Siren, L.L.C. Upstream Bio Inc Transaction History

Siren, L.L.C.

  • $1.93 Trillion
  • Q2 2025
Number of Shares
788,450
Previous 788,450 -0.0%
Holding current value
$8.66 Billion
Previous $4.83 Billion 79.41%
% of portfolio
0.45%
Previous 0.27%

Shares

2 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q1 2025

May 14, 2025
SELL
N/A
-11,550 Reduced 1.44%
788,450 $4.83 Billion
Q4 2024

Feb 14, 2025
BUY
N/A
800,000 New
800,000 $13.2 Billion
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