Andrew Karos owns 37.15% of Boost Run
29,533,018 shares as of the May 8, 2026 filing, worth $263M at the latest close.
BRUN · $707M market cap · Founder-ledGet an email when Andrew Karos’s stake moves.
Free.
The stake
37.15%
worth $263M at the latest close
Stake rank
#241
by dollar value of the stake
Last sale
None
no sales since 2016
Last buy
None
no purchases since 2016
Andrew Karos owns 37.15% of Boost Run Inc.: 29,533,018 of 79,487,441 shares, worth about $263M at the 2026-10-16 close.
How the stake is held
as of the May 8, 2026 filing
SHARES
OF THE STAKE
CLASS B · stated May 8, 2026 · Form 4 ↗
HELD DIRECTLY
29,533,018
100.0%
THE STAKE
29,533,018
37.15%