Atossa Therapeutics, Inc. (ATOS)
NASDAQ: ATOS · Real-Time Price · USD
5.49
+0.04 (0.73%)
At close: Apr 28, 2026, 4:00 PM EDT
5.49
0.00 (0.00%)
After-hours: Apr 28, 2026, 4:00 PM EDT
Atossa Therapeutics Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Apr 28, 2026 | 5.49 | 5.74 | 5.32 | 5.52 | - | 1.28% | 28,676 |
| Apr 27, 2026 | 5.68 | 5.78 | 5.32 | 5.45 | 5.45 | -4.39% | 36,629 |
| Apr 24, 2026 | 5.73 | 5.80 | 5.54 | 5.70 | 5.70 | -0.52% | 42,373 |
| Apr 23, 2026 | 5.93 | 5.93 | 5.61 | 5.73 | 5.73 | -3.70% | 36,371 |
| Apr 22, 2026 | 5.87 | 6.02 | 5.75 | 5.95 | 5.95 | 3.12% | 40,176 |
| Apr 21, 2026 | 6.20 | 6.20 | 5.76 | 5.77 | 5.77 | -6.48% | 90,416 |
| Apr 20, 2026 | 5.83 | 6.28 | 5.80 | 6.17 | 6.17 | 5.83% | 127,690 |
| Apr 17, 2026 | 5.81 | 5.94 | 5.67 | 5.83 | 5.83 | 1.04% | 54,649 |
| Apr 16, 2026 | 5.64 | 5.78 | 5.52 | 5.77 | 5.77 | 0.52% | 33,856 |
| Apr 15, 2026 | 5.37 | 5.76 | 5.35 | 5.74 | 5.74 | 7.29% | 100,046 |
| Apr 14, 2026 | 5.30 | 5.44 | 5.23 | 5.35 | 5.35 | 0.75% | 35,035 |
| Apr 13, 2026 | 4.92 | 5.36 | 4.92 | 5.31 | 5.31 | 7.49% | 71,277 |
| Apr 10, 2026 | 4.99 | 4.99 | 4.81 | 4.94 | 4.94 | -0.80% | 30,083 |
| Apr 9, 2026 | 4.84 | 5.05 | 4.73 | 4.98 | 4.98 | 3.32% | 42,843 |
| Apr 8, 2026 | 5.08 | 5.14 | 4.73 | 4.82 | 4.82 | -1.23% | 76,859 |
| Apr 7, 2026 | 5.15 | 5.15 | 4.70 | 4.88 | 4.88 | -5.24% | 81,433 |
| Apr 6, 2026 | 5.41 | 5.41 | 5.10 | 5.15 | 5.15 | -4.01% | 54,706 |
| Apr 2, 2026 | 5.01 | 5.56 | 5.00 | 5.37 | 5.37 | 4.99% | 70,988 |
| Apr 1, 2026 | 5.27 | 5.36 | 5.03 | 5.11 | 5.11 | -2.85% | 63,322 |
| Mar 31, 2026 | 4.77 | 5.26 | 4.77 | 5.26 | 5.26 | 11.68% | 42,650 |
| Mar 30, 2026 | 4.79 | 4.87 | 4.59 | 4.71 | 4.71 | -0.21% | 28,551 |
| Mar 27, 2026 | 4.60 | 4.93 | 4.60 | 4.72 | 4.72 | 0.21% | 64,076 |
| Mar 26, 2026 | 5.19 | 5.47 | 4.64 | 4.71 | 4.71 | -13.10% | 123,309 |
| Mar 25, 2026 | 5.57 | 6.09 | 5.40 | 5.42 | 5.42 | -1.63% | 129,265 |
| Mar 24, 2026 | 5.61 | 5.69 | 5.39 | 5.51 | 5.51 | -1.78% | 41,080 |
| Mar 23, 2026 | 5.37 | 5.71 | 5.35 | 5.61 | 5.61 | 5.25% | 65,586 |
| Mar 20, 2026 | 5.17 | 5.98 | 5.12 | 5.33 | 5.33 | 3.90% | 159,461 |
| Mar 19, 2026 | 5.11 | 5.35 | 4.97 | 5.13 | 5.13 | 0.39% | 65,855 |
| Mar 18, 2026 | 5.50 | 5.53 | 5.10 | 5.11 | 5.11 | -6.92% | 47,150 |
| Mar 17, 2026 | 4.98 | 5.57 | 4.98 | 5.49 | 5.49 | 10.46% | 64,237 |
| Mar 16, 2026 | 5.06 | 5.18 | 4.90 | 4.97 | 4.97 | -0.80% | 38,868 |
