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.
Michael 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.
Katie Usiak
Ads Sustainability Global Product Solutions Lead
Google
Katie joined the Ads Sustainability group at Google to help support advertisers' sustainable media needs.
After spending 8 years as an Advertising Consultant for CPG and Restaurant brands at Google, Katie decided to pursue Sustainability more directly. After completing a Master’s program in Sustainability Leadership and volunteering on a few Sustainability initiatives like Google’s Single-Use Plastics Challenge and Google Cloud sustainability efforts, she joined the Ads Sustainability group at Google to help support advertisers’ sustainable media needs. In her free time, she loves playing with her Great Dane and snacking on a good bowl of soup.
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 award-winning climate communicator and the Founder of New Zero World.
With over 30 years of experience in advertising and social impact communications, she has created campaigns for top brands, pushing creative boundaries and elevating purpose-driven work.
She’s currently the Executive Director of Global Campaigns at the Earth Public Information Collaborative (EPIC), where she is leading a global effort to put the eyes of the world in Brasil for the upcoming COP30. Natalia lives in the beautiful mountains of Boulder, Colorado.
Gregory Joseph
VP, Inventory Development
StackAdapt
Greg Joseph is the VP of Inventory Development at StackAdapt. In the role, he leads supply-side strategy and oversees publisher partnerships across CTV, DOOH, Audio, Mobile, and Display.
Before joining StackAdapt, Greg held various sales and demand partnership roles at Freewheel (Comcast), Magnite (formerly Rubicon Project), and DoubleVerify, among others.
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
Tasha Lenton
Associate Director, Global + EMEA Media
Spotify
Tasha Lenton is an experienced Marketer with more than 18 years in the industry. Having worked agency-side, delivering media strategies for high profile clients such as Burberry, Brown Forman, H&M and Kenvue (formerly Johnson & Johnson), Tasha moved brand-side to join Spotify’s global media team, leading EMEA+SSA as well as key Global workstreams.
Bringing together her environmental interests with her industry expertise and love of innovation and creativity, Tasha now leads sustainability across Spotify’s global marketing. She created the company’s first global marketing sustainability strategy, and is already securing wider recognition for these efforts, winning ‘Best Practice in Sustainable Media Planning’ at the 2024 AdNet Zero Awards.
Tasha believes that when it comes to climate work, the only way to drive meaningful impact is to make it fun, inclusive and simple – empowering people to enact change.
Stephanie Helen Scheller
Managing Partner Sustainable Solutions EMEA
Omnicom Media Group
Stephanie Helen Scheller is co-founder of OMG Sustainable Solutions and, as Managing Partner Sustainable Solutions, has been responsible for the sustainability consultancy at Omnicom Media Group since the beginning of 2022.
From delivering sustainability knowledge to developing customized end-to-end sustainability strategies for clients and media partners, she, along with her team of sustainability experts, spearheads ecological behavioral changes and fosters long-term sustainability within organizations. As a committee member of the GMSF workstream and a participant in the EACA Sustainability Taskforce, Stephanie Helen Scheller passionately advocates for sustainability within the media industry and across conferences. Previously, she was responsible for corporate development at Omnicom’s management consultancy bynd for four years.
Her long-term objective is the sustainable transformation of the media and marketing industry, achieved by promoting sustainable decision-making and fully integrating these practices into day-to-day business operation.
James Tarone
Director Programmatic and Video
Pfizer
James has spent 17 years working in the digital media arena, with a special focus on pharmaceutical marketing. He has spent the past 5 years on Pfizer’s internal media team, serving several roles across brand planning, operations, and digital subject matter expertise.
More recently, James has been responsible for Pfizer Media’s programmatic practice, overseeing full-portfolio activation of DTC and HCP cross-channel media across 44 brands. He especially enjoys managing a team of programmatic specialists, providing strategic support for all brands across planning, buying, optimization, and reporting. He developed Pfizer’s overarching programmatic framework, inclusive of buying approach, platform selection, supply path optimization, measurement, and sustainability efforts (all in partnership with Publicis, Pfizer’s agency of record).
Prior to his time at Pfizer, James spent 9 years at Carat working on the Pfizer consumer business, and 3 years at Horizon Media covering a variety of accounts across pharmaceutical, healthcare, and CPG.
Brian O’Kelley
CEO and Co-Founder
Scope3
Brian O’Kelley is CEO and co-founder of Scope3, the source of truth for supply chain emissions data. A respected entrepreneur and executive with a track record of building companies that have defined and led multi-billion dollar categories, Brian was the co-founder and CEO of AppNexus through its $1.6B sale to AT&T in 2018.
He co-founded Waybridge, a supply chain technology company, and served as CTO of Right Media through its successful acquisition by Yahoo. Credited with the invention of programmatic advertising and the online ad exchange, Brian is deeply committed to technology-driven innovations that benefit society while improving the health of the planet. Brian is an active board member of Tech:NYC.
