Client Start Year End Year
PGA Tour 2014 Current
Smithfield 2012 Current
Prestone 2019 Current
Sunstar GUM 2018 Current
Hungry Howies 2017 Current
Innovage 2020 Current
Ping 2003 Current
Nickelodeon 2018 Current
Pabst 2019 Current
McDonalds 2019 Current

Assembly is a wholly owned subsidiary of Stagwell Inc. Stagwell is a team that goes beyond the traditional holding company, offering a portfolio of companies and capabilities to help brands win at all stages of growth. We consist of over 1,500+ employees, across 20 countries, and 30 offices, investing over $5BN in media billings on behalf of our clients.

Assembly is strategically aligned across our agencies to integrate the best Communications, Technology, CRM, Loyalty and Omnichannel capabilities into one award-winning media services offering. Add in a proprietary data backbone, media activation machine, and the hiring of world-class creative talent, and we’ve got a truly unique offering: a media agency with all the knowledge to actually grow business and partnership consultancies with all the muscle to actually execute strategy.

And that’s not just some sweet agency talk, it’s genuinely what makes us different.

We say WE HELP BRANDS FIND THE CHANGE THAT FUELS GROWTH because we believe we ought to be doing so much more than “delivering” messages efficiently (and expecting the best results). We should be a partner that changes actual consumer behavior in a way that drives your business.

We take the best of our talent and capabilities to create bespoke solutions to our clients needs. We are a performance agency that makes a difference. We created Assembly with deliberate size, scope and capabilities in mind, that make us inherently nimbler, more adaptable and more responsive to change. We created an agency that rewards clients who change their minds. We think change is good. The pace of digital means that nothing is fixed, and brands that aren’t constantly challenging their thinking risk being left behind. We see the complexity of change in the context of what’s possible, and show brands opportunities, every day.

Our approach is built on fundamental, agile principles: ruthless prioritization of work to ensure we deliver maximum business impact and performance. This not only shapes our approach to managing campaigns, but also guides our working relationships with clients as we understand their business needs and build solutions to deliver against them.

We are transparent partners. Performance can only be realized when there is a true partnership between a brand and their agency. We are passionate about transparency. We not only provide access to your fulfillment team through a variety of collaboration tools and communication methods, those truly integrated, best-of-breed team members work together for the good of your business, providing honest assessment of priorities, clarity of thought, tenacity and practical solutions, not checklists.

We have learned how to scale and remain flexible. Our competitors range from large holding companies to more boutique, channel-specific agencies. Our unique position as a midsized agency is that you get the scale and resources of a large agency with the nimble, fast-paced customer satisfaction culture and attitude of a small agency. This means dedicated teams that immerse themselves on your business and own your results, bespoke service agreements that fit your needs, flexibility in adding and subtracting team members during critical moments in time, and teams that stay with the company and working on your business over multiple years, not months.

We are the specialized partners that clients need. Finding the changes that fuel growth for your mission.

  • Sheila Hollins

    Sheila Hollins

    SVP, Integrated Media

    As SVP of Integrated Media, Sheila is responsible for bringing thought leadership with a deep understanding of integrated strategy and approach, developing and nurturing client relationships, and facilitating high performance teams.​​ ​ Since 1998, Sheila has focused on creating integrated, performance-driven experiences for her client’s customers and has a proven track record of success with clients and collaboration with team members. Her expertise spans both direct-to-consumer and business-to-business clients in industries such as: retail, education, financial, non-profit and healthcare.​​ Her client experience includes NUCAP Automotive, Provmi, Westworks Studio, Ancra Cargo, PLS FInancial Services and College Illinois - 529 College Saving Program. ​ Prior to joining Assembly, Sheila held VP Client Director position at Havas Media working on retail clients and pitching in on a non-profit pro bono account. Sheila has been an outstanding addition to the Assembly team, leveraging her experience, knowledge and skills to push fresh thinking while supporting the needs of clients, her teams and the agency. Sheila received BS in Communications/Public Relations from Southern Illinois University.​​
  • Tim Lippa

    Tim Lippa

    EVP, Strategy

    Tim leads the Strategy team at Assembly partnering with internal teams and clients to deliver a first party first approach to the market. Tim ensures the customer is at the heart of every decision from business strategy and market insights, to data/audience evaluation and media strategy/activation.​ With over 20 years of experience in performance-driven strategic marketing empowering brand, digital, product, and international go-to-market plans. Prior to joining Assembly, Tim spent most of his career on the client-side at companies including; Eastman Kodak, Lenovo, Office Depot, Kaplan University, Biomet and DentalPlans. ​Tim received his Master’s in Business Administration from Duke University’s Fuqua School of Business with a concentration in Strategy. He also holds an MS in Software Development from the Rochester Institute of Technology as well as a BS in Computer Science for the State University of New York at Brockport.​​​
  • Kendra Mazey

    Kendra Mazey

    Chief Client Officer

    Kendra has over 20 years of experience in marketing and advertising. She oversees business leadership teams for key Assembly clients, with an end goal of delivering best-in-class, integrated business solutions. Her teams thrive under her competitive, yet collaborative, management style that embraces a holistic, response-driven approach to driving business results and innovation.
  • Valerie Davis

