There are good commercial real estate brokerages everywhere. What sets Tributary Real Estate apart is our expertise in the extra mile. As business owners ourselves, we understand the outsized impact of real estate decisions on everything from finances and future-planning to culture. So, we dig deeper, push harder, and work to protect our clients’ best interests far beyond the transaction.

Our independence allows us to be the best possible advocates for our clients. We handpick team members who embody excellence, integrity, and a genuine passion for creating positive impacts for our clients and community.

At Tributary, we deliver meaningful results, and we do it the right way.


Our core values guide everything we do.

Show Up

We are fully present and fully invested. We show up for each other, for our clients and for our community.

Advocacy Always

We are strategic advisors who remain focused on our client’s long-term success. We cultivate enduring relationships through our tireless advocacy and expertise.

Do the Right Thing

We go the extra mile in every interaction. Being successful doesn’t mean anything if it isn’t done with integrity.

Team Above Self

By working together toward a common vision and leaning into our individual strengths, we win together. Every hiring decision is made as a team to maintain our strong culture.

Give Back

We share our success by paying it forward and representing the Tributary values in our communities.


Andy Cullen
Andy CullenPartner / Managing Broker
As partner and managing broker of Tributary Real Estate, Andy Cullen offers nearly two decades of experience in commercial real estate. Andy leads Tributary’s integrated brokerage and investment strategy, supporting the success of the team in delivering positive results for clients through a personalized service model.
Amy Aldridge
Amy AldridgePartner
As a partner at Tributary Real Estate, Amy Aldridge offers 17 years of experience in commercial real estate as a licensed broker. Amy drives the company’s continued growth through an integrated approach to brokerage services. Amy’s extensive experience closing complex and challenging transactions has provided her with the expertise to find creative solutions for virtually any client real estate need – a skill she empowers her team to continually develop.
Jona Behm
Jona BehmVice President
With more than 11 years of commercial real estate experience in Denver, Jona Behm brings significant market knowledge and expertise to the Tributary Real Estate team. In her role as vice president, Jona brings her talent for fostering relationships to assist clients in developing and executing real estate transaction strategies that ultimately position them for success.
Natalie Froland
Natalie FrolandVice President
Natalie Froland has 6 years in the industry and brings extensive business analytics and transaction management experience to the Tributary Real Estate team. In her role as vice president, Natalie focuses predominantly on tenant and buyer representation, diligently working to ensure that clients receive comprehensive support throughout the entire transaction process. She collaborates closely with clients, employing an integrated approach that harnesses technology and analytics to effectively meet their requirements.
Max Stanton
Max StantonAssociate Broker
Max Stanton brings extensive management and customer service experience to his role as an associate broker at Tributary Real Estate. An empath and a natural leader, he develops strong, lasting relationships that allow him to serve as a true extension of his clients’ teams and deliver on their business priorities. Max is a cross-functional collaborator and a strategic decision maker.
Ryan Peirona
Ryan PeironaAssociate Broker
As an associate broker at Tributary Real Estate, Ryan Peirona leverages his aptitude for financial analysis and his real-time insight into macroeconomic conditions to identify opportunities and challenges in Denver’s dynamic commercial real estate market. As a former analyst, Ryan’s attention to detail and deep understanding of the industry make him an exceptional value add to clients. Ryan also leads Tributary’s intern program, fostering the next generation of commercial real estate professionals through mentorship, firsthand experience and invaluable insights into the day-to-day of brokerage.