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SPRO

Spero Therapeutics, Inc. SEC filings
Pharmaceutical Preparations · Nasdaq · Incorporated in DE
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Filing history
2026-10-28
Employee stock plan shares S-8
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2026-10-27
Current report 8-K
Exec/director change
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2026-09-10
EFFECT EFFECT
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2026-08-28
Current report 8-K
Material agreementOther event
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2026-08-28
Shelf registration (future share sales) S-3
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2026-08-12
Current report 8-K
Earnings results
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2026-08-12
Quarterly report 10-Q
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2026-08-06
Insider trade 4
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2026-08-06
New insider's holdings 3
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2026-07-14
Current report 8-K
Material agreementNew debtReg FD disclosureOther event
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2026-06-25
Insider trade 4
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2026-06-25
Insider trade 4
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2026-06-25
Insider trade 4
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2026-06-25
Insider trade 4
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2026-06-25
Insider trade 4
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2026-06-25
Insider trade 4
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2026-06-25
Insider trade 4
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2026-06-25
Current report 8-K
Exec/director changeBylaws changeShareholder vote
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2026-06-23
Employee stock plan shares S-8
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2026-06-22
Current report 8-K
Reg FD disclosureOther event
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2026-05-13
Quarterly report 10-Q
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2026-05-13
Current report 8-K
Earnings results
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2026-05-06
Insider trade 4
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2026-04-27
Annual report to shareholders ARS
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2026-04-27
Proxy material DEFA14A
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2026-04-27
Proxy statement (shareholder vote) DEF 14A
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2026-04-13
PRE 14A PRE 14A
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2026-03-26
Current report 8-K
Earnings results
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2026-03-26
Annual report 10-K
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2026-02-09
Insider trade 4
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2026-02-09
Insider trade 4
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2026-02-05
Insider trade 4
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2026-02-04
Insider trade 4
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2026-01-30
Current report 8-K
Exec/director changeOther event
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2025-12-19
Current report 8-K
Other event
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2025-11-13
Current report 8-K
Earnings resultsReg FD disclosure
Filing ↗
2025-11-13
Quarterly report 10-Q
Filing ↗
2025-11-12
Insider trade 4
Filing ↗
2025-09-03
Insider trade 4
Filing ↗
2025-09-03
Insider trade 4
Filing ↗