What happened to Allbirds?

Once valued at $4 billion, the brand known for its comfortable footwear just sold itself for a fraction of that. Here’s what investors can expect.

[Photo: Victor J. Blue/Bloomberg via Getty Images]

AllBirds Inc. was valued at $4 billion less than five years ago. Now, it will be sold for just $39 million. 

The shoe company on Monday announced a........

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