Upstream Bio, Inc.

Biotechnology • Healthcare • Waltham, MA, United States • UPB (NMS)

Upstream Bio, Inc., a clinical-stage biotechnology company, develops treatments for inflammatory diseases focusing on severe respiratory disorders. It offers verekitug, which is in Phase 2 clinical development for the treatment of severe asthma and chronic rhinosinusitis with nasal polyps, and in Phase I clinical trial for treating chronic obstructive pulmonary disease. The company was incorporated in 2021 and is headquartered in Waltham, Massachusetts.

Stock Performance (90 Days)

Data through Dec 26, 2025

Price updates on page refresh. Intraday quotes available during market hours (9:30 AM - 4:00 PM EST).

Layoff History

No layoff events recorded for this company.

Recent News

Upstream Bio (NASDAQ:UPB) Shares Down 3.4% - Time to Sell? - MarketBeat

MarketBeat • Dec 30

Mizuho initiates Upstream Bio stock with Outperform rating on asthma drug potential - Investing.com

Investing.com • Dec 17

Upstream Bio (UPB): Evaluating Valuation After 10% Share Price Surge - Yahoo Finance

Yahoo Finance • Nov 25

CORRECTED: Chasing pharma heavyweights, Upstream posts phase 2 sinusitis win - Fierce Biotech

Fierce Biotech • Sep 2

Does Mizuho’s New Coverage of Upstream Bio (UPB) Reframe the Stock’s Risk‑Reward Narrative? - Sahm

Sahm • Dec 20

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Frequently Asked Questions

Has Upstream Bio, Inc. had layoffs?

No layoff events have been recorded for Upstream Bio, Inc. in our database. This could mean the company has not conducted significant layoffs, or any layoffs have not been publicly reported.

How many employees does Upstream Bio, Inc. have?

Upstream Bio, Inc. has approximately 52 employees.

What industry is Upstream Bio, Inc. in?

Upstream Bio, Inc. operates in the Biotechnology industry, within the Healthcare sector.

Is Upstream Bio, Inc. a publicly traded company?

Yes, Upstream Bio, Inc. is publicly traded under the ticker symbol UPB on the NMS. The company has a market capitalization of approximately $1.61 billion.

Where is Upstream Bio, Inc. headquartered?

Upstream Bio, Inc. is headquartered in Waltham, MA, United States.

Disclaimer

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