Harnessing Media to Inspire Positive Change
The Green Media Summit is a non-profit event that unites the brightest minds in media and sustainability to collectively navigate challenges and accelerate action towards meaningful change and a more eco-friendly future.
From insightful panels to game-changing keynotes, the Green Media Summit explores how the media industry can spearhead sustainability and take bold actions that shape a more ethical and sustainable future for all. With exclusive content from experts and thought leaders, the Green Media Summit offers a front-row seat to the next revolution in media.
2025 Speakers
Hear from sustainability leaders, ad tech experts and key decision makers from brands, agencies and publishers at the upcoming Green Media Summit.
Ed Begley Jr.
Environmental Activist
Emmy Award-Nominated Actor
Faced with growing environmental challenges, Ed Begley, Jr. exemplifies personal action by championing sustainability in Hollywood, serving on environmental boards, earning numerous accolades, and living in an eco-friendly home near Los Angeles.
As environmental issues become more pressing, there are two possible responses: forget it and hope that government and corporations will figure it out, or take action yourself.
In the “take action yourself” camp, a few individuals are leading the way. One such person in California is Ed Begley, Jr.
Turning up at Hollywood events on his bicycle, Ed has been considered an environmental leader in the Hollywood community for many years. He serves on the boards of The Coalition For Clean Air, and The Thoreau Institute.
His work in the environmental community has earned him a number of awards from some of the most prestigious environmental groups in the nation, including the California League of Conservation Voters, the Natural Resources Defense Council, The Coalition for Clean Air, Heal the Bay, Santa Monica Baykeeper, and the Cesar E. Chavez Foundation.
He currently lives near Los Angeles in a LEED Platinum home, rides his bike and takes public transportation.
Wawa Gatheru
Founder & Executive Director,
Black Girl Environmentalist
Wawa Gatheru is a GenZ climate activist and Rhodes Scholar passionate about cultivating a climate movement that is made in the image of all of us.
She is the founder and Executive Director of Black Girl Environmentalist, the only national organization dedicated to addressing the pipeline and pathway issue for Black girls, women, and gender expansive individuals in the climate sector. Under her leadership, BGE has grown as a trusted, national organization that has worked with 80 corporate and non-profit partners and hosted 120+ events across 12 HUB cities. In the summer of 2024, BGE launched the Hazel M. Johnson Fellowship Program – the first climate pipeline program created for and by GenZ of color. With a membership of over 2,000, Forbes has called Black Girl Environmentalist “one of the largest Black youth-led organizations in the country”.
Outside of her role at BGE, Wawa sits on boards and advisory councils for the Environmental Media Association, Climate Power, Brian Eno’s Earth / Percent, Sound Future, National Parks Conservation Association, and EarthJustice. Wawa is also an inaugural member of the National Environmental Youth Advisory Council of the US EPA – the first federal youth-led advisory council in US history. In her role, Wawa advises Administrator Reagan on how to increase the effectiveness of the EPA’s efforts to address a range of environmental issues impacting youth.
For her work, Wawa has been recognized as a Glamour College Woman of the Year, a L’Oreal Paris Woman of Worth, a Climate Creator to Watch by Harvard, and has been named to several notable lists – including Forbes 30 under 30, Ebony Power 100, the Independent’s Climate 100, Grist 50, and AFROTECH Future 50 – and is an established public speaker who has presented at Harvard University, The Washington Post Summit, the New York Times Climate Forward, and conferences around the world. She most recently featured on the January 2023 digital cover of Vogue alongside Billie Eilish and 7 other climate activists.
Micheal Mezzatesta
Climate Activist
and Economist
Michael Mezzatesta is an influential climate activist and economist, known for engaging younger audiences on the urgency of climate action, the climate crisis, and sustainable economic solutions.
Recently named one of 2024’s “Climate Creators to Watch” by Pique Action, and featured in the Washington Post and HuffPost, Michael blends academic rigor with relatable, accessible content that resonates with policymakers and everyday citizens alike. Michael actively leverages social media to amplify his impact and advocate for a sustainable future. His videos span the intersections of economics, climate, finance, and culture; by highlighting intersectional issues and pushing for systemic solutions, he encourages people to imagine a better socioeconomic system.
