Allbirds went public in November 2021 as one of the most admired brands in DTC. Its wool sneakers had a devoted following and its customers came back. Four and a half years later the company sold its brand and intellectual property for about $39 million. The path between those two points is a lesson in what loyalty can and can’t do.

The strength

The registration statement described a base most brands would envy. About 53% of 2020 net sales came from repeat customers. Repeat customers spent more than 25% more in their second year than in their first. About 80% of repeat orders included a different item from the customer’s first purchase Filed. This was a brand with a real second order.

Allbirds priced its IPO at $15 a share on November 2, 2021 Filed. The stock closed its first day at $28.64 Reported.

The numbers after

FiledAllbirds, Inc. full-year results. From 2022 to 2024 revenue fell 36% Derived.

In September 2024 the company did a 1-for-20 reverse stock split to keep its Nasdaq listing Filed. In March 2026 it agreed to sell its intellectual property to American Exchange Group for about $39 million Filed, and the remaining public company later renamed itself and changed business entirely Reported.

What management said

On the company’s March 2023 earnings call, co-founder and then co-chief executive Joey Zwillinger said: “We overemphasized products that extended beyond our core DNA” Reported. He named specific new shoes and seasonal colors, and added that the company’s “overinvestment on newness came at the expense of focus on consumers who are loyal to our brands.”

A loyal base is a floor, not an engine. It holds revenue up while you figure out how to win the next buyer. It doesn’t win them for you.

How to read it

It’s tempting to call this a retention failure. The filings suggest the opposite: the repeat behavior was strong. What the business needed after going public was more new buyers at a cost it could afford, and a reason for people who didn’t already love wool sneakers to try the brand. The product extensions were an attempt at that. By the company’s own account they pulled focus from the loyal buyers, and the falling revenue says they didn’t win enough new ones.

This is double jeopardy from chapter 6 in real life. A brand’s existing customers can’t grow it forever. Growth has to come from penetration, and penetration has to come from something new buyers want, sold at an acquisition cost the first order can support.

The contrast

Warby Parker went public about five weeks earlier, in a direct listing. Its registration statement said it was “profitable on a customer’s first order” Filed. Revenue went from $393.7 million in 2020 to $771.3 million in 2024, and in 2025 the company reported its first full year of GAAP net income, $1.6 million on $871.9 million of revenue Filed. It’s not a flawless comparison: glasses are a prescription need with a built-in replacement cycle, and Warby leaned heavily on physical stores. But the difference in the first sentence of each company’s economics, first-order profit versus repeat-driven value, is the difference that mattered.

Do this

• Split last year’s revenue growth into two parts: more new customers, and more spending by existing ones. If almost all of it came from existing customers, you have an Allbirds problem forming, and the fix is in part two of this book, not part four.