Avoid the stress of overpaying for a stock or missing an opportunity by using the right tools and insights to evaluate OS Therapies Incorporated before investing.

In this article, we go over a few key elements for understanding OS Therapies Incorporated’s stock price such as:

• OS Therapies Incorporated’s current stock price and volume
• Why OS Therapies Incorporated’s stock price changed recently
• Upgrades and downgrades for OSTX from analysts
• OSTX’s stock price momentum as measured by its relative strength

About OS Therapies Incorporated (OSTX)

Before we jump into OS Therapies Incorporated’s stock price, history, target price and what caused it to recently rise, let’s take a look at some background.

OS Therapies Incorporated, a clinical stage biopharmaceutical company, focuses on the identification, development, and commercialization of treatments for osteosarcoma and other solid tumors in the United States. Its pipeline includes OST-HER2, an off-the-shelf immunotherapy for osteosarcoma patients; and OST-tunable drug conjugate (OST-tADC), an antibody-drug conjugate (ADC) silicone dioxide linker technology, with a plug-and-play platform that features tunable pH sensitive silicone linkers. OS Therapies Incorporated was incorporated in 2018 and is based in Grasonville, Maryland.

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OS Therapies Incorporated’s Stock Price as of Market Close

As of December 22, 2025, 4:00 PM, CST, OS Therapies Incorporated’s stock price was $1.600.

OS Therapies Incorporated is up 3.9% from its previous closing price of $1.540.

During the last market session, OS Therapies Incorporated’s stock traded between $1.550 and $1.690. Currently, there are approximately 31.96 million shares outstanding for OS Therapies Incorporated.

OS Therapies Incorporated’s trailing earnings per share are negative, so the stock does not have a meaningful P/E ratio. We suggest investors evaluate other financial metrics to understand its overall valuation.

OS Therapies Incorporated Stock Price History

OS Therapies Incorporated’s (OSTX) price is currently down 10.61% so far this month.

During the month of December, OS Therapies Incorporated’s stock price has reached a high of $2.090 and a low of $1.485.

Over the last year, OS Therapies Incorporated has hit prices as high as $7.000 and as low as $1.120. Year to date, OS Therapies Incorporated’s stock is down 62.62%.

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What Caused OS Therapies Incorporated Stock’s Price to Rise?

Stock prices are primarily based on seller supply and buyer demand. But have you ever wondered about what other factors affect a stock's price?

When an analyst changes their opinion of a stock by upgrading or downgrading their rating, it often leads to a sudden stock price adjustment. As of December 22, 2025, there was 1 analyst who downgraded OS Therapies Incorporated’s stock and 0 analysts who upgraded over the last month.

Additionally, you'll want to evaluate OS Therapies Incorporated’s financial health and valuation. Investors can use AAII's Value Grade, which combines six key valuation metrics like P/E and P/S ratios for a comprehensive analysis to conduct analysis on OS Therapies Incorporated’s valuation and financial health. This approach mitigates the limitations of single-metric evaluations.

Learn how to evaluate stocks with AAII Grades and Scores with A+ Investor today.

Lastly, news and media coverage as well as recent press reports about the company or its industry may cause stock prices to fluctuate. You can check out the most recent news articles about OS Therapies Incorporated (OSTX) by visiting AAII Stock Evaluator.

Relative Price Strength of OS Therapies Incorporated

Relative price strength measures a stock's performance against the market, helping investors identify stocks that are outperforming benchmarks.

For AAII’s Momentum Grade, a weighted relative price strength is calculated. Follow this link to learn more about the Momentum Grade.

As of December 22, 2025, OS Therapies Incorporated has a weighted four-quarter relative price strength of -19.80%, which translates to a Momentum Score of 10 and is considered to be Very Weak.

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OS Therapies Incorporated Stock Price: Bottom Line

As of December 22, 2025, OS Therapies Incorporated’s stock price is $1.600, which is up 3.9% from its previous closing price.

AAII advises against making stock decisions based solely on price or past returns. Instead, consider a variety of metrics, fundamentals, and analytics to evaluate a stock like OS Therapies Incorporated stock prices are influenced by market supply and demand and offer just a snapshot of a company's overall health.

Subscribing to AAII's A+ Investor provides access to comprehensive analytics and insights for confident investing.