Spero Therapeutics, Inc. Common Stock (SPRO)

$2.69 +6.52%

EARNINGS ANALYTICS

event_upcoming Est. Next Earnings: 2026-08-07 ESTIMATED

Spero Therapeutics, Inc. Common Stock (SPRO) has reported earnings 20 times since Aug 05, 2021. The stock moves an average of ±5.79% the day after reporting, closing higher 30.0% of the time. Its largest post-earnings gain was +13.37% (May 13, 2026) and its largest decline was -18.67% (Mar 31, 2022). The next earnings report is predicted for 2026-08-07 (estimated).

Earnings Price Reaction

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Beat Miss

Earnings Impact

Total Earnings

Avg Abs. Movement

±5.79%

Positive %

30.0%

Negative %

70.0%

Historical Earnings Statistics

Date	Timing	Open	High	Close	Volume	Movement %	SEC Filing
May 13, 2026	☽ POST	$2.50	$2.52	$2.43	28,909	+13.37%	open_in_new
Mar 26, 2026	☽ POST	$2.40	$2.47	$2.36	33,643	-1.69%	open_in_new
Nov 13, 2025	☽ POST	$2.64	$2.71	$2.46	20,367	-2.04%	open_in_new
Aug 12, 2025	☽ POST	$2.25	$2.37	$2.35	9,821	-18.05%	open_in_new
May 13, 2025	☽ POST	$0.66	$0.67	$0.67	3,985	+1.82%	open_in_new
Mar 27, 2025	☽ POST	$0.89	$0.89	$0.89	502	-13.96%	open_in_new
Nov 14, 2024	☽ POST	$1.30	$1.30	$1.24	14,972	-5.24%	open_in_new
Aug 05, 2024	☽ POST	$1.30	$1.34	$1.34	837	-3.73%	open_in_new
May 15, 2024	☽ POST	$1.60	$1.66	$1.63	3,208	-2.76%	open_in_new
Mar 13, 2024	☽ POST	$1.68	$1.70	$1.66	8,456	+4.82%	open_in_new
Nov 13, 2023	☽ POST	$1.09	$1.11	$1.11	1,055	-2.7%	open_in_new
Aug 10, 2023	☽ POST	$1.44	$1.47	$1.45	1,794	-3.1%	open_in_new
May 11, 2023	☽ POST	$1.92	$1.92	$1.91	1,128	-2.88%	open_in_new
Mar 30, 2023	☽ POST	$1.45	$1.46	$1.44	4,563	+1.74%	open_in_new
Nov 14, 2022	☽ POST	$2.01	$2.11	$1.99	22,813	-5.53%	open_in_new
Aug 10, 2022	☽ POST	$0.83	$0.85	$0.85	1,534	-8.18%	open_in_new
May 16, 2022	☽ POST	$1.68	$1.81	$1.70	10,038	-3.24%	open_in_new
Mar 31, 2022	☽ POST	$8.49	$8.79	$8.73	12,573	-18.67%	open_in_new
Nov 10, 2021	☽ POST	$17.12	$17.12	$16.71	2,194	+0.75%	open_in_new
Aug 05, 2021	☽ POST	$13.75	$14.19	$13.93	1,774	+1.58%	open_in_new

event

Earnings Count

Total earnings in dataset

trending_up

Avg Abs. Movement

±5.79%

Avg % price change on earnings

description

SEC Filings

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Browse all SEC filings

SEC Filing Types

Recent SEC Filings

2 most recent

Form	Date Filed	View on EDGAR
10-Q	20260513	open_in_new SEC.gov
8-K	20260513	open_in_new SEC.gov

Frequently asked about SPRO earnings

When does Spero Therapeutics, Inc. Common Stock report earnings next? expand_more

Spero Therapeutics, Inc. Common Stock (SPRO)'s next earnings date is estimated for 2026-08-07. This is a prediction based on its historical quarterly reporting pattern, not a company-confirmed date.

How much does SPRO stock move after earnings? expand_more

Over 20 reports, SPRO has moved an average of ±5.79% the session after earnings, closing higher 30.0% of the time.

What was SPRO's biggest post-earnings move? expand_more

SPRO's largest post-earnings gain on record was +13.37% on May 13, 2026, and its largest decline was -18.67% on Mar 31, 2022.

Where can I find Spero Therapeutics, Inc. Common Stock's SEC filings? expand_more

All of Spero Therapeutics, Inc. Common Stock's SEC filings — 10-K, 10-Q, 8-K and more — are listed in the SEC filings section on this page, each linking to the original document on SEC.gov.