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Greenwich Lifesciences Inc (GLSI) fair value: what the stock is really worth

As of Nov 10, 2026: fair value (intrinsic value) of Greenwich Lifesciences Inc stock $7.13, price $16.07, that is 55.6% below the price, quality 43 out of 100. Rating: strongly overvalued. The value is an estimate: none of our valuation models currently carries, it draws on revenue and assets compared with similar companies. Updated daily.

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Healthcare US

GL Greenwich Lifesciences Inc logo Thin data Nov 10, 2026

Greenwich Lifesciences Inc

GLSI · US
Very expensive, weak quality

Our calculation puts a fair price 56% below what the stock costs today.

Ranks above peers (3/4)
Quality 43/100
Insiders bought $97,003 (6M)
Fair value $7.13 · Strongly overvalued
Negative free cash flow
Narrow moat 12/100 · thin data
Thin data
Estimate
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26 valuation models 8 families, DCF to NCAV 37 quality factors margins, balance sheet, cashflow, debt 6 AI factors moat, what no ratio measures 2,000+ data points verified, per stock, median

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Price vs Fair Value

$46.11 $7.14 Fair Value $7.13 Aug 2021 Nov 2026

White line = price, green steps = our fair value per fiscal year. As of Nov 10, 2026.

How to read this chart

60‑month range $7.14 – $46.11 · fair‑value band $5.35 – $8.91 · the $16.07 price screens above the $7.13 fair value. As of Nov 10, 2026.

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Company profile

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.

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Its lead product candidate is GP2, a HER2/neu transmembrane peptide, which is in Phase III clinical trial to prevent breast cancer recurrences in patients.

The company also develops FLAMINGO-01, which is in Phase IIb and 3 Phase I clinical trial designed to evaluate the safety and efficacy of GLSI-100 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.

Stock analysis

Greenwich Lifesciences Inc (GLSI) currently trades at $16.07, while our estimate is $7.13, 56% below the price, so the stock looks overvalued today.

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Valuation

None of our valuation models currently carries for this company, usually because of losses or heavy investment. The estimate draws on revenue and assets compared with similar companies and is less precise than a model-based fair value.

Scenario range: $5.35 (bear) to $8.91 (bull), the price of $16.07 sits above it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target.

Quality & growth

The Quality Score stands at 43/100 (below-average quality), in the Healthcare sector.

Greenwich Lifesciences Inc reported revenue of $0 in FY2025 versus $0 in FY2021. Reported net income was −$19.4M in FY2025.

Key figures

Market cap $235M Micro · EPS (TTM) $−1.53 · Return on equity −986% · Return on assets (EBIT) −160% (4-year average) · Free cash flow −$9.9M · Net debt $6.7M.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 12 out of 100 (low confidence).

What moves the price

The share trades about 52% below its 52-week high and 105% above its 52-week low, currently below its 200-day average.

For context, the median of 10 Healthcare peers we cover trades at −7% fair-value upside, at −56%, GLSI screens richer than that median.

Fair Value

Bear $5.35 Fair Value $7.13 Bull $8.91
Price $16.07 · Downside -55.6%
Estimate. None of our valuation models currently carries for this company, usually because of losses or heavy investment. The estimate draws on revenue and assets compared with similar companies and is less precise than a model-based fair value.

Quality Score breakdown

Overall quality 43/100

It rates the business: profits, how they develop, real cash, balance sheet, investing and share count.

Profitability 25
How much profit the company makes from its sales and capital
Quality Growth 75
Are margins and returns getting better?
Cashflow 1
Do the profits arrive as real cash?
Financial strength 67
Debt, balance sheet and risk of trouble
Investment 100
Does it invest with discipline instead of growing at any price?
Low Volatility 10
How calm the share price moves, does not count
Price momentum 48
Price momentum of the last 3 to 12 months, does not count
Near the 52-week high 66
Distance to the 52-week high, does not count
New shares 19
Buys back shares or issues new ones?

Open the full quality analysis →

Insider trades

In the last 6 months, one officer or director bought shares worth $97,003, on Jul 29, 2026.

