At Tributary Real Estate, we leverage our trusted relationships, depth of experience and robust real estate knowledge to provide a customized approach to commercial real estate brokerage and investment services in Denver. We believe that the best results come from building lasting, mutually beneficial relationships, and we work hard every day to cultivate those relationships with our clients and within the Denver community.


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 16 years of experience in commercial real estate as a licensed broker. Amy drives the company’s continued growth through an integrated approach to brokerage and investment 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 BehmSenior Broker
With more than 10 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 senior broker, Jona brings her talent for fostering relationships to assist clients in developing and executing real estate transaction strategies that ultimately position them for success.
Passionate about delivering informed and smart real estate solutions, Jona also provides essential analytical support to the brokerage team. By conducting extensive market research, she ensures Tributary’s brokerage team has access to the latest market insight and opportunities.
Natalie Froland
Natalie FrolandSenior Broker
Natalie Froland has 5 years in the industry and brings extensive business analytics and transaction management experience to the Tributary Real Estate team. In her role as a senior broker, Natalie primarily focuses on tenant and buyer representation, working to ensure clients are represented and supported through the entire transaction. She works closely with clients, taking an integrated approach by leveraging technology and analytics to meet their needs with maximum speed and effectiveness.
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 PeironaAnalyst
As an analyst for Tributary Real Estate, Ryan Peirona leverages his aptitude for financial analysis and problem solving to support the brokerage team by researching, monitoring and evaluating market conditions and trends pertinent to making sound investment decisions. Ryan actively analyzes lease and purchase financials, sublease recovery statistics and proposal comparisons to ultimately help facilitate deal closures. Ryan also supports Tributary’s client engagement efforts by leading client tours, producing client-facing materials and developing client satisfaction surveys.