NASDAQ:ATOS | Historical Stock Price | ATOSSA THERAPEUTICS, 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
2012-11-08 to 2026-09-04
Data captured

Stock Price Chart

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

$1.79$12.58$88.67$624.73$4,401.82$31,014.902012-11-082026-08-27

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

View year

Historical Stock Price — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$8.85$8.85247,867
2025-12-30$9.30$9.30110,973
2025-12-29$9.90$9.9070,720
2025-12-26$9.90$9.9065,167
2025-12-24$10.35$10.3545,707
2025-12-23$10.20$10.20152,540
2025-12-22$10.80$10.8042,893
2025-12-19$10.95$10.9563,053
2025-12-18$10.50$10.5041,907
2025-12-17$10.65$10.6532,133
2025-12-16$10.80$10.8039,640
2025-12-15$10.65$10.65193,387
2025-12-12$12.45$12.4597,133
2025-12-11$13.50$13.50388,287
2025-12-10$12.75$12.7568,380
2025-12-09$12.15$12.1538,707
2025-12-08$11.70$11.7030,700
2025-12-05$12.00$12.0056,260
2025-12-04$11.40$11.4047,213
2025-12-03$11.10$11.1041,473
2025-12-02$10.50$10.5080,973
2025-12-01$11.10$11.1049,787
2025-11-28$11.70$11.7015,893
2025-11-26$11.70$11.7041,907
2025-11-25$11.55$11.5515,800
2025-11-24$11.25$11.2552,853
2025-11-21$11.70$11.7039,687
2025-11-20$11.25$11.2533,133
2025-11-19$11.40$11.4030,227
2025-11-18$11.85$11.8528,520
2025-11-17$11.85$11.8550,780
2025-11-14$12.00$12.0032,200
2025-11-13$12.00$12.0052,127
2025-11-12$12.15$12.1541,540
2025-11-11$12.45$12.4515,727
2025-11-10$12.60$12.6031,880
2025-11-07$12.30$12.3058,760
2025-11-06$12.15$12.1521,800
2025-11-05$12.45$12.4524,340
2025-11-04$12.75$12.7540,360
2025-11-03$12.90$12.9035,573
2025-10-31$13.35$13.3529,633
2025-10-30$13.20$13.2037,100
2025-10-29$13.20$13.2055,833
2025-10-28$14.10$14.1023,527
2025-10-27$14.10$14.1037,273
2025-10-24$13.95$13.9542,467
2025-10-23$13.80$13.8032,093
2025-10-22$13.80$13.8090,440
2025-10-21$14.40$14.4043,267
2025-10-20$15.15$15.1540,260
2025-10-17$14.70$14.7080,567
2025-10-16$15.45$15.4570,827
2025-10-15$15.75$15.7554,553
2025-10-14$15.45$15.45102,133
2025-10-13$15.75$15.75103,413
2025-10-10$16.20$16.20162,287
2025-10-09$17.70$17.70291,527
2025-10-08$16.65$16.65275,467
2025-10-07$15.15$15.1572,160
2025-10-06$15.00$15.0086,433
2025-10-03$15.15$15.15201,853
2025-10-02$13.80$13.8054,433
2025-10-01$13.80$13.8077,847
2025-09-30$13.05$13.0524,907
2025-09-29$13.05$13.0561,260
2025-09-26$12.90$12.9031,013
2025-09-25$12.30$12.3022,093
2025-09-24$12.45$12.4526,713
2025-09-23$12.30$12.3063,847
2025-09-22$12.45$12.4531,240
2025-09-19$12.75$12.7550,033
2025-09-18$13.20$13.2069,533
