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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$9.16$9.16779,300
2021-12-30$8.93$8.93991,700
2021-12-29$8.73$8.73842,800
2021-12-28$8.75$8.75836,700
2021-12-27$8.84$8.84449,900
2021-12-23$9.20$9.20467,300
2021-12-22$9.19$9.19445,800
2021-12-21$9.22$9.22843,900
2021-12-20$9.55$9.55792,500
2021-12-17$9.36$9.362,398,600
2021-12-16$9.10$9.10792,300
2021-12-15$9.08$9.081,051,300
2021-12-14$8.69$8.691,639,900
2021-12-13$9.21$9.21911,800
2021-12-10$9.42$9.42466,500
2021-12-09$9.62$9.62352,600
2021-12-08$10.18$10.18399,600
2021-12-07$9.79$9.79689,400
2021-12-06$9.27$9.27545,700
2021-12-03$9.48$9.48836,600
2021-12-02$10.12$10.12595,900
2021-12-01$9.85$9.85902,400
2021-11-30$10.49$10.49632,000
2021-11-29$10.26$10.26491,100
2021-11-26$10.42$10.42414,500
2021-11-24$10.43$10.43325,900
2021-11-23$10.46$10.46791,200
2021-11-22$10.20$10.20769,800
2021-11-19$10.55$10.55673,200
2021-11-18$10.92$10.921,105,600
2021-11-17$10.76$10.76586,100
2021-11-16$11.18$11.18516,200
2021-11-15$11.16$11.16707,800
2021-11-12$11.11$11.11819,700
2021-11-11$11.08$11.081,403,100
2021-11-10$10.92$10.92611,400
2021-11-09$10.92$10.921,308,100
2021-11-08$10.97$10.971,158,800
2021-11-05$10.84$10.84739,100
2021-11-04$10.99$10.99538,100
2021-11-03$11.30$11.30379,400
2021-11-02$11.20$11.20482,800
2021-11-01$11.10$11.101,041,900
2021-10-29$10.80$10.80824,000
2021-10-28$11.30$11.30730,900
2021-10-27$11.00$11.001,228,800
2021-10-26$11.28$11.28543,500
2021-10-25$11.39$11.39763,900
2021-10-22$11.52$11.52853,100
2021-10-21$11.80$11.80532,300
2021-10-20$11.93$11.931,010,100
2021-10-19$12.39$12.39513,500
2021-10-18$12.20$12.20562,900
2021-10-15$12.01$12.01671,400
2021-10-14$12.48$12.48493,000
2021-10-13$12.43$12.43536,300
2021-10-12$12.41$12.41581,600
2021-10-11$12.38$12.38827,600
2021-10-08$12.17$12.17521,600
2021-10-07$12.31$12.31889,200
2021-10-06$11.49$11.49694,000
2021-10-05$11.48$11.481,167,800
2021-10-04$11.32$11.32979,500
2021-10-01$11.95$11.951,308,500
2021-09-30$11.31$11.313,372,500
2021-09-29$12.76$12.762,299,100
2021-09-28$14.81$14.8116,470,700
2021-09-27$15.19$15.19963,000
2021-09-24$14.97$14.97681,600
2021-09-23$15.44$15.44681,200
2021-09-22$15.19$15.19957,900
2021-09-21$15.04$15.04629,200
2021-09-20$14.57$14.571,461,100
2021-09-17$15.24$15.242,539,600
2021-09-16$16.40$16.40664,100
2021-09-15$16.53$16.531,554,000
2021-09-14$16.61$16.61919,800
2021-09-13$16.57$16.571,760,100
2021-09-10$16.81$16.811,728,400
2021-09-09$16.40$16.401,107,900
2021-09-08$16.51$16.512,361,300
2021-09-07$16.21$16.211,408,600
2021-09-03$16.43$16.431,003,800
