Our Global
Leadership Team

Our global executive leadership team is led by DDB Worldwide’s Global CEO, Alex Lubar. They are a bunch of talented and nice, relatively normal people who meet frequently and lead the DDB Worldwide network across all six of our regions inclusive of North America, EMEA, Latina, Australia/New Zealand, India and Asia. As you get to know DDB a little better, we thought you’d enjoy learning a little bit more about each of our leaders, too.

Alex Lubar
Global CEO

Alex is DDB Worldwide’s Global CEO focused on growth, working closely with DDB’s global leadership team on advancing DDB’s global strategic plan. Prior to his elevation to Global CEO, Alex was most recently Global President and Chief Operating Officer, DDB Worldwide. Before that, he was with McCann where he held several regional leadership roles including President of McCann’s North America region, President of McCann Asia Pacific, and CEO of McCann London. Alex has also held leadership roles with agencies including Grey and BBH.

Alex was born and raised in London.

His father is American, his mother is French, his wife is Mexican and has three young children, Lucas, Dylan and Siena. He plays tennis with enthusiasm, periodically runs until injured, and is in constant search of snow in which to wipe out.

Marty O’Halloran

Marty O’Halloran was appointed DDB Worldwide Chief Executive Officer in July 2020 and Chairman in 2023.

With over 30 years of experience at DDB, Marty brings a deep understanding of the network’s rich history, culture, and people to the role of worldwide CEO. Marty spent nearly 20 years with the network before being named Chairman and CEO of DDB Group Australia and New Zealand in 2005. He also serves as Board Director of the Omnicom Media Group Australia and New Zealand Board and was the Chairman of the Interbrand Australia board. Throughout his career, Marty has been a driver of creativity, talent, and culture for DDB and its clients.

Marty has a deep understanding of client needs, which resulted in the Australia and New
Zealand agencies some of the most recognized and awarded agencies in the world. During his
time as Chairman and CEO of DDB Group Australia and New Zealand, the region dominated in
a variety of Agency of the Year and regional Network of the Year awards including AWARD,
Axis, Campaign in addition to international awards including Cannes, One Show, D&AD, Spikes, and Campaign Asia Pacific. Under Marty’s leadership, DDB in Australia and New Zealand has been recognized as the fastest growing international network in the region.

In his role as CEO of DDB Worldwide, Marty ‘s leadership spans over 100 offices across the

A former member of the Australia Rowing team, Marty is married to his wife, Deborah, with
whom he raised three children.

Glen Lomas
Global President and Chief Operating Officer

Glen is currently the Global President and Chief Operating Officer of DDB Worldwide. He also oversees Europe, Middle East and Africa, DDB’s largest region. Glen joined the London office (then BMP DDB) in 1995, cutting his teeth on Tony Blair’s election campaign in 1997 before running the Vodafone and Unilever accounts. He spent 10 years in South Africa as Chairman and CEO, building the DDB network across the African continent before returning to London to manage the network’s international relationships. Glen is recognized for championing creativity within the network and his intuitive leadership.

Roisin Rooney
Global Chief People Officer

As Global Chief People Officer for the DDB Worldwide network, Roisin’s role is to optimize DDB’s people-centered activities to ensure continuous growth for our over 8,000 employees around the world. She’s a firm believer in giving talent the power to propel their careers, have impact, and do some of the best work.

She is a network lifer who has DDB proudly cursing through her veins. Her partnership with DDB Global CEO Alex Lubar, and the wider executive leadership team, ensures we hold ourselves accountable to nurturing and bringing to life an exceptional company culture, embodied through our values, beliefs, and behaviours.

Roisin is passionate about authentic leadership and building inclusive cultures. A people connector whose greatest joy is to support exceptional talent to do amazing things and helping people unleash their full potential to make them proud of who they are and what they do.

Mike Barlow
Global CFO

Mike is the Global CFO of DDB Worldwide. An accomplished finance leader for over 20 years, Mike began his career with Omnicom Corporate in 2002 before transferring to DDB in 2007 as the US Controller. In 2014, Mike became CFO for DDB EMEA and rose to take on his current role as Global CFO in 2020.

A driving force within the DDB network, Mike oversees the strategic financial planning process across all global regions. He is in lock step with DDB WW’s Global CEO Alex Lubar and provides direction to all DDB regional and local agency leaders on financial plans, forecasting and reporting into Omnicom. As a member of DDB WW’s global leadership team, Mike’s sharp financial acumen and guidance provides a solid foundation which fuels DDB WW’s growth.

