Atossa Therapeutics annual shares outstanding
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Atossa Therapeutics Shares Outstanding History (ATOS)
Atossa Therapeutics reported 576,961.187 shares outstanding at the end of fiscal 2025.
View full Atossa Therapeutics company overviewAtossa Therapeutics annual shares outstanding history
| Fiscal year | Period ended | Shares outstanding | Change | Growth |
|---|---|---|---|---|
| 2025 | 2025-12-31 | 576,961.187 | 6.365 | +0.00% |
| 2024 | 2024-12-31 | 576,954.822 | −7.8M | −93.13% |
| 2023 | 2023-12-31 | 8.4M | −88,443.082 | −1.04% |
| 2022 | 2022-12-31 | 8.5M | 7.37 | +0.00% |
| 2021 | 2021-12-31 | 8.5M | 5.3M | +166.30% |
| 2020 | 2020-12-31 | 3.2M | 2.6M | +420.75% |
| 2019 | 2019-12-31 | 611,775.928 | 220,056.944 | +56.18% |
| 2018 | 2018-12-31 | 391,718.984 | 214,038.2 | +120.46% |
| 2017 | 2017-12-31 | 177,680.784 | −76,042.387 | −29.97% |
| 2016 | 2016-12-31 | 253,723.171 | 107,854.054 | +73.94% |
| 2015 | 2015-12-31 | 145,869.117 | −1.5M | −91.14% |
| 2014 | 2014-12-31 | 1.6M | 401,311.508 | +32.25% |
| 2013 | 2013-12-31 | 1.2M | 378,882.789 | +43.77% |
| 2012 | 2012-12-31 | 865,597.589 | 111,387.5 | +14.77% |
| 2011 | 2011-12-31 | 754,210.089 | — | — |
Atossa Therapeutics quarterly shares outstanding
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| Fiscal quarter | Period ended | Shares outstanding | Change | YoY change |
|---|---|---|---|---|
| Q2 2026 | 2026-06-30 | 10.0M | 1.3M | +15.31% |
| Q1 2026 | 2026-03-31 | 8.6M | −43,029.268 | −0.50% |
| Q4 2025 | 2025-12-31 | 8.6M | −43,029.268 | −0.50% |
| Q3 2025 | 2025-09-30 | 8.7M | 259,113.12 | +3.09% |
| Q2 2025 | 2025-06-30 | 8.7M | 259,113.12 | +3.09% |
| Q1 2025 | 2025-03-31 | 8.7M | 245,366.73 | +2.92% |
| Q4 2024 | 2024-12-31 | 8.7M | 259,017.98 | +3.09% |
| Q3 2024 | 2024-09-30 | 8.4M | 4.288 | +0.00% |
| Q2 2024 | 2024-06-30 | 8.4M | −80,462.712 | −0.95% |
| Q1 2024 | 2024-03-31 | 8.4M | −74,784.462 | −0.88% |
| Q4 2023 | 2023-12-31 | 8.4M | −88,435.712 | −1.04% |
| Q3 2023 | 2023-09-30 | 8.4M | −88,440 | −1.04% |
| Q2 2023 | 2023-06-30 | 8.5M | −7,973 | −0.09% |
| Q1 2023 | 2023-03-31 | 8.5M | 0 | 0.00% |
| Q4 2022 | 2022-12-31 | 8.5M | 0 | 0.00% |
| Q3 2022 | 2022-09-30 | 8.5M | 30.753 | +0.00% |
| Q2 2022 | 2022-06-30 | 8.5M | 46,826.568 | +0.56% |
| Q1 2022 | 2022-03-31 | 8.5M | 388,575.344 | +4.80% |
| Q4 2021 | 2021-12-31 | 8.5M | 5.3M | +166.30% |
| Q3 2021 | 2021-09-30 | 8.5M | 7.8M | +1110.06% |
| Q2 2021 | 2021-06-30 | 8.4M | 7.8M | +1253.47% |
| Q1 2021 | 2021-03-31 | 8.1M | 7.5M | +1223.23% |
| Q4 2020 | 2020-12-31 | 3.2M | 2.6M | +420.74% |
| Q3 2020 | 2020-09-30 | 701,104.75 | 89,328.822 | +14.60% |
| Q2 2020 | 2020-06-30 | 623,359.826 | 11,679.105 | +1.91% |
