Our Team

GNA has built a diverse, but unified team of changemakers that is ready to redefine what is possible.

Working at GNA means collaborating beyond technical background, specialty, or expertise. Our team members all bring integrity, passion, and curiosity to GNA—traits necessary to change the world around them. We begin every challenge knowing we will find a solution. We always start with yes.

Our Leadership Team

Erik Neandross

Erik Neandross

Chief Executive Officer & GNA Partner

As one of the alternative fuel industry’s most knowledgeable, engaged, and trusted professionals, Erik has been at the forefront of some of the nation’s largest alternative fuel vehicle projects–working with numerous Fortune 500 companies and public sector representatives. He has led the development of several of the nation’s most successful planned clean fuel corridors and is actively engaged with leading manufacturers and end-use commercial fleet operators in the transition to zero and near-zero emission technology in both the on-road and off-road sectors. He is the visionary who has launched some of the nation’s leading alternative fuel conferences, including the nation’s leading event for advanced clean transportation technologies and low carbon fuels, ACT Expo.

Sean Turner

Sean Turner

Chief Operating Officer & GNA Partner

Sean oversees GNA’s technical team, manages a number of GNA’s day-to-day operations, and personally works directly on a host of engineering and advanced technology projects. He provides senior technical oversight to GNA’s clients on alternative fuel initiatives, air quality improvement, fleet planning, and vehicular technology. For more than 30 years, Sean has worked in international engineering consulting and government affairs on automotive emissions, alternative fuels, and air-quality issues.

Cliff Gladstein

Cliff Gladstein

Founding President

Since founding GNA in 1993, Cliff has been instrumental in the development of environmental programs and policies that have improved air quality, increased the use of clean fuels and advanced technologies in transportation, and spurred the creation of innovative public-private partnerships in a variety of sectors. It is for these reasons that he has become one of the most sought after leaders within the environmental and energy communities—he offers unparalleled experience, insight, and perspective on critical issues at the very heart of our transportation and energy systems.

Karen Mann

Karen Mann

Senior Vice President, Programs & GNA Partner

Karen has led GNA’s grant writing effort for 22 years and heads the Programs and Policies department. Her team aggressively pursues incentives that accelerate the market for low-emission technologies. Her work focuses on implementing cost-effective and technically viable projects that reduce environmental impacts. Karen’s responsibilities include analyzing the feasibility of low-emission technologies based on current operations, tracking regulations and funding opportunities, market studies, leading research for and writing of grant applications, and facilitating successful implementation of low-emission strategies.

Sarah Gallagher

Sarah Gallagher

Senior Vice President, Creative & GNA Partner

Sarah Gallagher has nearly 20 years of experience developing communications strategies for both small businesses and globally recognized brands spanning the transportation, energy, and financial sectors. She led the launch of GNA’s creative division — a full-service in-house agency that supports clean transportation and energy stakeholders in developing marketing strategies, building brand awareness, influencing key decisionmakers, and developing outreach campaigns that result in tangible change. Her team also created Advanced Clean Tech News, an online media publication spotlighting the trends driving the future of commercial transportation. Sarah holds a bachelor’s degree in business management from Capital University and a master’s degree in communications management from the University of Southern California. She is a member of the Coalition for Clean Air, Women in Clean Tech & Energy, Heal the Bay, and Women of Renewable Industries & Sustainable Energy.

Patrick Couch

Patrick Couch

Senior Vice President, Technical Services & GNA Partner

Patrick both leads and collaborates on a wide range of projects and market development initiatives for GNA’s clients and brings extensive experience in the research, development, and demonstration of a broad range of advanced mobile and stationary power technologies to the firm. With over 18 years of experience in the clean energy space, Patrick’s work includes a mix of technical, business, and policy expertise from leading fleets through the evaluation of alternative fuel technologies to assisting policy makers with the development of practical and successful strategies for clean transportation. Patrick holds a B.S. and M.S in Mechanical Engineering from University of California, Irvine.

21 years

of Average Industry Experience Per Senior Team Member (Transportation, Energy, Sustainability)

Joe Annotti

Joe Annotti

Senior Vice President, Programs & GNA Partner

Joe has aggregated over 15 years of industry experience across multiple sectors. He oversees a diverse team of program management, policy, and incentive specialists who drive innovative projects forward across the clean transportation industry. This includes GNA’s Funding 360 Program, which offers a comprehensive suite of grant tracking, writing, and management services to our clients. Building on his experience in the Gulf of Mexico’s oil and gas industry, Joe’s former leadership experience at the US Environmental Protection Agency supports clients seeking public affairs and policy guidance in the environmental arena.

