# Greenwich (GLSI) — Overview

GLSI · NASDAQ · Stock

Canonical page: https://www.lighthorse.io/tickers/glsi

## Price

Last close $15.32 on Oct 15, 2026. 52-week range $7.85 – $33.57.

## Company profile

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 breast cancers at low (1+), intermediate (2+), and high (3+ or overexpressing) levels.

## Financials

| Metric | Value |
| --- | --- |
| Revenue (trailing twelve months) | $0.00 |
| Revenue (quarter) | $0.00 |
| Revenue growth (year over year) | 0.00% |
| Gross profit (trailing twelve months) | $0.00 |
| Gross margin | 0.00% |
| Net income (trailing twelve months) | $0.00 |
| Net income (quarter) | −$3.9M |
| Net income growth (year over year) | -5.34% |
| Net margin | 0.00% |
| Return on equity | -986.32% |
| EPS (trailing twelve months) | −$1.59 |
| Book value per share | $0.21 |
| P/E (trailing twelve months) | — |
| Price to book | 72.1 |
| Debt to assets | 64.88% |
| Payout ratio | 0.00% |
| Dividend yield | 0.00% |

## Frequently Asked Questions

### How do I buy stock in Greenwich (GLSI)?

GLSI trades commission-free with a Light Horse Securities brokerage account — from the mobile app, the web at [Light Horse Dashboard](https://portal.lighthorse.io), the trading API, or an [AI agent connected over MCP](/instructions/ai/claude). The trade panel on this page places the order once you are signed in.

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This page is for informational purposes only. Nothing on it is a recommendation, solicitation or offer to buy or sell any security, nor investment, legal or tax advice. Light Horse Securities Inc does not verify third-party data and is not responsible for its accuracy, completeness or timeliness.

Data provided by [AInvest](https://www.ainvest.com).