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William “Billy” Evans, the partner of former Theranos CEO Elizabeth Holmes, has consistently demonstrated his unwavering support during her challenging legal battles and incarceration. An heir to the prestigious Evans Hotels chain in San Diego, William first crossed paths with Elizabeth in 2017, a period marked by the dramatic unraveling of Theranos. The couple reportedly exchanged vows in a private ceremony in 2019 and are proud parents to two children: a son born in 2021 and a daughter who arrived in early 2023.

Elizabeth founded the groundbreaking healthcare company Theranos in 2003, which gained significant attention due to its revolutionary blood testing technology that claimed to require only a minimal blood sample. This Silicon Valley-based startup garnered substantial investments over the years and announced a high-profile partnership with Walgreens in 2013. However, in 2015, The Wall Street Journal began publishing a series of investigative reports that exposed critical inaccuracies in the company’s blood tests. Following these revelations, Theranos faced a multitude of legal challenges stemming from the misleading tests and was subsequently barred from engaging in certain medical practices.

As Theranos grappled with its mounting issues, the U.S. Securities and Exchange Commission (SEC) took action by charging Elizabeth and the company’s former president, Ramesh Balwani, who is also her ex-husband, with fraud for allegedly misappropriating $700 million from investors through deceptive marketing in 2018. In an official press release, it was revealed that Theranos agreed to a settlement of half a million dollars regarding the fraud charges. Between 2016 and 2018, a significant number of Theranos employees faced layoffs as the company announced its closure. Elizabeth’s trial for wire fraud and conspiracy charges commenced on September 8, 2021, as reported by ABC News, leading to her conviction on four out of eleven fraud counts related to claims made to investors and patients, including three counts of wire fraud and one count of conspiracy to commit wire fraud.

In spite of Elizabeth’s 11-year prison sentence for fraud, William has embarked on an innovative venture within the biotechnology sector. He launched Haemanthus, a startup dedicated to developing diagnostic technologies that utilize small biological samples, a concept that echoes the original mission of Theranos. Reports indicate that Holmes is informally advising Evans on this new project from prison, which raises eyebrows given her controversial past.

Discover more about William and his relationship with Elizabeth below.

Exploring the Relationship Between Elizabeth Holmes and William “Billy” Evans

William’s grandparents were the visionary founders of the San Diego-based Evans Hotel Group. Anne and William D. Evans established the hospitality company in 1953. After William D. passed away in 1984, the couple’s two oldest children, Grace Evans Cherahore and William L. Evans, assumed leadership roles within the company, as detailed on the organization’s official website. Interestingly, Billy does not hold a position within the hotel group. His only public social media presence is on LinkedIn, where he highlights his graduation from the Massachusetts Institute of Technology (MIT) in 2015. His most recent employment listed was as the Manager of Special Projects for Luminar Technology, a role he held from February 2017 until January 2019. Elizabeth and William began their romantic relationship in 2017 and exchanged vows in a secret wedding in 2019. They welcomed their first child, William Holmes Evans, in July 2021, and their second child was born in late 2022 or early 2023, although details regarding the baby’s gender and birth date remain undisclosed.

While both of their social media accounts are set to private, Vanity Fair journalist Nick Bilton tweeted screenshots sourced from Billy’s private social media, including one heartfelt birthday message he penned for Elizabeth. He expressed, “Happy birthday to my best friend. The last year has been the best I’ve ever had,” showcasing the depth of their bond.

The Meeting That Changed Everything: How Elizabeth and Billy First Connected

Billy and the founder of Theranos met at a social gathering in the Bay Area in 2017, as reported by The New York Post. Their engagement occurred in 2019, followed by the rapid distribution of wedding invitations. Billy showcased his affection for the former CEO by gifting her a signet ring from MIT, as confirmed by a colleague, who noted, “Billy and the MIT ring are inseparable, he often wore it on his pinky finger.” The colleague further commented on the practicality of the engagement ring choice, stating, “He could easily acquire a lavish triple-A diamond ring, but given Elizabeth’s circumstances, such extravagance might attract unwanted scrutiny from authorities.”

Despite their apparent affection for one another, there have been concerns voiced by the Evans family. A source relayed that “His family is like, ‘What the f**k are you doing?’ It’s almost as if he’s been brainwashed. [He says,] ‘The media has it all wrong about her,’” as reported by The Post in 2019. Additionally, it has been suggested that Billy’s father attended Elizabeth’s trial in disguise, using the alias “Hanson,” according to NPR.

William Evans: Career Path and Professional Background

While the specifics of William’s current professional status remain uncertain, he boasts an impressive resume as detailed on his LinkedIn profile. During his time at MIT, he completed internships with Qualcomm Ventures and Encore Capital Group. He also held seasonal roles as a summer analyst for Altman Vilandrie & Company and as a summer associate at The Boston Consulting Group. Additionally, he served as a Student Brand Ambassador for Red Bull throughout his academic years. After graduation, he was a Strategy and Analytics Leadership Program Analyst for LinkedIn from July 2015 until February 2017. He transitioned from LinkedIn to become the Manager of Special Projects at Luminar Technologies, a position he left in January 2019. Speculation arose that he departed due to potential negative publicity stemming from his relationship with Elizabeth, as reported by The Post.

The Growing Family of Elizabeth and William: Children and Parenthood

Elizabeth and William are proud parents to two children, including their son, William Holmes Evans, who was born in July 2021. Elizabeth’s first pregnancy led to delays in her trial proceedings, as noted by ABC News. This delay was further impacted by the COVID-19 pandemic, which prompted the judge to permit a designated quiet room within the courthouse, allowing Elizabeth to spend time with her child during trial breaks.

In a revealing 2025 interview with People, Elizabeth shared her ongoing commitment to motherhood, stating, “I still collect milk for my child, as it’s a way to express my love for her while I’m here.” Additionally, she expressed her emotional turmoil, saying, “It pains me deeply to subject my family to this kind of suffering.” She concluded, “However, reflecting on my life and the blessings that have come my way gives me the strength to endure anything. It inspires me to fight for everything.”

Looking Ahead: Elizabeth’s Journey Post-Incarceration

Elizabeth faced a potential maximum sentence of 20 years for her wire fraud charges but ultimately received an 11-year sentence. She attempted to appeal the ruling; however, her appeal was denied, and she began her prison term on May 30, 2023.

In 2019, he was reportedly contemplating launching his own company and had traveled to South Africa for potential opportunities. Now, he is tasked with raising their two children independently while Elizabeth serves her sentence.

Elizabeth opened up about her incarceration in an interview with People published on February 12, 2025, where she stated, “The people I love the most have to walk away as I stand here, a prisoner, and my reality sinks in.”