Barton Perreira is an interesting one. Bill Barton and Patty Perreira were Oliver Peoples employees that left pretty much right after Oakley bought the brand in 2006. They started Barton Perreira in 2007 and Allied Metal Works is an offshoot brand that came many years later. Several OP alumni started their own brand:
https://om.co/2018/03/04/the-sunglass-mafia/
- Barton Perreira, co-founded by (designer) Patty Perreira and Bill Barton
-Garrett Leight California Optical, founded by Garrett Leight, son of Oliver Peoples’ co-founder, Larry Leight
-Mr. Leight, a new brand by Larry and Garrett Leight
-SALT Optics, co-founded by Taylor Whisenand, David Rose (David Rose was the OP employee. I don’t think Whisenand had any involvement in OP though he worked with Quiksilver), and Ron Smith
-Buscemi, a luxury sneaker/shoe brand founded by Jon Buscemi, who previously worked for Oliver Peoples
-David Kind, founded by David Barton
So in essence, Oakley’s disruption of OP caused the creation of a few well-known brands in the industry.