Brian has been named to Crain’s 40 Under 40, Adweek 50 and Silicon Alley 100 lists, holds multiple patents, and was recognized as an E&Y Entrepreneur of the Year in the New York region in 2012. Brian was an early supporter of Girls Who Code and the Marshall Plan for Moms and is dedicated to making the technology industry more inclusive. Brian has a B.S.E. in Computer Science from Princeton University. He lives in Brooklyn with his wife, two daughters, and two cats.
Chandra Cirulnick
Vice President of Global Supply Partnerships
Yahoo
As the Vice President of Global Supply Partnerships at Yahoo, Chandra Cirulnick is responsible for making connections between Yahoo DSP's advertising customers and digital media owners.
Her organization handles joint business development with premium publishers through their preferred exchange and through Yahoo Backstage, a direct-to-publisher supply offering in Yahoo DSP, partnership development and integration management with exchanges, proactive merchandising of deal opportunities, deal curation and activation on behalf of advertisers, and the supply-side expansion of Yahoo Identity Solutions.
Chandra has held a number of roles within the organization since joining Yahoo in 2015 (then AOL), including leadership of Yahoo SSP Publisher Sales and Verizon Media Exchange Buyer Development. Prior to that, she spent several years as a Specialist Sales Executive at Microsoft Advertising, with focuses including the Microsoft Ad Exchange, Windows & Mobile Ads in Apps, and Advanced Audience Targeting, after beginning her career in radio advertising sales.
Francis D’Hondt
SVP, Addressable Health
KINESSO
Francis currently works out of the KINESSO (a branch of IPG) New York office, where he oversees the pharmaceutical practice as the Senior Vice President of Addressable Health.
In his 11+ years at IPG, Francis has run addressable campaigns across verticals including retail, CPG, financial services, entertainment, and more. He began to focus on the pharma space in 2017, and has since spearheaded teams that have crafted innovative and successful omni-channel campaigns across multiple leading pharma advertisers in both the DTC and HCP realms. Francis has primarily worked in the programmatic space, but added search and social to his remit in 2022.
Francis has helped KINESSO (and IPG as a whole) vastly grow its pharma portfolio over the last five years, and is especially passionate about continuing to bring the latest advancements in addressable tech and measurement solutions to all of these advertisers.
Martin Bryan
Global Chief Sustainability Office
IPG Mediabrands
Martin Bryan is the Global Chief Sustainability Officer of IPG Mediabrands, overseeing the development of the holding company processes and products enabling the influential media network to drive sustainability via the five-point climate action plan and strategy he launched for the group.
A graduate of the Yale School of Management’s Sustainability in Business Executive Education program, he is a passionate, proactive, and organized champion of corporate efforts to give back and better our clients, people, environment, and world. Some practice highlights include launching the industry’s first Climate Action Marketplace, enabling seamless sustainable media activation in programmatic, reducing emissions by 31% in the USA in year one. Additionally, he developed and launched the industry’s first Climate Action Accelerator Program which is designed to provide climate solutions for media vendors and clients alike, such as renewable energy, measurement and climate research – at a discount.
Prior to developing and leading the global Sustainability practice, Martin joined the agency in 2011 and led the strategy practice of the J&J business since 2018 after returning from a yearlong sabbatical in which he traveled the world with his partner – at times volunteering on regenerative, organic farms.
He is the media working group co-chair of Ad Net Zero, the industry organization focused on driving climate action and developing an industry standard for emission measurement in media, and is a Climate Advocate Lobby Volunteer with the Citizens’ Climate Lobby – working to drive climate action legislation in the U.S. Martin lives in Morristown, NJ with his partner, two dogs, chickens and is an avid gardener and a Cornell University-certified master beekeeper.
Guy Jones
Co-founder
The GoodNet
Guy is co-founder of The GoodNet, the ESG data business that enables brands to achieve both their marketing outcomes and ESG goals.
Their platform, GoodIQ, provides customers the ability to plan, activate and measure media against a broad range of ESG and performance metrics at scale.
Prior to founding The GoodNet, Guy led the growth of the global digital audio and OOH platform, DAX. Over a 20 year career in digital media he has also held senior roles at businesses including The Guardian and eBay.
Sam Mellor
VP of Commercial Marketing and Growth
BBC
Sam Mellor is an omnichannel transformation marketing executive with 20 years’ experience driving innovation and growth for media, consumer, and technology enterprises.
As VP, Commercial Marketing and Growth, Sam proudly oversees Integrated and Product Marketing, Research, Trade Marketing, Commercial Data Strategy and Media Strategy for BBC’s North American Ad Sales Organization. She is responsible for translating BBC’s Changemaker audience and editorial insights into a high-performing enterprise brand that delivers business-moving outcomes for partners while adding value to BBC’s consumer experience.
