AI Upstream LLC (CIK 0002039907)

Latest company ownership

UPB - Upstream Bio, Inc.

Role: 10% Owner

Shares held

1,172,410

Last filed at

Oct 17, 2024

Confidence Score

50.1

2025Q4

Confidence Score History

2024Q4 2025Q4

Recent buy/sell transactions

Exec date	Filing date	Company	Role	Signal	Confidence	Shares	% of shares	Under plan?	Amount (USD)
Oct 15, 2024	Oct 17, 2024	Upstream Bio, Inc.	10% Owner	Buy	100.0	+1,175,000	100.00%	✗	$20M