Jeff Hamling joined Cornerstone in 2017, bringing a wealth of experience and relationships in Atlanta, Georgia. Jeff came to the firm after two years as a lobbyist in Dentons' Atlanta and Washington offices where he represented a number of corporate, governmental, and non-profit clients.

Prior to Dentons, Jeff worked at the Georgia Chamber of Commerce as vice president for state and federal affairs. Jeff joined the Chamber after serving then-Congressman Tom Price for over five years. Starting as a staff assistant, Jeff was quickly promoted to deputy chief of staff, overseeing the Atlanta office and various aspects of the federal legislative staff.

Jeff has also been recognized by prestigious organizations for professional accomplishments: profiled in Capitol Impact Magazine's People on the Move, "Rookie of the Year" award voted on by his peers in the Georgia lobbying community, and James Magazine's Georgia's Political Influencers in Washington, D.C.

Lawrence Bell joined Cornerstone in February 2023 from Sen. Warnock's (D-GA) office where he served as Deputy Chief of Staff and Senior Advisor. Lawrence joined the Senator's office after serving as an Advisor and Chief of Staff for the Warnock for Georgia Senatorial campaign in the 2020 special election. His leadership role on that campaign led to a historic victory electing the state's first Black United States senator.

Prior to joining the Warnock campaign, Lawrence worked in the Atlanta office of a large law and lobbying firm. There, he represented some of the country's largest corporations, working with state and local elected officials to help shape public policy and regulations across a variety of industries. His role at the firm also included community engagement, helping the organization develop and implement its philanthropic strategy to maximize the firm's impact in the community.

Lawrence has volunteered with numerous organizations including Big Brother Big Sister, Yes Atlanta and Urban League of Greater Atlanta-Young Professionals, among others. He has served on the advisory board for the Young Adult Guidance Center, and the Atlanta Chapter of National Black MBA. He also served on the board for Groundwork Atlanta, a non-profit focused on environmental sustainability and was a Trustee at Ebenezer Baptist Church, where he is still a member. Lawrence was recognized in Southern Journal Magazine as one of their 14 under 40. He received his master's from Georgia State University and his bachelor's from Clark Atlanta University.

6-10 years

Diana Carlen leads the firm's business and utility practice and has over 20 years of legal and legislative experience. Prior to joining Gordon Thomas Honeywell Governmental Affairs, Diana served as Leadership Counsel to the Senate Republican Caucus. In that role, she also served as the caucus attorney for the following policy issues: energy, natural resources, agriculture, land use, telecommunications and water issues. Prior to working for the Senate, Diana practiced law for several years focusing on land use and environmental issues and also served as a Law Clerk to Chief Justice Gerry Alexander of the Washington State Supreme Court. Diana represents several of the firm's business clients, public utilities, and port clients.

20+ years

Nonpartisan staff for House members during development and passage of Washington's Forests & Fish law.

Josh has relationships with key legislators, statewide elected officials, agency staff and locally elected officials across the state.

Prior to joining the GTH-GA team, Josh spent nearly 10 years advocating for counties, serving as the Legislative Relations and Policy Director and General Counsel for the Washington State Association of Counties. Josh started working in Olympia in 1998 as nonpartisan counsel to the House of Representatives and served as Legislative Director for the Department of Fish and Wildlife. As Environmental Policy Director for the Washington Forest Protection Association he represented private forest landowners in the state's environmental regulatory system. He also assisted in Governor Locke's water reform efforts. Josh is a member of the Washington State Bar Association, graduate of Central Washington University and the Vermont Law School, and is a fourth generation Washingtonian. He lives in Olympia with his wife Karen.

20+ years

Jerry Usry joined the firm in 2015, establishing the firm's Atlanta, Georgia office. Prior to joining Cornerstone, Jerry was the principal and founder of a successful, full-service, public affairs consulting firm headquartered in Albany, Georgia

Under retainer with a number of corporate, governmental and association clients, the firm established a strong track record of accomplishments with both the Georgia General Assembly and the U.S. Congress. From securing multi-million dollar appropriations projects, to drafting and implementing complex legislative strategies, Jerry has consistently achieved client goals and enjoys long-term business relationships as a result. He has played a major role in the reform of the Georgia Tax Code, a rewrite of state health and water planning laws, new food safety reporting statutes and the establishment and funding of a variety of university based institutes.