Prior to BBC, Sam served as Vice President, Brand Marketing and Head of Retail at Everlywell, a leading healthcare technology company, where she led internal and external teams in brand transformation strategy and cross-channel growth.
Before Everlywell she served as Vice President of Digital Marketing and Ad Product Development Marketing at Hearst and has held marketing leadership positions at top-tier media and communications firms including Condé Nast, Discovery Communications, NBC Universal and Porter Novelli.
Adam Lake
Head of Communications, North America
Climate Group
Adam is based in New York and leads on communications, media, and engagement across Climate Group’s work in North America. This includes overseeing communications for their sustainability initiatives, government engagement, and core activations such as the US Climate Action Summit and Climate Week NYC.
Prior to this Adam served as Head of Climate Week at Climate Group, leading Climate Week NYC for six -years with oversight of brand, development, content, communications, and partnerships. This role involved growing Climate Week NYC to become the largest climate event of its kind, negotiating a range of partnerships with NYC, the media, and NGOs, working closely with international partners to ensure its integration as a major moment on the climate calendar.
In previous roles, Adam served as Head of Communications for the International Rescue Committee, Head of Communications for UK poverty charity Turn2us, advisor to the Press Complaints Commission media regulatory body, communications lead in UK Parliament, and as a freelance writer and editor for various publications. He has contributed as a spokesperson on CNN, BBC, Sky News, Channel 4 News, ITV, BBC Radio 4 and various international outlets. For five years he has sat on the Board of Directors for Lewisham Refugee & Migrant Network (LRMN), and currently serves as a Trustee for the Impact Communications Institute.
Catherine Perloff
Reporter
The Information
Catherine is a reporter covering media and advertising at The Information, where she focuses on the ad businesses of large tech companies.
Previously, she covered platforms and programmatic advertising at Adweek, and has written about topics like finance, wealth and startups for publications such as Inc. and Forbes.
Shyla Raghav
Chief Climate Officer
TIME
Shyla Raghav is the Chief Climate Officer, TIME. She has had a long career working on both climate change adaptation and mitigation, with a focus on international policy and natural climate solutions.
Her background includes serving as Vice President of Climate Change at Conservation International, and previously held roles at the World Bank, Adaptation Fund, United Nations Development Programme, United Nations Framework Convention on Climate Change. She was named an InStyle BadAss woman in 2019, a Grist Top 50 Fixer, a AAAS/IfTHEN Ambassador for women in STEM, and has been featured on CNN, Vice News, and Elle Magazine.
Matt Clark
VP, Strategic Partnerships
FreeWheel
Matt Clark is the Vice President of Strategic Partnerships for FreeWheel, a global technology platform for the TV advertising industry, where he leads the team responsible for developing and managing the company’s relationships across the data, measurement, programmatic, and advertising technology ecosystem.
In this role, he formulates strategic approaches to evolving partnerships with key supply and demand partners, ensuring these collaborations drive value for FreeWheel and its clients. He also oversees complex negotiations that impact revenue, costs, and interoperability, while representing the partnerships function within FreeWheel’s core product leadership teams, including the FreeWheel TV Platform and Beeswax.
Additionally, Matt serves as the primary liaison for FreeWheel’s broader partnership efforts within Comcast Advertising, helping to align cross-portfolio negotiations and strategic initiatives. Matt joined FreeWheel in 2021 as part of its acquisition of Beeswax, where he was Vice President of Partnerships and led all new and existing exchange and data partnerships, as well as Beeswax’s Programmatic Cloud. Prior to Beeswax, he served as Senior Vice President of Product Strategy at Publicis Media, where he developed solutions that guaranteed performance outcomes for advertisers. With nearly 20 years of experience in advertising technology, he has also held leadership roles at Quantcast and Undertone. Throughout his career, Matt has played a key role in transformative industry initiatives. His team led FreeWheel’s partnership with LiveRamp to bring person-based identity solutions to FreeWheel publishers and spearheaded the integration of Magnite as a demand partner.
He was also instrumental in Comcast’s acquisition of Beeswax, overseeing diligence processes and legal coordination. As part of FreeWheel’s integration, he led efforts to merge partnership portfolios across FreeWheel and Comcast, ensuring strategic alignment and operational efficiency. Matt also speaks often on industry stages and represents FreeWheel in the press. Matt earned a Bachelor of Science in computer science from the University of California San Diego and a Master of Business Administration from the University of Southern California’s Marshall School of Business. He resides in the New York metropolitan area with his family.
Ali Wendroff
VP, Demand Partnerships
Sharethrough
Ali is the VP of Demand Partnerships at Sharethrough. Packing 10+ years of experience in Ad Tech, she specializes in bridging Supply and Demand to facilitate growth of strategic partnerships in collaboration with Sales and Account Teams Globally.