Mike is an Australian and US citizen. He graduated from the University of Western Australia and has enjoyed living and working in Australia, the UK, US and Canada over the years. He currently lives in Brooklyn with his wife JoAnna, their two children and dog.

Donna Tobin
Global Chief Marketing & Communications Officer

Donna brings her passion for people, creativity and being a positive change agent to her role as Global Chief Marketing & Communications Officer at DDB Worldwide.

In addition to being a member of DDB’s Global Executive Leadership Team, she is on the OmniWomenNY Board, the Forbes Communications Council, and the 4A’s Agency Communications Committee. Dedicated to mentorship, Donna developed and launched a Women’s Leadership Network and mentoring program while at WPP’s Kantar, is an active mentor as part of Omnicom’s OmniWomen mentorship program, and has participated in the 4A’s Vanguard Mentorship program, as well as the MAIP Mentorship program.

Prior to her role at DDB Worldwide, Donna was the EVP, Marketing, Communications, Events & Partnerships at the American Association of Advertising Agencies (4A’s). She has extensive ad agency account management experience and led global brands, marketing, communications, and product development across industries including food and beverage, fashion, toys, licensing, and entertainment at companies such as Ocean Spray, Hasbro, Basic Fun!, and WPP.

Donna was named a 2023 PR Daily Top Woman in Marketing in the Agency Leaders category, a 2023 Women in Content Marketing Awards Marketing Leader of the Year finalist, a 2024 Gerety Awards Grand Jury member, a 2022 The Drum’s PR Awards Jury member, and was selected by Marketing Edge Magazine as a Top Female CMO to watch in 2021. She loves music, has three girls, and commutes into DDB Worldwide’s headquarters in Manhattan by high-speed ferry from the top of the Jersey shore where she lives with her husband John.

Tomas Gonsorcik
Global Chief Strategy Officer

Originally from Slovakia with London and NYC agency experience, Tomas has led strategy on global brands such as The Coca Cola Company, New Balance, The Ford Motor Company, Colgate-Palmolive and McDonald’s. Since joining the network in September 2022, Tomas has focused on codifying DDB’s strategic excellence into a universal language for the network’s global planning community with a focus on emotional advantage, creative impact and effectiveness.

Tomas has also initiated DDB’s partnership with Parley For The Oceans, becoming DDB’s sustainability spokesperson. He is a member of DDB’s Global Sustainability and AI Councils and is leading the ongoing development of proprietary strategic tools with DDB’s Global Strategic Council that are used to impact effective creativity that fuels client growth. Tomas is also the co-chair of the 4A’s Strategy Committee and sits on the WARC Global Effectiveness Council. He previously served as Chief Strategy Officer at VMLY&R.

Dave Kissel
Global Business Lead/McDonald’s

Dave Kissel is an award-winning senior marketing executive with extensive experience delivering effective brand communications plans for Fortune 500 clients, leading cross-functional teams at world-class agencies and media companies.

Dave is currently a Global Business Lead at Doyle Dane Bernbach Worldwide, one of the world’s most creative advertising networks. As a partner to McDonald’s in 45 countries, the world’s largest restaurant company is DDB’s biggest multi-national client. Dave is responsible for the global leadership and coordination of the agency’s McDonald’s relationships, helping each office deliver high-impact strategy, content and experiences to measurably grow the McDonald’s brand and business. Dave is a member of DDB Worldwide’s Executive Leadership Team, as well as a member of Omnicom’s Global Client Leadership Team.

Dave transitioned to the Global role after having been a key architect and builder of We Are Unlimited, the DDB-led “Agency of the Future” designed specifically for McDonald’s U.S. by Omnicom. In addition, Dave is the former CEO of, InStadium, a national Nielsen-measured media network consisting of 450+ pro and college sports teams. Under Dave’s leadership, he helped transform InStadium into a multi-media video and gaming platform for major brands. Prior to InStadium, Dave helped create the award-winning agency Zócalo Group, Omnicom’s first dedicated social media agency, a division of Critical Mass.

Varsha Kaura
Global Business Lead/MARS

As Global Business Lead at DDB, Varsha is responsible for strengthening and evolving Mars Incorporated’s global relationships across multiple geographies and individual agency offices, including adam&eveDDB London, DDB Paris, DDB Chicago, DDB New York, DDB Guangzhou, DDB Mudra (India), and DDB Mexico. Her focus includes delivering future-facing, data-driven strategic & creative solutions to Mars Inc., leveraging new data, insights platforms, technology and capabilities integrated into DDB as part of a broader network strategy.

