OTC:CSCIF | Historical Stock Price | COSCIENS Biopharma 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
2000-05-10 to 2026-08-27
Data captured

Stock Price Chart

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

$0.81$11.06$151.57$2,076.53$28,449.18$389,763.772000-05-102026-08-27

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 volume
2025-12-31$2.06$2.061,600
2025-12-30$2.06$2.062,300
2025-12-29$2.12$2.122,800
2025-12-26$2.08$2.08700
2025-12-24$2.17$2.17600
2025-12-23$2.05$2.054,100
2025-12-22$2.12$2.12600
2025-12-19$2.17$2.171,600
2025-12-18$2.13$2.13800
2025-12-17$2.11$2.114,800
2025-12-16$2.07$2.07200
2025-12-15$2.08$2.081,300
2025-12-12$2.25$2.25200
2025-12-11$2.12$2.12900
2025-12-10$2.06$2.06300
2025-12-09$2.10$2.10300
2025-12-08$2.15$2.15400
2025-12-05$2.09$2.09300
2025-12-04$2.06$2.06600
2025-12-03$2.08$2.08400
2025-12-02$2.17$2.17800
2025-12-01$2.04$2.046,700
2025-11-28$2.16$2.165,800
2025-11-26$2.05$2.051,500
2025-11-25$2.02$2.021,500
2025-11-24$2.10$2.101,200
2025-11-21$2.09$2.09200
2025-11-20$2.05$2.053,200
2025-11-19$2.13$2.13600
2025-11-18$2.11$2.112,500
2025-11-17$2.05$2.051,700
2025-11-14$2.24$2.24700
2025-11-13$2.32$2.32200
2025-11-12$2.30$2.30800
2025-11-11$2.45$2.45300
2025-11-10$2.48$2.481,200
2025-11-07$2.48$2.48300
2025-11-06$2.39$2.39400
2025-11-05$2.30$2.300
2025-11-04$2.30$2.301,000
2025-11-03$2.50$2.50600
2025-10-31$2.50$2.501,600
2025-10-30$2.56$2.56900
2025-10-29$2.57$2.570
2025-10-28$2.57$2.57600
2025-10-27$2.50$2.50600
2025-10-24$2.54$2.544,500
2025-10-23$2.50$2.50700
2025-10-22$2.57$2.570
2025-10-21$2.57$2.57600
2025-10-20$2.62$2.62300
2025-10-17$2.62$2.622,300
2025-10-16$2.57$2.571,700
2025-10-15$2.43$2.431,600
2025-10-14$2.55$2.551,800
2025-10-13$2.48$2.48900
2025-10-10$2.55$2.551,900
2025-10-09$2.53$2.532,100
2025-10-08$2.61$2.61500
2025-10-07$2.55$2.55300
2025-10-06$2.69$2.69400
2025-10-03$2.70$2.70900
2025-10-02$2.61$2.61900
2025-10-01$2.62$2.62300
2025-09-30$2.47$2.471,700
2025-09-29$2.64$2.641,100
2025-09-26$2.64$2.64400
2025-09-25$2.46$2.461,200
2025-09-24$2.40$2.403,300
2025-09-23$2.66$2.661,300
2025-09-22$2.62$2.621,200
2025-09-19$2.57$2.57500
2025-09-18$2.55$2.551,000
2025-09-17$2.60$2.602,500
2025-09-16$2.64$2.642,300
2025-09-15$2.64$2.64700
2025-09-12$2.60$2.602,200
2025-09-11$2.56$2.561,700
2025-09-10$2.56$2.56400
2025-09-09$2.60$2.604,500
2025-09-08$2.50$2.502,700
2025-09-05$2.40$2.402,400
2025-09-04$2.45$2.4532,300
2025-09-03$2.72$2.7258,500
2025-09-02$3.08$3.083,200
2025-08-29$3.04$3.042,900
2025-08-28$3.17$3.175,900
2025-08-27$3.14$3.1436,600
2025-08-26$3.00$3.008,900
2025-08-25$2.93$2.93113,600
2025-08-22$3.29$3.2993,800
2025-08-21$2.70$2.706,000
2025-08-20$2.78$2.783,600
2025-08-19$2.63$2.6314,800
2025-08-18$2.89$2.897,100
2025-08-15$2.85$2.8542,300
2025-08-14$3.50$3.500
2025-08-13$3.50$3.501,500
2025-08-12$3.56$3.561,600
2025-08-11$3.58$3.581,900
2025-08-08$3.60$3.601,300
2025-08-07$3.52$3.522,900
2025-08-06$3.77$3.774,500
2025-08-05$3.85$3.851,000
2025-08-04$3.95$3.953,400
2025-08-01$3.82$3.823,800
2025-07-31$3.90$3.901,000
2025-07-30$3.80$3.802,800
2025-07-29$3.91$3.91700
2025-07-28$3.91$3.911,700
2025-07-25$3.90$3.901,100
2025-07-24$3.96$3.964,500
2025-07-23$4.15$4.158,300
2025-07-22$4.19$4.192,000
2025-07-21$4.19$4.193,600
2025-07-18$4.33$4.3310,300
2025-07-17$4.10$4.1019,800
2025-07-16$3.84$3.8419,600
2025-07-15$3.59$3.592,000
