Petite Keep on Shark Tank

Name: Petite Keep
Availability: InStock

Petite Keep makes personalized storage trunks for keepsakes and memories. The trunks are designed for families to preserve items such as baby clothes, artwork and mementos, and are often given as gifts for new babies.

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Official website checked Nov 1, 2026.

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Price range $175-$330 checked Oct 2026

⏱ Petite Keep in 30 seconds

The ask$400K for 5%Valued at $8M
In the tankDeal: $400K for 15%With Barbara, Mark and Jamie
After the showNot confirmedNo public record either way
TodayStill in businessPersonalized keepsake trunks sold direct online

Petite Keep Shark Tank deal

Asked for: $400,000 for 5%
Asking valuation: $8M
Result: Deal
Final deal: $400,000 for 15%
Deal valuation: $2.67M
Sharks: Barbara Corcoran, Mark Cuban, Jamie Lima
Founders: Lindsay Mullenger
From: -
Aired: Jan 24, 2025

Asked

$8M

Got

$2.67M

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The pitch

Lindsay Mullenger pitched Petite Keep in Shark Tank Season 16, Episode 9 (aired Jan 24, 2025). They asked for $400,000 in exchange for 5% equity, valuing the business at $8M. The entrepreneurs walked away with a deal from Barbara Corcoran, Mark Cuban and Jamie Lima: $400,000 for 15%. That put the final valuation at $2.67M, 67% below what they originally asked for.

Meet the founder

LMLindsay MullengerFounder & CEO of Petite Keep

What happened to Petite Keep after Shark Tank?

Still in business Last checked November 1, 2026

Our checks

Nov 1, 2026: Visited the official website: it is working.

Petite Keep makes personalized heirloom trunks for storing baby and family keepsakes. Former Procter & Gamble employee Lindsay Mullenger launched it in St. Louis in February 2020, and sales grew from $110,000 that year to about $5 million in 2023. On Shark Tank Season 16, Mark Cuban, Barbara Corcoran and guest shark Jamie Kern Lima split a $400,000 investment for 15%. The company has since added smaller trunks and pouches and was named to the 2025 Inc. 5000.

Update: Personalized keepsake trunks sold direct online

Timeline since the show

2020-02
Lindsay Mullenger founded Petite Keep in St. Louis
2023
Sales reached about $5 million
2025-01
Mark Cuban, Barbara Corcoran and Jamie Kern Lima invested $400,000 for 15%
2025
Named to the Inc. 5000 list of fast-growing private companies

Sources (4)

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Frequently asked questions

Did Petite Keep get a deal on Shark Tank?

Yes. Petite Keep got a deal with Barbara Corcoran, Mark Cuban and Jamie Lima for $400,000 and 15% equity.

Which Shark invested in Petite Keep?

Barbara Corcoran, Mark Cuban and Jamie Lima invested in Petite Keep on Season 16 of Shark Tank. Note that some on-air deals change or fall through during due diligence.

Is Petite Keep still in business?

As of our last check (November 2026), Petite Keep appears to still be in business. Its official website is online, and personalized keepsake trunks sold direct online.

What season and episode was Petite Keep on Shark Tank?

Petite Keep appeared in Season 16, Episode 9, which first aired on January 24, 2025.

Where can I buy Petite Keep?

You can buy Petite Keep from its official website and often on Amazon.

What was Petite Keep's valuation on Shark Tank?

The founders valued Petite Keep at $8,000,000 when they entered the Tank, and the final deal valued it at $2,666,667.