Atossa Therapeutics, Inc. (ATOS)
NASDAQ: ATOS · Real-Time Price · USD
4.850
-0.300 (-5.83%)
At close: May 15, 2026, 4:00 PM EDT
4.900
+0.050 (1.03%)
After-hours: May 15, 2026, 7:00 PM EDT
Atossa Therapeutics Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| May 15, 2026 | 5.11 | 5.11 | 4.85 | 4.85 | 4.85 | -5.83% | 46,175 |
| May 14, 2026 | 5.16 | 5.16 | 4.96 | 5.15 | 5.15 | -0.19% | 29,915 |
| May 13, 2026 | 5.23 | 5.31 | 5.15 | 5.16 | 5.16 | - | 31,995 |
| May 12, 2026 | 5.43 | 5.43 | 5.08 | 5.16 | 5.16 | -6.18% | 60,136 |
| May 11, 2026 | 5.58 | 5.71 | 5.45 | 5.50 | 5.50 | -1.79% | 37,720 |
| May 8, 2026 | 5.42 | 5.65 | 5.42 | 5.60 | 5.60 | -1.23% | 31,401 |
| May 7, 2026 | 5.81 | 5.83 | 5.61 | 5.67 | 5.67 | -2.24% | 47,864 |
| May 6, 2026 | 5.53 | 5.89 | 5.49 | 5.80 | 5.80 | 3.94% | 60,166 |
| May 5, 2026 | 5.86 | 6.18 | 5.24 | 5.58 | 5.58 | -4.78% | 199,073 |
| May 4, 2026 | 5.33 | 5.97 | 5.33 | 5.86 | 5.86 | 9.94% | 98,641 |
| May 1, 2026 | 5.43 | 5.43 | 5.16 | 5.33 | 5.33 | -0.74% | 35,695 |
| Apr 30, 2026 | 5.28 | 5.46 | 5.19 | 5.37 | 5.37 | 1.70% | 24,715 |
| Apr 29, 2026 | 5.47 | 5.51 | 5.21 | 5.28 | 5.28 | -3.83% | 28,962 |
| Apr 28, 2026 | 5.49 | 5.74 | 5.32 | 5.49 | 5.49 | 0.73% | 29,616 |
| Apr 27, 2026 | 5.68 | 5.78 | 5.32 | 5.45 | 5.45 | -4.39% | 36,791 |
| Apr 24, 2026 | 5.73 | 5.80 | 5.54 | 5.70 | 5.70 | -0.52% | 42,677 |
| Apr 23, 2026 | 5.93 | 5.93 | 5.61 | 5.73 | 5.73 | -3.70% | 39,354 |
| Apr 22, 2026 | 5.87 | 6.02 | 5.75 | 5.95 | 5.95 | 3.12% | 40,243 |
| Apr 21, 2026 | 6.20 | 6.20 | 5.76 | 5.77 | 5.77 | -6.48% | 91,412 |
| Apr 20, 2026 | 5.83 | 6.28 | 5.80 | 6.17 | 6.17 | 5.83% | 127,941 |
| Apr 17, 2026 | 5.81 | 5.94 | 5.67 | 5.83 | 5.83 | 1.04% | 54,755 |
| Apr 16, 2026 | 5.64 | 5.78 | 5.52 | 5.77 | 5.77 | 0.52% | 34,062 |
| Apr 15, 2026 | 5.37 | 5.76 | 5.35 | 5.74 | 5.74 | 7.29% | 100,072 |
| Apr 14, 2026 | 5.30 | 5.44 | 5.23 | 5.35 | 5.35 | 0.75% | 35,516 |
| Apr 13, 2026 | 4.92 | 5.36 | 4.92 | 5.31 | 5.31 | 7.49% | 71,445 |
| Apr 10, 2026 | 4.99 | 4.99 | 4.81 | 4.94 | 4.94 | -0.80% | 30,144 |
| Apr 9, 2026 | 4.84 | 5.05 | 4.73 | 4.98 | 4.98 | 3.32% | 42,925 |
| Apr 8, 2026 | 5.08 | 5.14 | 4.73 | 4.82 | 4.82 | -1.23% | 76,981 |
| Apr 7, 2026 | 5.15 | 5.15 | 4.70 | 4.88 | 4.88 | -5.24% | 81,510 |
| Apr 6, 2026 | 5.41 | 5.41 | 5.10 | 5.15 | 5.15 | -4.01% | 54,707 |
| Apr 2, 2026 | 5.01 | 5.56 | 5.00 | 5.37 | 5.37 | 4.99% | 71,797 |
| Apr 1, 2026 | 5.27 | 5.36 | 5.03 | 5.11 | 5.11 | -2.85% | 63,323 |
| Mar 31, 2026 | 4.77 | 5.26 | 4.77 | 5.26 | 5.26 | 11.68% | 42,716 |
| Mar 30, 2026 | 4.79 | 4.87 | 4.59 | 4.71 | 4.71 | -0.21% | 39,160 |
| Mar 27, 2026 | 4.60 | 4.93 | 4.60 | 4.72 | 4.72 | 0.21% | 64,924 |
| Mar 26, 2026 | 5.19 | 5.47 | 4.64 | 4.71 | 4.71 | -13.10% | 124,096 |
| Mar 25, 2026 | 5.57 | 6.09 | 5.40 | 5.42 | 5.42 | -1.63% | 130,343 |
| Mar 24, 2026 | 5.61 | 5.69 | 5.39 | 5.51 | 5.51 | -1.78% | 41,253 |
| Mar 23, 2026 | 5.37 | 5.71 | 5.35 | 5.61 | 5.61 | 5.25% | 65,601 |
| Mar 20, 2026 | 5.17 | 5.98 | 5.12 | 5.33 | 5.33 | 3.90% | 159,493 |
| Mar 19, 2026 | 5.11 | 5.35 | 4.97 | 5.13 | 5.13 | 0.39% | 65,957 |
| Mar 18, 2026 | 5.50 | 5.53 | 5.10 | 5.11 | 5.11 | -6.92% | 47,225 |
| Mar 17, 2026 | 4.98 | 5.57 | 4.98 | 5.49 | 5.49 | 10.46% | 64,526 |
| Mar 16, 2026 | 5.06 | 5.18 | 4.90 | 4.97 | 4.97 | -0.80% | 38,959 |
| Mar 13, 2026 | 5.08 | 5.23 | 4.95 | 5.01 | 5.01 | -0.79% | 105,749 |
| Mar 12, 2026 | 4.73 | 5.38 | 4.71 | 5.05 | 5.05 | 5.65% | 146,890 |
| Mar 11, 2026 | 4.73 | 4.85 | 4.61 | 4.78 | 4.78 | - | 42,775 |
| Mar 10, 2026 | 4.58 | 4.87 | 4.56 | 4.78 | 4.78 | 4.60% | 125,425 |
| Mar 9, 2026 | 4.53 | 4.60 | 4.36 | 4.57 | 4.57 | 0.88% | 129,981 |
| Mar 6, 2026 | 4.56 | 4.67 | 4.44 | 4.53 | 4.53 | -3.21% | 46,266 |