20.53
price down icon3.21%   -0.68
after-market After Hours: 20.24 -0.29 -1.41%
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Greenwich Lifesciences Inc stock is traded at $20.53, with a volume of 232.72K. It is down -3.21% in the last 24 hours and up +129.64% over the past month. Greenwich LifeSciences Inc a clinical-stage biopharmaceutical company focused on its Phase III clinical trial, Flamingo-01, which is evaluating GLSI-100, an immunotherapy to prevent breast cancer recurrences. GP2 is a 9 amino acid transmembrane peptide of the HER2/neu protein, a cell surface receptor protein that is expressed in a variety of common cancers, including expression in 75 percent of breast cancers at low (1+), intermediate (2+), and high (3+ or over-expressor) levels. The combination of GP2 + GM-CSF is called GLSI-100. The company is currently expanding Flamingo-01 into Europe with plans to open up to 150 sites globally.
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Previous Close:
$21.21
Open:
$21.04
24h Volume:
232.72K
Relative Volume:
0.80
Market Cap:
$284.43M
Revenue:
-
Net Income/Loss:
$-8.89M
P/E Ratio:
-29.33
EPS:
-0.7
Net Cash Flow:
$-6.48M
1W Performance:
-6.34%
1M Performance:
+129.64%
6M Performance:
+104.69%
1Y Performance:
+56.60%
1-Day Range:
Value
$20.05
$21.42
1-Week Range:
Value
$18.54
$21.99
52-Week Range:
Value
$7.78
$30.82

Greenwich Lifesciences Inc Stock (GLSI) Company Profile

Name
Name
Greenwich Lifesciences Inc
Name
Phone
203-434-3290
Name
Address
3992 BLUEBONNET DR, BUILDING 14, STAFFORD
Name
Employee
8
Name
Twitter
Name
Next Earnings Date
2025-08-18
Name
Latest SEC Filings
Name
GLSI's Discussions on Twitter

Compare GLSI with other stocks

Stocks Price Market Cap Revenue Net Income Cash Flow EPS
Biotechnology icon
GLSI
Greenwich Lifesciences Inc
20.53 293.85M 0 -8.89M -6.48M -0.70
Biotechnology icon
VRTX
Vertex Pharmaceuticals Inc
468.38 113.87B 11.74B 3.68B 3.34B 14.19
Biotechnology icon
REGN
Regeneron Pharmaceuticals Inc
776.54 80.22B 14.25B 4.58B 3.88B 41.77
Biotechnology icon
ALNY
Alnylam Pharmaceuticals Inc
406.40 52.56B 3.21B 43.57M 221.36M 0.2405
Biotechnology icon
ARGX
Argen X Se Adr
803.74 49.31B 3.06B 1.28B 447.35M 19.67
Biotechnology icon
INSM
Insmed Inc
175.07 37.37B 447.02M -1.18B -906.14M -6.1812

Greenwich Lifesciences Inc Stock (GLSI) Upgrades & Downgrades

Date Action Analyst Rating Change
Aug-20-25 Initiated Noble Capital Markets Outperform
Sep-01-21 Initiated H.C. Wainwright Buy

Greenwich Lifesciences Inc Stock (GLSI) Latest News

pulisher
05:30 AM

Greenwich LifeSciences (NASDAQ:GLSI) CEO Snehal Patel Acquires 4,300 Shares - Defense World

05:30 AM
pulisher
Jan 05, 2026

A US$74m drop in the market cap of Greenwich LifeSciences, Inc. (NASDAQ:GLSI) is not what insiders like to see after purchasing shares recently - simplywall.st

Jan 05, 2026
pulisher
Jan 05, 2026

Insider Buying: Greenwich LifeSciences (NASDAQ:GLSI) CEO Acquires 4,300 Shares of Stock - MarketBeat

Jan 05, 2026
pulisher
Jan 05, 2026

Head-To-Head Analysis: Greenwich LifeSciences (NASDAQ:GLSI) vs. Avalon GloboCare (NASDAQ:ALBT) - Defense World

