Sinclair & Co. | 120 followers on LinkedIn. We don’t create brands. We uncover them. | Sinclair & Co. is a full-service, boutique marketing firm that delivers award-winning, results-generating brands and campaigns for a select group of national and global clients. Our unique approach and structure allow us to build long-term, collaborative relationships with companies and organizations, primarily in the health care, pharmaceutical, medical device, workforce development and technology sectors. Karen Sinclair founded what was to become Sinclair & Co. in 1988 in a 175-square-foot office.