Understanding Real Estate has a new chairman. On Tuesday, the brokerage announced the appointment of Lori Muller as president, with Muller taking on her new role starting Monday.
“Lori is a proven, people-oriented leader with deep operational expertise and a strong track record of empowering agent and broker leaders,” Marco Fregenal, CEO of Fathom, said in a statement. “As Fathom continues to scale its agent-centric platform and expand its integrated services model, Lori’s experience leading high-performing organizations and her passion for agent success make her the ideal person to lead Fathom Realty into its next phase of growth.”
Muller succeeds Samantha Guiggio, who is stepping down from her role as president of Fathom Realty and chief operating officer of the brokerage’s parent company. Fathom Holdings. She has been with the company for over 15 years.
In a statement, Guiggio said stepping down from her leadership roles was a “personal decision” and that she is “truly excited about the next phase of her leadership.” [her] travel.”
“Samantha has been instrumental in shaping the culture, growth and operational excellence that define our company today,” said Fregenal. “Under her leadership, Fathom has expanded to 42 states and Washington, DC, supporting more than 15,000 licensed agents with best-in-class systems, training and support.
“She helped launch Fathom Elevate, our concierge solution for agent marketing, transaction support and coaching, which continues to set a new industry standard for agent services. Her passion, integrity and vision have had a lasting impact and she will always be part of the Fathom legacy.”
Muller has more than 20 years of leadership experience in residential real estate. She most recently served as president of the American organization at EXIT Realty Corp. International.
“I am passionate about the opportunity to lead Fathom Realty into its next chapter of growth. Our industry is experiencing significant momentum in mergers and acquisitions, which creates incredible opportunities when combined with the right leadership,” Muller said in a statement.
“I’m excited about what we’re building at Fathom – a community designed to serve agents, fuel their businesses, unlock new opportunities and amplify their success in an ever-changing marketplace.”
In the third quarter of 2025, Fathom reported 38% year-over-year revenue growth to $115.3 million, while agent counts increased 24% and transactions increased 23%.
“This leadership transition reflects the strength and maturity of our company,” Fregenal added. “We are building for the long term, and Lori’s leadership will ensure we continue to deliver exceptional value to our agents while driving sustainable growth for our shareholders.”
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