OTC:IOBTQ | Historical Stock Price | IO Biotech, 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
2021-11-05 to 2026-08-28
Data captured

Stock Price Chart

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

$0.00$0.00$0.01$0.13$1.47$16.432021-11-052026-08-28

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 volume
2025-12-31$0.61$0.61990,713
2025-12-30$0.58$0.581,229,213
2025-12-29$0.68$0.68387,529
2025-12-26$0.74$0.74347,452
2025-12-24$0.74$0.74246,181
2025-12-23$0.70$0.70506,984
2025-12-22$0.71$0.71643,510
2025-12-19$0.66$0.66560,637
2025-12-18$0.62$0.62769,422
2025-12-17$0.63$0.63799,194
2025-12-16$0.69$0.69467,095
2025-12-15$0.71$0.711,364,347
2025-12-12$0.81$0.81335,507
2025-12-11$0.85$0.85547,265
2025-12-10$0.81$0.81323,489
2025-12-09$0.85$0.851,344,199
2025-12-08$0.75$0.75804,656
2025-12-05$0.70$0.701,037,215
2025-12-04$0.68$0.681,019,458
2025-12-03$0.64$0.641,087,514
2025-12-02$0.63$0.631,318,758
2025-12-01$0.68$0.681,206,601
2025-11-28$0.72$0.72613,428
2025-11-26$0.73$0.73390,601
2025-11-25$0.73$0.731,009,086
2025-11-24$0.79$0.79403,965
2025-11-21$0.80$0.80716,875
2025-11-20$0.74$0.74319,143
2025-11-19$0.75$0.75348,736
2025-11-18$0.83$0.831,150,639
2025-11-17$0.66$0.662,531,609
2025-11-14$0.83$0.83414,842
2025-11-13$0.81$0.81549,227
2025-11-12$0.82$0.82622,740
2025-11-11$0.87$0.87920,303
2025-11-10$0.88$0.881,078,830
2025-11-07$0.90$0.901,687,926
2025-11-06$0.84$0.84453,981
2025-11-05$0.89$0.89810,463
2025-11-04$0.84$0.84702,383
2025-11-03$0.91$0.911,338,967
2025-10-31$1.04$1.042,098,431
2025-10-30$0.86$0.861,123,949
2025-10-29$0.87$0.871,214,760
2025-10-28$0.90$0.901,393,353
2025-10-27$0.91$0.912,045,382
2025-10-24$1.00$1.001,482,286
2025-10-23$1.00$1.003,607,812
2025-10-22$1.17$1.177,758,302
2025-10-21$1.02$1.028,351,724
2025-10-20$0.82$0.8271,028,467
2025-10-17$0.66$0.662,126,116
2025-10-16$0.77$0.773,384,366
2025-10-15$0.67$0.673,146,564
2025-10-14$0.64$0.642,223,186
2025-10-13$0.58$0.581,668,159
2025-10-10$0.55$0.555,269,772
2025-10-09$0.53$0.531,948,411
2025-10-08$0.50$0.501,580,536
2025-10-07$0.51$0.513,198,667
2025-10-06$0.48$0.484,321,391
2025-10-03$0.48$0.485,573,318
2025-10-02$0.44$0.4416,823,017
2025-10-01$0.36$0.363,713,684
2025-09-30$0.36$0.366,583,480
2025-09-29$0.37$0.3736,726,221
2025-09-26$1.58$1.58580,659
2025-09-25$1.58$1.58525,780
2025-09-24$1.58$1.581,281,110
2025-09-23$1.60$1.601,693,185
2025-09-22$1.49$1.49805,670
2025-09-19$1.56$1.561,628,334
2025-09-18$1.62$1.621,745,294
