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Who is Shark Tank Guest Jamie Siminoff?

Singing legend Frank Sinatra once said, “The best revenge is massive success.” One person who knows this to be true may be Jamie Siminoff. This inventor and entrepreneur believed he had a world-changing idea. However, when he pitched that idea, he was rejected on national television by a panel of the most high-profile investors in America on ABC’s Shark Tank.

Ultimately, he would be redeemed as his company would later be called by some of the sharks “the billion-dollar idea that got away”.

Jamie Siminoff is a quintessential entrepreneur known for his innate knack for innovation and disruption. He has consistently pushed the envelope in terms of tech ingenuity, which is distinctly demonstrated through his brainchild, the groundbreaking video doorbell system, Ring. 

His story is not just about a successful business venture but a testament to his relentless pursuit of innovation. Let’s take a look into the life and career of this distinguished entrepreneur and his return to “Shark Tank” as a guest.

Early Life

Jamie Siminoff was born on October 18, 1976, in Chester, New Jersey. Siminoff’s educational path led him to Babson College. Babson is a renowned institution known for its focus on entrepreneurial education. He graduated in 1999 with a degree in entrepreneurship. It paid off and helped him gear up for what was coming.

Jamie’s entrepreneurial spirit manifested early. He had involvement in several startup ventures before landing on the idea that would take the world by storm. Furthermore, he was part of the founding team of Voice over IP company, Unsubscribe.com. It was a service that aimed to help email users manage spam and unwanted subscriptions efficiently.

The Birth of Ring

Ring video doorbell now owned by Amazon.

Siminoff started Ring in his garage. He transformed the space into a makeshift laboratory for his inventive pursuits. In 2012, he conceived the idea of a video doorbell. He wanted a solution to not being able to hear the doorbell ring from his workspace.

The initial product, named Doorbot, was a doorbell that had a video camera and was Wi-Fi enabled. This allowed homeowners to see and speak with visitors at their doorstep through their smartphones.

In 2013, Siminoff had the opportunity to pitch his invention on the popular television series “Shark Tank” in one of the best episodes the show has ever had. Despite offering an impressive presentation, he was unable to secure the investment he sought. The sharks were unsure about the viability and potential profitability of the product. Unfazed, Siminoff continued to work diligently on improving his invention. He rebranded Doorbot to Ring to better encapsulate the product’s purpose and appeal.

By 2016, the company had raised $200 million from investors including Kleiner Perkins Caufield & Byers, Qualcomm Ventures, Goldman Sachs, DFJ Growth, and Sir Richard Branson.

Amazon’s Acquisition

By 2018, Ring had carved out a significant niche in the home security market. This caught the attention of Amazon. Recognizing the potential and the synergy between Ring’s products and Amazon’s ecosystem, a lucrative acquisition deal was struck. Amazon acquired Ring for an astounding sum of over $1 billion. Siminoff stayed on as CEO until the Spring of 2023 when he announced that he would be leaving Amazon to pursue other opportunities.

At the time, Amazon’s acquisition of Ring was described as the retail giant’s second-largest. However, in actuality, it may have been the company’s 3rd largest behind the acquisition of Zappos in 2009. Amazon’s purchase of Whole Foods for $13.7 billion in 2017 was the largest.


Shark Tank Return and Notable Moment

After his sale of Ring, Siminoff had the unbelievable opportunity to return to the Shark Tank. However, this time it would be as a guest shark sitting next to the sharks that rejected his billion-dollar idea. One of his most notable moments was his investment in an ethical meat company called Moink.

Lucinda Cramsey originally asked for $250,000 for 10% of her business. Lucinda and her husband Adam started the business after moving to a farm to avoid city life. While living the farm life, they started a subscription meat service business called Moink. When Lucinda appeared on Shark Tank, she reported that the company was able to generate $700,000 in sales. The Sharks recognized that her sales were impressive. However, the issue some sharks were having was with her profit margins. The cost of customer acquisition was around $100 while the subscription box sold for $159. Unsurprisingly, this turned off many of the sharks.

As a result, several sharks begin to declare that they are out except for Siminoff. He responded by telling Cramsey that she was dealing with sharks that have forgotten what it feels like to be small. The Ring founder said, “When I first started, my margins were terrible… but as you grow, you figure it out.”

Siminoff told Cramsey that he had invested in a specialized cheese company and had the infrastructure in place to help Moink get to scale.

He made Cramsey an offer of $400,000 for 20% which she accepted. In a Facebook post, Cramsey called Siminoff  “a better investor than I could have ever imagined.” The deal turned out great for the both of them as Moink has seen revenue increase to $74 million.


Leadership and Vision

Siminoff focused on nurturing a culture of innovation and customer-centricity when he was leading Ring. Under his guidance, Ring expanded its product line to include a range of home security solutions that integrated seamlessly with modern smart homes.

His vision went beyond just business. Siminoff saw Ring as a tool to foster safer neighborhoods and communities. He implemented features such as the Neighbors app. This is an app that allows users to share videos and safety information within their communities. This helps neighbors know what is going on in their community which helps create a sense of collective security and vigilance.


Ring is by far the most successful product that was rejected on Shark Tank. Siminoff’s story should inspire every entrepreneur. Rejection is a part of the entrepreneurial journey. However, if you have a winning idea and can push past the rejection, anything can happen.


Featured image photo credit: Web Summit under CC


Also read:

Here are All of the Guests that Have Appeared on Shark Tank

Who Is Shark Tank Guest Blake Mycoskie?

10 Successful Companies That Were Rejected on Shark Tank

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Ralph Paul
Ralph is the Managing Editor at StartUp Mindset. The StartUp Mindset team consists of dedicated individuals and is designed to help new, seasoned, and aspiring entrepreneurs succeed.

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Ralph is the Managing Editor at StartUp Mindset. The StartUp Mindset team consists of dedicated individuals and is designed to help new, seasoned, and aspiring entrepreneurs succeed.

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