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GLSI — Greenwich LifeSciences Inc.

GLSI (Greenwich LifeSciences Inc.) stock: $15.17, $222.7M market cap, $8.9M cash, $213.8M EV, $271.6M fully diluted market cap. Next expected readout: Dec-31. Lead program: GLSI-100 (Breast Cancer), Phase 3. Data from Fully Diluted's biotech stocks database.

What they do

We are a clinical-stage biopharmaceutical company focused on our 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% of breast cancers at low (1+), intermediate (2+), and high (3+ or over-expressor) levels.

Source: 10-K FY2025 via SEC EDGAR

Share price
$15.17
Market cap
$222.7M
Cash
$8.9M
Enterprise value
$213.8M

Balance sheet

Cash$8.9M
Debt$0.0M
Net cash$8.9M
Enterprise value$213.8M
Basic shares14.7M shares
Fully diluted shares17.9M shares
Fully diluted market cap$271.6M
Cash per share$0.60
Quarterly burn$1.9M
Cash runway4.6 quarters

Cash figures as of 2026-06-30. Database snapshot: 2026-11-07.

Share structure

Common
14.7M
Pre-funded warrants
—
Options
3.2M
RSUs
0.0M
Warrants
0.0M
Converts
0.0M
Conv preferred
0.0M
ESPP reserve
—
FDSO
17.9M

Cap table as of 2026-07-24.

Price history

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Next catalyst

GLSI-100 · Jan 12 - Feb 23 in 63 mo · Phase 3 · Breast Cancer

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