  • BuySnehal PatelCEO and CFO, Director, 10% owner9× since Nov 25, 2025: 27,900 shares, avg. $17.05$475,672Jul 29, 2026

Sales are often planned (taxes, diversification, 10b5-1 plans). Purchases with their own money are seen as the stronger sign. For information only: not part of the quality score or Fair Value.

Source: SEC Form 4, as of Nov 10, 2026. All filings at the SEC ↗

Revenue & earnings trend

What shareholders gained per year ⓘWe only publish this rate when it is defensible. Reason: fiscal 2025 is a loss year, no rate is defined from a loss
not computed

GLSI screens overvalued: fair value 56% below the price. Compare with Vertex Pharmaceuticals Incorporated →

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Peer GroupⓘHow this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.Biotechnology · 849 stocks

Beats the industry median on 3/4 measures
Overall it ranks above its industry peers.
Valuation
Quality Score 43 · Above median
Fair Value upside −55.6% · Bottom 25%
Profitability
Operating margin (12 months) 0.0% · Above median
Growth and dividend
Revenue growth (quarter YoY) 0.0% · Above median

Context: sector, industry, market

Values & ESG

Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.

None of the checked exposures detected

Similar stocks

10 more Biotechnology stocks, each showing price versus our Fair Value estimate.

Stock Price Fair Value vs Fair Value Compare
Regeneron Pharmaceuticals, Inc REGN $916.06 $1,275 +39% vs GLSI
Samsung Biologics Co 207940 1,468,000 KRW 1,661,000 KRW +13% vs GLSI
Vertex Pharmaceuticals Incorporated VRTX $547.89 $601.80 +10% vs GLSI
Genmab A/S GMAB kr 3,581 kr 3,880 +8% vs GLSI
argenx SE ARGX $971.55 $908.40 −7% vs GLSI
CSL Limited CSL A$201.68 A$181.40 −10% vs GLSI
Moderna, Inc MRNA $250.83 $158.70 −37% vs GLSI
BeOne Medicines AG 6160 HK$252.20 HK$152.80 −39% vs GLSI
Celltrion, Inc 068270 203,000 KRW 74,945 KRW −63% vs GLSI
Royalty Pharma plc RPRX $69.45 $19.01 −73% vs GLSI

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Greenwich Lifesciences Inc: fair value per Fair Value Calculator

Cite: Fair Value Calculator (2026). "Greenwich Lifesciences Inc Fair Value". https://www.fairvalue-calculator.com/stock/GLSI