With a degree from Stanford and years of experience consulting for forward-thinking startups, Michael is a leading voice on reshaping our economy to prioritize people and the planet. His expertise spans both economics and environmental activism, and he’s actively involved in movements like the Post Growth Institute and initiatives like The Cool Down, which help businesses and individuals transition to a sustainable economy.
John Osborn
Director
AdNetZero
John is a transformational leader, with extensive experience driving strategic and financial growth.
He has done so for a number of agencies, clients, Fortune 500 companies, public corporations and nonprofits.
John was recently appointed to lead Ad Net Zero USA as the Director of the coalition, with focus on establishing and growing its supporter base and delivering on its mission to unify the advertising industry around actions that will drive towards net zero carbon emissions from the development, production and media placement of advertising.
Katy Bolan
Sustainability Executive
Google
Katy Bolan is a sustainability executive with 20 years of experience in design and technology.
She has spent a decade at Google and drives sustainability for Google TV and Platforms & Ecosystems. Katy is also passionate about the built environment and interior design, and is LEED accredited and holds an MBA with certifications from Pratt, MIT, and Harvard focused on sustainability.
Christopher Moscardi
Director of Strategy & Campaigns
EPIC
With over 15 years in marketing and advertising, Chris has worked with global brands like Meta, Mack Trucks, Intel, and Salesforce, harnessing storytelling to drive positive change.
An MBA graduate from the University of Washington, he excels at blending brand strategy, culture, technology, and sustainability.
As VP of Client Experience at Green Thread from Horizon Media, Chris leads marketing and development, and chairs the Thought Leadership and Communications workstream for HorizonEco’s annual Sustainable Media Summit. He is also the Director of Strategy & Campaigns at New Zero World, an NGO focused on overcoming climate action barriers through creativity. Chris is involved with the Earth Public Information Collaborative (EPIC), which delivers global climate campaigns. He contributed to New Zero World’s white paper A New Era in Climate Communications and authored Still Waiting for My Jetpack, exploring marketing’s role in technological and cultural shifts.
Dagmara Szulce
Managing Director
International Advertising Association
Dagmara joined the International Advertising Association (IAA) in 2017 as the Global Executive Director in charge of overseeing the IAA business across 56 countries
As a global leader in the marketing and communications industry, she believes social and environmental responsibility are as important as profit. She has used this belief system to transform the IAA brand and it’s culture over the last 4 years.
Dagmara has a 22 year track record building & transforming category leading brands globally and in the US. She has unique expertise in crafting living brand ecosystems with a key objective of igniting ongoing consumer desire and irrational loyalty. Her Clients included: P&G, Unilever, Pfizer, Frederic Fekkai, Nespresso, Estee Lauder, Ralph Lauren, Taylor Swift Fragrance, The Diamond Trading Company/DeBeers, Steinway & Sons, The Corcoran Real Estate Group, Roberta Roller Rabbit.
She is a board member at ACT Responsible, MBA teacher at Baruch College, speaker and advisor to CMOs/CEOs.
Natalia Vega
Founder & Executive Director
New Zero World
Natalia is an experienced advertising executive and leader in media, dedicated to driving social and environmental change through creative content and campaigns.
She is a former advertising executive and distinguished leader in media for social and environmental impact, bringing over 30 years of invaluable experience in creative development, production of content and campaigns, dedicated to influencing global culture and instigating positive change. She has spearheaded impactful campaigns and unconventional initiatives, focusing on fostering a sustainable, regenerative, and socially responsible future, leaving a lasting imprint on the landscape of media and social impact. Recognized for her ability to drive collaborations with international partners across diverse sectors, from progressive corporations to humanitarian nonprofits and governmental organizations, Natalia is the Founder of The New Zero World, launched in 2014 to support the United Nations Sustainable Development Goals providing innovative solutions that engage people in solving the world’s biggest challenges and to catalyze climate action through a radically new communications strategy.