JoAnne Golden

JoAnne Golden

Senior Vice President, Programs & GNA Partner

JoAnne brings over 10 years of experience in strategy development, policy analysis and advocacy, and clean transportation, specializing in electrification. As a trained policy and strategic initiatives expert, JoAnne pursues innovation-based solutions that will achieve client success with a focus on results and cost-effective solutions. She manages the agenda development for ACT Expo, oversees large and multi-faceted client projects, and leads a team of strategy, policy, and clean technology specialists. JoAnne has led large-scale funding efforts to accelerate transportation electrification, bringing her clients over $200 million in funding.

Tony Quist

Tony Quist

Senior Vice President, Events & GNA Partner

Tony has 25+ years’ experience organizing, trade shows and leading sponsorship & exhibitor sales programs for national and international trade shows and conferences spanning the transportation, energy, technology, first responder, aviation, recreational sports, professional beauty, aviation, mixed-use development, online and publishing industries. Tony launched the annual Advanced Clean Transportation (ACT Expo), North America’s largest Advanced Transportation Technology and Clean Fleet Event.

Kimberly Klonoski

Kimberly Klonoski

Vice President, Events

Kimberly Klonoski oversees the management and execution of client-hosted workshops and ribbon-cuttings, as well as GNA’s conference series. She has more than 10 years of experience in the event and hospitality industries including contract negotiation, and the management of venue, hotel, audio/visual, and catering contracts. She is a professional with extensive logistics experience impacting the visibility, reputation and profitability of events through strategic planning and tactical details. Kimberly has a bachelor’s degree from Valdosta State University. She is a member of the Coalition for Clean Air and Young Professionals in Energy.

Anne Irvani

Anne Irvani

Vice President

With nearly 10 years of experience leading the Events & Marketing Department at GNA, Anne Irvani has refined proficiency in the management of impactful events and client outreach projects. In a new role, Anne now focuses on cultivation of the ACT Expo brand and the development of teams responsible for the production of multiple event series, all designed to heighten the education and awareness of advancements in clean transportation. Anne holds a bachelor’s degree from Cornell University and a master’s degree from the University of Notre Dame.

Jon Leonard

Jon Leonard

Senior Vice President, Technical Services

Jon Leonard has 30+ years of experience with government-industry collaborations to assess, demonstrate, commercialize and deploy advanced low-/zero-emission vehicle technologies. He authored countless major studies involving low-/zero-emission heavy-duty vehicles using low-carbon transportation fuels. At GNA, Jon authored major studies on HDVs (on- and off-road) using renewable natural gas and renewable diesel. He also authored a study about sustainable aviation fuel as an emerging strategy to decarbonize commercial aviation.  Prior to joining GNA in 2013, Jon spent 15 years at TIAX, 10 years at the South Coast AQMD, and 10 years conducing hands-on emissions motor vehicle testing programs at two different laboratories.

>45%

Have Worked for a Nonprofit or Public Agency

Signa Oliver

Vice President, People & Culture

Signa has over 26 years of Human Resources, labor, employment and people operation senior leadership expertise. She has been a public servant (federal, state and local government) for half of her professional life. In the private sector, she has worked for non-profits, logistic & distribution companies and in automotive manufacturing. She holds a Bachelor of Science in Business Administration and Juris Doctorate degrees.

Jonathan Maroko

Vice President, Finance & Accounting

Jonathan Maroko has 16 years of experience in the financial services industry. He is a CFA® charterholder. Jonathan serves as the strategic advisor and external CFO for some of the most notable companies. Jonathan began his career in investment banking at Bank of America in New York. Subsequently, he worked as an investment analyst at Vanadium Capital, a long-short equity hedge fund. He then became portfolio manager at Mulholland Vista Capital Advisors, a global macro hedge fund, before shifting to private equity and advising startup companies. Jonathan has a B.S. in Finance and a B.S. in Accounting from Indiana University, and double-minored in Economics and Psychology.

Nate Springer

Nate Springer

Vice President, Market Development

Nate has nearly 20 years of experience in transportation and sustainability. He leads GNA’s sustainability and Environment, Social, and Governance (ESG) practice to advise companies on setting goals, building strategies, and communicating results. Nate launched and runs the ACT Fleet Forum of top fleets who share best practice on clean tech and the State of Sustainable Fleets, the first neutral resource for fleet owners on leading sustainable fuel and vehicle technologies. Previously he managed more than 50 corporate sustainability projects with Fortune 500 companies and led global initiatives on clean vehicles and shipping. Nate is fluent in Spanish and holds an MBA with High Distinction and an MS in Natural Resources from the University of Michigan.

Brianna Lawrence

Brianna Lawrence

Vice President, Programs

Brianna Lawrence manages GNA’s Funding 360 Program, which delivers intelligence for more than 500 active incentive programs that support the development and deployment of advanced transportation technologies in the United States and Canada. With a background in private and corporate philanthropy, Brianna has nearly 10 years of experience in developing complex projects, preparing and reviewing applications, and managing project implementation. Brianna holds a bachelor’s degree in Environmental Science from UCLA and a master’s degree in Public Administration with a concentration in Nonprofit Management from UNLV.

