GLSI

Greenwich Lifesciences Inc
NASDAQHEALTHCAREBIOTECHNOLOGY

Key Statistics

Market Cap
$300.02M
P/E Ratio
EPS
$-1.62
Beta
1.39
52W High
$34.10
52W Low
$7.78
50-Day MA
$24.13
200-Day MA
$19.69
Dividend Yield
Profit Margin
0.00%
Forward P/E
PEG Ratio

About Greenwich Lifesciences Inc

Greenwich LifeSciences, Inc., a clinical-stage biopharmaceutical company, focuses on the development of new cancer immunotherapies for breast and other HER2 / neu-expressing cancers. The company is headquartered in Stafford, Texas.

Official WebsiteUSAFY End: December

Fundamentals

Revenue (TTM)0
Gross Profit (TTM)0
EBITDA$-22.40M
Operating Margin0.00%
Return on Equity-677.00%
Return on Assets-211.30%
Revenue/Share (TTM)$0.00
Book Value$0.36
Price-to-Book60.97
Price-to-Sales (TTM)
EV/Revenue-
EV/EBITDA-21.23
Quarterly Earnings Growth (YoY)0.00%
Quarterly Revenue Growth (YoY)0.00%
Shares Outstanding$14.68M
Float$7.39M
% Insiders47.86%
% Institutions12.48%

Historical Volatility

HV 10-Day
148.50%
HV 20-Day
108.72%
HV 30-Day
109.59%
HV 60-Day
95.37%
HV Rank
80.2%

Volatility is currently expanding

Analyst Ratings

Consensus ($47.50 target)
2
Buy

Latest News

Greenwich LifeSciences Announces European Approval for Use of Commercially Manufactured GP2 in FLAMINGO-01

STAFFORD, Texas, July 09, 2026 (GLOBE NEWSWIRE) -- Greenwich LifeSciences, Inc. (Nasdaq: GLSI) (the "Company"), 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, today provided the following update on the use of commercially manufactured GP2 in FLAMINGO-01 in Europe.

GlobeNewsWire7/9/2026Neutral
Greenwich LifeSciences Presents FLAMINGO-01 Phase III Trial Open Label Data Published at ASCO Meeting 2026

STAFFORD, Texas, June 01, 2026 (GLOBE NEWSWIRE) -- Greenwich LifeSciences, Inc. (Nasdaq: GLSI) (the "Company"), a clinical-stage biopharmaceutical company focused on its Phase III clinical trial, FLAMINGO-01, which is evaluating Fast Track designated GLSI-100, an immunotherapy to prevent breast cancer recurrences, today presents the published abstract and poster from the ASCO Annual Meeting 2026.

GlobeNewsWire6/1/2026Neutral
Greenwich LifeSciences Provides Update Regarding Form 10-K Filing

STAFFORD, Texas, June 01, 2026 (GLOBE NEWSWIRE) -- Greenwich LifeSciences, Inc. (Nasdaq: GLSI) (the "Company"), a clinical-stage biopharmaceutical company focused on its Phase III clinical trial, FLAMINGO-01, which is evaluating Fast Track designated GLSI-100, an immunotherapy to prevent breast cancer recurrences, today provided an update on its Form 10-K filing for the fiscal year ending December 31, 2025.

GlobeNewsWire6/1/2026Neutral
Greenwich LifeSciences Announces Receipt of Nasdaq Notice Regarding Late Form 10-Q Filing

STAFFORD, Texas, May 22, 2026 (GLOBE NEWSWIRE) -- Greenwich LifeSciences, Inc. (Nasdaq: GLSI) ("Greenwich" or the "Company"), a clinical-stage biopharmaceutical company focused on its Phase III clinical trial, FLAMINGO-01, which is evaluating Fast Track designated GLSI-100, an immunotherapy to prevent breast cancer recurrences, today announced that on May 20, 2026, the Company received notification from the Listing Qualifications Department of The Nasdaq Stock Market LLC notifying the Company that, because it has not yet filed its Quarterly Report on Form 10-Q for the three months ended March 31, 2026, the Company is not currently in compliance with Nasdaq Listing Rule 5250(c)(1), which requires timely filing of periodic financial reports with the Securities and Exchange Commission. The notice has no immediate effect on the listing or trading of the Company's common stock, which continues to trade on the Nasdaq Capital Market under the symbol "GLSI."