2025-09-17$12.45$12.4533,007
2025-09-16$12.30$12.3037,120
2025-09-15$12.30$12.3039,500
2025-09-12$12.60$12.6032,927
2025-09-11$12.30$12.3044,407
2025-09-10$12.00$12.0028,107
2025-09-09$12.15$12.1535,847
2025-09-08$12.15$12.1550,547
2025-09-05$11.85$11.8537,247
2025-09-04$11.55$11.5515,240
2025-09-03$11.55$11.5536,980
2025-09-02$11.55$11.5525,180
2025-08-29$11.40$11.4020,040
2025-08-28$11.25$11.2523,793
2025-08-27$11.40$11.4030,480
2025-08-26$11.70$11.7022,033
2025-08-25$11.40$11.4029,813
2025-08-22$11.70$11.7031,467
2025-08-21$11.10$11.1024,067
2025-08-20$11.10$11.1032,073
2025-08-19$11.25$11.2549,967
2025-08-18$11.85$11.8535,107
2025-08-15$11.70$11.7039,293
2025-08-14$11.70$11.7030,193
2025-08-13$11.85$11.8545,967
2025-08-12$11.55$11.5547,007
2025-08-11$11.40$11.4057,467
2025-08-08$11.85$11.8535,913
2025-08-07$11.55$11.5547,220
2025-08-06$11.85$11.8560,127
2025-08-05$12.15$12.1559,040
2025-08-04$12.45$12.4526,960
2025-08-01$12.30$12.3045,700
2025-07-31$12.45$12.4556,427
2025-07-30$13.05$13.0597,260
2025-07-29$13.80$13.80872,140
2025-07-28$12.30$12.3054,400
2025-07-25$12.60$12.6079,233
2025-07-24$12.90$12.9028,880
2025-07-23$13.35$13.3550,867
2025-07-22$12.90$12.9028,233
2025-07-21$12.75$12.7527,833
2025-07-18$12.60$12.6045,387
2025-07-17$13.05$13.0563,260
2025-07-16$13.35$13.3540,800
2025-07-15$13.65$13.6526,880
2025-07-14$14.10$14.1044,433
2025-07-11$14.10$14.1064,767
2025-07-10$13.35$13.3563,580
2025-07-09$13.50$13.5067,160
2025-07-08$12.75$12.7528,833
2025-07-07$12.75$12.7541,053
2025-07-03$12.75$12.7531,220
2025-07-02$12.60$12.6036,220
2025-07-01$12.30$12.3039,373
2025-06-30$12.45$12.4550,500
2025-06-27$13.20$13.201,090,827
2025-06-26$13.20$13.2083,887
2025-06-25$12.90$12.9068,047
2025-06-24$12.45$12.4551,667
2025-06-23$12.00$12.0070,553
2025-06-20$11.85$11.8548,300
2025-06-18$12.00$12.0050,373
2025-06-17$12.15$12.1537,600
2025-06-16$12.75$12.7539,500
2025-06-13$12.45$12.4534,567
2025-06-12$12.90$12.9047,960
2025-06-11$13.20$13.2041,380
2025-06-10$13.35$13.3563,813
2025-06-09$13.65$13.6527,580
2025-06-06$13.50$13.5043,107
2025-06-05$12.90$12.9045,487
2025-06-04$12.90$12.9021,520
2025-06-03$12.75$12.7540,233
2025-06-02$13.05$13.0559,213
2025-05-30$11.70$11.7046,073
2025-05-29$11.40$11.4079,280
2025-05-28$12.15$12.1528,740
2025-05-27$12.60$12.6037,920
2025-05-23$12.45$12.4540,720
2025-05-22$13.05$13.0541,173
2025-05-21$13.05$13.0563,420
2025-05-20$14.10$14.1044,493
2025-05-19$14.70$14.7027,720
2025-05-16$14.55$14.5538,413
2025-05-15$14.85$14.8571,787
2025-05-14$15.45$15.45170,920
2025-05-13$13.35$13.3541,500
