Joseph Mastrangelo owns 0.63% of Eos Energy Enterprises
2,308,704 shares as of the September 16, 2026 filing, worth $4.2M at the latest close.
EOSE · $663M market capGet an email when Joseph Mastrangelo’s stake moves.
Free.
The stake
0.63%
worth $4.2M at the latest close
Stake rank
#2,210
by dollar value of the stake
Last sale
33 days ago
Sep 16, 2026
Last buy
229 days ago
Mar 4, 2026 · $157,262
Joseph Mastrangelo owns 0.63% of Eos Energy Enterprises, Inc.: 2,308,704 of 364,167,744 shares, worth about $4.2M at the 2026-10-16 close. The stake has moved from 0.00% in 2020 to 0.63% on 2026-09-16, across 5 sales and 8 purchases that moved it since 2016. The last trade that moved it was a planned sale of $980,000 on 2026-09-16.
How the stake is held
as of the Sep 16, 2026 filing
SHARES
OF THE STAKE
COMMON STOCK · stated Sep 16, 2026 · Form 4 ↗
HELD DIRECTLY
2,308,704
100.0%
THE STAKE
2,308,704
0.63%