NASDAQ:ALT | Historical Stock Price | Altimmune, Inc.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2017-05-26 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$1.48$3.68$9.14$22.69$56.33$139.862017-05-262026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2023

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2023-12-29$11.25$11.259,190,200
2023-12-28$11.62$11.6215,064,500
2023-12-27$11.35$11.3515,546,400
2023-12-26$10.97$10.9715,405,900
2023-12-22$9.27$9.2715,023,900
2023-12-21$7.89$7.898,985,100
2023-12-20$7.98$7.989,826,800
2023-12-19$8.16$8.1613,208,300
2023-12-18$8.30$8.3015,044,400
2023-12-15$7.67$7.6714,736,000
2023-12-14$7.00$7.0011,979,000
2023-12-13$6.52$6.5214,436,200
2023-12-12$5.94$5.9415,147,000
2023-12-11$5.20$5.2022,073,600
2023-12-08$6.48$6.4828,143,000
2023-12-07$6.58$6.5857,736,900
2023-12-06$6.88$6.8855,059,700
2023-12-05$5.17$5.1719,482,000
2023-12-04$4.63$4.6352,958,600
2023-12-01$3.57$3.57101,190,400
2023-11-30$3.16$3.165,907,700
2023-11-29$3.13$3.131,646,400
2023-11-28$3.11$3.111,399,000
2023-11-27$3.06$3.062,680,600
2023-11-24$2.81$2.811,338,700
2023-11-22$2.56$2.56744,300
2023-11-21$2.54$2.54650,500
2023-11-20$2.63$2.631,282,000
2023-11-17$2.44$2.44633,000
2023-11-16$2.36$2.36779,600
2023-11-15$2.44$2.441,042,100
2023-11-14$2.41$2.412,078,700
2023-11-13$2.44$2.442,019,800
2023-11-10$2.50$2.50775,800
2023-11-09$2.45$2.451,242,400
2023-11-08$2.70$2.701,374,400
2023-11-07$2.70$2.701,635,500
2023-11-06$2.67$2.67997,900
2023-11-03$2.74$2.741,196,000
2023-11-02$2.56$2.561,028,100
2023-11-01$2.45$2.451,109,800
2023-10-31$2.41$2.41923,900
2023-10-30$2.39$2.391,047,900
2023-10-27$2.31$2.311,032,800
2023-10-26$2.32$2.326,369,700
2023-10-25$2.37$2.37895,600
2023-10-24$2.36$2.361,312,600
2023-10-23$2.14$2.14993,200
2023-10-20$2.17$2.171,197,500
2023-10-19$2.33$2.331,211,800
2023-10-18$2.52$2.52897,700
2023-10-17$2.64$2.64964,000
2023-10-16$2.75$2.75991,200
2023-10-13$2.66$2.66801,400
2023-10-12$2.61$2.611,511,800
2023-10-11$2.86$2.861,973,100
2023-10-10$2.73$2.731,160,800
2023-10-09$2.56$2.561,105,300
2023-10-06$2.52$2.52886,600
2023-10-05$2.60$2.60723,300
2023-10-04$2.51$2.51632,400
2023-10-03$2.44$2.44919,800
2023-10-02$2.54$2.541,235,100
2023-09-29$2.60$2.60984,700
2023-09-28$2.50$2.50745,300
2023-09-27$2.52$2.52604,300
2023-09-26$2.52$2.52825,100
2023-09-25$2.51$2.51577,500
2023-09-22$2.61$2.61665,300
2023-09-21$2.56$2.56686,900
2023-09-20$2.70$2.70746,200
2023-09-19$2.87$2.871,101,700
2023-09-18$2.71$2.712,043,600
2023-09-15$2.92$2.921,983,700
2023-09-14$2.79$2.792,117,200
2023-09-13$2.67$2.671,906,300
2023-09-12$2.61$2.611,451,000