GlobeNewsWire5/22/2026Neutral
Greenwich LifeSciences Provides Update Regarding Form 10-K Filing

STAFFORD, Texas, April 30, 2026 (GLOBE NEWSWIRE) -- Greenwich LifeSciences, Inc. (Nasdaq: GLSI) (the "Company"), a clinical-stage biopharmaceutical company focused on its Phase III clinical trial, FLAMINGO-01, which is evaluating Fast Track designated GLSI-100, an immunotherapy to prevent breast cancer recurrences, today provided an update on its Form 10-K filing for the fiscal year ending December 31, 2025.

GlobeNewsWire4/30/2026Neutral
Greenwich LifeSciences Announces Acceptance of Abstract at ASCO 2026

STAFFORD, Texas, April 23, 2026 (GLOBE NEWSWIRE) -- Greenwich LifeSciences, Inc. (Nasdaq: GLSI) (the "Company"), a clinical-stage biopharmaceutical company focused on its Phase III clinical trial, FLAMINGO-01, which is evaluating Fast Track designated GLSI-100, an immunotherapy to prevent breast cancer recurrences, today announced that an abstract has been accepted for publication at the upcoming 2026 ASCO Annual Meeting along with a corresponding poster presentation.

GlobeNewsWire4/23/2026Neutral
Greenwich LifeSciences Presents FLAMINGO-01 Phase III Trial Open Label Data Published at AACR Meeting 2026

STAFFORD, Texas, April 20, 2026 (GLOBE NEWSWIRE) -- Greenwich LifeSciences, Inc. (Nasdaq: GLSI) (the "Company"), a clinical-stage biopharmaceutical company focused on its Phase III clinical trial, FLAMINGO-01, which is evaluating Fast Track designated GLSI-100, an immunotherapy to prevent breast cancer recurrences, today presents the published abstract and poster from the AACR Meeting 2026.

GlobeNewsWire4/20/2026Neutral
Greenwich LifeSciences Provides Update on Financing Strategy

STAFFORD, Texas, April 14, 2026 (GLOBE NEWSWIRE) -- Greenwich LifeSciences, Inc. (Nasdaq: GLSI) (the "Company"), a clinical-stage biopharmaceutical company focused on its Phase III clinical trial, FLAMINGO-01, which is evaluating Fast Track designated GLSI-100, an immunotherapy to prevent breast cancer recurrences, today provided additional updates on its financing strategy.

GlobeNewsWire4/14/2026Neutral
Greenwich LifeSciences: 'Buy' On Recent Open-Label Data And Patent Claim

Greenwich LifeSciences (GLSI) remains a "Buy" as phase 3 FLAMINGO-01 advances in HER2-positive breast cancer with two major program updates. Open-label data from FLAMINGO-01 showed an 80% recurrence reduction in non-HLA-A*02 patients, supporting expanded protocol and potential market doubling. Company filed new patent claims based on statistically significant immune response and recurrence open-label data, potentially extending protection through 2045 if upheld.

Seeking Alpha4/7/2026Positive
Greenwich LifeSciences Provides Update on Patent Claims Potentially Doubling GP2 Market Potential

STAFFORD, Texas, April 07, 2026 (GLOBE NEWSWIRE) -- Greenwich LifeSciences, Inc. (Nasdaq: GLSI) (the "Company"), a clinical-stage biopharmaceutical company focused on its Phase III clinical trial, FLAMINGO-01, which is evaluating Fast Track designated GLSI-100, an immunotherapy to prevent breast cancer recurrences, today provided an update on new patent claims based on FLAMINGO-01 statistically significant open label immune response and recurrence rate data.

GlobeNewsWire4/7/2026Neutral

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Data last updated: 7/9/2026