Natalia is the author of the white paper “A New Era in Climate Communications” as a collaborative effort spanning more than 60 contributors and organizations to propose a novel strategy for effective climate change communications across institutions and sectors. She lives in Boulder, Colorado and currently supports a global effort “Earth Public Information Collaborative” to promote public literacy and engagement in tackling the planetary emergency.
Nannette Lafond-Dufour
Chief Impact Officer
Publicis Groupe
Nannette Lafond-Dufour is Chief Impact Officer of Publicis Groupe. In this newly created global role, Nannette is responsible for driving immediate impact across the Groupe’s long-term ESG commitments.
Previously, Nannette was Global Chief Client Officer at McCann Worldgroup. She provided strategic and operational oversight for all of McCann Worldgroup’s global and regional clients. She managed end-to-end communications capabilities, crafted bespoke solutions, and ensured that clients received the necessary resources vital to their business success.
Nannette also inaugurated the role of Global Chief Sustainability Officer. In addressing McCann Worldgroup’s environmental footprint across 100+ countries, Nannette partnered with clients to meet urgent sustainability goals and led the team which enabled McCann’s responsible stewardship. She set vision, drove strategy, and the change management required to transform the company’s operations and culture to achieve its ambitious sustainability goals.
In her 30-year career, Nannette has been responsible for planning and executing global brand platforms for L’Oréal, P&G, Nestlé, Pepsi, Philips Electronics, AstraZeneca, and Pfizer Pharmaceuticals among others. Prior to joining McCann, she was Global Business Director for the Johnson & Johnson businesses at DDB Paris and New York, guiding J&J’s beauty brands globally.
Named to Advertising Age’s “Women to Watch” list, which recognizes trailblazing women in advertising, marketing, and media, Nannette is renowned for strong client relationships, measurable results, deep business acumen, and collaborative leadership.
A native of Detroit, she is “French” by marriage and has spent 10+ years living and working in Paris. She currently lives in Paris with her two children. When not working, she enjoys film, music, travel, ingesting large quantities of good coffee, and, surprisingly to her, “hot yoga.”
Oleg Korenfeld
Chief Technology Officer
CMI Media Group
Oleg Korenfeld’s 20+ year professional expertise cuts across all angles of the digital advertising ecosystem - ad technology, demand and supply sides.
Recognized as a transformative AdTech leader, Oleg brings deep marketing data and technology experience, holding global executive positions at companies such as GroupM and Publicis. In his role as CTO, he helps CMI Media Group, Compas and their clients continue the momentum of decades of disruptive innovation in media as well as implementation of tech and data best practices on a global scale. He is responsible for overseeing the agencies’ global automation, technology and data strategy and development, while leading the company’s continued innovations in tech-enabled performance and precision media solutions.
Jennifer Oliveras
Sr. Director- Global Partnerships and Brand Activation
Indeed
Jennifer Oliveras specializes in integrated marketing partnerships, events, and brand activations.
She excels at creating impactful experiences and collaborations that amplify brand presence while driving meaningful connections with audiences.
Terence G. Kawaja
CEO & Founder
LUMA Partners
Terence Kawaja is CEO & Founder of LUMA Partners, a leading strategic advisory firm focused at the intersection of media, marketing and technology.
He is a seasoned investment banker with more than 25 years of experience and has advised on over $300 billion of transactions, including some of the most pivotal deals in the media and tech industries. Throughout his career, Terry has leveraged deep industry knowledge to take a strategic approach to deal making rather than chase transactions. The best compliment people say is that he thinks like a principal.
Terry is both a recognized expert in the Internet and media sectors and also a popular speaker at leading industry conferences, frequently using humor to aid substantive presentations. Besides spending time in board rooms and on stages, Terry enjoys guest lecturing at universities, including Stanford, Columbia and NYU. Terry has a straightforward style and is never afraid to tell it like it is.
Previously, Terry headed Media M&A at Citigroup and Credit Suisse and had a short stint as a public company CFO. He lives in NYC with his wife and two boys.