    Valerie Davis

    President, North America

    Valerie leads our North American business helping shape the vision for the agency with a specific focus on devising strategies and managing the delivery of data-driven brand solutions. She brings 27 years of building integrated marketing experiences for clients.​ Valerie has rebounded to Assembly after spending a few years away working as SVP, Head of Accounts at IPG Mediabrands. She had significant roles across its portfolio of agencies, including Reprise, Initiative and UM. During this time, she worked closely with numerous world-renowned brands, including Lego, KPMG, Accenture, Revlon, Keurig Dr Pepper and Merck. Prior to that, she spent nearly nine years with Assembly playing an essential role in the development of the agency’s consumer-first performance marketing solutions across key clients such as; Nike, Ace Hardware, Prudential, Sony and MoneyGram. ​ Valerie started her career in client services at agencies that were part of Euro RSCG and Young & Rubicam. When the internet became a thing, she got in on the ground level spending eight years building Bloomingdale’s into a top luxury eCommerce department store.​
  • Charlotte Polci

    Charlotte Polci

    SVP, Biddable Media Group Director

    With more than 12 years’ experience in media, Charlotte’s has executed strategic digital programs for over 100 clients. She has in depth knowledge of Search, Social, Programmatic, Display, Affiliates, e-commerce and SEO, as well as a unique ability to bring everything together through an integrated lens. She has worked across many verticals including Retail, Healthcare, CPG, Finance, Telecommunications, and SAAS. Charlotte has an entrepreneurial spirt and remains flexible and innovative, quickly adapting strategy and process to match the ever-changing digital landscape.
  • James Townsend

    James Townsend

    Global CEO

    James joined Assembly from Dentsu Aegis Network, where he served as European CEO for digital agency 360i, leading accounts such as Converse, Lidl and Enterprise, and was also part of the DAN UK leadership team. James has over 20 years agency experience, having worked as Managing Director of creative agency Fallon for 7 years, where he was the global lead on high-profile global brands including Cadbury, Nokia and Skoda.
  • Al  Stadnyk

    Al Stadnyk

    VP Director of Analytics & Data Science

    Al brings more than 10 years of marketing and media analytics experience to his clients. His expertise and knowledge in building models brings analytical rigor to marketing plans and guides the Assembly teams to make smart strategic and tactical decisions. Al previously worked in consulting, managing attribution and econometric modeling projects and has worked with brands across many verticals including health care, tech, finance, and retail brands.
  • Jon Schaaf

    Jon Schaaf

    Chief Investment Officer

    Jon is a media/advertising executive with over 20 years of global experience developing integrated communications strategies for some of the world’s largest brands. He started in digital media in 1998, when banners and dial-up access were the norm, and has since worked across almost every part of the advertising ecosystem (agency, sales and consulting). Prior to joining Assembly as Chief Investment Officer, Jon was Chief Agency officer at Conde Nast, and President of Enterprise Partnerships/ Digital Investment at Omnicom Media Group where he led the charge on developing integrated relationships that fundamentally changed the way agencies and publisher engage. His advertising career has taken him around the world, from New York to San Francisco and all the way to Sydney, Australia. When he isn’t globe-trotting, Jon can be found on the hockey rink, baseball field, golf course or paddle court.
  • Shannon  Pruitt

    Shannon Pruitt

    Chief Content Officer

    Shannon is an innovative growth-oriented marketing executive who combines data-led audience journeys with insight-inspired integrated and omni-channel creative strategies to connect brands with consumers in a rapidly changing economic, cultural, media and consumption environment. Equal parts analytical and creative, Shannon has deep experience in building strategic, impactful and effective consumer storytelling campaigns designed to drive growth, build positive sentiment and create loyalty. Leveraging her unique experience, derived from leading and working on all sides of the consumer engagement business, including brand, publisher, agency, and right's holder, she has been both CEO scaling businesses globally, as well as, as CMO creating systems, narratives, creative, content, marketing and media campaigns, experiences and teams, to effectively fuel marketing ecosystems that connect brands and their product value/benefits with the right audiences and people.
  • Kim Sivillo

    Kim Sivillo

    President, Clients

    Kim brings 20 years of media and marketing expertise to the team, having worked on businesses in dozens of verticals across all types of media, helping her clients through strategic transformations. Kim is responsible for ensuring Assembly delivers a seamless approach to media planning and buying, as well as a simple and strong integration with partner agencies, with whom she shares multiple clients.
  • Brad Simms

    Brad Simms

    Chief Product Officer

    Now the Chief Product Officer, Brad served as the CEO of Assembly from 2019-2021; his appointment was made particularly to increase the strategy, analytics and CRM capabilities of award-winning Assembly. Brad founded GALE Partners in 2014 with a vision to bring together great people with great clients to produce great work. He is passionate about partnering with clients to bring creative concepts, innovative approaches, and new business models to reality. Prior to starting his own agency, Brad spent 20 years at top agencies and consultancies, including 13 years at SapientNitro where he served as SVP and Managing Director for Canada, the American Midwest and West.