Altimmune, Inc. (ALT)
NASDAQ: ALT · Real-Time Price · USD
2.890
-0.580 (-16.71%)
At close: Apr 23, 2026, 4:00 PM EDT
2.950
+0.060 (2.08%)
Pre-market: Apr 24, 2026, 6:53 AM EDT
Altimmune Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Apr 23, 2026 | 3.08 | 3.16 | 2.80 | 2.89 | 2.89 | -16.71% | 30,459,880 |
| Apr 22, 2026 | 3.45 | 3.51 | 3.42 | 3.47 | 3.47 | 1.76% | 1,953,864 |
| Apr 21, 2026 | 3.56 | 3.64 | 3.39 | 3.41 | 3.41 | -4.21% | 3,241,438 |
| Apr 20, 2026 | 3.45 | 3.58 | 3.39 | 3.56 | 3.56 | 1.71% | 2,155,092 |
| Apr 17, 2026 | 3.55 | 3.60 | 3.42 | 3.50 | 3.50 | -0.28% | 2,854,212 |
| Apr 16, 2026 | 3.40 | 3.55 | 3.35 | 3.51 | 3.51 | 3.24% | 2,570,346 |
| Apr 15, 2026 | 3.33 | 3.42 | 3.29 | 3.40 | 3.40 | 3.34% | 2,053,560 |
| Apr 14, 2026 | 3.25 | 3.32 | 3.23 | 3.29 | 3.29 | 1.86% | 1,977,784 |
| Apr 13, 2026 | 3.23 | 3.28 | 3.18 | 3.23 | 3.23 | -0.31% | 2,094,031 |
| Apr 10, 2026 | 3.39 | 3.41 | 3.22 | 3.24 | 3.24 | -4.14% | 1,917,327 |
| Apr 9, 2026 | 3.35 | 3.44 | 3.31 | 3.38 | 3.38 | 0.30% | 1,981,502 |
| Apr 8, 2026 | 3.48 | 3.54 | 3.36 | 3.37 | 3.37 | -0.30% | 1,690,950 |
| Apr 7, 2026 | 3.34 | 3.45 | 3.26 | 3.38 | 3.38 | 1.50% | 2,027,181 |
| Apr 6, 2026 | 3.34 | 3.48 | 3.30 | 3.33 | 3.33 | -0.30% | 2,324,654 |
| Apr 2, 2026 | 3.10 | 3.35 | 3.07 | 3.34 | 3.34 | 7.05% | 2,726,149 |
| Apr 1, 2026 | 3.14 | 3.23 | 3.10 | 3.12 | 3.12 | 1.30% | 2,067,935 |
| Mar 31, 2026 | 2.98 | 3.12 | 2.95 | 3.08 | 3.08 | 6.94% | 3,277,050 |
| 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 |