Billionaire Profile
John Mars
Global Rank
#43

Image: Public domain | via Wikimedia Commons

John Mars

CEO, Mars, Incorporated
US
Real-Time Net Worth
$41.6B
As of December 2025
Age
90
Source
Candy, pet food
Industry
food-beverage
Citizenship
US

Biography

John Mars, born in 1935, is an American businessman and heir to the Mars, Incorporated fortune. As Chairman of Mars, Inc., he has overseen the growth of a global confectionery, pet care, and food empire, with a net worth of $41.6 billion. Mars's wealth is primarily derived from his family's ownership of Mars, Inc., the manufacturer of popular brands like M&M's, Snickers, and Pedigree. His career has been marked by strategic acquisitions and a commitment to maintaining the company's private ownership. He attended Hotchkiss School and Yale University and resides in Jackson, Wyoming. His achievements include acquiring VCA, Inc. and leading Mars, Inc. to become a global leader in the food-beverage industry.

Wealth Over Time

In-Depth Profile

Early Life

John Franklyn Mars was born on October 15, 1935, to Forrest Mars, Sr. and Audrey Ruth (Meyer). He is the grandson of Frank C. Mars, who founded Mars, Incorporated. John attended The Hotchkiss School and later graduated from Yale University.

Rise to Success

John Mars joined the family business after serving in the U.S. Army. He was instrumental in expanding Mars, Incorporated's global presence. Over the years, he has played a key role in the company's expansion, including acquiring VCA, Inc., a pet care company, for $7.7 billion in January 2017. His leadership has contributed to the company's position as a global leader in the confectionery, pet care, and food industries.

Key Business Strategies

Mars, Incorporated operates under a privately held structure, allowing for long-term strategic decisions without the pressures of public markets. John Mars, along with his sister Jacqueline, each own an estimated one-third of the company, with the rest believed to be owned by the descendants of their late brother, Forrest Mars Jr. The company has focused on innovation, brand building, and strategic acquisitions, such as the acquisition of the Wm. Wrigley Jr. Company for $23 billion in 2008 and Kellanova for $35.9 billion.

Philanthropy

John Mars is known for his philanthropic efforts and has supported various charitable organizations. He is also a passionate art collector and has donated significant works of art to museums.

Career Milestones

1959

Joined Mars, Incorporated

Began working in the family business after serving in the U.S. Army.

2010

Net Worth Milestone

Listed as the 30th richest person in the world with a net worth of $20.1 billion.

2015

Honorary Knighthood

Awarded an honorary knighthood by Queen Elizabeth II.

2017

Acquisition of VCA, Inc.

Mars, Inc. acquired VCA, Inc. for $7.7 billion.

Philanthropy & Social Impact

Philanthropy

Various Charitable Organizations

Unknown

Supports various charitable organizations.

Arts

Art Donations

Unknown

Donated significant works of art to museums.

Business Philosophy & Leadership

Notable Quotes

"Known for maintaining a low profile and keeping the family-owned business private."

Leadership Principles

Commitment to Long-Term Growth

Focus on long-term growth rather than short-term shareholder demands.

Strategic Acquisitions

Use acquisitions to expand the company's portfolio and market presence.

Principles-Based Business

Operate based on principles of quality, responsibility, mutuality, efficiency, and freedom.