Jan 05, 2026
pulisher
Jan 04, 2026

Snehal Patel Purchases 2,900 Shares of Greenwich LifeSciences (NASDAQ:GLSI) Stock - Defense World

Jan 04, 2026
pulisher
Jan 04, 2026

Is Lehar Footwears Limited Poised for a PostEarnings RallyVolatility Adjusted Trading & Free Exceptional Risk Adjusted Gains - earlytimes.in

Jan 04, 2026
pulisher
Jan 02, 2026

Insider Buying: Snehal Patel Acquires Additional Shares of Green - GuruFocus

Jan 02, 2026
pulisher
Jan 02, 2026

Patel, Greenwich Lifesciences CEO, buys $63k in GLSI stock By Investing.com - Investing.com Nigeria

Jan 02, 2026
pulisher
Jan 02, 2026

Greenwich LifeSciences (NASDAQ:GLSI) CEO Snehal Patel Buys 2,900 Shares - MarketBeat

Jan 02, 2026
pulisher
Jan 02, 2026

Patel, Greenwich Lifesciences CEO, buys $63k in GLSI stock - Investing.com

Jan 02, 2026
pulisher
Jan 01, 2026

FY2025 Earnings Estimate for GLSI Issued By HC Wainwright - MarketBeat

Jan 01, 2026
pulisher
Dec 31, 2025

How (GLSI) Movements Inform Risk Allocation Models - Stock Traders Daily

Dec 31, 2025
pulisher
Dec 31, 2025

New milestone in breast cancer prevention claimed by Greenwich - The Pharma Letter

Dec 31, 2025
pulisher
Dec 30, 2025

Greenwich LifeSciences extends insider share lock-up to Sept 2026 By Investing.com - Investing.com Nigeria

Dec 30, 2025
pulisher
Dec 29, 2025

Greenwich LifeSciences stock soars after extending insider lock-up By Investing.com - Investing.com South Africa

Dec 29, 2025
pulisher
Dec 29, 2025

Greenwich LifeSciences stock soars after extending insider lock-up - Investing.com India

Dec 29, 2025
pulisher
Dec 29, 2025

What's Going On With Greenwich LifeSciences Stock Monday? - One News Page

Dec 29, 2025
pulisher
Dec 29, 2025

12 Health Care Stocks Moving In Monday's Intraday Session - Benzinga

Dec 29, 2025
pulisher
Dec 29, 2025

Greenwich LifeSciences Takes Flight As FLAMINGO 01 Breast Cancer Trial Progresses - RTTNews

Dec 29, 2025
pulisher
Dec 29, 2025

Why Did GLSI Stock Surge 25% Today? - Stocktwits

Dec 29, 2025
pulisher
Dec 29, 2025

Greenwich LifeSciences extends lock-up of shares to September 2026 - marketscreener.com

Dec 29, 2025
pulisher
Dec 29, 2025

Greenwich LifeSciences Extends Lock-Up Of Shares To September 2026 - TradingView — Track All Markets

Dec 29, 2025
pulisher
Dec 29, 2025

Greenwich LifeSciences Extends Share Lock-Up to September For Directors, Officers - marketscreener.com

Dec 29, 2025
pulisher
Dec 29, 2025

Greenwich LifeSciences extends insider share lock-up to Sept 2026 - Investing.com

Dec 29, 2025
pulisher
Dec 29, 2025

Greenwich LifeSciences, Inc. Announces Extension of Lock-Up Period for Shares to September 30, 2026 - Quiver Quantitative

Dec 29, 2025
pulisher
Dec 29, 2025

Biotech locks insiders out of selling stock for six years to back cancer trial - Stock Titan

Dec 29, 2025
pulisher
Dec 27, 2025

Greenwich LifeSciences (NASDAQ:GLSI) Raised to "Hold" at Wall Street Zen - MarketBeat

Dec 27, 2025
pulisher
Dec 27, 2025

Greenwich LifeSciences (NASDAQ:GLSI) Raised to “Hold” at Wall Street Zen - Defense World

