About Sphere 421, Inc

We work closely with each client to build a holistic marketing strategy that ladders up to their unique purpose and mission.

Our clients affect positive change in industry dynamics, initiating growth and connection for their most important influencers, and for the communities they serve. 

Business opportunity grows organically as clients cultivate a community of informed stakeholders with shared values. In turn, that burgeoning community yields insights, efficiencies and opportunity to aid broader marketing efforts in service to a broader mission.

BUILDING YOUR DREAM TEAM

For each client, the leadership team at Sphere 421 draws together a panel of Sphere 421 staff and independent consultants who, together, represent the expertise and executional excellence to best serve a client’s unique needs.

SPHERE 421 LEADERSHIP TEAM

Shelly Dvorak, Founder & President

Following two decades serving many of America's best-loved brands and companies, Shelly built Sphere 421 to help organizations evolve their marketing strategies on a foundation on purpose and connection.

Thanks to rich expertise across integrated marketing, strategic partnerships, cause marketing, public relations, entertainment and licensing, she’s skilled in strategizing across platforms to achieve efficiency, alignment and impact. Before starting Sphere 421, Shelly led successful marketing efforts for countless brand, corporate and cause initiatives, including creation of the division-wide influencer marketing platform still successfully supporting General Mills cereals.

Shelly enjoys helping clients elevate their marketing approach through rich collaboration with purpose-aligned partners. Impact and outcome are often magnified through co-creation with allies, whether working with media, cause organizations, experts, entertainers or content creators.

With leadership experience at both a Fortune 500 corporation and a global public relations agency, Shelly understands client needs and pressures, and she knows how to harness a broad array of tools and expertise to deliver best-in-class results. 

Darin Dvorak, Director of Operations & Events

Darin Dvorak is a skilled negotiator and strategist with more than 20 years of experience overseeing conference and event planning for large and small associations. Before joining Sphere 421, Darin served as Director of Conferences and Exhibits for the Health Care Compliance Association, as well as the Society of Corporate Compliance and Ethics. 

With skills in marketing, contract negotiations, event strategy and communications, Darin is a strong partner and advocate for clients. A natural innovator, Darin enjoys strategizing with partners about boosting conference attendance and developing new partner offerings to engage the right sponsors and exhibitors. He understands the challenges faced by industry vendors and service providers, which helps him collaborate more effectively with them in identifying new options and finding solutions. Darin is adept at managing a myriad of planning and onsite details, and quickly adapting to seamlessly manage unexpected situations.

Darin is a member and volunteer for Associations North, as well as the Professional Convention Management Association (PCMA), and he serves as a Global Accounts Manager for HelmsBriscoe.