Altimmune, Inc. (ALT)
NASDAQ: ALT · Real-Time Price · USD
2.820
-0.050 (-1.74%)
At close: Jun 26, 2026, 4:00 PM EDT
2.800
-0.020 (-0.71%)
After-hours: Jun 26, 2026, 7:57 PM EDT
Altimmune Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Jun 26, 2026 | 2.85 | 2.90 | 2.74 | 2.82 | 2.82 | -1.74% | 16,813,182 |
| Jun 25, 2026 | 2.96 | 3.00 | 2.86 | 2.87 | 2.87 | -2.71% | 2,780,011 |
| Jun 24, 2026 | 2.92 | 3.04 | 2.92 | 2.95 | 2.95 | 1.37% | 3,457,395 |
| Jun 23, 2026 | 2.88 | 3.04 | 2.88 | 2.91 | 2.91 | -0.68% | 4,213,406 |
| Jun 22, 2026 | 2.84 | 3.05 | 2.83 | 2.93 | 2.93 | 8.52% | 5,759,810 |
| Jun 18, 2026 | 2.68 | 2.77 | 2.68 | 2.70 | 2.70 | 2.27% | 11,678,785 |
| Jun 17, 2026 | 2.65 | 2.71 | 2.62 | 2.64 | 2.64 | 0.76% | 3,568,896 |
| Jun 16, 2026 | 2.64 | 2.68 | 2.60 | 2.62 | 2.62 | -0.76% | 2,902,009 |
| Jun 15, 2026 | 2.62 | 2.68 | 2.58 | 2.64 | 2.64 | 1.15% | 3,503,824 |
| Jun 12, 2026 | 2.61 | 2.66 | 2.58 | 2.61 | 2.61 | 0.77% | 2,137,415 |
| Jun 11, 2026 | 2.62 | 2.65 | 2.57 | 2.59 | 2.59 | -0.77% | 3,407,719 |
| Jun 10, 2026 | 2.62 | 2.71 | 2.61 | 2.61 | 2.61 | -1.88% | 3,021,647 |
| Jun 9, 2026 | 2.77 | 2.80 | 2.62 | 2.66 | 2.66 | -2.56% | 3,338,764 |
| Jun 8, 2026 | 2.75 | 2.78 | 2.68 | 2.73 | 2.73 | 0.74% | 2,168,737 |
| Jun 5, 2026 | 2.92 | 2.92 | 2.69 | 2.71 | 2.71 | -7.19% | 3,116,325 |
| Jun 4, 2026 | 2.84 | 3.00 | 2.84 | 2.92 | 2.92 | 1.74% | 2,812,029 |
| Jun 3, 2026 | 2.93 | 2.95 | 2.84 | 2.87 | 2.87 | -1.03% | 3,029,382 |
| Jun 2, 2026 | 2.99 | 3.00 | 2.90 | 2.90 | 2.90 | -3.65% | 3,092,642 |
| Jun 1, 2026 | 3.02 | 3.05 | 2.93 | 3.01 | 3.01 | -1.31% | 2,264,173 |
| May 29, 2026 | 3.07 | 3.10 | 3.02 | 3.05 | 3.05 | -0.65% | 2,591,292 |
| May 28, 2026 | 2.98 | 3.13 | 2.98 | 3.07 | 3.07 | 3.02% | 3,909,012 |
| May 27, 2026 | 2.99 | 3.03 | 2.96 | 2.98 | 2.98 | 1.71% | 2,585,369 |
| May 26, 2026 | 2.90 | 3.00 | 2.89 | 2.93 | 2.93 | 1.03% | 2,134,812 |
| May 22, 2026 | 2.94 | 3.00 | 2.88 | 2.90 | 2.90 | -1.02% | 1,988,044 |
| May 21, 2026 | 2.80 | 2.93 | 2.77 | 2.93 | 2.93 | 3.90% | 3,035,757 |
| May 20, 2026 | 2.75 | 2.85 | 2.73 | 2.82 | 2.82 | 2.92% | 2,223,640 |
| May 19, 2026 | 2.80 | 2.84 | 2.73 | 2.74 | 2.74 | -2.14% | 2,509,237 |
| May 18, 2026 | 2.85 | 2.89 | 2.72 | 2.80 | 2.80 | -1.75% | 3,413,098 |
| May 15, 2026 | 2.90 | 2.94 | 2.81 | 2.85 | 2.85 | -2.40% | 2,286,910 |
| May 14, 2026 | 3.01 | 3.03 | 2.90 | 2.92 | 2.92 | -3.31% | 2,388,445 |
| May 13, 2026 | 2.98 | 3.04 | 2.89 | 3.02 | 3.02 | -1.95% | 3,584,637 |