2025-09-17$1.71$1.71943,491
2025-09-16$1.72$1.721,405,446
2025-09-15$1.84$1.841,271,399
2025-09-12$2.08$2.081,120,400
2025-09-11$1.91$1.911,207,881
2025-09-10$1.77$1.77738,876
2025-09-09$1.80$1.80595,281
2025-09-08$1.80$1.80795,531
2025-09-05$1.95$1.951,694,377
2025-09-04$1.78$1.78906,010
2025-09-03$1.75$1.752,846,702
2025-09-02$1.67$1.671,063,040
2025-08-29$1.58$1.58510,342
2025-08-28$1.58$1.58714,196
2025-08-27$1.68$1.68907,785
2025-08-26$1.72$1.72609,668
2025-08-25$1.71$1.711,120,237
2025-08-22$1.74$1.741,453,551
2025-08-21$1.77$1.771,225,753
2025-08-20$1.88$1.882,017,276
2025-08-19$2.05$2.052,765,310
2025-08-18$2.09$2.0913,717,218
2025-08-15$2.16$2.1637,965,452
2025-08-14$1.28$1.283,333,019
2025-08-13$1.31$1.312,555,486
2025-08-12$1.31$1.3120,100,274
2025-08-11$1.05$1.0582,891,208
2025-08-08$1.81$1.81358,354
2025-08-07$1.89$1.89364,745
2025-08-06$1.96$1.96289,145
2025-08-05$2.15$2.15180,421
2025-08-04$2.15$2.15406,022
2025-08-01$2.22$2.22192,601
2025-07-31$2.23$2.23495,444
2025-07-30$2.12$2.12332,164
2025-07-29$2.19$2.19870,513
2025-07-28$2.40$2.402,185,645
2025-07-25$2.06$2.06406,462
2025-07-24$1.93$1.931,014,990
2025-07-23$1.93$1.93339,743
2025-07-22$1.95$1.95252,832
2025-07-21$2.02$2.02388,768
2025-07-18$2.05$2.05760,508
2025-07-17$2.00$2.00927,239
2025-07-16$1.89$1.89435,874
2025-07-15$1.70$1.70525,759
2025-07-14$1.70$1.701,124,164
2025-07-11$1.47$1.47460,363
2025-07-10$1.40$1.40371,396
2025-07-09$1.44$1.4475,067
2025-07-08$1.45$1.45149,348
2025-07-07$1.43$1.43209,959
2025-07-03$1.49$1.49182,872
2025-07-02$1.49$1.49206,841
2025-07-01$1.38$1.3890,533
2025-06-30$1.39$1.39165,847
2025-06-27$1.44$1.44145,095
2025-06-26$1.48$1.48157,550
2025-06-25$1.51$1.51141,504
2025-06-24$1.39$1.39163,898
2025-06-23$1.30$1.3050,687
2025-06-20$1.30$1.3057,790
2025-06-18$1.30$1.30136,930
2025-06-17$1.32$1.32111,226
2025-06-16$1.32$1.32175,035
2025-06-13$1.35$1.35384,674
2025-06-12$1.50$1.5093,479
2025-06-11$1.50$1.50102,632
2025-06-10$1.48$1.48180,009
2025-06-09$1.55$1.55241,188
2025-06-06$1.60$1.60182,915
2025-06-05$1.50$1.50132,750
2025-06-04$1.45$1.45192,562
2025-06-03$1.51$1.51413,903
2025-06-02$1.62$1.62641,000
2025-05-30$1.42$1.42493,696
2025-05-29$1.21$1.2178,876
2025-05-28$1.19$1.19185,494
2025-05-27$1.14$1.14297,557
2025-05-23$1.21$1.21154,586
2025-05-22$1.20$1.20412,534
2025-05-21$1.11$1.11150,359
2025-05-20$1.03$1.0378,199
2025-05-19$1.04$1.0485,396
2025-05-16$0.98$0.9886,119
2025-05-15$1.02$1.0268,964
2025-05-14$0.98$0.98119,924
