Statistics: Michael Rubin Invested $975k on Shark Tank

Michael was already trying to make money from businesses when he was a kid. He eventually opened a ski shop while he was still a teenager, and there were much bigger businesses after that. One of them was GSI Commerce, which eBay bought for about $2.4 billion in 2011.

And Michael didn’t hand everything over to eBay. Some of the businesses stayed with him, including the sports-merchandise business that became a big part of Fanatics. So sports and online shopping were already a pretty big part of Michael’s life before Shark Tank.

Michael only appeared twice during Season 15. But he found four companies he wanted to be part of. Glove Wrap and Bot-It came first, and then RoboBurger and K3 Shooting Band gave him two more deals when he returned.

There was another Shark with Michael every time. Counting half of each agreement puts about $975,000 on his side. But $750,000 of that comes from his half of RoboBurger’s $1.5 million loan facility, so most of Michael’s total wasn’t a normal cash-for-equity investment.

Michael Rubin Shark Tank Investment Summary

RoboBurger is what makes Michael’s Shark Tank amount so big. His part comes to $750,000 if the $1.5 million financing is split equally with Kevin O’Leary. But that money was a loan facility at market interest, not $750,000 Michael was putting into RoboBurger as a normal equity investment.

The other three deals only put $225,000 on Michael’s side altogether. Bot-It gives him $150,000 when its $300,000 deal is divided with Mark Cuban. Glove Wrap puts another $25,000 on Michael’s side if we split that deal with Mark. Then K3 Shooting Band adds $50,000 if Michael and Lori were putting in the same amount. Put those together with Bot-It and RoboBurger, and Michael gets about $975,000 from the four deals he made in the Tank.

But we don’t know if Michael and the other Sharks really split the money equally every time. And we don’t know if all of that money ever went into the companies either. Glove Wrap has strong evidence that the deal continued, while Bot-It probably didn’t close and K3 was never publicly confirmed. RoboBurger’s own 2026 documents were still calling the $1.5 million financing a Shark Tank offer.

Michael Rubin Invested About $25,000 in Glove Wrap

Gavin Batarse was only eight when he came into Shark Tank with his father Jon and sister Morgan. He had been trying to break in a new baseball glove with his dad when they came up with Glove Wrap. The product wraps around the glove with a ball sitting inside it so the glove can form around the ball.

The family asked for $50,000 for 20%. Michael already had plenty happening in sports through Fanatics, and he wanted Mark Cuban to come into the deal with him. Gavin and his family eventually accepted $50,000 for 22% from the two Sharks.

If Michael and Mark were putting in the same amount, Michael gets $25,000 of the Glove Wrap deal. And the two Sharks were still connected with the company after Shark Tank. Glove Wrap still talks about its deal with Michael and Mark, and it also shows up in Mark Cuban Companies’ portfolio.

Then Glove Wrap got another connection to baseball. It became the Official Glove Wrap of Major League Baseball. That was quite a bit of growth for the little product Gavin had brought into the Tank when he was eight.

Michael Rubin Invested About $150,000 in Bot-It

Maurice Bachelor and Joel Griffith were trying to make bots useful for regular people. Their Bot-It service could automate things like making reservations and booking appointments online. Michael already knew quite a bit about bots because online businesses like Fanatics had to deal with them too.

Maurice and Joel came into Shark Tank asking for $150,000 for 10%. Michael wanted Bot-It, and Mark Cuban was interested too. The two Sharks started out trying to get the deal separately.

But Michael and Mark eventually decided to do it together. Maurice and Joel accepted $300,000 for 30% from the two Sharks. If Michael and Mark were putting in the same amount, that gives Michael $150,000 of the deal.

Bot-It kept going after Shark Tank, but that doesn’t tell us what happened with Michael’s money. There isn’t strong public evidence showing that the deal with Michael and Mark actually closed, and the company doesn’t appear in Mark Cuban Companies’ portfolio. So Michael’s $150,000 works for his accepted Shark Tank amount, but we can’t say he definitely invested it.

Michael Rubin’s $750,000 RoboBurger Loan Commitment

RoboBurger needed a lot more money than Michael’s first two Shark Tank companies. Andy Siegel, Dan Braido and Audley Wilson came in asking for $1.5 million for 5% of the company. Their machines could cook and serve a burger without having a normal restaurant around them.

Michael wasn’t interested at first. Building all those machines needed a lot of money, and he went out. But then the founders explained that they already had orders and needed the money to build machines for those customers.

That got Michael interested again. Instead of putting $1.5 million into RoboBurger as a normal investment, he offered to finance those orders with a loan at market interest. Kevin O’Leary joined him, and the founders eventually accepted the $1.5 million financing for 9% of the company.

If Michael and Kevin were splitting the RoboBurger deal in half, Michael gets $750,000 and 4.5% of the company. But Michael wasn’t just putting that $750,000 into RoboBurger. It was money the company could borrow when it needed to build machines for orders that were already there.

And we don’t know if RoboBurger ever borrowed all of that money. Even in 2026, the company was still calling the $1.5 million financing a Shark Tank offer. So we can count $750,000 on Michael’s side, but we don’t know how much he actually loaned RoboBurger.

Michael Rubin Invested About $50,000 in K3 Shooting Band

Nicky Young had been working on K3 Shooting Band for years before Shark Tank. She created the band after dealing with a flat basketball shot herself. It goes around the shooting fingers and is supposed to help players get better rotation and form on the ball.

