Pierre Casiraghi Net Worth, Relationships, Age/Birthdate & Birthday

A Prince Balancing Legacy, Business and Family

Pierre Casiraghi — full name Pierre Rainier Stefano Casiraghi — was born on September 5, 1987, at the Princess Grace Hospital Centre in La Colle, Monaco. As a member of Monaco’s famed Grimaldi circle, his birthdate and royal lineage positioned him from the very start as part of a storied legacy.

Though rooted in aristocratic heritage — his maternal grandparents were Rainier III, Prince of Monaco and Grace Kelly — Pierre has cultivated a life that bridges tradition, business ambition, and personal passions.

From Family Foundations to Entrepreneurial Stewardship

After completing his studies at Lycée International François-Ier in Fontainebleau and later at Bocconi University in Milan (studying International Economics and Management) — supplemented by law classes at Panthéon-Assas University in Paris — Pierre assumed responsibility for some of his late father’s business interests. 

In June 2009, he became the majority shareholder of the Monaco-based construction firm Engeco S.A., originally founded by his father.  He also holds controlling interests in Monacair, a helicopter charter company operating in and around Monaco. 

Pierre’s business endeavors reflect both a respect for his family’s heritage and a modern ambition to manage and grow that legacy. His quiet leadership behind the scenes complements his public roles — and offers a portrait of a modern royal blending heritage with entrepreneurship.

The Sailor-Philanthropist: A Life at Sea and Service

Beyond boardrooms, Casiraghi has long been drawn to the sea. Yachting and competitive sailing have been part of his life ever since childhood. 

He is on the Management Committee of the Yacht Club de Monaco.  In that capacity, he helped launch the charitable regatta Sail for a Cause, with proceeds supporting humanitarian causes — particularly for children from underprivileged countries in need of medical care or aid. 

His involvement in humanitarian efforts dates back to 2007, when he joined his mother on a tour of African countries — including Niger, Burundi, the Democratic Republic of the Congo and South Africa — under the banner of his mother’s foundation. In combining sport with service, Pierre illustrates a modern vision of royalty: leveraging privilege for purpose.

A Private Love: Pierre and His Partner Turned Spouse

In May 2008, while studying in Milan, Pierre began a relationship with Italian journalist and aristocrat Beatrice Borromeo, a member of one of Italy’s oldest noble families.  After several years together, the pair married — first in a civil ceremony on July 25, 2015, at Monaco’s Prince’s Palace, and then in a religious ceremony on August 1, 2015, on Isolino di San Giovanni, one of the Borromean Islands on Lake Maggiore, Italy.

Their union has since grown into a family with three children. Their eldest son, Stefano Ercole Carlo Casiraghi, was born on February 28, 2017; their second son, Francesco Carlo Albert Casiraghi, arrived on May 21, 2018; and in October 2025 they welcomed their first daughter, Bianca Caroline Marta Casiraghi — born October 4, 2025.

The birth of Bianca — with a name blending Italian heritage and a tribute to Pierre’s mother, Princess Caroline — reaffirmed the family’s roots while hinting at legacy’s next generation.

Estimating the Wealth of a Modern Royal

Estimates of Pierre Casiraghi’s net worth vary depending on source and methodology. According to one profile, his fortune is estimated at around US$30 million. Another source, aggregating his business interests and asset holdings, places the figure closer to US$50 million.

These valuations reflect his majority holdings in Engeco, ownership stakes in Monacair, and other assets tied to real estate and yacht-related ventures — not traditional royal inheritance but a modern portfolio blending legacy companies with entrepreneurial independence.

Between Monaco’s Legacy and a Personal Path Forward

Pierre Casiraghi stands at a crossroads between heritage and personal ambition. As the grandson of iconic figures and a member of Monaco’s ruling lineage, tradition could dictate a purely ceremonial life. Instead, he has shaped his own path — embracing business responsibilities, sailing, philanthropy, and a grounded family life.

His story suggests a quietly powerful statement: that noble birth need not be a limitation, but rather a platform — one from which he channels privilege into responsibility. For readers seeking insight into how modern royals evolve beyond pageantry, Pierre’s journey offers a compelling model.