Democrat and Republican governors have appointed him to a variety of government policy posts, including the Georgia Rural Development Council and the ACT-ACF Water Compacts Advisory Committee. Jerry has also been recognized by prestigious organizations for professional accomplishments: Georgia Trend's 40 Under 40, Rising Star in Business and Politics; American Society of Association Executives, National Award for Excellence in Government Relations; James Magazine, Top Ten Independent Lobbyists in Georgia; and Zpolitics, 16 power players under the Gold Dome. Jerry is an original member of Governor Nathan Deal's (R-GA) Finance Committee and was appointed to his Inaugural Executive Committee.

Prior to the establishment of his consulting practice, Jerry was a staff director of a major commodity organization and a regional administrator for a state agency. He is a member of the Georgia Professional Lobbyist Association, Georgia Chamber of Commerce Board of Directors, and the Georgia Agribusiness Council.

A lifelong Georgian and a native of Athens, Jerry has a B.S.A. and a Master's degree in Public Administration.

Sally Kilpatrick advises a diverse set of clients on state legislative and regulatory issues with a focus on healthcare, energy, education and economic development policy. Sally joined Cornerstone's Atlanta, Georgia office in September 2015 and has more than 10 years of experience providing strategic advice to the private sector.

Prior to joining Cornerstone, Sally served as vice president of government affairs at the Georgia Chamber of Commerce, the state's largest business advocacy organization. Through her seven-year tenure at the Chamber, Sally developed an extensive background managing legislative and regulatory issues in the policy areas of water, energy, education, economic development and health care. While at the Chamber, Sally served on the Technology Association of Georgia's Government Affairs Taskforce and the Georgia Water Alliance. She managed the Georgia Chamber's Local Chamber Legislative Ad Hoc Committee and legislative affairs for Chamber's Small Business Advisory Council.

She has established strong, bipartisan working relationships with House and Senate members of the Georgia General Assembly and state agency officials. Her industry specific knowledge and key relationships have been valuable in assisting clients to successfully achieve their legislative and regulatory objectives at the state Capitol.

Sally is a current board member of Atlanta Moms Making A Difference and serves on the executive committee of the Georgia Chamber's Government Affairs Council.

Sally earned her B.S. in Journalism at Appalachian State University in Boone, North Carolina. She and her husband Trey reside in Atlanta with their daughter, Phen, and son, Clark.

Charlene Puchalla serves as an Assistant Vice President in Cornerstone's Atlanta, GA office, assisting the firm's government relations team with client service activities including conducting research and providing updates on state legislative matters and diverse regulatory issues.

Charlene joins Cornerstone following her time at Wellstar Health System, where she held multiple positions, most recently serving as a Government Relations Specialist. In this role, she developed and managed relationships with elected officials and key staff in Georgia at the local, state and federal levels, while assisting in developing and recommending legislative priorities and goals. Charlene gained invaluable experience summarizing and interpreting the impact of legislation and preparing legislative summaries, regular communications and presentations. She also served as a Legal Assistant of Government Relations at Wellstar.

Prior to Wellstar, Charlene served as a scheduler and field representative for Representative Tom Price (R-GA) for more than seven years. She began her career as a legislative and research aid in the Pennsylvania State Senate.

Charlene earned her bachelor's with a concentration in public administration from Shippensburg University.

Tim Schellberg is the Founder and President of Gordon Thomas Honeywell Governmental Affairs, an internationally known governmental affairs and government business market development firm. In addition to serving as the firm's managing partner, Tim maintains an active governmental affairs and market development practice, and provides strategic direction to the firm's four primary divisions: International, Multi-State, Federal, and Washington State. Under Tim's leadership, the firm has had impressive growth and success.

Tim is recognized nationally and internationally for his work to create and grow new markets by collaborating with business and government to implement dynamic public policy and technology based solutions. Tim has used over 25 years of professional experience, worldwide contacts and knowledge of global government institutions to actively lead legislative based projects in over 30 countries and within the United States.