Tidemark | 6,082 followers on LinkedIn. Tidemark is a growth stage firm purpose-built to help companies win and scale. | We are a growth equity firm purpose-built to help companies win and scale. Tidemark is powered by a community of investors, entrepreneurs, and operators who are energized by ideas, a love of competition, and the drive to give back. We give 10% of our profits to our foundation, Tidemark10, to support the communities we serve.