Upstream Bio UPB

Upstream Bio, Inc. · Nasdaq · Pharmaceutical Preparations

$2.98+6.81%close on Oct. 28, 2026 · volume 1.3M · Yahoo Finance

Price, last 47 sessions

$4.00$6.00Sept. 2026Oct. 2026
Aug. 24, 2026 to Oct. 28, 2026 · high $7.18 · low $2.74 · SEC filing, placed when SEC released it

Our coverage

Nothing published yet.

Insider buying and selling

DateInsiderTradeSharesAvg. priceValue
Sept. 16, 2026Michael Gray
CFO and COO
Sold853$5.49$4,683
Sept. 16, 2026Allison Ambrose
General Counsel
Sold485$5.49$2,663
Sept. 16, 2026Aaron Deykin
Chief Medical Officer
Sold895$5.49$4,914
Sept. 16, 2026Everett Rand Sutherland
Chief Executive Officer, director
Sold2,095$5.49$11,502
Sept. 16, 2026Adam Houghton
Chief Business Officer
Sold700$5.49$3,843

Open-market purchases and sales reported on SEC Form 4 filed since July 24, 2026; grants, option exercises and shares withheld for tax aren't shown. A trade under a 10b5-1 plan was scheduled in advance. Where a filing was amended, the amendment's figures are shown.

Recent SEC filings

All 10 →