2025-05-13$1.00$1.0086,366
2025-05-12$1.03$1.0399,349
2025-05-09$1.00$1.0067,417
2025-05-08$0.99$0.9952,285
2025-05-07$0.99$0.9965,287
2025-05-06$1.07$1.0790,685
2025-05-05$1.14$1.14231,291
2025-05-02$1.02$1.0254,205
2025-05-01$1.01$1.0172,802
2025-04-30$0.97$0.9742,711
2025-04-29$0.95$0.9562,517
2025-04-28$0.95$0.9550,182
2025-04-25$0.96$0.96213,632
2025-04-24$0.92$0.9263,518
2025-04-23$0.94$0.9485,731
2025-04-22$0.91$0.9199,280
2025-04-21$0.89$0.8968,374
2025-04-17$0.86$0.8641,255
2025-04-16$0.89$0.8970,208
2025-04-15$0.89$0.89110,772
2025-04-14$0.90$0.90104,614
2025-04-11$0.86$0.8629,513
2025-04-10$0.86$0.86127,403
2025-04-09$0.88$0.88226,917
2025-04-08$0.83$0.83326,755
2025-04-07$0.91$0.91263,903
2025-04-04$0.98$0.98180,208
2025-04-03$1.01$1.01109,402
2025-04-02$1.07$1.07139,964
2025-04-01$1.00$1.00233,545
2025-03-31$1.09$1.09208,786
2025-03-28$1.16$1.16218,721
2025-03-27$1.16$1.16151,613
2025-03-26$1.20$1.20394,344
2025-03-25$1.17$1.172,155,928
2025-03-24$1.00$1.00171,304
2025-03-21$0.96$0.9658,296
2025-03-20$0.95$0.95159,050
2025-03-19$0.90$0.9018,250
2025-03-18$0.90$0.9066,083
2025-03-17$0.92$0.9227,921
2025-03-14$0.88$0.8842,414
2025-03-13$0.89$0.8918,621
2025-03-12$0.91$0.9135,084
2025-03-11$0.88$0.8893,663
2025-03-10$0.86$0.8690,672
2025-03-07$0.90$0.9095,953
2025-03-06$0.92$0.9249,062
2025-03-05$0.90$0.90149,274
2025-03-04$0.91$0.91124,163
2025-03-03$0.86$0.86239,062
2025-02-28$0.95$0.95135,218
2025-02-27$1.00$1.0062,453
2025-02-26$1.00$1.00127,556
2025-02-25$0.98$0.98209,842
2025-02-24$1.05$1.05473,361
2025-02-21$1.10$1.1083,257
2025-02-20$1.11$1.11373,758
2025-02-19$1.00$1.0043,014
2025-02-18$0.97$0.97143,772
2025-02-14$0.93$0.9360,552
2025-02-13$0.94$0.9432,748
2025-02-12$0.92$0.9216,708
2025-02-11$0.94$0.9440,283
2025-02-10$0.91$0.91140,782
2025-02-07$0.96$0.9660,889
2025-02-06$0.97$0.97133,000
2025-02-05$0.95$0.9526,176
2025-02-04$0.95$0.95167,177
2025-02-03$0.89$0.8937,804
2025-01-31$0.90$0.9051,235
2025-01-30$0.94$0.9439,573
2025-01-29$0.94$0.9462,379
2025-01-28$0.95$0.95184,005
2025-01-27$0.97$0.97485,177
2025-01-24$0.95$0.95230,965
2025-01-23$0.90$0.90163,159
2025-01-22$0.90$0.90138,399
2025-01-21$0.87$0.87144,209
2025-01-17$0.84$0.84127,038
2025-01-16$0.81$0.8150,816
2025-01-15$0.79$0.79152,955
2025-01-14$0.83$0.83108,111
2025-01-13$0.86$0.86157,893
2025-01-10$0.87$0.87170,327
2025-01-08$0.86$0.8687,158
2025-01-07$0.90$0.9097,656
2025-01-06$0.90$0.90198,210
2025-01-03$0.94$0.94174,204
2025-01-02$0.93$0.93190,601