FilingIndex
SC 13DThe Stakes

Upstream Bio, Inc. files SC 13D

Filed Oct 22, 2024 · 1y ago · Accession 0001193125-24-241045

Plain English

Activist stake — an investor has acquired more than 5% with intent to influence.

Read the source below for the full document.

Read the original on SEC.gov ↗
Filing details
Ticker
UPB
CIK
2022626
Form type
SC 13D
Filing date
Oct 22, 2024
Report date
Document
d862554dsc13d.htm
Size
176 KB