Greenwich LifeSciences, Inc.

Greenwich LifeSciences, Inc.

GLSI·NASDAQ

$24.29

-15%
HealthcareBiotechnology

Greenwich LifeSciences, Inc., a clinical stage biopharmaceutical company, focuses on the development of novel cancer immunotherapies for breast cancer and other HER2/neu-expressing cancers. Its lead product candidate is the GP2, an immunotherapy, which has completed Phase IIb clinical trial to prevent breast cancer recurrences in patients who have previously undergone surgery. The company was formerly known as Norwell, Inc. and changed its name to Greenwich LifeSciences, Inc. in March 2018. Greenwich LifeSciences, Inc. was incorporated in 2006 and is headquartered in Stafford, Texas.

At a Glance

Live Snapshot
Market Cap$356.53M
EPS-1.4300
P/E Ratio-16.99
Earnings Date06/02/2026
288.60%
Return on Invested Capital
-146%
3Y-574.0%
5Y-4421.0%
10Y-3.0%
-1081.25%
Return on Equity
74%
3Y+1726.0%
5Y+15944.0%
10Y-5962.0%
287.27%
Return on Assets
-174%
3Y-595.0%
5Y-4524.0%
10Y-105.0%
Greenwich LifeSciences, Inc.

Greenwich LifeSciences, Inc. Management Team

GLSI · NASDAQ
MS

Mr. Snehal S. Patel

Chief Executive Officer, Chief Financial Officer & Director

Compensation

$918,844

Born 1964(Age 62)
male
DF

Dr. Frank Joseph Daugherty M.D.

Chief Medical Officer & Director

Born 1951(Age 75)
ME

Mr. Eric Rothe

Founder & Independent Director

Born 1975(Age 51)
male
DJ

Dr. Jaye L. Thompson Ph.D.

Vice President Clinical & Regulatory Affairs

Born 1966(Age 60)
DC

Dr. Christine T. Fischette Ph.D.

Vice President of Business Development

Born 1951(Age 75)
glsi

Greenwich LifeSciences, Inc. Insider Positioning

GLSI · NASDAQ

During the last 12 months, insiders have purchased $489K worth of GLSI shares, with no selling activity reported.

3 Months

Bought

0

0.00

Sold

0

0.00

Net Activity

+0

+$0

3-6 Months

Bought

16.0K

340.17K

Sold

0

0.00

Net Activity

+340K

+$340K

6-9 Months

Bought

17.5K

149.16K

Sold

0

0.00

Net Activity

+149K

+$149K

9-12 Months

Bought

0

0.00

Sold

0

0.00

Net Activity

+0

+$0

Top Buyers

1
PS

Patel Snehal

Director, 10 Percent Owner, Officer: Ceo And Cfo

33.5K shares8 transactions

$489K

Top Sellers

No selling activity

Insider Activity Analysis

Net Insider Sentiment

Bullish

Strong bullish signal with $489K net buying. Insiders are aggressively accumulating shares, suggesting significant confidence in future prospects.

Buy/Sell Ratio

∞:1

Perfect buy/sell ratio. Only buying activity with zero selling—the most bullish possible insider signal.

Insider Participation

High Buying

1 insider buyers vs. 0 sellers. Broad-based buying across management team suggests widespread confidence.

Insider Activity Insight

Unanimous insider buying: Zero selling combined with active buying is rare and typically very bullish. Insiders appear to see significant upside with limited downside risk.

SEC Filings

GLSI - Filing history and reports

Filing TypeFiling DatePeriod EndingFiscal YearActions
DEF 14A

DEF 14A 2025

N/A

November 03, 2025
November 03, 2025
2025
DEF 14A

DEF 14A 2024

N/A

November 01, 2024
November 01, 2024
2024
DEF 14A

DEF 14A 2023

N/A

October 25, 2023
October 24, 2023
2023
DEF 14A

DEF 14A 2022

N/A

October 19, 2022
October 19, 2022
2022
DEF 14A

DEF 14A 2021

N/A

October 19, 2021
October 19, 2021
2021
Showing 1 to 5 of 5 filings