Dec 27, 2025
pulisher
Dec 26, 2025

What's Going On With Greenwich LifeSciences Friday? - Sahm

Dec 26, 2025
pulisher
Dec 23, 2025

Greenwich LifeSciences Provides Additional Updates on FLAMINGO-01 and Corporate Strategy - Sahm

Dec 23, 2025
pulisher
Dec 22, 2025

Greenwich LifeSciences provides updates on Phase III breast cancer trial By Investing.com - Investing.com Nigeria

Dec 22, 2025
pulisher
Dec 22, 2025

Greenwich Life Sciences Provides Updates On Breast Cancer Study; Outlines Corporate Strategy - Nasdaq

Dec 22, 2025
pulisher
Dec 22, 2025

Greenwich LifeSciences says burn rate for 2025 $7M through first three quarters - TipRanks

Dec 22, 2025
pulisher
Dec 22, 2025

Greenwich LifeSciences provides updates on Phase III breast cancer trial - Investing.com

Dec 22, 2025
pulisher
Dec 22, 2025

Greenwich LifeSciences Provides Updates on Phase III FLAMINGO-01 Clinical Trial and Corporate Strategy - Quiver Quantitative

Dec 22, 2025
pulisher
Dec 22, 2025

Insider Buying: Greenwich LifeSciences (NASDAQ:GLSI) CEO Buys $51,742.00 in Stock - Defense World

Dec 22, 2025
pulisher
Dec 21, 2025

How strong is Greenwich LifeSciences Inc. stock revenue growth2025 Retail Activity & Fast Gaining Stock Strategy Reports - bolumsonucanavari.com

Dec 21, 2025
pulisher
Dec 20, 2025

Why Greenwich LifeSciences Inc. stock is a must watch in 2025Profit Target & Low Risk High Reward Trade Ideas - Улправда

Dec 20, 2025
pulisher
Dec 20, 2025

(GLSI) Price Dynamics and Execution-Aware Positioning - Stock Traders Daily

Dec 20, 2025
pulisher
Dec 20, 2025

Aug PreEarnings: Will Greenwich LifeSciences Inc. stock maintain momentum in 2025 - Улправда

Dec 20, 2025
pulisher
Dec 20, 2025

Will Greenwich LifeSciences Inc. stock maintain momentum in 2025July 2025 Sector Moves & Capital Efficiency Focused Strategies - Улправда

Dec 20, 2025
pulisher
Dec 20, 2025

Noble Financial Sticks to Their Buy Rating for Greenwich LifeSciences (GLSI) - The Globe and Mail

Dec 20, 2025
pulisher
Dec 20, 2025

Is Greenwich LifeSciences Inc. stock positioned well for digital economyQuarterly Earnings Report & Technical Pattern Based Signals - Улправда

Dec 20, 2025
pulisher
Dec 19, 2025

Insider Buying: Greenwich LifeSciences (NASDAQ:GLSI) CEO Purchases 4,100 Shares of Stock - MarketBeat

Dec 19, 2025
pulisher
Dec 19, 2025

Will Greenwich LifeSciences Inc. stock outperform growth indexes2025 Trading Volume Trends & Low Volatility Stock Recommendations - DonanımHaber

Dec 19, 2025
pulisher
Dec 19, 2025

Will Greenwich LifeSciences Inc. stock benefit from upcoming earnings reports2025 Bull vs Bear & Free Low Drawdown Momentum Trade Ideas - Улправда

Dec 19, 2025
pulisher
Dec 18, 2025

Greenwich LifeSciences Stockholders Reelect Board and Auditor - TipRanks

Dec 18, 2025
pulisher
Dec 18, 2025

Greenwich LifeSciences (GLSI) reports 2025 shareholder votes and auditor approval - Stock Titan

Dec 18, 2025

Greenwich Lifesciences Inc Stock (GLSI) Financials Data

Revenue

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Net Income

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Cash Flow

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EPS

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$40.65
price up icon 2.52%
$33.10
price up icon 4.09%
$106.66
price up icon 4.78%
$98.09
price up icon 1.28%
biotechnology ONC
$320.35
price up icon 0.02%
$175.07
price down icon 0.07%
Cap:     |  Volume (24h):