| 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% | 146,417 |
| Mar 11, 2026 | 4.73 | 4.85 | 4.61 | 4.78 | 4.78 | - | 42,675 |
| Mar 10, 2026 | 4.58 | 4.87 | 4.56 | 4.78 | 4.78 | 4.60% | 124,670 |
| Mar 9, 2026 | 4.53 | 4.60 | 4.36 | 4.57 | 4.57 | 0.88% | 129,133 |
| Mar 6, 2026 | 4.56 | 4.67 | 4.44 | 4.53 | 4.53 | -3.21% | 46,143 |
| Mar 5, 2026 | 4.92 | 5.01 | 4.52 | 4.68 | 4.68 | -4.88% | 70,708 |
| Mar 4, 2026 | 4.79 | 5.12 | 4.71 | 4.92 | 4.92 | 4.24% | 136,363 |
| Mar 3, 2026 | 4.54 | 4.91 | 4.31 | 4.72 | 4.72 | 4.89% | 102,344 |
| Mar 2, 2026 | 4.35 | 4.55 | 4.23 | 4.50 | 4.50 | 1.58% | 88,045 |
| Feb 27, 2026 | 4.43 | 4.59 | 4.35 | 4.43 | 4.43 | -0.89% | 69,251 |
| Feb 26, 2026 | 4.36 | 4.60 | 4.30 | 4.47 | 4.47 | 4.68% | 89,563 |
| Feb 25, 2026 | 4.23 | 4.44 | 4.15 | 4.27 | 4.27 | 1.43% | 77,472 |
| Feb 24, 2026 | 4.01 | 4.27 | 4.00 | 4.21 | 4.21 | 6.31% | 96,160 |
| Feb 23, 2026 | 4.11 | 4.15 | 3.84 | 3.96 | 3.96 | -5.94% | 105,399 |
| Feb 20, 2026 | 4.38 | 4.48 | 4.15 | 4.21 | 4.21 | -4.75% | 42,940 |
| Feb 19, 2026 | 4.35 | 4.55 | 4.20 | 4.42 | 4.42 | 1.84% | 68,262 |
| Feb 18, 2026 | 4.06 | 4.59 | 4.06 | 4.34 | 4.34 | 4.58% | 85,595 |
| Feb 17, 2026 | 4.14 | 4.20 | 3.97 | 4.15 | 4.15 | -1.19% | 92,561 |
| Feb 13, 2026 | 3.92 | 4.44 | 3.91 | 4.20 | 4.20 | 6.60% | 94,093 |
| Feb 12, 2026 | 4.05 | 4.15 | 3.76 | 3.94 | 3.94 | -2.72% | 243,055 |
| Feb 11, 2026 | 4.76 | 4.77 | 4.03 | 4.05 | 4.05 | -15.98% | 347,560 |
| Feb 10, 2026 | 4.91 | 5.05 | 4.80 | 4.82 | 4.82 | -3.41% | 190,284 |
| Feb 9, 2026 | 5.32 | 5.33 | 4.78 | 4.99 | 4.99 | -6.55% | 324,787 |
| Feb 6, 2026 | 5.33 | 5.54 | 5.21 | 5.34 | 5.34 | 0.19% | 154,637 |
| Feb 5, 2026 | 5.03 | 5.47 | 5.01 | 5.33 | 5.33 | 0.76% | 183,625 |
| Feb 4, 2026 | 5.41 | 5.51 | 4.92 | 5.29 | 5.29 | -4.34% | 282,407 |
| Feb 3, 2026 | 5.60 | 5.85 | 4.91 | 5.53 | 5.53 | -1.07% | 639,101 |
| Feb 2, 2026 | 7.23 | 7.56 | 5.40 | 5.59 | 5.59 | -34.04% | 665,615 |
| Jan 30, 2026 | 8.94 | 8.99 | 7.98 | 8.48 | 8.47 | -5.83% | 189,392 |
| Jan 29, 2026 | 9.26 | 9.26 | 8.55 | 9.00 | 9.00 | -2.66% | 118,356 |
| Jan 28, 2026 | 10.10 | 10.37 | 9.15 | 9.25 | 9.25 | -9.99% | 141,435 |
| Jan 27, 2026 | 10.50 | 10.95 | 9.92 | 10.27 | 10.27 | -0.07% | 124,891 |
| Jan 26, 2026 | 9.50 | 10.65 | 9.04 | 10.28 | 10.28 | 6.73% | 211,374 |
| Jan 23, 2026 | 9.90 | 9.90 | 9.45 | 9.63 | 9.63 | -1.91% | 50,141 |
| Jan 22, 2026 | 9.30 | 9.83 | 8.88 | 9.82 | 9.82 | 8.51% | 77,698 |