Alexander Stone
SVP, Advanced Video & Agency Partnerships
Horizon Media
For the past 5 years, Alex Stone has been the SVP Agency Partnerships & Advanced Video at Horizon Media. In this role, he/she is responsible for the development of agency level partnership agreements with key media, data, and technology vendors across all marketplace mediums.
Additional specialty groups within Alex’s purview include the Center of Excellence for Advanced Video and Diverse Owned and multicultural targeted media relationships. Alex developed the agency’s strategic approach to partnerships maximizing negotiations with key partners emphasizing areas of interest that provide the greatest value to the agency’s clients in the form of innovation, competitive rates, research, data, programmatic and education.
Professional Background: Alex has spent the last 10 years at Horizon Media working across numerous CPG, QSR, and Retail accounts. Prior to Horizon, Alex spent 9 years working at Omnicom/OMD. There, Alex was a Digital Director overseeing Digital Strategy for Lowe’s, Dick’s Sporting Goods, and Chobani accounts. Additionally, Alex helped develop and roll out the Enterprise Partnerships team at Omnicom responsible for Retail, Travel, and Auto partner negotiations across OMD and PHD.
Education: Alex Stone holds an MBA from Baruch College (2013) and a Bachelor of Science Degree from Binghamton University majoring in Business Marketing with a Geography Minor (2005)
Skills and Expertise: Negotiation, Digital strategy, collaboration, programmatic media, Online and Streaming Video, Supply Path Optimization
Leadership Style: A Macro-manager that is not afraid to roll-up his sleeves to get into the weeds on projects if/when necessary. Alex likes to provide guidance and wisdom while giving autonomy to his team members for the expression and ideas and concepts that will better our clients and Horizon.
Achievements and Awards: 2024 IAB Service of Excellence Award, 2017 Broadcast and Digital Cable All-Stars, Digital Trading Awards US 2016, 2016 Media Plan of the Year, Ad Week, 2011 4th Annual Vibrant Award Winner
Industry Involvement: Speaking Engagements with the IAB, Digiday, AdWeek, Amazon Unboxed, Brand Safety Summit, Breaking Through the Mayhem Podcast (Sightly). Advisory Boards for: Go Addressable Agency Council, Vox Media Agency Council, Comcast Advertising Agency Leadership Council, New York Times Advertising Product Council Member
Vision for the Company: I see a future Horizon that is infused with AI to better support our account needs from a planning, targeting, and measurement perspective. The visualization of the data and the power of optimization will be paramount. Our ability to develop the right relationships with the right partners across the marketing ecosystem will be more important than ever before. I see a future in which there is more balance between Art and Science opening up new avenues for agency creativity.
Personal Attributes:
I have a proven track record of delivering value to our clients and partners through competitive rates, research, education, and first-to-market opportunities. I am passionate about building and managing high-performing teams, working on diverse and exciting brands, and staying ahead of the curve in the ever-changing digital media landscape. My goal is to leverage my credentials, competencies, and network to create impactful and measurable outcomes for Horizon and its clients.
Community and Social Involvement: CHHANGE.org – I have been on the board for the Center for Holocaust, Human Rights, and Genocide Education for the past 6 years helping raise funds through our annual golf tournament charity event.
Quotes/Guiding Philosophies:
- “May your day be filled with more sun light and less blue light.” – Alex Stone
- “May the optimism of tomorrow be your foundation for today” – Wale
Frank Maguire
SVP, Product Marketing & Sustainability
Sharethrough
Frank has spent over a decade at Sharethrough conducting research to better understand how humans respond to advertising to help brands and agencies adapt their unique advertising challenges to ever-evolving media consumption behaviors.
In order to accelerate sustainability initiatives at Sharethrough and across the advertising industry, he recently completed his “Sustainability in Business” certification from Harvard Business School. He has also led multiple sustainability initiatives, including helping to launch the ad industry’s first Green Media Product “GreenPMPs,” hosting the advertising industry’s first Green Media Summit and speaking at Climate Week NYC.
He is a digital advertising industry veteran, beginning his career working for clients including Nestle, Pfizer and Wyndham on the agency side and then opening up and growing Sharethrough’s East Coast headquarters in NYC.
