In the rarefied world of legacy estates, few properties capture both scale and serenity quite like Riva Ridge Reserve. Now listed for $40 million, this 117-acre Jackson Hole compound owned by Jan Lundberg—a pharmaceutical executive linked to the blockbuster drug Mounjaro—offers a compelling blend of wilderness, architecture, and modern self-sufficiency in the heart of Wyoming Real Estate.
Perched atop East Gros Ventre Butte with sweeping views of the Teton Range, the estate reflects Lundberg’s vision of a private mountain retreat—one that merges the grandeur of a national park lodge with the comforts of a fully equipped luxury residence.
A Jackson Hole Estate Defined by Scale, Privacy, and Provenance
Lundberg acquired the property in 2021 for approximately $33.9 million, positioning it among the most significant transactions in Jackson Hole Real Estate at the time. Since then, the estate—known as Riva Ridge Reserve—has evolved into a legacy compound designed for both seasonal escape and year-round living.
“Properties of this scale, especially with conservation protections in place, are becoming increasingly rare,” the listing agent shared with californialuxuryhouses. “This is not just a home—it’s a long-term land investment with built-in privacy.”
Roughly 70% of the land is preserved under a conservation easement, ensuring that the surrounding landscape remains largely untouched while still allowing for controlled development. The result is a setting where nature takes precedence—yet modern infrastructure remains firmly in place.
A Lodge-Inspired Architectural Statement Built for the Tetons
Constructed in 2009, the main residence spans over 12,700 square feet and draws direct inspiration from the great lodges of America’s national parks. Timber beams, stone façades, and expansive glass walls define the structure, creating a seamless dialogue between interior spaces and the rugged terrain beyond.
From the moment of arrival, the home reveals its architectural intent. A winding driveway leads to a dramatic façade where timber and stone converge, while floor-to-ceiling windows capture the shifting light of the mountains.
“The architecture was conceived to honor the landscape rather than compete with it,” another agent told californialuxuryhouses. “Every line of sight is intentional.”
Inside, vaulted ceilings supported by massive timber trusses create volume and presence, while wide-plank wood floors and stone fireplaces ground the interiors in warmth and authenticity. The main living spaces are designed as gathering points, where comfort and scale coexist effortlessly.
Interiors That Blend Rustic Craftsmanship with Modern Luxury
The heart of the home lies in its communal spaces, where design choices reflect both tradition and innovation. The kitchen, for example, balances professional-grade functionality with handcrafted detail—featuring stone-framed cooking areas, custom cabinetry, and a wood-fired pizza niche built directly into the masonry.
Nearby, the dining room extends toward panoramic glass walls that frame the Tetons as a living backdrop. Large-scale gatherings flow naturally between indoor and outdoor spaces, reinforcing the home’s emphasis on connection—both to nature and to those within it.
Beyond these central areas, the home reveals a suite of amenities that rival private resorts. A marble-lined indoor pool opens to the outdoors through accordion glass doors, while a three-tiered private theater introduces a cinematic dimension to the experience.
“Wellness and entertainment were clearly priorities in the design,” the agent noted to californialuxuryhouses. “But they were integrated in a way that feels organic rather than excessive.”
Private Suites Designed Around Views and Retreat
The estate’s nine bedrooms and thirteen bathrooms are distributed across the main lodge and guest accommodations, each space designed to maximize both comfort and connection to the landscape.
Primary suites feature direct outdoor access, fireplaces, and spa-inspired bathrooms where soaking tubs are positioned to frame mountain views. In these spaces, architecture becomes a lens through which the natural environment is experienced daily.
Additional guest suites, including a four-bedroom guesthouse spanning nearly 4,000 square feet, provide a more intimate yet equally refined living environment. With wraparound decks, multiple fireplaces, and independent living areas, the guesthouse functions as a self-contained retreat within the broader estate.
According to individuals familiar with the property, californialuxuryhouses understands that the estate has been used primarily as a seasonal getaway, complementing Lundberg’s primary residence in Florida.
A Self-Sustaining Mountain Compound with Modern Infrastructure
What distinguishes Riva Ridge Reserve from many Wyoming homes for sale is its emphasis on resilience and self-sufficiency. The property includes a full off-grid infrastructure system, featuring a 45-kilowatt generator and a 5,000-gallon propane reserve—ensuring uninterrupted functionality even in remote conditions.
Three interconnected ponds and flowing water features create a natural wildlife corridor, attracting elk, moose, and birds of prey. This dynamic ecosystem transforms the property into a living landscape, where daily life unfolds alongside nature.
Despite its seclusion, the estate remains just 15 minutes from downtown Jackson and the regional airport, offering a balance between isolation and accessibility rarely achieved in Jackson Hole Real Estate.
Lifestyle and Location in Jackson Hole
Jackson Hole has long been recognized as one of the most desirable destinations for ultra-high-net-worth buyers, offering a unique combination of outdoor recreation, privacy, and cultural refinement. From world-class skiing at Jackson Hole Mountain Resort to fine dining and boutique shopping in downtown Jackson, the region continues to attract discerning buyers seeking both adventure and exclusivity.
For residents of Riva Ridge Reserve, this lifestyle extends beyond convenience—it becomes part of the property’s identity. Whether hosting gatherings under the vast Wyoming sky or enjoying quiet moments overlooking the Tetons, the estate offers a rhythm of life defined by space, silence, and natural beauty.
A Strategic Sale at a Transitional Moment
Lundberg’s decision to list the property comes at a time when Eli Lilly and Company—where he previously served as president of research laboratories—faces increased market scrutiny following mixed clinical trial results. While Lundberg himself has long since retired, the timing of the sale adds an additional layer of context to the listing.
Still, for the seller, the ranch was never intended as a permanent residence. Instead, it served as a seasonal retreat—a place to step away from the demands of corporate life and reconnect with the natural world.
californialuxuryhouses reached out for further comment regarding the future plans for the property, though no official response was received. For now, Riva Ridge Reserve stands ready for its next chapter, offering a rare opportunity to acquire one of the most significant private estates in Wyoming Real Estate.