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.
2025 Agenda
8:00 AM – 8:50 AM ET
Registration & Breakfast
Coffee & an assortment of freshly baked croissants
9:00 AM – 9:15 AM ET
Opening Remarks
Frank Maguire
SVP, Product Marketing & Sustainability at Sharethrough
9:15 AM – 9:45 AM ET
Keynote
Beyond Doomsday: How Culture, Industry, and Climate Action Can Build a Better Future
Michael Mezzatesta
Climate Activist and Economist
9:45 AM – 10:10 AM ET
DSP Panel
Greener Ad Tech: The DSPs' Role in Building a Low-Carbon Advertising Ecosystem
Ali Wendroff (Moderator)
VP, Demand Partnerships at Sharethrough
Greg Joseph
VP, Inventory Development at StackAdapt
Chandra Cirulnick
VP of Global Supply Partnerships at Yahoo
Matt Clark
VP, Strategic Partnerships at FreeWheel
10:15 AM – 10:45 AM ET
Coffee Break
10:45 AM – 11:20 AM ET
Disinformation Panel
Combating Misinformation and Driving Cultural Change
Chris Moscardi (Moderator)
Director of Strategy & Campaigns at EPIC
Dagmara Sulzce
Managing Director at International Advertising Association
Natalia Vega
Founder & Executive Director at New Zero World
Sam Mellor
VP of Commercial Marketing and Growth at BBC
Shyla Raghav
Chief Climate Officer at TIME
11:20 AM – 11:40 AM ET
Keynote
Research Results: Sustainable Messaging's Impact on Consumer Purchase Behavior
Martin Bryan
Global Chief Sustainability Officer at IPG Mediabrands
Frank Maguire
SVP, Product Marketing & Sustainability at Sharethrough
11:40 AM – 12:00 PM ET
Workshop
The Green Action Workshop: 3 Steps to a Low-Carbon Media Future
Collaborate to define practical, high-impact steps that can immediately reduce the carbon footprint of the advertising industry.
12:00 PM – 1:00 PM ET
Lunch
Assortment of sandwiches, pasta, salad, fruit & dessert
1:00 PM – 1:25 PM ET
Fireside Chat
From Screen to Green: Ed Begley Jr.’s Environmental Journey
Frank Maguire (Moderator)
SVP, Product Marketing & Sustainability at Sharethrough
Ed Begley Jr.
Environmental Activist and Emmy Award-Nominated Actor
1:25 PM – 1:55 PM ET
Brand Panel
Sustainability Talks: Inside the Brand Transformation
John Osborn (Moderator)
Director at AdNetZero
Jennifer Oliveras
Sr. Director- Global Partnerships and Brand Activation at Indeed
James Tarone
Director Programmatic and Video at Pfizer
Katie Usiak
Ads Sustainability Global Product Solutions Lead at Google
Tasha Lenton
Associate Director, Global + EMEA Media at Spotify
1:55 PM – 2:15 PM ET
Fireside Chat
Changing the Narrative: Elevating Black Voices in the Climate Movement
Adam Lake (Moderator)
Head of Communications, North America at Climate Group
Wawa Gatheru
Founder & Executive Director at Black Girl Environmentalist
2:15 PM – 2:30 PM ET
Coffee Break
Meet & Greet Ed Begley Jr.
Coffee & an assortment of Chef-selected desserts
2:30 PM – 2:50 PM ET
Keynote
Advancing Green: Digital Ad Sustainability Objectives in Perspective
Terence Kawaja
CEO & Founder at LUMA Partners
2:50 PM – 3:10 PM ET
Keynote
AI in Media: Planting the Seed for Sustainable Growth
Brian O'Kelley
CEO & Co-Founder at Scope3
3:15 PM – 3:45 PM ET
Agency Panel
Media with a Mission: Agency Updates on Tackling Climate Change & the Use of the Global Sustainability Framework
Catherine Perloff (Moderator)
Reporter at The Information
Stephanie Helen Scheller
Managing Partner Sustainable Solutions EMEA at OMG
Alexander Stone
SVP, Advanced Video & Agency Partnerships at Horizon Media
Oleg Korenfeld
Chief Technology Officer at CMI Media Group
Francis D’Hondt
SVP, Addressable Health at KINESSO
3:45 PM – 4:00 PM ET
Keynote
ESG-Driven Advertising: Proving Impact Beyond the Buzzwords
Guy Jones
Co-founder at The GoodNet
4:00 PM – 4:10 PM ET
Closing Remarks
Frank Maguire
SVP, Product Marketing & Sustainability at Sharethrough
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!
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
Want to be a speaker or wish to learn more about our sponsorship opportunities? Drop us a line and we'll get back to you as soon as possible.