Our Team

Angela Amirkhanian

Senior Program Manager

Anthony Antonopoulos

Anthony Antonopoulos

Senior Digital & Email Designer

Stephane Babcock

Stephane Babcock

Director, Editorial & Partner Marketing

Jonah Berg-Ganzarain

Strategic Communications Specialist

Shirley Berrios

Talent Acquisition Partner

Mark Blakeley

Senior Associate

Jody Bonilla

Human Resources Business Partner

Gilbert Botham

Gilbert Botham

Senior Associate

Sharon Boutin

Sponsor & Exhibitor Manager

Anna Brackenhofer

Senior Associate

Barbara Brentano

Barbara Brentano

Manager, Engagement Marketing

Tiara Brown

Tiara Brown

Associate

Aric Burks

Aric Burks

Associate

7

Different Languages Fluently Spoken by GNA Team Members

Crystal Campbell

Senior Marketing Manager, Energy & Utilities

Jasmine Cannady

Digital Marketing Manager

Devin Cardona

Devin Cardona

Email Marketing Developer

Tony Choi

Tony Choi

Database Coordinator​

Rachel Clevers

Rachel Clevers

Associate

Bob Coale

Bob Coale

Senior Project Director

Sean Cocca

Sean Cocca

Director of Compliance

Mark Conolly

Mark Conolly

Program Manager

Erin Cornelius

Erin Cornelius

Program Manager

Ty Cratic

Ty Cratic

Senior Program Manager

Chris Davis

Associate

Tim Decker

Tim Decker

Web Developer

Luis Dominguez

Luis Dominguez

Senior Associate

115+

Total Countries Visited (We love to travel and gain global insights!)

Katherine Edgerley

Katherine Edgerley

Program Manager

Amber Fearon

Senior Director, Programs

Nicole Alcombright

Nicole Fiel

Senior Director, Engagement Marketing

Christian Francisco

Senior Program Manager

Emma Frantz

Emma Frantz

Program Manager

Owen Frazier

Owen Frazier

Senior Associate

Chloe Friedheim

Associate

Zach Friedlander

Associate

Kristen Gifford

Kristen Gifford

Senior Manager, Communications Strategy

Celeste Griffy

Celeste Griffy

Senior Director, Communications Strategy

Bodi Hamdan

Bodi Hamdan

Senior Associate

Denzel Holt

Denzel Holt

Junior Accountant

Sherylle Horton

Sherylle Horton

Administrative Assistant

Christian Hosler

Christian Hosler

Senior Associate

Evangeline Hsu

Evangeline Hsu

Office Manager & Executive Assistant

Sebastian Irby

Sebastian Irby

Program Manager

Kristina Ishchenko

Kristina Ishchenko

Digital Campaign Manager

James Javelosa

James Javelosa

Program Manager

Eleanor Johnstone

Eleanor Johnstone

Senior Project Manager

Sarah Kacmarsky

Sarah Kacmarsky

Strategic Communications Specialist

Anne Kim

Anne Kim

Accountant

Jarrod Kohout

Jarrod Kohout

Senior Director

Ian Lane

Ian Lane

Associate

Nolan Lee

Associate

Danny Leung

Danny Leung

Program Manager

Sophia Liebert

Sophia Liebert

Specialist, Database Marketing

Rodger Lueras

Art Director

Lawren Markle

Lawren Markle

Senior Manager, Communications Strategy

Leigh Middleton

Project Manager

Cherish Mumme

Associate

Joseph Navarro

Joseph Navarro

Associate

Flora Naylor

Associate

Peter Ogundele

Peter Ogundele

Senior Program Manager

Ade Oliyide

Program Manager

Colton Orr

Senior Associate

Juliana Rodriguez Ortiz

Juliana Rodriguez Ortiz

Program Manager

Eleni Petrow

Eleni Petrow

Program Manager

Henry Pines

Henry Pines

Program Manager

Ronald Pope

Ronald Pope

Senior Project Director

Hillary Rupert

Senior Director, Programs

Cacie Russell

Associate

Nocona Sanders

Nocona Sanders

Senior Technical Associate

Rebecca Schenker

Rebecca Schenker

Senior Director, Programs

Michael Schumer

Program Manager

Fernando Ochoa Servin

Fernando Ochoa Servin

Administrative Associate

Catherine Smith

Catherine Smith

Associate

Kali Staniec

Kali Staniec

Program Manager

Natalia Swalnick

Senior Director

Lyan Tassler

Lyan Tassler

Events Manager

Cary Welsh

Cary Welsh

Program Manager

Elexiss Winslow

Programs Administrative Assistant

Steven Wiseman

Steven Wiseman

Accounting Manager

Patti Wong

Patti Wong

Staff Accountant