2021-09-02$16.07$16.071,659,400
2021-09-01$15.37$15.37819,100
2021-08-31$14.99$14.991,130,500
2021-08-30$14.09$14.09825,300
2021-08-27$14.69$14.691,154,400
2021-08-26$14.28$14.281,809,600
2021-08-25$13.80$13.80961,600
2021-08-24$13.26$13.26902,100
2021-08-23$13.08$13.081,847,000
2021-08-20$12.68$12.681,311,500
2021-08-19$11.58$11.58783,300
2021-08-18$11.90$11.90862,000
2021-08-17$12.05$12.05823,700
2021-08-16$11.65$11.651,491,000
2021-08-13$12.02$12.021,201,900
2021-08-12$11.83$11.831,913,500
2021-08-11$11.15$11.151,979,400
2021-08-10$10.88$10.881,112,600
2021-08-09$10.46$10.461,184,000
2021-08-06$10.25$10.25673,200
2021-08-05$10.22$10.22694,300
2021-08-04$9.74$9.741,368,000
2021-08-03$9.75$9.751,056,700
2021-08-02$9.24$9.24534,300
2021-07-30$9.07$9.07516,400
2021-07-29$9.06$9.06465,000
2021-07-28$9.40$9.40694,300
2021-07-27$9.02$9.02797,700
2021-07-26$9.07$9.07701,900
2021-07-23$8.88$8.88737,600
2021-07-22$9.25$9.25427,000
2021-07-21$9.60$9.60742,500
2021-07-20$9.40$9.401,370,900
2021-07-19$9.19$9.191,050,700
2021-07-16$8.79$8.79781,000
2021-07-15$8.62$8.62748,200
2021-07-14$8.52$8.52926,900
2021-07-13$8.60$8.601,312,600
2021-07-12$8.91$8.91843,000
2021-07-09$9.21$9.21931,000
2021-07-08$9.03$9.032,285,600
2021-07-07$8.43$8.432,681,100
2021-07-06$8.87$8.872,166,100
2021-07-02$9.34$9.344,034,800
2021-07-01$10.04$10.045,547,000
2021-06-30$9.85$9.8518,633,400
2021-06-29$15.90$15.903,705,200
2021-06-28$16.30$16.30904,300
2021-06-25$16.08$16.085,214,600
2021-06-24$16.20$16.20789,500
2021-06-23$16.19$16.19792,100
2021-06-22$15.56$15.56843,700
2021-06-21$15.64$15.641,038,900
2021-06-18$15.98$15.981,709,400
2021-06-17$15.86$15.862,542,000
2021-06-16$16.46$16.4623,446,700
2021-06-15$14.13$14.131,356,700
2021-06-14$14.26$14.26779,200
2021-06-11$14.37$14.37816,000
2021-06-10$14.08$14.081,415,100
2021-06-09$15.13$15.132,887,700
2021-06-08$13.94$13.94740,500
2021-06-07$13.40$13.401,297,200
2021-06-04$12.95$12.95447,000
2021-06-03$12.92$12.92540,500
2021-06-02$13.14$13.141,310,000
2021-06-01$12.46$12.46436,400
2021-05-28$12.65$12.65498,600
2021-05-27$12.89$12.89587,000
2021-05-26$12.66$12.661,079,400
2021-05-25$11.80$11.801,186,900
2021-05-24$12.05$12.052,485,600
2021-05-21$14.01$14.01626,900
2021-05-20$14.34$14.34576,200
2021-05-19$14.09$14.091,665,600
2021-05-18$14.07$14.07771,500
2021-05-17$14.18$14.18945,100
2021-05-14$13.38$13.38678,600
2021-05-13$12.74$12.74698,700
2021-05-12$12.85$12.85583,600
2021-05-11$13.34$13.34687,100
2021-05-10$13.08$13.08757,800
2021-05-07$13.27$13.27656,000
2021-05-06$12.93$12.931,128,300
2021-05-05$13.36$13.36732,700
2021-05-04$13.77$13.77966,800
