GLSI insider trading
NasdaqCM HealthcareGreenwich LifeSciences, Inc.: insider trade history from SEC Form 4 filings.
About Greenwich LifeSciences, Inc.
Greenwich LifeSciences, Inc., a clinical-stage biopharmaceutical company, develops novel cancer immunotherapies for breast cancer and other HER2/neu-expressing cancers in the United States and Romania. Its lead product candidate is GP2, an immunotherapy, which is in Phase III clinical trial to prevent breast cancer recurrences in patients who have previously undergone surgery. The company also develops FLAMINGO-01, which is in Phase III clinical trial designed to evaluate the safety and efficacy of GLSI-100 (GP2 + GM-CSF) in HER2 positive breast cancer patients. Greenwich LifeSciences, Inc. was formerly known as Norwell, Inc. and changed its name to Greenwich LifeSciences, Inc. in March 2018. The company was incorporated in 2006 and is headquartered in Stafford, Texas.
Company website: greenwichlifesciences.com
GLSI insider activity at a glance
FilingIQ tracks 144 insider transactions for GLSI in filings since Sep 29, 2020. The most recent transaction is dated Jul 29, 2026.
Across the full history, 122 open-market purchases
and 0 open-market sales
were filed under transaction codes P and S respectively. Compensatory share awards
(code A) and option exercises (code M) are tracked separately and not counted here.
How FilingIQ classifies each line, and the seven facts it shows on every open-market purchase and sale, are documented on the methodology page.
Latest GLSI Form 4 filings
Most recent disclosures. Sign up to filter by transaction code, insider role or dollar value.
Other Healthcare tickers with recent insider activity
Most active insiders at GLSI
By number of Form 4 lines in the last 180 days.
Frequently asked
- How many insider trades does FilingIQ track for GLSI?
- FilingIQ tracks 144 Form 4 insider transactions for GLSI (Greenwich LifeSciences, Inc.), covering filings from Sep 29, 2020 onwards. 3 of those are dated within the last 90 days.
- Are GLSI insiders net buyers or net sellers?
- Across the full Form 4 history for GLSI, 122 transactions (85%) were open-market purchases and 0 (0%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
- Where does GLSI insider data come from?
- Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ links every filing to the insider's SEC CIK, marks plan trades, tax withholding, option exercises, gifts, derivatives and amendments, and shows each open-market purchase and sale with the same fixed facts. It does not rate the stock.
- What sector is GLSI in?
- Greenwich LifeSciences, Inc. (GLSI) is classified in the Healthcare sector, specifically Biotechnology, with a current market capitalisation of $360.08M.
Methodology & sources
Every GLSI insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). How lines are classified and which facts FilingIQ adds is documented on the methodology page; the people behind it are on the team page. Not investment advice; see disclaimer.