2025-05-12$12.60$12.6036,980
2025-05-09$12.30$12.3033,853
2025-05-08$12.15$12.1525,747
2025-05-07$12.15$12.1532,993
2025-05-06$12.45$12.4548,007
2025-05-05$13.20$13.2027,113
2025-05-02$12.90$12.9035,207
2025-05-01$12.60$12.6061,000
2025-04-30$13.50$13.5072,740
2025-04-29$12.00$12.0048,620
2025-04-28$11.10$11.1029,327
2025-04-25$11.40$11.4024,920
2025-04-24$10.95$10.9540,740
2025-04-23$11.10$11.1086,447
2025-04-22$9.90$9.9039,560
2025-04-21$9.60$9.6033,387
2025-04-17$9.30$9.3027,747
2025-04-16$9.15$9.1540,200
2025-04-15$9.30$9.3047,867
2025-04-14$9.45$9.4534,960
2025-04-11$9.75$9.7542,267
2025-04-10$8.85$8.8539,707
2025-04-09$9.30$9.3066,187
2025-04-08$8.85$8.8559,887
2025-04-07$9.75$9.7569,073
2025-04-04$9.00$9.00100,333
2025-04-03$9.60$9.6056,167
2025-04-02$10.35$10.3535,873
2025-04-01$9.75$9.7533,680
2025-03-31$10.05$10.0547,307
2025-03-28$10.50$10.5029,007
2025-03-27$10.50$10.5028,860
2025-03-26$10.50$10.5038,393
2025-03-25$10.80$10.8028,093
2025-03-24$11.25$11.2535,520
2025-03-21$11.25$11.2570,867
2025-03-20$10.80$10.8030,633
2025-03-19$11.10$11.1024,453
2025-03-18$10.80$10.8040,053
2025-03-17$10.95$10.9523,827
2025-03-14$10.80$10.8026,313
2025-03-13$10.35$10.3571,733
2025-03-12$10.80$10.8041,360
2025-03-11$11.10$11.1031,020
2025-03-10$11.10$11.1040,480
2025-03-07$11.10$11.1018,393
2025-03-06$11.25$11.2527,293
2025-03-05$11.10$11.1015,493
2025-03-04$10.95$10.9527,387
2025-03-03$11.10$11.1047,793
2025-02-28$11.55$11.5533,447
2025-02-27$11.25$11.2528,253
2025-02-26$11.55$11.5526,413
2025-02-25$11.25$11.2550,220
2025-02-24$11.70$11.7030,480
2025-02-21$12.00$12.0037,793
2025-02-20$12.60$12.6028,667
2025-02-19$13.20$13.2041,787
2025-02-18$12.60$12.6039,673
2025-02-14$12.45$12.4542,333
2025-02-13$12.30$12.3042,080
2025-02-12$11.55$11.5544,273
2025-02-11$11.70$11.7044,160
2025-02-10$12.30$12.3038,460
2025-02-07$11.55$11.5552,087
2025-02-06$12.15$12.1550,313
2025-02-05$12.75$12.7531,607
2025-02-04$12.75$12.7538,647
2025-02-03$12.75$12.7550,080
2025-01-31$12.60$12.6048,073
2025-01-30$13.05$13.05110,380
2025-01-29$12.75$12.7542,907
2025-01-28$13.05$13.0530,833
2025-01-27$13.05$13.0554,967
2025-01-24$13.95$13.9534,900
2025-01-23$14.10$14.1048,227
2025-01-22$14.40$14.4069,300
2025-01-21$13.05$13.0552,420
2025-01-17$12.45$12.4571,920
2025-01-16$12.75$12.7535,893
2025-01-15$13.05$13.0567,773
2025-01-14$13.05$13.0587,200
2025-01-13$13.80$13.8038,340
2025-01-10$13.50$13.5080,080
2025-01-08$13.80$13.8048,820
2025-01-07$14.25$14.2544,113
2025-01-06$14.40$14.4045,733
2025-01-03$15.15$15.1539,667
2025-01-02$14.40$14.4040,680