Operating Lease, Right-of-Use Asset in USD of Upstream Bio, Inc. from Q4 2023 to Q3 2025

Taxonomy & unit: us-gaap: USD
Description: Amount of lessee's right to use underlying asset under operating lease.
Summary: Upstream Bio, Inc. quarterly Operating Lease, Right-of-Use Asset history and change rate from Q4 2023 to Q3 2025.
Upstream Bio, Inc. Operating Lease, Right-of-Use Asset for the quarter ending September 30, 2025 was $1.37M, a 28.5% decline year-over-year.

Operating Lease, Right-of-Use Asset, Quarterly (USD)

Operating Lease, Right-of-Use Asset, YoY Quarterly Change (%)

Upstream Bio, Inc. Quarterly Operating Lease, Right-of-Use Asset (USD)

Period	Value	YoY Chg	Change %	Date	Report	Filed
Q3 2025	$1.37M	-$546K	-28.5%	Sep 30, 2025	10-Q	2025-11-05
Q2 2025	$1.51M			Jun 30, 2025	10-Q	2025-08-06
Q1 2025	$1.65M			Mar 31, 2025	10-Q	2025-05-06
Q4 2024	$1.78M	+$1.74M	+4047%	Dec 31, 2024	10-Q	2025-11-05
Q3 2024	$1.91M			Sep 30, 2024	10-Q	2024-11-07
Q4 2023	$43K			Dec 31, 2023	10-K	2025-03-12

* An asterisk sign (*) next to the value indicates that the value is likely invalid.