Tidemark Philanthropy was founded by philanthropic strategist and advocate Erika McMahon, whose two decades in education and advancement revealed a consistent truth: institutions often underestimate the power of women’s voices in shaping the future of giving.

After leading transformational campaigns and seeing firsthand how culture shapes generosity, Erika launched Tidemark to help organizations listen differently—to align mission with meaning, data with empathy, and fundraising with trust. The name Tidemark reflects the natural rhythm of philanthropy itself: the place where impact meets renewal, and where what we build together leaves a lasting mark.