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Insider trade

Spero Therapeutics (SPRO)See Remarks sold ~$63K

Esther Rajavelu, See Remarks at Spero Therapeutics, sold ~$63K of Spero Therapeutics shares.

~$63K
Approx. value · 25K sh @ $2.51
987K
Holds after · shares reported
Traded
May 4, 2026
Filed
May 7, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

  1. Mar 26, 2026Company filing · Form 8-K · ResultsReported its results
  2. May 4, 2026 · this disclosureInsiderOfficer sold ~$63K of SPRO shares in the open market

What came next

  1. May 13, 2026Company filing · Form 8-K · ResultsReported its results
  2. Jun 23, 2026Company filing · Form 8-K · Executive change, Bylaws or charterChanged a top executive or board member, and changed its bylaws, charter or fiscal year (and 1 more item)“of Certain Officers Approval of the 2026 Stock Incentive Plan At the 2026 Annual Meeting of Stockholders (the “Annual Meeting”) of Spero Therapeutics, Inc. (the “Company”) held on June 23, 2026, the Company’s stockholders approved the Spero Therapeutics, Inc. 2026 Stock Incentive Plan (the “2026 Plan”), which had previously been adopted by the Company’s board of directors (the “Board”), subject to stockholder…”
  3. Jul 8, 2026Company filing · Form 8-K · Material agreement, New debtSigned an important agreement, and took on new debt or obligations (and 2 more items)
  4. Aug 12, 2026Company filing · Form 8-K · ResultsReported its results
  5. Aug 28, 2026Company filing · Form 8-K · Material agreement, Other newsSigned an important agreement, and reported other company news
View the official recordSEC Form 4

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Spero Therapeutics

OQRO holds no insider, Congress, fund or contract record for Spero Therapeutics dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its SPRO page.

Other recent filings by Esther Rajavelu, See Remarks

The full history of Esther Rajavelu, See Remarks is on the profile page.

How this filing works

Other disclosures at Spero Therapeutics

Everything OQRO holds on this company is on its SPRO page.

This is one filing. OQRO holds the rest

Insider trades filed with the SEC, stock trades disclosed by members of Congress, fund holdings from 13F filings and federal contract awards, each one in plain words next to its official filing. On this page it opens why the trade stands out, what the company did around that time, the price since, and every field of the form.

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