2021-05-03$13.97$13.97834,100
2021-04-30$14.47$14.47994,400
2021-04-29$14.22$14.221,383,500
2021-04-28$13.99$13.991,340,300
2021-04-27$13.84$13.841,097,100
2021-04-26$13.47$13.47953,900
2021-04-23$12.44$12.44554,900
2021-04-22$12.68$12.68868,500
2021-04-21$12.43$12.43820,200
2021-04-20$11.81$11.81672,100
2021-04-19$11.78$11.78895,900
2021-04-16$12.27$12.271,092,700
2021-04-15$12.73$12.73710,300
2021-04-14$12.95$12.95820,200
2021-04-13$12.67$12.67769,400
2021-04-12$12.57$12.57966,000
2021-04-09$12.90$12.90755,100
2021-04-08$13.12$13.12676,500
2021-04-07$13.61$13.61715,300
2021-04-06$13.31$13.31616,200
2021-04-05$13.97$13.97629,600
2021-04-01$14.00$14.001,131,500
2021-03-31$14.13$14.131,148,500
2021-03-30$13.55$13.55622,400
2021-03-29$13.04$13.041,071,500
2021-03-26$13.85$13.851,233,000
2021-03-25$14.12$14.121,334,600
2021-03-24$13.20$13.201,075,200
2021-03-23$14.36$14.361,357,400
2021-03-22$15.84$15.841,350,500
2021-03-19$16.42$16.425,880,600
2021-03-18$17.27$17.271,260,900
2021-03-17$17.38$17.382,632,700
2021-03-16$16.74$16.74960,800
2021-03-15$17.73$17.732,059,500
2021-03-12$16.76$16.762,585,800
2021-03-11$16.88$16.881,259,200
2021-03-10$14.70$14.701,067,500
2021-03-09$14.82$14.821,049,900
2021-03-08$13.09$13.091,086,500
2021-03-05$12.94$12.941,758,300
2021-03-04$13.18$13.182,182,500
2021-03-03$14.37$14.371,744,400
2021-03-02$15.76$15.76962,600
2021-03-01$16.41$16.411,135,400
2021-02-26$15.94$15.941,468,100
2021-02-25$17.20$17.202,329,600
2021-02-24$19.58$19.58820,200
2021-02-23$19.16$19.162,232,700
2021-02-22$19.56$19.561,646,100
2021-02-19$22.93$22.931,323,600
2021-02-18$23.51$23.511,651,000
2021-02-17$24.31$24.312,750,300
2021-02-16$21.35$21.351,077,500
2021-02-12$22.22$22.221,106,000
2021-02-11$22.08$22.081,599,800
2021-02-10$21.07$21.072,829,200
2021-02-09$21.58$21.582,112,900
2021-02-08$19.16$19.161,735,700
2021-02-05$18.36$18.361,673,600
2021-02-04$17.69$17.691,135,600
2021-02-03$17.47$17.471,582,300
2021-02-02$17.50$17.502,942,900
2021-02-01$16.71$16.713,983,000
2021-01-29$14.28$14.281,532,900
2021-01-28$13.45$13.451,896,300
2021-01-27$13.61$13.613,005,900
2021-01-26$16.16$16.162,970,000
2021-01-25$16.90$16.903,277,800
2021-01-22$14.35$14.352,341,600
2021-01-21$12.91$12.911,070,700
2021-01-20$13.32$13.321,021,500
2021-01-19$13.59$13.591,161,200
2021-01-15$12.93$12.931,126,500
2021-01-14$13.57$13.57981,200
2021-01-13$13.69$13.69849,800
2021-01-12$13.85$13.85867,200
2021-01-11$13.37$13.371,344,500
2021-01-08$14.12$14.121,749,900
2021-01-07$13.90$13.901,423,000
2021-01-06$12.80$12.801,535,400
2021-01-05$12.75$12.751,179,800
2021-01-04$12.71$12.712,010,400