8-K - Spero Therapeutics, Inc. (0001701108) (Filer)
Published . Updated .
8-K - Spero Therapeutics filed an 8-K with the SEC on Oct 27 (a notice of a material company event).
Directly affected
- SPRO Spero Therapeutics-7.0% 30d
Named in this report.
Indirectly affected
- XLV Health Care Select Sector SPDR
Health Care Select Sector SPDR holds the health sector that Spero Therapeutics belongs to, so it often moves with news about it.
- LLY Eli Lilly and+12.6% 30d
Eli Lilly and is a peer of Spero Therapeutics in pharmaceutical preparations; rivals often move on the same news.
- JNJ Johnson & Johnson-0.2% 30d
Johnson & Johnson is a peer of Spero Therapeutics in pharmaceutical preparations; rivals often move on the same news.
- ABBV AbbVie+9.0% 30d
AbbVie is a peer of Spero Therapeutics in pharmaceutical preparations; rivals often move on the same news.
- MRK Merck-2.9% 14d
Merck is a peer of Spero Therapeutics in pharmaceutical preparations; rivals often move on the same news.
- ABT Abbott Laboratories-0.6% 30d
Abbott Laboratories is a peer of Spero Therapeutics in pharmaceutical preparations; rivals often move on the same news.
Price reaction, T-5 to T+3
| Ticker | T-5 | T-3 | T-1 | T0 | T+1 | T+2 | T+3 |
|---|---|---|---|---|---|---|---|
| SPRO | +3.54% | -1.77% | base | after close | after close | after close | after close |
| XLVNo price data for this ticker | — | — | — | — | — | — | — |
| LLYNo price data for this ticker | — | — | — | — | — | — | — |
| JNJNo price data for this ticker | — | — | — | — | — | — | — |
| ABBVNo price data for this ticker | — | — | — | — | — | — | — |
| MRKNo price data for this ticker | — | — | — | — | — | — | — |
| ABTNo price data for this ticker | — | — | — | — | — | — | — |
Closing-price change versus T-1, the last close before the story. T0 to T+3 fill in after each market close. Prices: Alpaca IEX.
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Filed: 2026-10-27 AccNo: 0001193125-26-434452 Size: 137 KB Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
Source: sec-edgar
Spero Therapeutics (SPRO) since “8-K - Spero Therapeutics, Inc. (0001701108) (Filer),” compared with the market
| Company | When | Move | Status |
|---|---|---|---|
| Spero Therapeutics (SPRO) | three days earlier | -1.77% | final price |
| Spero Therapeutics (SPRO) | five days earlier | +3.54% | final price |
Trades by members of Congress and officials in the stocks in this story
- Rep. Rohit Khanna bought Eli Lilly (LLY) (held by a spouse), worth $1,001 - $15,000 on 4 Sep 2026. That is 53 days before publication. Filed 7 Oct 2026. View the filing.
- Rep. Rohit Khanna bought Johnson & Johnson (JNJ) (held by a spouse), worth $1,001 - $15,000 on 25 Sep 2026. That is 32 days before publication. Filed 7 Oct 2026. View the filing.
- Rep. Lloyd Doggett bought Johnson & Johnson (JNJ), worth $1,001 - $15,000 on 8 Sep 2026. That is 49 days before publication. Filed 5 Oct 2026. View the filing.
- Rep. Rohit Khanna bought Johnson & Johnson (JNJ) (held by a spouse), worth $1,001 - $15,000 on 4 Sep 2026. That is 53 days before publication. Filed 7 Oct 2026. View the filing.
- Rep. Pete Sessions sold AbbVie (ABBV), worth $15,001 - $50,000 on 14 Sep 2026. That is 43 days before publication. Filed 18 Sep 2026. View the filing.
- Rep. Rohit Khanna sold AbbVie (ABBV) (held by a spouse), worth $1,001 - $15,000 on 4 Sep 2026. That is 53 days before publication. Filed 7 Oct 2026. View the filing.
- Donald J Trump, an executive branch official, bought AbbVie (ABBV), worth $50,001 - $100,000 on 31 Jul 2026. That is 88 days before publication. Filed 22 Sep 2026. View the filing.
- Rep. Maria Elvira Salazar sold Merck (MRK), worth $1,001 - $15,000 on 24 Sep 2026. That is 33 days before publication. Filed 7 Oct 2026. View the filing.
- Rep. Maria Elvira Salazar bought Merck (MRK), worth $15,001 - $50,000 on 19 Aug 2026. That is 69 days before publication. Filed 9 Sep 2026. View the filing.
- Donald J Trump, an executive branch official, sold Merck (MRK), worth $250,001 - $500,000 on 31 Jul 2026. That is 88 days before publication. Filed 22 Sep 2026. View the filing.
- Rep. Gilbert Cisneros bought Abbott Laboratories (ABT), worth $1,001 - $15,000 on 18 Sep 2026. That is 39 days before publication. Filed 12 Oct 2026. View the filing.
- Rep. Rohit Khanna bought Abbott Laboratories (ABT) (held by a spouse), worth $1,001 - $15,000 on 4 Sep 2026. That is 53 days before publication. Filed 7 Oct 2026. View the filing.
Public disclosure filings, not a recommendation. The filing link is the source document. News use of these reports still sits under 5 U.S.C. § 13107(c).
Who is named in “8-K - Spero Therapeutics, Inc. (0001701108) (Filer)”
Companies carried with this story
- SPRO Spero Therapeutics
In “8-K - Spero Therapeutics, Inc. (0001701108) (Filer),” Spero Therapeutics (SPRO) is linked, with no stored direction, high confidence. Reason on file: SEC 8-K filing -> direct issuer disclosure -> SPRO
How “8-K - Spero Therapeutics, Inc. (0001701108) (Filer)” reaches Spero Therapeutics (SPRO)
Spero Therapeutics (SPRO) is the company in “8-K - Spero Therapeutics, Inc. (0001701108) (Filer),” the 27 Oct 2026 this story story.
For Spero Therapeutics (SPRO), the reason on file says SEC 8-K filing -> direct issuer disclosure -> SPRO
Price levels for Spero Therapeutics (SPRO)
SPRO traded between 1.06 and 1.30 across 20 sessions. The latest close on file is 1.07.
How solid “8-K - Spero Therapeutics, Inc. (0001701108) (Filer)” looks
14 out of 100
“8-K - Spero Therapeutics, Inc. (0001701108) (Filer)” scores 14 out of 100. The score uses 1 sources, and 1 linked companies.