the American Bar Association and New Hampshire Bar Association and became the sole New Hampshire member of the National League of Women Lobbyists.