Diane Plese has spent years mostly out of the spotlight, yet her name keeps showing up in search results next to one of television’s most recognizable investors. She is best known as the former wife of Robert Herjavec, the Shark Tank star and cybersecurity entrepreneur, but there is far more to her story than a single headline suggests. Diane Plese built her own career as an optometrist, raised three children, went through a highly publicized divorce, and then quietly stepped back from public life on her own terms.
This guide answers every common question people ask about Diane Plese, including her age, career, education, family background, relationship status, and net worth. We also clear up a few details that get reported inconsistently elsewhere, so you’re getting the most accurate picture available.
Quick Facts About Diane Plese
| Detail | Information |
|---|---|
| Full Name | Diane Plese |
| Profession | Optometrist (eye doctor) |
| Year of Birth | 1959 |
| Place of Birth | Parkdale, Toronto, Canada |
| Nationality | Canadian |
| Ethnicity | Croatian-Canadian |
| Marital Status | Divorced |
| Ex-Husband | Robert Herjavec |
| Children | Three (Brendan, Skye, and Caprice Herjavec) |
| Height | Reportedly around 5 feet 10 inches |
| Net Worth | Estimated between $25 million and $100 million |
| Known For | Ex-wife of Shark Tank investor Robert Herjavec; career in optometry |
Who Is Diane Plese?
Diane Plese is a Canadian optometrist who spent decades caring for patients’ eyesight long before the public ever learned her name. She became widely known after marrying Robert Herjavec, a Croatian-Canadian entrepreneur who later found fame as an investor on Shark Tank. While most articles online focus only on her marriage, Diane Plese built a full career of her own in eye care, and she has always kept her personal life private, even during the years her divorce was making headlines.
She was born in 1959 in Parkdale, a neighborhood in Toronto, Canada, to parents who had immigrated from Croatia. Growing up in an immigrant household shaped her strong work ethic early on, something that later carried into both her medical career and her role as a mother.
Diane Plese Age
One detail that varies across different articles is Diane Plese’s exact age. Since her birth year is reported as 1959, she would be around 66 to 67 years old as of 2026, depending on her birth month, which has never been made public. Some older articles list her as being in her late fifties or early sixties simply because they were published years earlier. If you see a different number online, it’s likely just outdated rather than incorrect.
Diane Plese Early Life
Diane Plese grew up in Parkdale, Toronto, as the child of Croatian immigrants who came to Canada in search of a better life. Details about her exact schooling and siblings aren’t widely documented, which is common for private individuals who never sought media attention before their marriage. What is known is that she showed an early interest in science and healthcare, which eventually led her toward a career in medicine.
Growing up in a Croatian household in Toronto also gave Diane Plese a strong connection to her heritage, something she has carried with her throughout her adult life, even as her career and family life took center stage.
Diane Plese Education
Diane Plese pursued formal training to become a licensed optometrist, a path that requires years of study beyond a standard university degree. Optometry programs typically involve a pre-medical or science-based undergraduate degree, followed by a specialized doctor of optometry program covering eye anatomy, vision correction, and diagnosing eye diseases.
While the exact university she attended hasn’t been publicly confirmed, her career path tells us she completed the rigorous coursework and clinical training required to practice as an eye doctor in Canada. This detail is worth highlighting because most coverage of Diane Plese skips over her education entirely and jumps straight to her marriage, even though her medical training is a real professional accomplishment on its own.
Diane Plese Career
Long before she became known as Robert Herjavec’s wife, Diane Plese was already working as a practicing optometrist in Toronto. As an eye doctor, her job involved examining patients’ vision, diagnosing eye conditions, and prescribing corrective lenses or treatment plans — a career that requires patience, precision, and years of hands-on clinical experience.