| Jan 21, 2026 | 9.00 | 9.30 | 8.78 | 9.05 | 9.05 | 0.04% | 60,963 |
| Jan 20, 2026 | 9.91 | 9.92 | 8.70 | 9.05 | 9.04 | -1.95% | 262,989 |
| Jan 16, 2026 | 9.16 | 9.54 | 8.85 | 9.23 | 9.22 | 6.02% | 776,060 |
| Jan 15, 2026 | 9.15 | 9.15 | 8.56 | 8.70 | 8.70 | -3.64% | 107,020 |
| Jan 14, 2026 | 9.42 | 9.52 | 9.00 | 9.03 | 9.03 | -5.30% | 109,599 |
| Jan 13, 2026 | 9.90 | 10.01 | 9.52 | 9.54 | 9.54 | -2.78% | 35,906 |
| Jan 12, 2026 | 9.64 | 9.86 | 9.24 | 9.81 | 9.81 | 1.36% | 48,445 |
| Jan 9, 2026 | 9.90 | 10.04 | 9.45 | 9.68 | 9.68 | -1.21% | 59,552 |
| Jan 8, 2026 | 10.05 | 10.15 | 9.53 | 9.80 | 9.79 | -1.81% | 60,259 |
| Jan 7, 2026 | 10.05 | 10.50 | 9.85 | 9.98 | 9.98 | 0.71% | 44,540 |
| Jan 6, 2026 | 9.15 | 10.23 | 9.12 | 9.91 | 9.91 | 7.00% | 157,128 |
| Jan 5, 2026 | 9.75 | 9.75 | 9.00 | 9.26 | 9.26 | -2.12% | 78,020 |
| Jan 2, 2026 | 8.89 | 9.51 | 8.89 | 9.46 | 9.46 | 6.88% | 103,153 |
| Dec 31, 2025 | 9.00 | 9.15 | 8.27 | 8.85 | 8.85 | -5.06% | 247,868 |
| Dec 30, 2025 | 9.77 | 9.82 | 9.23 | 9.32 | 9.32 | -5.64% | 110,973 |
| Dec 29, 2025 | 9.66 | 10.35 | 9.66 | 9.88 | 9.88 | -0.04% | 70,717 |
| Dec 26, 2025 | 10.20 | 10.35 | 9.72 | 9.88 | 9.88 | -3.99% | 65,168 |
| Dec 24, 2025 | 10.20 | 10.45 | 9.98 | 10.29 | 10.29 | 0.32% | 45,707 |
| Dec 23, 2025 | 10.55 | 10.69 | 9.99 | 10.26 | 10.26 | -4.62% | 152,537 |
| Dec 22, 2025 | 10.98 | 11.19 | 10.67 | 10.76 | 10.76 | -1.90% | 42,895 |
| Dec 19, 2025 | 10.65 | 11.10 | 10.52 | 10.97 | 10.97 | 3.82% | 63,053 |
| Dec 18, 2025 | 10.63 | 11.10 | 10.50 | 10.56 | 10.56 | -1.38% | 41,933 |
| Dec 17, 2025 | 11.10 | 11.24 | 10.68 | 10.71 | 10.71 | -1.46% | 32,133 |
| Dec 16, 2025 | 10.50 | 11.07 | 10.50 | 10.87 | 10.87 | 1.40% | 39,636 |
| Dec 15, 2025 | 11.10 | 11.58 | 10.50 | 10.72 | 10.72 | -13.37% | 193,386 |
| Dec 12, 2025 | 13.23 | 13.71 | 12.30 | 12.38 | 12.37 | -8.82% | 97,135 |
| Dec 11, 2025 | 14.40 | 14.85 | 13.42 | 13.57 | 13.57 | 6.45% | 388,289 |
| Dec 10, 2025 | 12.30 | 13.05 | 12.05 | 12.75 | 12.75 | 5.11% | 68,381 |
| Dec 9, 2025 | 11.72 | 12.30 | 11.72 | 12.13 | 12.13 | 3.46% | 38,707 |
| Dec 8, 2025 | 12.30 | 12.30 | 11.55 | 11.72 | 11.72 | -2.21% | 30,700 |
| Dec 5, 2025 | 11.70 | 12.13 | 11.51 | 11.99 | 11.99 | 5.24% | 56,285 |
| Dec 4, 2025 | 11.14 | 11.61 | 11.01 | 11.39 | 11.39 | 2.84% | 47,211 |
| Dec 3, 2025 | 10.64 | 11.15 | 10.43 | 11.08 | 11.08 | 5.49% | 41,475 |