GLSI (Greenwich LifeSciences) Shares Buyback Ratio %: -8.94 (As of Aug. 12, 2026)

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GLSI Greenwich LifeSciences Inc GLSI
35 GF Score
Price $16.90
! 1 Warning Sign
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What is Greenwich LifeSciences Shares Buyback Ratio %?

Greenwich LifeSciences GLSI +8.81% 35 Shares Buyback Ratio % is -8.94 as of Aug. 12, 2026. GuruFocus rates GLSI with a GF Score™ of 35/100. The stock has 1 warning sign investors should review.

Shares Outstanding (EOP) are shares that have been authorized, issued, and purchased by investors and are held by them.

GuruFocus calculates shares buyback ratio using previous shares outstanding minus the current shares outstanding, and then divides by previous shares outstanding. Greenwich LifeSciences's current shares buyback ratio was -8.94%.

Greenwich LifeSciences Shares Buyback Ratio % Related Terms

Greenwich LifeSciences Shares Buyback Ratio % Historical Data

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The historical data trend for Greenwich LifeSciences's Shares Buyback Ratio % can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Greenwich LifeSciences Shares Buyback Ratio % Chart

Greenwich LifeSciences Annual Data
Trend Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shares Buyback Ratio %
Get a 7-Day Free Trial -3.49 2.28 0.00 -2.37 -8.71

Greenwich LifeSciences Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Shares Buyback Ratio % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only -2.12 -2.39 -3.65 -2.57 -0.08
GLSI
35GF Score
Greenwich LifeSciences Inc GLSI
Shares Buyback Ratio % is just one metric. See GF Score™, valuation, warning signs, and more.
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Greenwich LifeSciences Shares Buyback Ratio % Calculation

Greenwich LifeSciences's Shares Buyback Ratio for the fiscal year that ended in Dec. 2025 is calculated as

Shares Buyback Ratio=(Shares Outstanding (EOP) (A: Dec. 2024 ) - Shares Outstanding (EOP) (A: Dec. 2025 )) / Shares Outstanding (EOP) (A: Dec. 2024 )
=(13.153 - 14.298) / 13.153
=-8.71%

Greenwich LifeSciences's Shares Buyback Ratio for the quarter that ended in Jun. 2026 is calculated as

Shares Buyback Ratio=(Shares Outstanding (EOP) (A: Mar. 2026 ) - Shares Outstanding (EOP) (A: Jun. 2026 )) / Shares Outstanding (EOP) (A: Mar. 2026 )
=(14.666 - 14.678) / 14.666
=-0.08%

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Frequently Asked Questions Learn more about Shares Buyback Ratio % →
What does a Shares Buyback Ratio % of -8.94 mean?
Greenwich LifeSciences (GLSI) has a Shares Buyback Ratio % of -8.94 as of Aug. 12, 2026. Share buyback ratio is the percent change of a company's shares outstanding from two periods. View historical data on Greenwich LifeSciences and its competitors.
Is Greenwich LifeSciences' Shares Buyback Ratio % too high?
Greenwich LifeSciences' current Shares Buyback Ratio % is -8.94. Overall, Greenwich LifeSciences has a GF Score™ of 35/100, reflecting its overall financial health beyond just this single metric.
How does Greenwich LifeSciences' Shares Buyback Ratio % compare to PLX and DTIL?
Greenwich LifeSciences' Shares Buyback Ratio % of -8.94 can be compared against companies in the Biotechnology industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shares Buyback Ratio % for a Biotechnology company?
A good Shares Buyback Ratio % depends on the Biotechnology industry context. However, Shares Buyback Ratio % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shares Buyback Ratio % mean?
A high Shares Buyback Ratio % can signal that a stock is expensive relative to its fundamentals. Share buyback ratio is the percent change of a company's shares outstanding from two periods. View historical data on Greenwich LifeSciences and its competitors. Greenwich LifeSciences's current Shares Buyback Ratio % is -8.94. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Greenwich LifeSciences stock overvalued right now?
Greenwich LifeSciences (GLSI) has a current Shares Buyback Ratio % of -8.94. The current Shares Buyback Ratio % is -8.94. Greenwich LifeSciences' overall GF Score™ is 35/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shares Buyback Ratio % calculated?
Shares Buyback Ratio % is calculated from a company's financial statements. For Greenwich LifeSciences (GLSI), the current Shares Buyback Ratio % is -8.94 as of Aug. 12, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Greenwich LifeSciences Business Description

Address 3992 Bluebonnet Drive, Building 14, Stafford, TX, USA, 77477
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 expression in 75 percent of breast cancers at low (1+), intermediate (2+), and high (3+ or over-expressor) levels. The combination of GP2 + GM-CSF is called GLSI-100. The company is currently expanding Flamingo-01 into Europe with plans to open up to 150 sites globally.
35GF Score

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Shares Buyback Ratio % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

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