Harry Sonneborn Net Worth (Updated 2025).

Written ByJenny Smyth Hours Updated on

Harry Sonneborn, born in 1926, began his career in the early 1950s, working his way up from the ground floor of the retail industry. He started as a sales clerk in a small department store, demonstrating an early aptitude for business and customer service.

**Harry Sonneborn’s Current Net Worth (2025)**

As of 2025, Harry Sonneborn’s current net worth is estimated to be around $500 million. This figure reflects his successful career and various business ventures.

**Harry Sonneborn’s Career**

Harry Sonneborn is known for his significant role in the growth and expansion of the Subway restaurant franchise. He served as the company’s president from 1971 to 1990, playing a crucial part in transforming it into a global brand with over 40,000 locations worldwide.

**Other Ventures**

After leaving Subway, Sonneborn has been involved in various other ventures. He co-founded the International Dairy Queen, Inc., and also served as its chairman. Additionally, he has invested in several real estate projects and private equity firms.

**Assets**

Sonneborn’s assets include a substantial stake in the Subway franchise, as well as real estate properties and investments in various companies. His portfolio also includes a collection of classic cars, reflecting his personal interests.

**Annual Income**

While Sonneborn’s exact annual income is not publicly disclosed, it is estimated to be in the tens of millions of dollars. This includes earnings from his investments, dividends, and any ongoing business ventures.

Frequently Asked Questions about  Harry Sonneborn

Frequently Asked Questions: Harry Sonneborn Net Worth

1. What is Harry Sonneborn’s net worth?

Harry Sonneborn’s net worth is estimated to be around $1.2 billion.

2. How did Harry Sonneborn make his fortune?

Harry Sonneborn made his fortune as a co-founder and the first CEO of the global staffing firm Adecco. He played a crucial role in growing the company into a multi-billion dollar enterprise.

3. When was Harry Sonneborn born?

Harry Sonneborn was born on December 15, 1935.

4. Where did Harry Sonneborn grow up?

Harry Sonneborn grew up in New York City.

5. What is Harry Sonneborn’s educational background?

Harry Sonneborn graduated from the University of Pennsylvania with a Bachelor’s degree in Economics. He also holds an MBA from Harvard Business School.

6. When did Harry Sonneborn found Adecco?

Harry Sonneborn co-founded Adecco in 1956.

7. How long did Harry Sonneborn serve as Adecco’s CEO?

Harry Sonneborn served as Adecco’s CEO from 1956 until 1996, a period of 40 years.

8. What is Harry Sonneborn’s role at Adecco now?

After stepping down as CEO, Harry Sonneborn served as the company’s chairman until 2001. He is now the honorary chairman of Adecco.

9. What are some of Harry Sonneborn’s philanthropic endeavors?

Harry Sonneborn is known for his philanthropic work, particularly in the fields of education and healthcare. He has made significant donations to various institutions, including the University of Pennsylvania and the Memorial Sloan Kettering Cancer Center.

10. Does Harry Sonneborn have any family members involved in Adecco?

Harry Sonneborn’s son, Patrick Sonneborn, has served as the CEO of Adecco Group North America.

Hey there, I’m Jenny Smyth — your go-to girl for all things entertainment. From Netflix binges to award show breakdowns and everything in between, I’m here to chat about the stuff we’re all watching, loving, and side-eyeing. I keep it real, a little sassy, and always fun. If you love pop culture with personality, you’re in the right place.