| Q1 2020 | 2020-03-31 | 611,775.928 | 590.471 | +0.10% |
| Q4 2019 | 2019-12-31 | 611,775.928 | 220,056.944 | +56.18% |
| Q3 2019 | 2019-09-30 | 611,775.928 | 241,717.843 | +65.32% |
| Q2 2019 | 2019-06-30 | 611,680.721 | 285,116.088 | +87.31% |
| Q1 2019 | 2019-03-31 | 611,185.457 | 433,504.673 | +243.98% |
| Q4 2018 | 2018-12-31 | 391,718.984 | 214,038.2 | +120.46% |
| Q3 2018 | 2018-09-30 | 370,058.085 | −569,465.562 | −60.61% |
| Q2 2018 | 2018-06-30 | 326,564.633 | −345,606.837 | −51.42% |
| Q1 2018 | 2018-03-31 | 177,680.784 | −76,042.387 | −29.97% |
| Q4 2017 | 2017-12-31 | 177,680.784 | −76,042.387 | −29.97% |
| Q3 2017 | 2017-09-30 | 939,523.647 | 685,729.858 | +270.19% |
| Q2 2017 | 2017-06-30 | 672,171.47 | −2.0M | −74.65% |
| Q1 2017 | 2017-03-31 | 253,723.171 | −2.3M | −90.25% |
| Q4 2016 | 2016-12-31 | 253,723.171 | −1.9M | −88.40% |
| Q3 2016 | 2016-09-30 | 253,793.789 | −1.8M | −87.56% |
| Q2 2016 | 2016-06-30 | 2.7M | 705,057.75 | +36.23% |
| Q1 2016 | 2016-03-31 | 2.6M | 777,615.869 | +42.64% |
| Q4 2015 | 2015-12-31 | 2.2M | 542,244.333 | +32.95% |
| Q3 2015 | 2015-09-30 | 2.0M | 394,107.534 | +23.95% |
| Q2 2015 | 2015-06-30 | 1.9M | 308,347.534 | +18.83% |
| Q1 2015 | 2015-03-31 | 1.8M | 186,842.163 | +11.42% |
| Q4 2014 | 2014-12-31 | 1.6M | 401,311.508 | +32.25% |
| Q3 2014 | 2014-09-30 | 1.6M | 476,988.678 | +40.81% |
| Q2 2014 | 2014-06-30 | 1.6M | 610,100.928 | +59.37% |
| Q1 2014 | 2014-03-31 | 1.6M | 664,676.783 | +68.38% |
| Q4 2013 | 2013-12-31 | 1.2M | 490,270.289 | +65.00% |
| Q3 2013 | 2013-09-30 | 1.2M | 356,805.619 | +43.94% |
| Q2 2013 | 2013-06-30 | 1.0M | 273,440.869 | +36.26% |
| Q1 2013 | 2013-03-31 | 972,037.273 | — | — |
| Q4 2012 | 2012-12-31 | 754,210.089 | — | — |
| Q3 2012 | 2012-09-30 | 811,997.589 | — | — |
| Q4 2011 | 2011-12-31 | 754,210.089 | — | — |
Atossa Therapeutics shares outstanding trends
Over the last five reported fiscal years, Atossa Therapeutics's shares outstanding moved from 3.2M to 576,961.187, a change of −2.6M. The latest reported quarter, Q2 2026, shows 10.0M.
About the metric
What shares outstanding means
Shares outstanding is the number of common shares held by investors at a reporting-period end. The count can change because of stock issuance, repurchases, conversions, acquisitions, or stock splits.
Calculation and source
SEC-reported period-end shares
TickerStat displays period-end common shares from SEC filings and adjusts older values to the current share basis when SEC-reported stock-split conversion ratios are available. Values remain as reported when no split ratio is available. Fiscal periods can differ from calendar years, so exact period-end dates are included.
Review Atossa Therapeutics filings at SEC.gov ↗