Varsha brings to DDB over 20 years of experience working in creative agencies and business technology consultancy. Her expertise spans across capabilities and industries including brand management, creative solutions, Data driven precision marketing, generating growth for top name clients.

Prior to joining DDB, Varsha was a member of the core leadership team at predictive intelligence San Francisco-based startup Motista, and led client relationships for financial, brokerage, and healthcare clients. There she worked to combine the company’s proprietary tools and big data with expertise in brand positioning, creativity and client relationships, to grow Motista’s revenue and clients significantly over a three-year period.

Varsha started her career at Leo Burnett, spending over 17 years managing US based and global brands such as Allstate, Kellogg’s, and Brooks. She holds a Masters degree in Mass Communication and Media Studies from The University of Georgia and is a frequent advocate and mentor for women in business. Varsha is also on the Chicago board of America India Foundation (AIF) which is a not -or-profit organization focused on addressing education and health care challenges in India.

Aditya Kanthy
CEO & MD, DDB Mudra Group and CEO, Omnicom Advertising Services

Aditya was born in a military family, where he moved homes every couple of years. The constant travelling, new places and living in villages and towns across the country, helped him develop a deep sense of empathy and an appreciation of culture at a young age.

These early influences translated into advertising as a career choice. He started his journey with the erstwhile Mudra in 2003 as a strategic planner, taking on various responsibilities over the years including that of the Chief Strategy Officer, a role in which he helped shape India’s most successful independent advertising agency into an Omnicom-owned integrated marketing communications group.

He has overseen globally recognised Diversity, Equity & Inclusion initiatives like ‘The Phyllis India Project’ that builds and develops a community of women leaders; and ‘Open Pride’ that focuses on respectful representation in creative work and an inclusive work environment for the LGBTQIA+ community & allies.  DDB Mudra Group was the first agency in India to include same sex & live-in partners in medical insurance, the first to offer professional mental health resources years before the conversation became mainstream; and provides best-in-industry paternity leave to enable equal parenting.

Aditya graduated with honours in Economics at St.Stephen’s College, Delhi and is a gold medalist from MICA, Ahmedabad. His path to DDB’s global leadership team and the transformation of the DDB Mudra Group is a subject of a case study taught at Omnicom’s global leadership development programme. He lives in Mumbai with his wife and enjoys seeing the world afresh through the eyes of his little boy.

Andrew Little
President & Regional CEO, DDB Australia/New Zealand

Andrew Little is the President and Regional CEO of DDB Group Australia and New Zealand, leading DDB, Tribal, TRACK, DDB Remedy and Mango across the region. He is celebrating his 22nd year with the agency.

The advertising company works with some of the region’s biggest brands, including McDonald’s, Volkswagen, Westpac, Sky, Lotto New Zealand, Coles, Kmart, and Dulux. Andrew believes in surrounding himself with the very best people in the industry and dedicating himself to the success of his clients.

A passionate golfer and beach lover, Andrew is married to Vanessa and the father of Maya and Hugo.

Esther Selvanayagam
Chief Financial Officer for Singapore and Asia

Esther Selvanayagam joined DDB Asia as Chief Financial Officer for Singapore and Asia in 2019.

With over 25 years of experience working in regional and global roles within the APAC advertising and media industry, Esther has a deep understanding of managing market pressures and navigating dynamic business environments. Her impressive career and unique vantage point include experience gained at holding company and agency levels, client-side, startups, and listed companies. At DDB, Esther puts her commercial acumen to work managing the day-to-day finance and operations alongside market CEOs. She is also Omnicom APAC commercial lead for Exxon.

Esther joined DDB from Dentsu International (previously DAN & Aegis Media) in China, where she played a key role in shaping the network’s infrastructure following a series of early acquisitions. She went on to become CFO of DAN China, overseeing key commercial projects and the integration of Dentsu and Aegis brands involving 4,000+ people in Asia-Pacific’s largest market. In a previous life before advertising, Esther headed up an international games division for entertainment company Imagination, setting up their international operations and flagship office in Los Angeles.

Sri Lankan-born Esther is an Australian Chartered Accountant. She has two children, aged eight and 10, and takes every opportunity to travel, recharge, and play the piano.

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