2023-09-11$2.43$2.43403,700
2023-09-08$2.45$2.45607,000
2023-09-07$2.46$2.46790,400
2023-09-06$2.49$2.49836,300
2023-09-05$2.51$2.51584,300
2023-09-01$2.65$2.65918,500
2023-08-31$2.53$2.53765,500
2023-08-30$2.50$2.50654,200
2023-08-29$2.47$2.47747,200
2023-08-28$2.40$2.401,050,600
2023-08-25$2.40$2.40697,700
2023-08-24$2.45$2.45678,800
2023-08-23$2.55$2.55606,900
2023-08-22$2.58$2.58785,400
2023-08-21$2.56$2.56914,100
2023-08-18$2.65$2.65697,300
2023-08-17$2.69$2.69786,900
2023-08-16$2.72$2.721,157,000
2023-08-15$2.81$2.811,316,100
2023-08-14$2.98$2.981,151,900
2023-08-11$3.01$3.012,170,700
2023-08-10$3.04$3.042,252,400
2023-08-09$2.95$2.951,975,100
2023-08-08$3.01$3.011,532,100
2023-08-07$3.05$3.05867,700
2023-08-04$3.14$3.14852,200
2023-08-03$3.11$3.11927,400
2023-08-02$3.05$3.051,004,200
2023-08-01$3.17$3.171,230,300
2023-07-31$3.31$3.311,190,000
2023-07-28$3.25$3.251,972,000
2023-07-27$2.99$2.99961,300
2023-07-26$3.05$3.051,112,700
2023-07-25$3.00$3.001,307,800
2023-07-24$3.09$3.091,176,100
2023-07-21$3.14$3.141,171,100
2023-07-20$3.18$3.18879,600
2023-07-19$3.20$3.201,355,300
2023-07-18$3.15$3.151,155,100
2023-07-17$3.18$3.181,277,400
2023-07-14$3.28$3.281,081,200
2023-07-13$3.39$3.392,270,600
2023-07-12$3.32$3.321,162,600
2023-07-11$3.38$3.381,096,800
2023-07-10$3.44$3.441,391,300
2023-07-07$3.29$3.29851,100
2023-07-06$3.36$3.361,869,400
2023-07-05$3.40$3.401,386,000
2023-07-03$3.45$3.45671,100
2023-06-30$3.53$3.531,285,200
2023-06-29$3.50$3.501,614,000
2023-06-28$3.59$3.592,121,700
2023-06-27$3.69$3.694,067,600
2023-06-26$3.45$3.453,305,900
2023-06-23$3.91$3.918,847,200
2023-06-22$4.16$4.161,280,400
2023-06-21$4.19$4.192,755,700
2023-06-20$4.08$4.081,856,700
2023-06-16$4.00$4.0013,917,200
2023-06-15$4.09$4.091,593,800
2023-06-14$4.05$4.052,451,400
2023-06-13$4.00$4.001,690,900
2023-06-12$3.97$3.972,351,100
2023-06-09$4.00$4.001,225,200
2023-06-08$4.09$4.091,569,300
2023-06-07$4.10$4.101,196,200
2023-06-06$4.20$4.201,176,000
2023-06-05$4.27$4.271,404,300
2023-06-02$4.26$4.261,391,200
2023-06-01$4.15$4.151,826,900
2023-05-31$4.04$4.042,165,500
2023-05-30$4.00$4.001,428,400
2023-05-26$4.09$4.091,110,900
2023-05-25$4.21$4.211,295,700
2023-05-24$4.29$4.291,306,600
2023-05-23$4.43$4.431,583,400
2023-05-22$4.48$4.481,275,000
2023-05-19$4.49$4.491,106,800
2023-05-18$4.45$4.451,829,200
2023-05-17$4.60$4.601,202,400
2023-05-16$4.65$4.651,455,800
2023-05-15$4.85$4.851,892,100
2023-05-12$5.09$5.091,521,100
2023-05-11$5.33$5.331,742,400
2023-05-10$4.98$4.981,298,800
2023-05-09$4.94$4.94922,400
2023-05-08$4.92$4.92946,700
2023-05-05$4.94$4.941,006,200
