Brittany Mosley
CEO & Co-Founder
Rosy Finch Method & Co
Los Angeles, CA

Brittany Mosley is a performance-driven marketing leader with over 17 years of expertise in B2B and B2C growth strategy, advertising, and marketing operations. As CEO and Co-Founder of Rosy Finch Method & Co, Brittany specializes in aligning entire GTM & growth functions across marketing, sales, and CX, connecting accountability with tangible business outcomes, and helping organizations achieve full-funnel accountability and sustainable, cost-efficient growth. 

Prior to leading Rosy Finch, Brittany served as Vice President of Growth & GTM at MainStreet, a B2B fintech startup, where she established foundational best practices for growth marketing and operations. Her innovative strategies and data-driven campaigns have earned her multiple awards, including recognition for her work on the groundbreaking IHOP/IHOb campaign, which won her two Cannes Silver Lion Awards, a Bronze Effie, WARC Media Award for Best Use of Data, AdWeek’s Media Plan of the Year, and more. 

Brittany’s career also includes managing media strategy for T-Mobile, the largest U.S. client at Initiative, helped launch TikTok in the U.S. as the first Media Agency of Record and achieved new product growth goals for First Republic Bank, surpassing 66% of the campaign's goals. Known for her ability to cultivate effective relationships with stakeholders, Brittany is passionate about driving organizational growth and delivering measurable results. Under her leadership, Rosy Finch continues to set the standard for marketing innovation and accountability.