NASDAQ:SPRO | Stock Price History | Spero 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
2026-07-20 to 2026-09-04
Data captured

Historical Stock Price

DateOpen priceExchange Volume
2026-09-04$1.2113,073
2026-09-03$1.234,584
2026-09-02$1.2413,399
2026-09-01$1.2217,411
2026-08-31$1.2312,986
2026-08-28$1.2117,071
2026-08-27$1.2231,202
2026-08-26$1.2213,423
2026-08-25$1.2445,829
2026-08-24$1.2222,677
2026-08-21$1.2230,356
2026-08-20$1.2434,499
2026-08-19$1.2131,826
2026-08-18$1.1926,447
2026-08-17$1.2226,481
2026-08-14$1.2651,058
2026-08-13$1.2884,577
2026-08-12$1.2359,981
2026-08-11$1.2329,593
2026-08-10$1.2517,006
2026-08-07$1.2721,002
2026-08-06$1.2443,609
2026-08-05$1.2542,784
2026-08-04$1.1637,542
2026-08-03$1.1847,416
2026-07-31$1.1933,251
2026-07-30$1.2146,757
2026-07-29$1.1854,219
2026-07-28$1.1783,669
2026-07-27$1.2168,153
2026-07-24$1.16268,131
2026-07-23$1.24169,153
2026-07-22$1.3865,414
2026-07-21$1.3977,493
2026-07-20$1.5279,730