Our Team

GNA is a diverse, but unified team of changemakers.

Working at GNA means collaborating beyond technical background, specialty, or expertise. To be successful, we adhere to a simple philosophy: build a team that is ready to redefine what is possible. 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 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 in the high horsepower industry, including projects in the marine, rail, mining, and oil and gas E&P sectors. He was the visionary who launched some of the nation’s leading alternative fuel conferences.

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 has 15+ years of experience leading marketing strategy for organizations spanning the transportation, energy and financial sectors—ranging from startups to globally recognized brands. 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. Sarah is a member of the Coalition for Clean Air, Heal the Bay, and Women of Renewable Industries & Sustainable Energy; she launched the annual “Women in Advanced Clean Tech” summit to spotlight female executives shaping the future of transportation.

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.

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.

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.

Nate Springer

Nate Springer

Senior Director, 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.

>45%

Have Worked for a Nonprofit or Public Agency

Fidel Quiralte

Fidel Quiralte

Director of Accounting & Finance

Michael Trust

Michael Trust

Director, People & Culture

Michael has been in Human Resources for over 30 years, and has additional experience in operations management. Michael’s industry experience includes local government, finance/banking, legal services, healthcare, higher education, renewable energy, real estate, and entertainment. Michael is a published author in the area of Human Resources, and is often sought out for his opinions on Human Resources matters. Michael holds a Master of Public Administration degree from the University of Southern California and a baccalaureate degree from the California State University at Long Beach. Michael is currently pursuing his Juris Doctorate part-time. Michael is certified as a Senior Professional in Human Resources (SPHR), a Professional in Human Resources – California (PHR-ca), a Society of Human Resources Management – Senior Certified Professional (SHRM-SCP), and as a California Certified Mediator. Michael has mentored students interested in Human Resources at the University of Southern California and at the California State University at Long Beach, as well as many professional Human Resources colleagues.

Our Team

Anthony Antonopoulos

Anthony Antonopoulos

Senior Digital & Email Designer

Stephane Babcock

Stephane Babcock

Director, Editorial & Partner Marketing

Jonah Berg-Ganzarain

Jonah Berg-Ganzarain

Strategic Communications Specialist

Gilbert Botham

Gilbert Botham

Senior Associate

Barbara Brentano

Barbara Brentano

Manager, Engagement Marketing

Tiara Brown

Tiara Brown

Associate

Aric Burks

Aric Burks

Associate

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

7

Different Languages Fluently Spoken by GNA Team Members

Erin Cornelius

Erin Cornelius

Senior Associate

Ty Cratic

Ty Cratic

Senior Program Manager

Chris Davis

Chris Davis

Associate

Tim Decker

Tim Decker

Web Developer

Luis Dominguez

Luis Dominguez

Senior Associate

Katherine Edgerley

Katherine Edgerley

Program Manager

Nicole Alcombright

Nicole Fiel

Senior Director, Engagement Marketing

Emma Frantz

Emma Frantz

Senior Associate

Owen Frazier

Owen Frazier

Associate

Kristen Gifford

Kristen Gifford

Senior Manager, Communications Strategy

Celeste Griffy

Celeste Griffy

Senior Director, Communications Strategy

Jazlyn Guerrero

Jazlyn Guerrero

Associate

Bodi Hamdan

Bodi Hamdan

Senior Associate

115+

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

Denzel Holt

Denzel Holt

Junior Accountant

Sherylle Horton

Sherylle Horton

Administrative Assistant

Christian Hosler

Christian Hosler

Senior Associate

Adam Hsu

Adam Hsu

Senior Associate

Evangeline Hsu

Evangeline Hsu

Office Manager & Executive Assistant

Sebastian Irby

Sebastian Irby

Program Manager

Anne Irvani

Anne Irvani

Vice President

Kristina Ishchenko

Kristina Ishchenko

Digital Campaign Manager

James Javelosa

James Javelosa

Senior Associate

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

Brianna Lawrence

Brianna Lawrence

Senior Program Manager

Nolan Lee

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

Jessica Masters

Jessica Masters

Director, LCFS

Evan Miranda

Evan Miranda

Program Manager

Joseph Navarro

Joseph Navarro

Program Coordinator

Peter Ogundele

Peter Ogundele

Senior Program Manager

Juliana Rodriguez Ortiz

Juliana Rodriguez Ortiz

Program Manager

Eleni Petrow

Eleni Petrow

Program Manager

Henry Pines

Henry Pines

Senior Associate

Whitney Pitkanen

Whitney Pitkanen

Senior Manager, Communications Strategy

Ronald Pope

Ronald Pope

Senior Project Director

Nocona Sanders

Nocona Sanders

Senior Technical Associate

Rebecca Schenker

Rebecca Schenker

Senior Director, Programs

Fernando Ochoa Servin

Fernando Ochoa Servin

Administrative Associate

Catherine Smith

Catherine Smith

Associate

Kali Staniec

Kali Staniec

Program Manager

Lyan Tassler

Lyan Tassler

Events Manager

Isabel Wellington

Isabel Wellington

Associate

Cary Welsh

Cary Welsh

Senior Associate

Steven Wiseman

Steven Wiseman

Accounting Manager

Patti Wong

Patti Wong

Staff Accountant