Allison Ambrose Insider Trades & Stock Holdings

General Counsel · Upstream Bio, Inc. · Latest filing Jun 16, 2026

Allison Ambrose, General Counsel at Upstream Bio, Inc. has 1 Form 4 trade on file since Jun 16, 2026. Open-market activity: 0 purchases ($0) and 1 sale ($2.91K), net -$2.91K. Latest filing: disposed of 477 shares of $UPB on Jun 16, 2026 at $6.10.

Trades on file

1

Open-market bought

$0

Open-market sold

$2.91K

Net open-market

-$2.91K

Latest filing

Jun 16, 2026

All insider trades by Allison Ambrose

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Jun 16, 2026	$UPB	Sell (Open-market sale)	477	$6.10	$2.91K			+6.8%	+22.1%		General Counsel		—

"Buy" means shares acquired on the Form 4 (including grants and option exercises); "Sell" means shares disposed. 1W / 1M / 6M = how the stock moved after the trade.

Stocks Allison Ambrose traded

• $UPB

Frequently asked questions

Has Allison Ambrose been buying or selling stock?

Allison Ambrose has 0 open-market purchases and 1 open-market sale on file, net -$2.91K. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Allison Ambrose's latest insider trade?

disposed of 477 shares of $UPB on Jun 16, 2026 at $6.10.

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.