Ken Siebel Family, Kids’ Success, & More

Ken Siebel is the celebrity dad of Jennifer Siebel Newsom, a documentary filmmaker and the first lady of California. Read this article further to learn more about Ken Siebel and his life.

Personal Life

Ken Siebel’s full name is Kenneth F. Siebel. He was born and raised in the United States. His nationality is American, and he is of white ethnicity. He married Judy Fritzer and has four daughters. They met during their college days and later married after several months of dating. His wife, Judy Fritzer, was the co-founder of the Bay Area Discovery Museum in Sausalito, United States.


Ken finished his early education at a local high school in his hometown. Later, he joined the University of Wisconsin and completed his B.B.A. and M.B.A. in Finance.


Ken started his career as an investment manager at Smith, Barney & Co. and worked there until 1969. In the same year, he co-founded the firm of Robertson, Colman & Siebel.

However, he gave up his partnership in 1977 and devoted himself to investment management. He founded and worked as a chairman for the investment advisory firm of Wood Island Associates.

The U.S. Trust Company acquired the firm in 1998. Since then, Ken served as a member of the Board of Trustees and Investment Committee for the San Francisco Museum of Modern Art.

Net Worth

Ken has a net worth of $10 million. His daughter, Jennifer Siebel Newsom, has a net worth of $22 million. This includes their income sources, brand value, inheritance, and land assets.

Why Is He Popular?

Ken Siebel became popular due to his daughter, Jennifer Siebel Newsom, She is a documentary filmmaker and the first lady of California. However, Ken also gained popularity for founding several firms and leading a successful career as an investment manager and chairman.

Family Life

Ken and his wife, Judy, have four daughters together. However, their daughter Stacey passed away due to an accidental crush by a golf cart. This traumatized the family, especially Ken’s daughter Jennifer, who was present at the moment of the incident.

A few years later, the family recovered from the death of Stacy, when Jennifer gained a name as a documentary filmmaker. Ken’s daughter, Jennifer, became the first lady of California, as the wife of Governor Gavin Newsom, on January 7, 2019.

Social Media Presence

Ken has no profile on social media, however, his daughter, Jennifer Siebel Newsom, has an account on the social media platform Instagram. She has over 68.7K followers and a decent fanbase. She also has an account on X, with 67.3K Followers.

Low Profile Life

Despite the success and fame of his children, Ken Siebel prefers living a life away from the limelight. He maintains a luxurious yet private life with his wife, Judy Siebel. However, Ken occasionally appears in the social posts of his daughters. He also appears in media outlets, supporting his daughter and politician son-in-law.


Ken Siebel is an American celebrity father of the first lady of California, Jennifer Siebel Newsom. Ken led a successful career as an investment manager for many years.

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