NASDAQ:SION | Stock Price History | Sionna 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
2025-02-07 to 2026-09-04
Data captured

Stock Price Chart

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

$4.27$7.09$11.75$19.49$32.32$53.592025-02-072026-08-27

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

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$6.7653,532
2026-09-03$7.3647,295
2026-09-02$6.6654,709
2026-09-01$5.9744,274
2026-08-31$5.8451,467
2026-08-28$6.0133,452
2026-08-27$6.06$6.06773,900$6.1326,387
2026-08-26$6.17$6.17923,800$6.2138,130
2026-08-25$6.25$6.251,973,200$5.7474,450
2026-08-24$5.59$5.591,773,800$5.28106,165
2026-08-21$5.29$5.291,937,800$5.5454,889
2026-08-20$5.52$5.521,749,500$6.2044,597
2026-08-19$6.25$6.251,873,700$6.06105,189
2026-08-18$5.94$5.942,057,600$5.7183,781
2026-08-17$5.91$5.912,985,500$6.5188,600
2026-08-14$6.46$6.462,877,400$6.30113,873
2026-08-13$6.54$6.545,485,900$6.25223,033
2026-08-12$6.25$6.259,438,000$4.98238,118
2026-08-11$5.10$5.1014,931,100$4.50341,264
2026-08-10$4.50$4.5038,644,400$4.89837,953
2026-08-07$51.04$51.04747,500$50.4863,117
2026-08-06$49.61$49.61778,300$46.8765,727
2026-08-05$47.34$47.34757,700$49.3435,021
2026-08-04$49.94$49.94913,100$49.5650,840
2026-08-03$49.26$49.26509,000$45.9251,514
2026-07-31$47.13$47.13392,300$46.4528,663
2026-07-30$46.78$46.78353,200$45.2718,675
2026-07-29$44.81$44.81368,300$46.5317,324
2026-07-28$46.55$46.55320,200$45.8919,071
2026-07-27$45.38$45.38403,800$47.0223,414
2026-07-24$45.70$45.70654,800$44.8745,971
2026-07-23$44.06$44.06811,100$45.4670,987
2026-07-22$45.03$45.03562,900$47.0058,043
2026-07-21$47.21$47.21598,100$46.4530,904
2026-07-20$45.69$45.69816,400$50.7245,290
2026-07-17$49.41$49.411,139,300
2026-07-16$45.29$45.291,096,300
2026-07-15$44.38$44.38522,000
2026-07-14$42.59$42.59276,000
2026-07-13$43.95$43.95415,300
2026-07-10$45.29$45.29371,000
2026-07-09$44.94$44.94755,200
2026-07-08$44.00$44.00573,800
2026-07-07$44.93$44.93664,400
2026-07-06$43.12$43.12255,800
2026-07-02$43.99$43.99328,700
2026-07-01$41.64$41.64438,300
2026-06-30$43.99$43.99682,800
2026-06-29$42.97$42.97320,000
2026-06-26$42.18$42.181,019,100
2026-06-25$42.77$42.77475,600
2026-06-24$41.09$41.09546,700
2026-06-23$39.87$39.87540,400
2026-06-22$38.83$38.83416,400
2026-06-18$37.30$37.30736,800
2026-06-17$36.73$36.73406,700
2026-06-16$34.75$34.75375,100
2026-06-15$36.00$36.00278,600
2026-06-12$35.92$35.92189,600
2026-06-11$36.05$36.05399,000
2026-06-10$34.03$34.03316,900
2026-06-09$33.69$33.69320,200
2026-06-08$33.51$33.51423,800
2026-06-05$35.37$35.37461,300
2026-06-04$37.78$37.78362,900
2026-06-03$36.70$36.70319,300
2026-06-02$36.48$36.48537,800
2026-06-01$40.90$40.90400,100
2026-05-29$42.82$42.82645,300
2026-05-28$42.80$42.80416,000
2026-05-27$43.43$43.43185,500
2026-05-26$42.88$42.88188,800
2026-05-22$41.13$41.13182,600
2026-05-21$41.75$41.75236,900
2026-05-20$39.50$39.50392,300
2026-05-19$37.68$37.68313,500
2026-05-18$39.24$39.24341,500
2026-05-15$40.22$40.22273,200
2026-05-14$42.77$42.77342,400
2026-05-13$43.12$43.12529,600
2026-05-12$40.94$40.94525,200
2026-05-11$45.95$45.95670,700
2026-05-08$44.23$44.23405,300
2026-05-07$43.31$43.31777,600
2026-05-06$43.29$43.29311,300
2026-05-05$40.97$40.97321,300
2026-05-04$40.45$40.45341,500
2026-05-01$39.15$39.15212,700
2026-04-30$38.70$38.70241,700
2026-04-29$37.43$37.43317,700
2026-04-28$39.59$39.59404,700
2026-04-27$39.21$39.21623,700
2026-04-24$38.11$38.11518,000
2026-04-23$38.35$38.35449,500
2026-04-22$43.20$43.20363,500
2026-04-21$41.79$41.79366,800
2026-04-20$42.64$42.64448,000
2026-04-17$43.54$43.54508,800
2026-04-16$45.24$45.24817,600
2026-04-15$45.09$45.09768,500