Cornerstone is not your traditional financial planning office. The firm’s mission is rooted in the goal of fostering long-term relationships with our clients founded on trust. We believe that we do more than manage wealth; we strive to be our clients’ most trusted advisor working through the ordinary and extraordinary challenges they face. We are big enough to handle our clients’ needs but small enough to keep the relationship personalized.
Our Culture
The Cornerstone culture defines our interactions with clients, the Tri-Cities community, and even our internal dynamic. You may not find a suit and tie at Cornerstone, but you will find a culture of excellence and dedication to client service. Our supportive work environment enables the members of our team to work together to provide a personalized experience. We may look casual from the outside, but our practice is supported with passion and conviction.
Our History
In 2003, Matt Riesenweber began his investment career with Waddell & Reed in Kennewick, Washington, and quickly hired his mom, Winette. Over the years, the team continued to grow, and in 2015 they made the decision to leave and form the independent wealth management firm, Cornerstone Wealth Strategies, Inc. In 2018, Cornerstone became a Registered Investment Advisor (RIA), allowing the firm to streamline its business structure and better serve clients. As part of its continued evolution, Cornerstone also partnered with LPL Financial to further support its advisors and clients. As the firm has grown, the team has continued to expand to meet clients’ needs by adding experienced, trusted professionals with whom they have long-valued relationships, and in 2025, Cornerstone added a second office in Pullman, Washington.
Our People
The Cornerstone team is a tight knit group that cares not only about our clients but also about the community as a whole. Within the team you will find multiple Certified Financial Planners (CFP®), a lawyer*, licensed individuals, and proficient support staff. Individually, our team members donate their time, either by serving on boards of local non-profit organizations or volunteering in other capacities. Our team believes that philanthropy strengthens our community and supports important causes.