2025-07-14$3.62$3.624,100
2025-07-11$3.53$3.533,200
2025-07-10$3.51$3.517,200
2025-07-09$3.62$3.622,900
2025-07-08$3.65$3.652,500
2025-07-07$3.44$3.444,100
2025-07-03$3.41$3.410
2025-07-02$3.41$3.412,600
2025-07-01$3.43$3.431,200
2025-06-30$3.40$3.403,500
2025-06-27$3.34$3.34600
2025-06-26$3.37$3.37800
2025-06-25$3.35$3.351,400
2025-06-24$3.33$3.33700
2025-06-23$3.36$3.36800
2025-06-20$3.30$3.301,800
2025-06-18$3.49$3.494,000
2025-06-17$3.57$3.571,800
2025-06-16$3.68$3.681,400
2025-06-13$3.57$3.575,700
2025-06-12$3.62$3.623,600
2025-06-11$3.60$3.60300
2025-06-10$3.54$3.54300
2025-06-09$3.61$3.610
2025-06-06$3.61$3.613,300
2025-06-05$3.72$3.722,700
2025-06-04$3.72$3.724,600
2025-06-03$3.90$3.904,300
2025-06-02$3.65$3.652,800
2025-05-30$3.37$3.37800
2025-05-29$3.51$3.513,400
2025-05-28$3.41$3.41700
2025-05-27$3.34$3.341,400
2025-05-23$3.55$3.552,700
2025-05-22$3.61$3.611,000
2025-05-21$3.55$3.552,600
2025-05-20$3.48$3.482,200
2025-05-19$3.60$3.600
2025-05-16$3.60$3.603,000
2025-05-15$3.34$3.345,700
2025-05-14$3.46$3.468,900
2025-05-13$3.50$3.503,900
2025-05-12$3.46$3.468,900
2025-05-09$3.55$3.553,400
2025-05-08$3.38$3.385,500
2025-05-07$3.50$3.50600
2025-05-06$3.78$3.781,500
2025-05-05$3.70$3.709,700
2025-05-02$3.66$3.662,400
2025-05-01$3.75$3.752,600
2025-04-30$3.45$3.452,800
2025-04-29$3.51$3.519,600
2025-04-28$3.14$3.141,000
2025-04-25$3.22$3.222,500
2025-04-24$3.15$3.151,100
2025-04-23$3.11$3.118,800
2025-04-22$3.04$3.043,600
2025-04-21$3.05$3.052,000
2025-04-17$2.83$2.833,100
2025-04-16$2.82$2.823,500
2025-04-15$2.84$2.841,600
2025-04-14$2.91$2.911,600
2025-04-11$2.85$2.851,000
2025-04-10$2.81$2.814,400
2025-04-09$2.82$2.8236,700
2025-04-08$2.45$2.453,300
2025-04-07$2.43$2.433,100
2025-04-04$2.56$2.564,800
2025-04-03$2.72$2.725,400
2025-04-02$2.94$2.9416,900
2025-04-01$2.87$2.877,900
2025-03-31$2.82$2.821,700
2025-03-28$3.04$3.043,100
2025-03-27$3.08$3.08500
2025-03-26$3.21$3.212,500
2025-03-25$3.07$3.073,100
2025-03-24$3.22$3.2264,100
2025-03-21$3.20$3.2025,800
2025-03-20$3.43$3.4380,100
2025-03-19$4.35$4.35223,000
2025-03-18$3.33$3.3310,400
2025-03-17$3.18$3.1827,500
2025-03-14$3.29$3.2959,200
2025-03-13$3.11$3.11676,400
2025-03-12$2.69$2.693,400
2025-03-11$2.67$2.67900
2025-03-10$2.69$2.6911,900
2025-03-07$2.75$2.752,100
2025-03-06$2.72$2.726,400
2025-03-05$2.78$2.784,700
2025-03-04$2.70$2.702,000
2025-03-03$2.70$2.701,400
2025-02-28$2.83$2.833,300
2025-02-27$2.90$2.909,600
2025-02-26$2.81$2.814,800
2025-02-25$2.70$2.703,500
2025-02-24$2.85$2.85600
2025-02-21$2.72$2.727,800
2025-02-20$2.75$2.75600
2025-02-19$2.79$2.793,300
2025-02-18$2.73$2.732,600
2025-02-14$2.76$2.762,200
2025-02-13$2.83$2.8315,200
2025-02-12$2.78$2.783,500
2025-02-11$2.72$2.724,200
2025-02-10$2.72$2.728,100
2025-02-07$2.76$2.761,300
2025-02-06$2.67$2.671,900
2025-02-05$2.82$2.822,500
2025-02-04$2.87$2.8713,900
2025-02-03$2.60$2.6070,600
2025-01-31$2.70$2.701,400
2025-01-30$2.77$2.776,100
2025-01-29$2.71$2.713,100
2025-01-28$2.75$2.755,900
2025-01-27$2.77$2.773,100
2025-01-24$2.89$2.895,900
2025-01-23$2.88$2.881,800
2025-01-22$2.80$2.805,600
2025-01-21$2.94$2.9412,600
2025-01-17$3.00$3.005,400
2025-01-16$2.89$2.898,800
2025-01-15$2.97$2.974,900
2025-01-14$3.22$3.22700
2025-01-13$3.18$3.183,600
2025-01-10$3.40$3.405,100
2025-01-08$3.22$3.225,000
2025-01-07$3.43$3.434,700
2025-01-06$3.63$3.6315,800
2025-01-03$3.36$3.3677,400
2025-01-02$2.73$2.735,500