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Spero Therapeutics Announces Inducement Grant Under Nasdaq Listing Rule 5635(c)(4)

Key Takeaway: Spero Therapeutics announced the approval of 90,000 restricted stock unit awards for a new employee under its 2019 Inducement Equity Incentive Plan. This grant, approved by the Compensation Committee, is part of the company's strategy to attract talent in the clinical-stage biopharmaceutical sector. The RSUs will vest over four years, contingent on the employee's continued employment.

Market Sentiment Analysis

POSITIVE FACTORS

  • Spero Therapeutics is expanding its workforce with new hires.
  • The grant of RSUs demonstrates the company's commitment to attracting talent.
  • The 2019 Inducement Plan supports the growth of the company.

Full Press Release Details

CAMBRIDGE, Mass., Nov. 28, 2025 (GLOBE NEWSWIRE) --Spero Therapeutics, Inc. (Nasdaq: SPRO), a clinical-stage biopharmaceutical company focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on November 3, 2025, the Compensation Committee of Spero’s Board of Directors approved the grant of an aggregate of 90,000 restricted stock unit awards (RSUs) to one new employee under the Spero Therapeutics, Inc. 2019 Inducement Equity Incentive Plan, as amended (2019 Inducement Plan). The RSUs are being granted as an inducement material to Spero’s new employee in accordance with Nasdaq Listing Rule 5635(c)(4).
The 2019 Inducement Plan is used exclusively for the grant of equity awards to individuals who were not previously employees of Spero (or following a bona fide period of non-employment), as a material inducement for such individuals entering into employment with Spero, pursuant to Rule 5635(c)(4) of the Nasdaq Listing Rules.
The RSUs will vest in four equal annual installments beginning on December 1, 2025, subject to the employees‘ continued employment with Spero on such vesting dates. The RSUs are subject to the terms and conditions of the 2019 Inducement Plan and an RSU agreement covering the grant.
About Spero TherapeuticsSpero Therapeutics, headquartered in Cambridge, Massachusetts, is a clinical-stage biopharmaceutical company focused on identifying and developing novel treatments for rare diseases and MDR bacterial infections with high unmet need. For more information, visitwww.sperotherapeutics.com.

Investor Relations Contact:Shai Biran, PhDSpero TherapeuticsIR@Sperotherapeutics.com

Frequently Asked Questions

What is the purpose of the RSU grant?

The RSU grant aims to attract a new employee as part of Spero's growth strategy.

How many RSUs were granted?

Spero Therapeutics granted a total of 90,000 RSUs to the new employee.

When will the RSUs vest?

The RSUs will vest in four equal annual installments starting December 1, 2025.

What is the 2019 Inducement Plan?

The 2019 Inducement Plan is for granting equity awards to new employees as an inducement.

Last updated: Nov 28, 2025