board of directors

At the Pittsburgh Downtown Partnership, Tosh is responsible for the development of mobility and infrastructure in Pittsburgh’s Central Business District, spanning from right-of-way improvement projects to transportation demand management programming.

Prior to joining PDP, Tosh served as the Program Director of Move PGH, where he coordinated a consortium of transportation service providers to produce Pittsburgh’s first Mobility as a Service offering. This program built off of his previous work with the City of Pittsburgh’s Department of Mobility and Infrastructure, where he drafted formational policies related to shared mobility service operation.  He has developed projects, policies, and programs related to smart curb management, electric vehicle charging, and transit integration.

Tosh hails from Lancaster, PA and migrated westward to attend the University of Pittsburgh, where he graduated with a BA in Environmental Studies and a minor in Geographic Information Systems.

With over three decades of experience, Lynn has been at the forefront of transformative projects that have reshaped Pittsburgh’s landscape. Her expertise in land acquisitions, strategic analysis, and repositioning of land has consistently delivered exceptional results.

As a past president of NAIOP Pittsburgh and a 2022 inductee into its Hall of Fame, Lynn’s influence and dedication to the industry are well-recognized. Lynn is also involved in ULI (Urban Land Institute), is Vice Chair Emeritus of its Women’s Leadership Initiative; is an appointed member of the Moon Transportation Authority (MTA), and a board member of Mobilify, a transit organization devoted to improving transit and mobility in the region.

Lynn joined Fourth River Development in April of 2025 as director of Land Advisory Services where she works with firms seeking to develop ground-up multifamily, senior living and student housing.

Andrew is a public finance and policy expert with over two decades of experience leading strategic initiatives across the public and private sectors. He currently serves as a registered municipal advisor, where he represents cities, counties, and public agencies across the country in developing long-term financial strategies to support infrastructure, transportation, and energy systems.

Andrew is deeply engaged in civic leadership. He is a Commissioner in Mt. Lebanon, where he serves as the municipal liaison to the Mobility Board and has championed initiatives to support sustainable transportation, regional collaboration, and economic development. He is also a volunteer firefighter and a certified EMT.

Elijah Hughes practices as an urban designer and strategic planner at HDR Inc in Pittsburgh, PA. His award-winning professional work emphasizes prudent, sustainable, and forward-looking investment by public agencies to foster equitable and impactful outcomes. His SW PA transportation work includes transit-oriented communities and corridor planning for Pittsburgh Regional Transit and a 10-county multimodal transportation plan for the Southwestern Pennsylvania Commission.

Elijah was previously a researcher at the Carnegie Museum of Natural History where he published on the evolution of the mammalian brain and inner ear and was an adjunct faculty member of the Carnegie Mellon University School of Architecture. Elijah received a Bachelor of Architecture degree from Carnegie Mellon University and is an EcoDistricts Accredited Professional. He also serves on the Board of Trustees for the Allegheny Land Trust.

Throughout his career, Ken maintained a general real estate practice, with most of his time devoted to zoning, commercial leasing, and low- and mixed-income housing development. Ken’s clients included for- and non-profit developers and housing authorities. He also devoted a substantial amount of time to related pro bono work, including representing tenants faced with eviction and helping form tenants’ and homeowners’ organizations. During his legal career, he also had numerous occasions to assist his nonprofit clients with issues regarding the governance of nonprofit organizations.

Ken currently sits on the Board of the Rail Passengers Association and has been a member of the boards of several organizations, including Children’s International Summer Villages USA, the Pittsburgh Botanic Garden, and the Thomas Merton Center. He has also served on the Allegheny County Transit Council, SPC’s Citizen’s Advisory Committee, and was a founding member of Western Pennsylvanians for Passenger Rail.

Ken attended St. John’s College (Annapolis) and the Duquesne University Law School. He was a practicing attorney from 1984 until his retirement in 2016. He has always had an interest in how folks could get around without an automobile and is an extensive user of transit himself.

Sabreena currently works as Client Development Manager at GBBN Architects, leading strategy and partnerships across diverse markets — including mixed-use development, arts and culture, health care, and education. In 2024, she was honored with the NAIOP Developing Leader Award. The recognition affirmed a core belief that has guided her career: that real estate can be both visionary and responsible — and that the best outcomes happen when communities are engaged as collaborators, not afterthoughts.