🟢 Spero Therapeutics is trading 6.5% up in pre-market; no clear company-specific catalyst identified

Spero Therapeutics is trading at $1.14, up 6.52%, with no clear company-specific catalyst identified for the pre-market gain.

• The price compares with the previous close of $1.07.
• On October 26, Spero announced two leadership appointments and the COO’s retirement; the announcement did not link these changes to the share move.
• Supplied major-index moves were modest and do not clearly explain the increase.