Nicky came into the Tank asking for $100,000 for 20%. Michael wasn’t completely sure about the business, but he liked Nicky. He eventually offered her $100,000 for 50%.

Lori Greiner decided she wanted K3 too, so Michael wasn’t doing the deal alone anymore. Nicky kept working on the numbers with both Sharks, and they eventually agreed to $100,000 for 40%. If Michael and Lori were putting in the same amount, Michael gets $50,000 of the deal.

And K3 didn’t disappear after Shark Tank. Nicky is still selling the shooting bands for adults and kids in 2026. But we don’t know if the deal with Michael and Lori ever actually closed. So we can count $50,000 for Michael, but we don’t know if he really put that money into K3.

How Much Did Michael Rubin Commit on Shark Tank?

Michael had another Shark beside him on all four of his deals. The complete agreements add up to $1.95 million, but Michael wasn’t responsible for all of that money. Giving him half of each deal puts about $975,000 on his side.

The other three deals don’t add nearly as much. Michael gets $25,000 from Glove Wrap, $150,000 from Bot-It and another $50,000 from K3. All three together only put $225,000 on Michael’s side.

RoboBurger is where another $750,000 comes in. But Michael wasn’t putting that money into the company the same way he was with the other three deals. It was his half of a loan RoboBurger could use when it needed to build machines for orders. And all four amounts still depend on Michael and the other Shark putting up the same amount.

There are still questions about what happened after the deals too. Bot-It probably didn’t close, nobody publicly confirmed the K3 deal, and RoboBurger was still calling its financing an offer in 2026. So we can count $975,000 for Michael from the deals he made in the Tank, but we don’t know how much of that money he actually put into the companies.

What Happened to Michael Rubin’s Shark Tank Companies?

Glove Wrap got a pretty big name behind it after Shark Tank. Gavin’s product eventually became the Official Glove Wrap of Major League Baseball. And Michael and Mark were still connected with the business after making their deal.

K3 Shooting Band is still around too. Nicky continues selling the bands for adults and kids. The business kept going even though we still don’t know if Michael and Lori ever actually completed their Shark Tank deal. But we still don’t know if Michael and Lori ever finished their Shark Tank deal.

There is a similar problem with Bot-It. Maurice and Joel kept the business going after Shark Tank, but the stronger evidence points toward their deal with Michael and Mark not closing. So Michael may never have actually put his $150,000 into the company.

RoboBurger was still working on its automated restaurants in 2026 and looking for more money to grow. But the company was still calling Michael and Kevin’s $1.5 million financing a Shark Tank offer. So we still don’t know how much of that money ever actually went into RoboBurger. And none of Michael’s four companies has had a public exit that tells us how much he made from his time in the Tank.

Michael Rubin Built Fanatics Before Shark Tank

Michael got $2.4 billion when eBay bought GSI Commerce in 2011. But eBay didn’t take all of the businesses with it. Michael kept some of them, including the sports-merchandise business that would become a big part of Fanatics.

Fanatics didn’t stop with selling sports merchandise. Trading cards and collectibles became part of the business too. Then Michael moved into sports betting, events and media as well.

Fanatics didn’t stay with just jerseys and other sports merchandise. Trading cards and collectibles became part of the company too. Then there was sports betting, events, prediction markets and media.

By 2026, Fanatics said it had more than 22,000 employees and 80 offices around the world. The company was expecting around $13 billion in revenue for the year. And Michael was still there as the founder and CEO of the business.

Michael Rubin’s Current Status

There is still a lot happening around Fanatics for Michael. The company expects around $13 billion in revenue in 2026, and Michael is still the founder and CEO. Fanatics is private though, so there isn’t a stock-market price telling us exactly what the whole company is worth.

Fanatics is also where a lot of Michael’s money comes from. Forbes estimated the company was worth around $25 billion in 2026. And it put Michael’s own net worth at around $11.7 billion in September 2026. But Fanatics is a private company, so Michael’s $11.7 billion is still an estimate.

Michael used to have part of the Philadelphia 76ers and New Jersey Devils too. But Fanatics was getting into sports betting, and owning the teams at the same time was going to be a problem. Michael eventually sold his part of the teams in 2022. But there were still other things outside Fanatics taking up his time. He helped start REFORM Alliance and is still involved with the organization. And Michael still has Rue Gilt Groupe too.

Final Words

Glove Wrap was only a small product when Gavin brought it into the Tank. But it eventually became the Official Glove Wrap of Major League Baseball. And Michael and Mark were still connected with the company after Shark Tank.

The other three deals are harder to follow after filming. Bot-It probably never got Michael and Mark’s money, while K3 kept selling its bands without a public confirmation that Michael and Lori completed their deal. RoboBurger was still calling the $1.5 million from Michael and Kevin an offer in its own 2026 documents.

And that matters quite a bit with Michael because RoboBurger makes up most of his Shark Tank amount. His attributed part of that financing is $750,000, while Glove Wrap, Bot-It and K3 only give him $225,000 together. The $750,000 was also a loan commitment rather than a regular investment.

Michael gets to $975,000 when we count his part of all four deals. But that doesn’t mean $975,000 actually went from Michael into the companies. Glove Wrap gives us a pretty good sign that Michael and Mark stayed with their deal. We don’t have that same kind of answer for the other three.