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7- 9.11Pre-market26.09.11 13:15filedEFFECTOther#●●●
Spero Therapeutics, Inc.
Spero Therapeutics, Inc. received SEC effectiveness approval for its registration statement (File No. 333-298641) on September 10, 2026. This filing confirms the completion of the legal process required for the issuance and sale of the securities.…more
$1.11+0.23%vs prev closeDetected5m · 30m · 60m · Next dayPLUSView filingShare
- 8.28After-hours26.08.29 06:258-KKey event
Spero Therapeutics, Inc.
On August 28, 2026, Spero Therapeutics entered into an Open Market Sale Agreement with Jefferies LLC to offer and sell up to $100 million of its common stock. Concurrently, the company terminated its previous $75 million equity sales agreement with Cantor Fitzgerald & Co., effective immediately.…more
$1.11+0.23%vs prev closeView filingShare - 8.28After-hours26.08.29 06:04S-3Offering
Spero Therapeutics, Inc.
Spero Therapeutics has filed a shelf registration statement with the SEC to offer up to $300 million in aggregate securities, including debt, common stock, and preferred stock. Of this total, $100 million of common stock may be sold from time to time through a sales agreement with Jefferies LLC.…more
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News
GlobeNewswire- 10.15After-hours26.10.16 05:05#●●●#●●●
Spero Therapeutics to Participate in Chardan Healthcare Conference
Spero Therapeutics announced its participation in the 10th Annual Chardan Healthcare Conference for a fireside chat and investor meetings. This event participation does not provide immediate material impact on the company's stock price.…more
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- 10.2After-hours26.10.03 05:05
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Spero Therapeutics has granted restricted stock units and stock options to new employees as a material inducement for their employment. This action follows standard Nasdaq listing rules for equity-based compensation.…more
$1.11+0.23%vs prev close - 9.2After-hours26.09.03 05:01
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Spero Therapeutics announced that its leadership will present at the upcoming H.C. Wainwright 28th Annual Global Healthcare Conference. This event serves as a standard investor relations activity and does not provide immediate material impact on the stock price.…more
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