| May 12, 2026 | 3.08 | 3.11 | 3.01 | 3.08 | 3.08 | -0.32% | 2,436,619 |
| May 11, 2026 | 3.09 | 3.22 | 3.06 | 3.09 | 3.09 | - | 2,937,164 |
| May 8, 2026 | 3.07 | 3.11 | 3.01 | 3.09 | 3.09 | 1.64% | 2,858,248 |
| May 7, 2026 | 3.22 | 3.24 | 3.00 | 3.04 | 3.04 | -6.75% | 3,720,531 |
| May 6, 2026 | 3.06 | 3.26 | 3.04 | 3.26 | 3.26 | 6.54% | 4,096,720 |
| May 5, 2026 | 3.08 | 3.15 | 3.00 | 3.06 | 3.06 | 1.32% | 3,470,414 |
| May 4, 2026 | 2.84 | 3.04 | 2.84 | 3.02 | 3.02 | 7.09% | 5,175,677 |
| May 1, 2026 | 2.59 | 2.82 | 2.56 | 2.82 | 2.82 | 8.46% | 4,956,786 |
| Apr 30, 2026 | 2.66 | 2.68 | 2.58 | 2.60 | 2.60 | -1.14% | 5,675,474 |
| Apr 29, 2026 | 2.71 | 2.73 | 2.60 | 2.63 | 2.63 | -4.01% | 4,888,585 |
| Apr 28, 2026 | 2.78 | 2.85 | 2.72 | 2.74 | 2.74 | -2.14% | 4,870,640 |
| Apr 27, 2026 | 2.86 | 2.91 | 2.75 | 2.80 | 2.80 | -1.75% | 5,894,919 |
| Apr 24, 2026 | 2.95 | 3.01 | 2.82 | 2.85 | 2.85 | -1.38% | 14,733,746 |
| Apr 23, 2026 | 3.08 | 3.16 | 2.80 | 2.89 | 2.89 | -16.71% | 30,489,038 |
| Apr 22, 2026 | 3.45 | 3.51 | 3.42 | 3.47 | 3.47 | 1.76% | 2,948,086 |
| Apr 21, 2026 | 3.56 | 3.64 | 3.39 | 3.41 | 3.41 | -4.21% | 3,251,026 |
| Apr 20, 2026 | 3.45 | 3.58 | 3.39 | 3.56 | 3.56 | 1.71% | 2,161,883 |
| Apr 17, 2026 | 3.55 | 3.60 | 3.42 | 3.50 | 3.50 | -0.28% | 2,868,797 |
| Apr 16, 2026 | 3.40 | 3.55 | 3.35 | 3.51 | 3.51 | 3.24% | 2,580,475 |
| Apr 15, 2026 | 3.33 | 3.42 | 3.29 | 3.40 | 3.40 | 3.34% | 2,080,063 |
| Apr 14, 2026 | 3.25 | 3.32 | 3.23 | 3.29 | 3.29 | 1.86% | 1,990,993 |
| Apr 13, 2026 | 3.23 | 3.28 | 3.18 | 3.23 | 3.23 | -0.31% | 2,122,551 |
| Apr 10, 2026 | 3.39 | 3.41 | 3.22 | 3.24 | 3.24 | -4.14% | 1,936,610 |
| Apr 9, 2026 | 3.35 | 3.44 | 3.31 | 3.38 | 3.38 | 0.30% | 1,989,237 |
| Apr 8, 2026 | 3.48 | 3.54 | 3.36 | 3.37 | 3.37 | -0.30% | 1,695,749 |
| Apr 7, 2026 | 3.34 | 3.45 | 3.26 | 3.38 | 3.38 | 1.50% | 2,039,568 |
| Apr 6, 2026 | 3.34 | 3.48 | 3.30 | 3.33 | 3.33 | -0.30% | 2,360,635 |
| Apr 2, 2026 | 3.10 | 3.35 | 3.07 | 3.34 | 3.34 | 7.05% | 2,737,035 |
| Apr 1, 2026 | 3.14 | 3.23 | 3.10 | 3.12 | 3.12 | 1.30% | 2,111,656 |
| Mar 31, 2026 | 2.98 | 3.12 | 2.95 | 3.08 | 3.08 | 6.94% | 3,290,532 |
| Mar 30, 2026 | 3.03 | 3.03 | 2.87 | 2.88 | 2.88 | -4.64% | 3,116,331 |
| Mar 27, 2026 | 3.16 | 3.19 | 3.02 | 3.02 | 3.02 | -5.63% | 2,674,890 |
| Mar 26, 2026 | 3.26 | 3.33 | 3.19 | 3.20 | 3.20 | -3.32% | 2,194,819 |
| Mar 25, 2026 | 3.30 | 3.39 | 3.24 | 3.31 | 3.31 | 2.16% | 4,369,468 |
| Mar 24, 2026 | 3.37 | 3.41 | 3.23 | 3.24 | 3.24 | -5.81% | 3,345,417 |
