ATOSSA THERAPEUTICS, INC. (ATOS) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

Low Risk
Limited dilution potential
Last updated: May 08, 2026

Risk Assessment Details

Potential Dilution: 17.68% of current shares
Recent Dilution: 2.86% (2 years)
Historical Dilution Factor: minimal recent dilution
Outstanding Shares
8.6M
Potential Supply
1.5M
Additional shares possible
Splits
1 Split
Past 2 years

Summary

ATOS currently has 8.62M outstanding shares. with limited dilution risk as only 1.52M additional shares (17.7%) are authorized for issuance. The company has minimally diluted shareholders by 2.86% over the past 2 years. Recent corporate actions include 1 stock split (positive for accessibility).

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 08, 2026

10-Q filing | 8.6M shares outstanding

8.6M 1.5M
Mar 25, 2026

10-K filing | 8.6M shares outstanding

8.6M 1.5M
Feb 02, 2026
Stock Split

8-K filing: Stock split 15-for-1 | Outstanding: 129,170,004 → 8,611,333

8.6M 1.5M
May 13, 2025

10-Q filing | 129.2M shares outstanding

130M 23M
Mar 25, 2025

10-K filing | 125.9M shares outstanding

130M 26M
Nov 12, 2024

10-Q filing | 125.8M shares outstanding

130M 26M
Aug 12, 2024

10-Q filing | 125.7M shares outstanding

130M 26M
May 13, 2024

10-Q filing | 125.3M shares outstanding

130M 27M
May 13, 2024

S-3 filing: The company may offer and sell an indeterminate number of shares of its common stock, preferred stock, debt securities and warrants from time to time under this prospectus, with a total value of up to $100,000,000.

130M 26M
Apr 01, 2024

10-K filing | 126.1M shares outstanding

130M 0
Nov 13, 2023

10-Q filing | 125.8M shares outstanding

130M 0
Aug 14, 2023

10-Q filing | 126.6M shares outstanding

130M 0
May 15, 2023

10-Q filing | 126.6M shares outstanding

130M 0
Mar 22, 2023

10-K filing | 126.6M shares outstanding

130M 0
Nov 07, 2022

10-Q filing | 126.6M shares outstanding

130M 0
Aug 08, 2022

10-Q filing | 126.6M shares outstanding

130M 0
May 09, 2022

10-Q filing | 126.6M shares outstanding

130M 0
Feb 28, 2022

10-K filing | 126.6M shares outstanding

130M 0
Nov 15, 2021

10-Q filing | 126.6M shares outstanding

130M 0
Aug 13, 2021

10-Q filing | 125.9M shares outstanding

130M 0
May 14, 2021

10-Q filing | 120.8M shares outstanding

120M 0
Apr 21, 2021

S-3 filing: This is an S-3 filing for the resale of 13,020,825 shares of common stock by selling stockholders, issuable upon the exercise of warrants purchased in a private placement transaction on March 22, 2021.

120M 0
Mar 31, 2021

10-K filing | 120.8M shares outstanding

120M 0
Mar 23, 2021

8-K filing: Atossa Therapeutics, Inc. entered into a securities purchase agreement to sell 17,361,100 shares of common stock and warrants exercisable for up to 13,020,825 shares of common stock in a private placement, with net proceeds of approximately $46.4 million. ($50.0M proceeds)

10M 61M
Jan 22, 2021

S-3 filing: This S-3 filing covers the resale of 10,500,000 shares of common stock issuable upon the exercise of warrants by selling stockholders.

10M 61M
Jan 08, 2021

8-K filing: Atossa Therapeutics, Inc. entered into a securities purchase agreement to sell 23,850,000 shares of common stock and warrants to purchase 17,887,500 shares of common stock for a combined purchase price of $1.055 per share and warrant, resulting in net proceeds of approximately $23.3 million. ($25.15M proceeds)

10M 51M
Dec 21, 2020

8-K filing: Atossa Therapeutics, Inc. completed an offering of 14,000,000 shares of common stock and issued warrants exercisable for up to 10,500,000 shares of common stock in a private placement, with combined net proceeds of approximately $12.9 million. ($14.0M proceeds)

10M 51M
Dec 01, 2020

S-1/A filing: The company is offering up to 13,068,181 shares of common stock and warrants convertible into up to 9,801,136 shares of common stock, as well as units consisting of Series C convertible preferred stock convertible into up to 13,068,000 shares of common stock and warrants convertible into up to 9,801,136 shares of common stock, with a total proposed maximum aggregate offering price of $23,000,000.

10M 51M
Nov 13, 2020

10-Q filing | 10.5M shares outstanding

10M 38M
Sep 02, 2020

S-3 filing: Atossa Therapeutics, Inc. is filing an S-3 to register an indeterminate number of shares of common stock, preferred stock, debt securities, and warrants with an aggregate initial offering price not to exceed $100,000,000.

10M 38M
Aug 13, 2020

10-Q filing | 10.4M shares outstanding

10M 0
May 13, 2020

10-Q filing | 9.2M shares outstanding

9.2M 0
Mar 26, 2020

10-K filing | 9.1M shares outstanding

9.1M 0
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