Frequently asked questions

Is Greenwich Lifesciences Inc (GLSI) overvalued or undervalued?
As of Nov 10, 2026, our estimate of fair value is $7.13 versus a price of $16.07, about 56% lower (overvalued).
What is the fair value of GLSI?
Our estimate for Greenwich Lifesciences Inc is $7.13 (as of Nov 10, 2026), built from audited fundamentals. The current price: $16.07.
What is the quality score of GLSI?
Greenwich Lifesciences Inc has a Quality Score of 43/100. It measures business quality (profitability, growth, cash flow, balance-sheet strength, investment discipline, share issuance). Market factors such as price momentum and volatility do not enter the number; they are shown separately in the detail view.
What is the price target for Greenwich Lifesciences Inc (GLSI)?
Our calculated price target is the estimate of $7.13 (as of Nov 10, 2026). Cautious scenario $5.35, optimistic scenario $8.91. It is an estimate from revenue and assets compared with similar companies, because none of our valuation models currently carries, not an analyst target.
What is the Greenwich Lifesciences Inc stock forecast for 2026?
Our estimate puts fair value at $7.13, about 56% lower versus a price of $16.07 (overvalued). Cautious scenario $5.35, optimistic scenario $8.91. The calculation is refreshed regularly with new filings.
What is the intrinsic value of Greenwich Lifesciences Inc (GLSI)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Greenwich Lifesciences Inc it is $7.13 per share (as of Nov 10, 2026), against a price of $16.07.
Is Greenwich Lifesciences Inc stock overvalued or undervalued in 2026?
As of Nov 10, 2026, GLSI trades above its calculated fair value: price $16.07, fair value $7.13, a gap of about −56% (overvalued). The calculation is refreshed with each new quarterly report, so the verdict can change during the year.
Is fair value the same as the market price of GLSI?
No. The price is what the market pays today ($16.07); the fair value is what the company's own numbers justify ($7.13). For Greenwich Lifesciences Inc the two are $8.94 per share apart. That gap is exactly why we show both numbers side by side.
How much is Greenwich Lifesciences Inc worth?
The market values Greenwich Lifesciences Inc at about $235M (market capitalisation, as of Nov 10, 2026). Per share that is $16.07; our models calculate a fair value of $7.13 per share.
What do the bullish and bearish scenarios say about GLSI?
Our models span a range for Greenwich Lifesciences Inc: cautious scenario $5.35, base $7.13, optimistic $8.91 per share (as of Nov 10, 2026, price $16.07). The range comes from different growth and margin assumptions, not from analyst opinions.
How far is GLSI from its 52-week high?
Greenwich Lifesciences Inc trades at $16.07, about 52% below its 52-week high of $33.57 and 105% above the low of $7.85 (as of Nov 10, 2026). Distance from the high says nothing about value: that is what the fair value of $7.13 is for.
Which stocks are comparable to Greenwich Lifesciences Inc?
From the same area (Healthcare) we also value Vertex Pharmaceuticals Incorporated, Moderna, Inc, Regeneron Pharmaceuticals, Inc, CSL Limited, among others. Each of them has its own fair-value calculation on this site using the same models, so the comparison is like for like.
Is Greenwich Lifesciences Inc stock attractive at the current price?
The data as of Nov 10, 2026: price $16.07, calculated fair value $7.13 (−56%), Quality Score 43/100. Whether that fits your horizon and risk tolerance is your call. We provide the calculation, not investment advice.
Is it still worth investing in stocks now?
The global stock market currently sits 15.1% above its aggregate fair value. Greenwich Lifesciences Inc itself currently trades above fair value. An expensive market is no reason to stay out and no reason to buy everything at once: keep a broad savings plan running, buy single stocks only with money you can do without, and hold part of your money liquid while the market is high. The full picture including sectors is on is it worth investing now.
What is the share price of Greenwich Lifesciences Inc (GLSI)?
The closing price on Nov 10, 2026 was $16.07. Our estimate is $7.13, about 56% lower (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Greenwich Lifesciences Inc right now?
The price sits above even our optimistic bull case ($8.91). The favourable scenario is already priced in. Weak quality (43/100) and above fair value at the same time, the margin of safety is missing on both counts. The large gap to fair value rests on thin data (low evidence): fewer applicable models and a shorter history. Read it with extra caution.

Key figures of Greenwich Lifesciences Inc

How large is the market capitalisation of Greenwich Lifesciences Inc (GLSI)?
The market capitalisation of Greenwich Lifesciences Inc is $235M. The stock-market value of the whole company: share price times number of shares. It is what the market asks for the entire business today.
What are the earnings per share of Greenwich Lifesciences Inc (GLSI)?
Earnings per share at Greenwich Lifesciences Inc are $−1.53. Earnings per share over the last twelve months: total profit spread across every single share.
What is the return on equity of Greenwich Lifesciences Inc (GLSI)?
The return on equity (ROE) of Greenwich Lifesciences Inc is −986% (last twelve months). Profit relative to shareholders' equity, how efficiently the company works with its owners' money.
What is the EBIT return on assets of Greenwich Lifesciences Inc (GLSI)?
On an EBIT basis the return on assets of Greenwich Lifesciences Inc is −160% (avg 4y). Operating profit (EBIT) relative to everything the company owns, as a multi-year average. It describes the business model rather than one good or bad year.
How much free cash flow does Greenwich Lifesciences Inc (GLSI) generate?
The free cash flow of Greenwich Lifesciences Inc is −$9.9M (fiscal year 2025). The cash truly left after running and investing in the business, this is what pays dividends and buybacks.
How much net debt does Greenwich Lifesciences Inc (GLSI) carry?
The net debt of Greenwich Lifesciences Inc is $6.7M (fiscal year 2025). Debt minus cash on hand. The note shows how many years of free cash flow could in theory pay it off.
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