ATOS (Atossa Therapeutics) Book Value per Share: $3.54 (As of Mar. 2026)


ATOS Atossa Therapeutics Inc ATOS
30 GF Score
Price $1.93
! 2 Warning Signs
View Full Analysis

What is Atossa Therapeutics Book Value per Share?

Atossa Therapeutics ATOS -2.03% 30 Book Value per Share is $3.54 as of Mar. 2026. GuruFocus rates ATOS with a GF Score™ of 30/100. The stock has 2 warning signs investors should review.

Atossa Therapeutics's book value per share for the quarter that ended in Mar. 2026 was $3.54.

During the past 12 months, Atossa Therapeutics's average Book Value Per Share Growth Rate was -53.30% per year. During the past 3 years, the average Book Value Per Share Growth Rate was -31.10% per year. During the past 5 years, the average Book Value Per Share Growth Rate was -14.40% per year. During the past 10 years, the average Book Value Per Share Growth Rate was -29.00% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the book value growth rate using book value per share data.

During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Atossa Therapeutics was 50.10% per year. The lowest was -66.60% per year. And the median was -32.05% per year.

Atossa Therapeutics's current price is $1.93. Its book value per share for the quarter that ended in Mar. 2026 was $3.54. Hence, today's PB Ratio of Atossa Therapeutics is 0.55.

During the past 13 years, the highest P/B Ratio of Atossa Therapeutics was 4.76. The lowest was 0.01. And the median was 0.09.

Warning Sign:

Atossa Therapeutics Inc stock PB Ratio (=0.56) is close to 5-year high of 0.56.


Atossa Therapeutics  (NAS:ATOS) Book Value per Share Explanation

Usually a company's book value and Tangible Book per Share may not reflect its true value. The assets may be carried on the balance sheets at the original cost minus depreciation. This may underestimate the true economic values of the assets. It also may over-estimate their true economic value because the assets can become obsolete.

For financial companies such as banks and insurance companies, their assets may be reported in current market value of the assets owned. Book values of financial companies are more accurate indicator of the economic value of the company.


Atossa Therapeutics Book Value per Share Related Terms


Atossa Therapeutics Book Value per Share Historical Data

* Premium members only.

The historical data trend for Atossa Therapeutics's Book Value per Share 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.

Atossa Therapeutics Book Value per Share Chart

Atossa Therapeutics Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Book Value per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 16.36 13.97 10.90 8.30 4.57

Atossa Therapeutics Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Book Value per Share 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 7.59 6.70 5.78 4.57 3.54

ATOS vs QNCX, ZIVO, KTTA: Book Value per Share Comparison

For the Biotechnology subindustry, Atossa Therapeutics's PB Ratio, along with its competitors' market caps and PB Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Atossa Therapeutics PB Ratio vs Biotechnology Industry

For the Biotechnology industry and Healthcare sector, Atossa Therapeutics's PB Ratio distribution charts can be found below:

* The bar in red indicates where Atossa Therapeutics's PB Ratio falls into.


ATOS
30GF Score
Atossa Therapeutics Inc ATOS
Book Value per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Atossa Therapeutics Book Value per Share Calculation

Atossa Therapeutics's Book Value Per Share for the fiscal year that ended in Dec. 2025 is calculated as:

Book Value Per Share=(Total Stockholders Equity-Preferred Stock)/Shares Outstanding (EOP)
=(39.35-0.00)/8.61
=4.57

Atossa Therapeutics's Book Value Per Share for the quarter that ended in Mar. 2026 is calculated as:

Book Value Per Share=(Total Stockholders Equity-Preferred Stock)/Shares Outstanding (EOP)
=(30.49-0.00)/8.61
=3.54

* 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.

Theoretically it is what the shareholders will receive if the company is liquidated. Total Stockholders Equity is a balance sheet item and equal to Total Assets less Total Liabilities of the company.

Book value may include intangible items which may come from the company's past acquisitions. Book value less intangibles is called Tangible Book.

Frequently Asked Questions Learn more about Book Value per Share →
What does a Book Value per Share of $3.54 mean?
Atossa Therapeutics (ATOS) has a Book Value per Share of $3.54 as of Mar. 2026. Book value per share gives the per-share value of a company's stockholder equity. View historical data on Atossa Therapeutics and its competitors.
Is Atossa Therapeutics' Book Value per Share too high?
Atossa Therapeutics' current Book Value per Share is $3.54. Overall, Atossa Therapeutics has a GF Score™ of 30/100, reflecting its overall financial health beyond just this single metric.
How does Atossa Therapeutics' Book Value per Share compare to QNCX and ZIVO?
Atossa Therapeutics' Book Value per Share of $3.54 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 Book Value per Share for a Biotechnology company?
A good Book Value per Share depends on the Biotechnology industry context. However, Book Value per Share 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 Book Value per Share mean?
A high Book Value per Share can signal that a stock is expensive relative to its fundamentals. Book value per share gives the per-share value of a company's stockholder equity. View historical data on Atossa Therapeutics and its competitors. Atossa Therapeutics's current Book Value per Share is $3.54. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Atossa Therapeutics stock overvalued right now?
Atossa Therapeutics (ATOS) has a current Book Value per Share of $3.54. The current Book Value per Share is $3.54. Atossa Therapeutics' overall GF Score™ is 30/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Book Value per Share calculated?
Book Value per Share is calculated from a company's financial statements. For Atossa Therapeutics (ATOS), the current Book Value per Share is $3.54 as of Mar. 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.

Atossa Therapeutics Business Description

Other Exchanges ATOS:MexicoYAG:Germany
Address 1448 NW Market Street, Suite 500, Seattle, WA, USA, 98107
Atossa Therapeutics Inc is a clinical-stage biopharmaceutical company engaged in the development of proprietary medicines for oncology, with a focus on breast cancer and related conditions. The company's lead product candidate, oral (Z)-endoxifen, is a selective estrogen receptor modulator and degrader (SERM/SERD) in Phase 2 clinical development, being evaluated for the treatment and prevention of breast cancer and other indications.
30GF Score

Get the complete analysis for ATOS

Book Value per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$1.93
Price