| Mar 23, 2026 | 3.40 | 3.53 | 3.31 | 3.44 | 3.44 | 2.99% | 3,449,313 |
| Mar 20, 2026 | 3.43 | 3.52 | 3.31 | 3.34 | 3.34 | -2.34% | 12,523,672 |
| Mar 19, 2026 | 3.38 | 3.51 | 3.34 | 3.42 | 3.42 | - | 2,686,763 |
| Mar 18, 2026 | 3.50 | 3.52 | 3.36 | 3.42 | 3.42 | -3.12% | 3,477,122 |
| Mar 17, 2026 | 3.63 | 3.71 | 3.52 | 3.53 | 3.53 | -2.49% | 2,531,622 |
| Mar 16, 2026 | 3.60 | 3.68 | 3.54 | 3.62 | 3.62 | 3.43% | 2,650,194 |
| Mar 13, 2026 | 3.62 | 3.68 | 3.47 | 3.50 | 3.50 | -2.78% | 3,119,120 |
| Mar 12, 2026 | 3.77 | 3.77 | 3.58 | 3.60 | 3.60 | -5.26% | 2,959,387 |
| Mar 11, 2026 | 3.89 | 3.91 | 3.74 | 3.80 | 3.80 | -1.55% | 2,890,344 |
| Mar 10, 2026 | 3.90 | 4.04 | 3.83 | 3.86 | 3.86 | -0.52% | 3,565,682 |
| Mar 9, 2026 | 3.64 | 3.89 | 3.61 | 3.88 | 3.88 | 9.60% | 5,337,005 |
| Mar 6, 2026 | 3.54 | 3.75 | 3.42 | 3.54 | 3.54 | 1.00% | 5,385,353 |
| Mar 5, 2026 | 4.10 | 4.20 | 3.50 | 3.51 | 3.51 | -17.92% | 7,709,994 |
| Mar 4, 2026 | 4.19 | 4.35 | 4.13 | 4.27 | 4.27 | 2.64% | 2,267,348 |
| Mar 3, 2026 | 4.05 | 4.26 | 4.04 | 4.16 | 4.16 | - | 2,863,833 |
| Mar 2, 2026 | 4.24 | 4.27 | 4.15 | 4.16 | 4.16 | -3.48% | 2,388,473 |
| Feb 27, 2026 | 4.40 | 4.47 | 4.29 | 4.31 | 4.31 | -3.36% | 3,018,485 |
| Feb 26, 2026 | 4.56 | 4.59 | 4.38 | 4.46 | 4.46 | -2.19% | 1,902,855 |
| Feb 25, 2026 | 4.59 | 4.61 | 4.49 | 4.56 | 4.56 | -0.22% | 2,056,523 |
| Feb 24, 2026 | 4.52 | 4.83 | 4.52 | 4.57 | 4.57 | 1.11% | 2,978,948 |
| Feb 23, 2026 | 4.34 | 4.64 | 4.34 | 4.52 | 4.52 | 3.20% | 3,179,227 |
| Feb 20, 2026 | 4.49 | 4.51 | 4.36 | 4.38 | 4.38 | -2.45% | 4,136,634 |
| Feb 19, 2026 | 4.47 | 4.53 | 4.27 | 4.49 | 4.49 | 0.67% | 3,275,381 |
| Feb 18, 2026 | 4.50 | 4.55 | 4.42 | 4.46 | 4.46 | -0.89% | 2,829,078 |
| Feb 17, 2026 | 4.54 | 4.64 | 4.48 | 4.50 | 4.50 | -0.66% | 1,885,381 |
| Feb 13, 2026 | 4.62 | 4.75 | 4.53 | 4.53 | 4.53 | -0.88% | 3,887,968 |
| Feb 12, 2026 | 4.65 | 4.70 | 4.47 | 4.57 | 4.57 | -1.30% | 2,236,562 |
| Feb 11, 2026 | 4.72 | 4.75 | 4.54 | 4.63 | 4.63 | -0.43% | 1,866,963 |
| Feb 10, 2026 | 4.70 | 4.83 | 4.62 | 4.65 | 4.65 | -0.85% | 2,140,747 |
| Feb 9, 2026 | 4.85 | 4.96 | 4.65 | 4.69 | 4.69 | -3.70% | 3,722,751 |
| Feb 6, 2026 | 5.00 | 5.09 | 4.84 | 4.87 | 4.87 | -1.02% | 3,846,002 |
| Feb 5, 2026 | 5.09 | 5.28 | 4.88 | 4.92 | 4.92 | -4.09% | 3,972,566 |
| Feb 4, 2026 | 5.47 | 5.53 | 5.09 | 5.13 | 5.13 | -6.22% | 3,557,492 |
| Feb 3, 2026 | 5.55 | 5.64 | 5.21 | 5.47 | 5.47 | -1.44% | 4,565,876 |