More Speakers Coming Soon!
2025 Agenda
Morning
Keynote
The Intersection of Change: Climate, Culture, and Economy
Brand Panel
Sustainability Talks: Inside the Brand Transformation
Industry Panel
Combating Misinformation and Driving Cultural
Keynote & Fireside Chat
Sustainability in Action: Case Study
Afternoon
Keynote
From Screen to Green: Ed Begley Jr.'s Environmental Journey
Panel
Transform the Entertainment Industry's Environmental Impact
Keynote & Fireside Chat
Changing the Narrative: Elevating Black Voices in the Climate Movement
Panel
Media with a Mission: Agency Updates on Tackling Climate Change
2025 Partners
Grateful for our partners who champion our vision and share a commitment to sustainability in media. We are proud to have them by our side!
Supporting Sponsor
2024 by the Numbers
Attendees
Companies
Speakers
Tons of CO2 Compensated
2024 Attendees Included…
… and more!
Hear From Industry Leaders in Advertising
Keynotes
Gain access to exclusive content from experts and thought leaders. Get a front-row seat to the next revolution in media.
Panels
See insightful panels on how the media industry can spearhead sustainability and take bold actions that shape a better future.
Testimonials From Past Attendees
“The Green Media Summit, presented by Sharethrough highlighted the powerful intersection of advertising, sustainability, and the urgent need for systemic change to combat climate issues. There’s no doubt that addressing the climate crisis requires bold, ambitious action from the advertising industry.“
Growth Marketing Manager
“A pervasive theme at Sharethrough‘s Green Media Summit was working towards an ecosystem that rewards businesses making better decision about emissions. This is particularly critical for publishers who want to lean in but are (reasonably) weary of negatively impacting performance.“
SVP Programmatic Revenue & Strategy
“Thank you to the team at Sharethrough for putting on a fantastic event, with speakers that inspired climate action not just within the advertising industry, but also as a culture movement. I have no doubt that this gathering accelerated the drive in all of us to make our small corner of influence in the world a little greener.“
Director, Social Impact – Sustainability
“[The Green Media Summit] hosted a productive discussion on sustainability from the agency point of view. The event brought together some of the biggest names in the industry, including GroupM dentsu IPG Mediabrands Horizon Media and Publicis. Their collective insights and efforts towards sustainability are sure to bring about positive change.“
Vice President – Director Strategic Alliances and Partnerships
“The standing-room-only event showed the resolve of the ad tech community in the United States to come together and answer the call to create a greener ecosystem in the context of the global push toward net-zero greenhouse gas emissions.”
Director
“Amazing day at the Green Media Summit. Kudos to the Sharethrough team for putting together a great day of education around sustainability in media with a great audience. If you are serious about reducing your carbon emissions, this was a great day and our industry needs more minds thinking about this area. We do have a planet to save.”
CEO
“I signed up to today’s Green Media Summit with no real understanding of the connection between the ad industry and sustainability. In the first 5 mins I learnt that the carbon emissions generated by the internet are greater than the aviation industry 🤯 I walk away impressed and inspired at the industry’s self-led call to adopt standards and solutions towards net zero, with the likes of John Osborn and Ad Net Zero leading the charge.”
Strategic Advisor and Executive Attorney
“Great discussion this morning at the Green Media Summit with Brian O’Kelley from Scope3 and Michael Burgi from Digiday. Marketers have a financial problem and an environmental problem. It is very encouraging to hear leaders across the ecosystem talk about meaningful actions the industry can take now.”
CMO
“Congrats to the Sharethrough team on a fantastic event! So much knowledge and collaboration! I’m so inspired – let’s solve this!”
EVP, Global Head of Brand Assurance
“Inspiring sessions, chats and hangs from Sharethrough’s #greenmediasummit Grateful to be in a room with so many leaders committed to taking action and making a positive impact in the industry. Also cool to get a shout from stage for the work our own Yahoo sustainability task force has started! 🌎🌳💻 Let’s keep going!
Executive Creative Director, Global Partnerships, Branded Content
Speaking & Sponsorship Opportunities at the Green Media Summit
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