2023-05-04$4.94$4.94997,300
2023-05-03$4.98$4.981,478,800
2023-05-02$4.74$4.741,280,700
2023-05-01$4.92$4.92962,300
2023-04-28$5.05$5.051,074,800
2023-04-27$4.96$4.961,407,000
2023-04-26$5.22$5.221,412,400
2023-04-25$5.23$5.23998,100
2023-04-24$5.52$5.521,264,200
2023-04-21$5.79$5.791,280,600
2023-04-20$5.73$5.731,655,200
2023-04-19$5.97$5.972,882,500
2023-04-18$5.70$5.702,429,700
2023-04-17$5.45$5.453,517,700
2023-04-14$4.78$4.782,066,800
2023-04-13$4.61$4.612,985,400
2023-04-12$4.11$4.111,211,300
2023-04-11$4.14$4.142,138,400
2023-04-10$4.04$4.041,960,400
2023-04-06$4.01$4.011,642,600
2023-04-05$3.87$3.872,181,700
2023-04-04$4.12$4.122,010,500
2023-04-03$4.42$4.422,205,600
2023-03-31$4.22$4.224,137,100
2023-03-30$4.22$4.222,538,600
2023-03-29$4.37$4.372,257,700
2023-03-28$4.42$4.422,175,000
2023-03-27$4.82$4.823,319,600
2023-03-24$4.32$4.323,667,800
2023-03-23$4.19$4.192,963,200
2023-03-22$4.20$4.209,424,400
2023-03-21$4.95$4.9520,923,800
2023-03-20$10.92$10.922,234,900
2023-03-17$11.01$11.012,342,200
2023-03-16$10.96$10.96896,000
2023-03-15$10.93$10.93978,000
2023-03-14$11.09$11.091,349,600
2023-03-13$10.78$10.781,388,000
2023-03-10$10.37$10.371,765,800
2023-03-09$11.37$11.371,411,200
2023-03-08$11.05$11.051,149,500
2023-03-07$10.75$10.75984,300
2023-03-06$11.65$11.651,721,500
2023-03-03$11.59$11.591,008,400
2023-03-02$11.56$11.56786,200
2023-03-01$12.05$12.051,056,600
2023-02-28$12.59$12.59968,800
2023-02-27$11.83$11.83720,100
2023-02-24$11.98$11.981,100,700
2023-02-23$11.85$11.85589,300
2023-02-22$11.67$11.67860,900
2023-02-21$11.33$11.331,143,200
2023-02-17$11.96$11.96791,100
2023-02-16$11.61$11.611,251,700
2023-02-15$11.99$11.99835,800
2023-02-14$12.38$12.381,560,000
2023-02-13$13.21$13.21645,600
2023-02-10$13.43$13.431,010,200
2023-02-09$14.03$14.03681,900
2023-02-08$13.85$13.851,055,500
2023-02-07$15.17$15.17978,700
2023-02-06$15.23$15.231,038,800
2023-02-03$15.16$15.161,200,300
2023-02-02$15.04$15.041,444,300
2023-02-01$13.78$13.781,121,000
2023-01-31$13.64$13.641,297,800
2023-01-30$12.88$12.882,780,200
2023-01-27$13.23$13.231,722,200
2023-01-26$13.91$13.91892,900
2023-01-25$14.03$14.032,731,800
2023-01-24$14.16$14.161,228,000
2023-01-23$14.57$14.571,630,800
2023-01-20$14.35$14.351,554,300
2023-01-19$14.96$14.96812,700
2023-01-18$14.98$14.981,122,100
2023-01-17$14.96$14.961,483,400
2023-01-13$16.29$16.291,465,900
2023-01-12$16.83$16.831,296,500
2023-01-11$15.57$15.571,154,200
2023-01-10$15.30$15.301,370,900
2023-01-09$13.97$13.97981,700
2023-01-06$14.29$14.29742,800
2023-01-05$14.34$14.341,028,600
2023-01-04$14.81$14.811,079,000
2023-01-03$15.63$15.631,036,900