In fact, it was through her work that Diane Plese met Robert Herjavec in the late 1980s, when he visited her practice for an eye exam. That single appointment turned into a relationship, and later a marriage, but Diane continued working in optometry throughout much of their time together. Those familiar with her practice have described her as dedicated and detail-oriented, qualities that served her well with patients over the years.
Even after her divorce and the financial independence that came with it, Diane Plese has remained connected to her profession rather than stepping away from it entirely. This is one of the more overlooked parts of her story, since most articles reduce her identity to her marriage rather than her decades of clinical work.
Marriage to Robert Herjavec
Diane Plese and Robert Herjavec met in 1988 when he came in for an eye checkup at the clinic where she worked. The two dated for about two years before marrying in 1990 in a Croatian church in Mississauga, Ontario — a detail that reflects both of their shared Croatian backgrounds.
Their marriage lasted close to 24 years. During that time, Diane supported Robert as he built BRAK Systems, an internet security company he started from their basement in the early days. That company would later be sold for tens of millions of dollars, laying the foundation for the wealth Robert would go on to build through Herjavec Group and his television career.
The couple welcomed three children together during their marriage, and by most accounts, Diane focused heavily on family life while continuing her own career on the side.
The Divorce and Settlement
Diane Plese and Robert Herjavec separated after nearly a quarter century of marriage, with the divorce becoming finalized in the mid-2010s. Because Robert Herjavec’s business success and television fame made the split newsworthy, details about the settlement became public in a way most divorces never do.
Reports indicate Diane Plese received a settlement in the tens of millions of dollars, with some sources citing a figure around $25 million, while others suggest the total value of assets divided was significantly higher. The exact number has never been officially confirmed by either party, so treat any specific figure you see online as an estimate rather than a verified fact.
What is clear is that the settlement gave Diane Plese long-term financial security, allowing her to maintain her lifestyle and continue focusing on her career and children without financial pressure.
Diane Plese Net Worth
Diane Plese’s net worth is commonly estimated somewhere between $25 million and $100 million. The wide range exists because different outlets calculate it differently. Some focus only on her reported divorce settlement, while others factor in decades of income from her optometry practice, real estate, and other investments.
Her wealth comes from two main sources: a professional income built over a long career as a licensed optometrist, and a larger financial settlement from her divorce, which reportedly included a lump sum along with ongoing support. Combined, these have allowed Diane Plese to live comfortably while staying largely out of the public eye.
Unlike celebrities who earn through endorsements or media appearances, Diane Plese’s financial profile is built on a stable medical career and a legal settlement rather than ongoing public income — part of why exact figures are harder to verify than they are for her more famous ex-husband.
Height, Appearance, and Physical Details
Diane Plese is reported to stand around 5 feet 10 inches tall, though a few sources list a shorter height, so this figure should be treated as an estimate rather than a confirmed fact. She has been described as having blonde hair and brown eyes, with a slim build. Since Diane Plese avoids public appearances and interviews, most physical details about her come from secondhand sources rather than verified interviews or official records, so it’s fair to treat these numbers with some caution.
Family Background and Siblings
Diane Plese was raised by Croatian immigrant parents who settled in Parkdale, Toronto, before her birth. Like many first-generation Canadian families, her household placed a strong emphasis on education and hard work — values that appear to have shaped her decision to pursue a demanding medical career.
Public information about her siblings is limited, which is typical for someone who was a private citizen for most of her life before her marriage brought public attention. What is well documented is the family she built with Robert Herjavec, which includes three children.
Diane Plese’s Children
Diane Plese and Robert Herjavec are parents to three children: a son named Brendan, and two daughters named Skye and Caprice.
Brendan Herjavec is the eldest of the three and has shown an interest in the business world, following somewhat in his father’s entrepreneurial footsteps.
Skye Herjavec has been involved in various creative and professional pursuits as she has grown into adulthood.
Caprice Herjavec, the youngest, has also built her own path while staying connected to her family.
Diane Plese has largely kept her children’s lives private, choosing not to use them for public attention despite the media interest surrounding their father — a protective approach consistent with how she has handled her own public image since the divorce.
