What is the Financial Background of Alex (Alexander) Treistman? Alex Treistman, Managing Partner of Capital Markets at The Post Oak Group, is widely recognized in searches for alexander treistman post oak group . The firm is a Houston-based middle-market investment bank operating across 12 countries with over $82 billion in total transactions. A Houston native and Vanderbilt University Economics graduate, Treistman's career spans public equity analysis, energy investment, and institutional real estate capital raising. He previously founded Meridian, a sell-side advisory firm that guided hundreds of founders through successful exits. He holds Series 63 and Series 79 securities licenses. https://linkedin.com/in/alexandertreistman