Official SEC submissions

Spero Therapeutics SEC Filings

Spero Therapeutics (SPRO) SEC filings, periodic reports and insider submissions.

Direct answer

Spero Therapeutics's latest SEC filing is 8-K.

It was filed on August 28, 2026, and 40 recent filings are available.
Each row links directly to the SEC document and filing index.
Official SEC EDGAR submissions

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Recent SEC filings

8-K

Current report

Filed:

Report date:

8-K

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8-K

Current report

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Report date:

8-K

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10-Q

Periodic report

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Report date:

10-Q

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4

Insider transaction

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4

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8-K

Current report

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Report date:

8-K

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4

Insider transaction

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4

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4

Insider transaction

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Open SEC documentView filing index

4

Insider transaction

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4

Open SEC documentView filing index

4

Insider transaction

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4

Open SEC documentView filing index

4

Insider transaction

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4

Open SEC documentView filing index

4

Insider transaction

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4

Open SEC documentView filing index

4

Insider transaction

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4

Open SEC documentView filing index

8-K

Current report

Filed:

Report date:

8-K

Open SEC documentView filing index

8-K

Current report

Filed:

Report date:

8-K

Open SEC documentView filing index

10-Q

Periodic report

Filed:

Report date:

10-Q

Open SEC documentView filing index

8-K

Current report

Filed:

Report date:

8-K

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4

Insider transaction

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Report date:

4

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DEFA14A

Proxy statement

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DEFA14A

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DEF 14A

Proxy statement

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Report date:

DEF 14A

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8-K

Current report

Filed:

Report date:

8-K

Open SEC documentView filing index

10-K

Periodic report

Filed:

Report date:

10-K

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

8-K

Current report

Filed:

Report date:

8-K

Open SEC documentView filing index

8-K

Current report

Filed:

Report date:

8-K

Open SEC documentView filing index

8-K

Current report

Filed:

Report date:

8-K

Open SEC documentView filing index

10-Q

Periodic report

Filed:

Report date:

10-Q

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

10-Q

Periodic report

Filed:

Report date:

10-Q

Open SEC documentView filing index

8-K

Current report

Filed:

Report date:

8-K

Open SEC documentView filing index

8-K

Current report

Filed:

Report date:

8-K

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

4

Insider transaction

Filed:

Report date:

4

Open SEC documentView filing index

Verified data

Recent filing categories
4
Recent filings
40
SEC CIK
0001701108
Latest filing date
August 28, 2026

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