Is Diane Plese Married Now? Boyfriend and Relationship Status
There is no public information confirming that Diane Plese has remarried or is currently in a relationship since her divorce from Robert Herjavec. She has chosen to keep her dating life, if any, completely private. No credible reports, interviews, or public appearances have linked her to a new partner.
This is fairly consistent with how Diane Plese has handled her entire post-divorce life. Rather than using the public attention from her split to build a media presence, she stepped back entirely, focusing on her career, her children, and her personal well-being instead.
A Brief Look at Robert Herjavec
Robert Herjavec is a Croatian-Canadian entrepreneur best known for his role as an investor on Shark Tank. Before his television career, he built and sold BRAK Systems, an internet security company, for tens of millions of dollars. He later founded Herjavec Group, a cybersecurity firm that has grown into a major player in the industry.
Robert and Diane Plese were married for nearly 24 years before their divorce. He has since remarried professional dancer Kym Johnson, with whom he has twin children. Understanding Robert’s background helps explain why Diane Plese’s divorce received so much media coverage, even though she herself never sought that kind of attention.
Diane Plese’s Life Today
Since her divorce, Diane Plese has continued living a quiet, private life in the Toronto area. She has stayed connected to her career in optometry and remains focused on her family, particularly her three adult children. Unlike her ex-husband, she has avoided television, interviews, and social media entirely, which is likely why so little verified information exists about her current daily life.
Those who follow her story often describe her post-divorce years as a quiet return to normalcy after two decades in the public eye by association. She appears to prioritize privacy, family, and professional stability over public recognition — a choice that stands out given how much attention her ex-husband continues to receive.
Hobbies and Personal Interests
Diane Plese hasn’t shared details about her personal interests publicly. People in similar circumstances — private professionals who value family time — often gravitate toward hobbies like travel, reading, gardening, and wellness practices such as yoga. Since Diane hasn’t confirmed any specific hobbies through interviews, these should be considered reasonable possibilities rather than confirmed facts, something a lot of other articles fail to clarify.
Social Media Presence
Diane Plese does not maintain any known public social media accounts. She is not active on Instagram, Twitter, or Facebook under any confirmed public profile, which fits with her broader pattern of avoiding media attention. This is fairly unusual for someone connected to a well-known television personality, but it reflects her consistent choice to keep her life away from public scrutiny.
Why Diane Plese’s Story Matters Beyond the Headlines
Most coverage of Diane Plese treats her as a footnote in Robert Herjavec’s story, focusing almost entirely on the divorce settlement. But her decades-long career as an optometrist, her role raising three children largely out of the spotlight, and her decision to maintain privacy even after a high-profile split all say something about who she is beyond that one relationship. She built a professional identity before her marriage made headlines, and she has maintained that identity long after the media attention faded.
Frequently Asked Questions
What is Diane Plese’s profession?
Diane Plese is a licensed optometrist who has spent decades working as an eye doctor in Toronto, Canada.
How old is Diane Plese?
Diane Plese was born in 1959, making her around 66 to 67 years old as of 2026.
What is Diane Plese’s net worth?
Her net worth is estimated between $25 million and $100 million, coming from her optometry career and her divorce settlement.
How did Diane Plese meet Robert Herjavec?
She met him in 1988 when he came to her eye clinic for a checkup. They married two years later, in 1990.
Where does Diane Plese live?
She is reported to live a private life in the Toronto, Canada area.
Final Thoughts
Diane Plese’s story is more than a supporting detail in a celebrity divorce. She is a trained medical professional, a mother of three, and someone who has chosen privacy over publicity at every turn, even when public interest in her life was at its highest. While exact figures like her age, height, and net worth vary slightly across sources due to limited public confirmation, the core of her story remains consistent: a private, hardworking woman who built her own career and continues to live life on her own terms.