Lindsay Mullenger is the founder and CEO of Petite Keep, a company specializing in heirloom-quality, customizable, and hand-assembled keepsake trunks. Inspired to create a beautiful storage solution for her own children's mementos, she launched the brand in 2020 and secured investment from Shark Tank in 2025.
These handcrafted trunks are perfect for commemorating life milestones. Lindsay pitched her brand to returning Sharks Mark Cuban, Barbara Corcoran, Kevin O'Leary, and Lori Greiner, and also to guest Shark Jamie Kern Lima, and came away with a deal for a $400,000 investment in exchange for a 15% stake in her business.
Founded in January 2020, Petite Keep develops trunks to help people store their treasured memories from weddings, births and other major life events in style. Petite Keep's touches, including custom embroidery and luxe hardware, set each heirloom piece apart.
The estimated net worth of Petite Keep is around $3.38 million as of 2025. More products from this episode! Check out other businesses that participated alongside Petite Keep.
A Conversation With Lindsay Mullenger – Founder, Petite Keep
Is Daymond John still rich?
Daymond John — entrepreneur, investor and “Shark Tank” star — turned a $40 budget into FUBU, which is now a $6 billion fashion empire. John's net worth is an estimated $350 million, and he's also a bestselling author and motivational speaker known for his no-nonsense approach to success.
Bombas takes the No. 1 spot among the most successful “Shark Tank” products to date. It has become famous for its super comfortable socks and the brand commits to donating a pair for every one sold. This unique combination of philanthropy and product quality has helped drive sales to an astonishing $1.3 billion.
Made In St. Louis 🤍 From beginning to end, we work to ensure your Petite Keep is of the highest quality. All of our products are hand-assembled in Missouri by our fabulous PK Team who strives to create an easy (and fun!)
How much did Barbara make on Cousins Maine Lobster?
Cousins Maine Lobster went from a single food truck to $585 million in sales, proving what the right partner can do. Back in Shark Tank Season 4, Barbara Corcoran put in $55K for 15% when the company had just $150K in sales from one truck in LA. More than money, she gave them guidance, connections, and direction.
What company turned down $30 million on Shark Tank Update?
On Shark Tank, Mark Cuban offered $30 million for Coffee Meets Bagel after all five other sharks passed. Founders Arum, Dawoon, and Soo Kang turned it down—believing their dating app could rival Match.com, which was then making $800M a year.
Lindsay (born November 29, 1959, Winchester, Massachusetts), is the director of Fellowship Affairs and the Mary and David Boies distinguished senior fellow in U.S. foreign policy at the Council on Foreign Relations (CFR) and a leading authority on U.S. foreign policy.
Mark Cuban left Shark Tank primarily to spend more quality time with his children, who are now teenagers, as the show's filming schedule in June and September conflicted with their school year and family time. He expressed a desire to be present for important moments like the start of the school year and other family activities, realizing he'd missed too much while focusing on the show and his businesses, saying, "I'm tired of missing that".
The judge in question is Barbara Corcoran, who joined the show in 2009 and quickly grabbed the attention of viewers. And with her smile and business smarts, the “Queen of New York Real Estate” can be just as ruthless. Not Kevin O'Leary, but Barbara Corcoran Holds the Title of Meanest Judge on Shark Tank...
The title of the world's youngest billionaire (age 19) has recently been held by Livia Voigt, a Brazilian student and heiress to the WEG electrical equipment company, and in other reports, Johannes von Baumbach, heir to the German pharmaceutical giant Boehringer Ingelheim, though sources vary slightly on who holds the top spot at any given time, both are heirs inheriting fortunes from family businesses. While Livia Voigt's wealth comes from a minority stake in WEG, and von Baumbach's from his family's stake in Boehringer Ingelheim, both inherited their billions rather than earning them self-made.
The academy's analysis suggested business conglomerate founder Gautam Adani from India would be second in line to achieve trillionaire status. That would reportedly happen the year following Musk, in 2028, if his annual growth remains at 123 per cent.
Scroll down for more! Why is Mark Cuban leaving Shark Tank? Cuban is moving on from the show to spend more time with his three children. Simply put, for the Dallas Mavericks owner, “It was time to move on.” He shared the sentiment on X ahead of his final episode.
Bezos appears to be outspending Branson and no wonder: Bezos's $214 billion fortune makes Branson look like a pauper. The Virgin Group founder is worth “just” $7.9 billion, according to the Bloomberg Billionaires Index.
