Ankit Mahadevia - Aug 28, 2025 Form 4 Insider Report for Spero Therapeutics, Inc. (SPRO)

Role
Director
Signature
/s/ Maegan Deare, Attorney-in-Fact for Ankit Mahadevia
Stock symbol
SPRO
Transactions as of
Aug 28, 2025
Transactions value $
-$12,947
Form type
4
Date filed
9/3/2025, 06:04 AM
Previous filing
Jun 16, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Mahadevia Ankit Director C/O SPERO THERAPEUTICS, INC., 675 MASSACHUSETTS AVENUE, 14TH FLOOR, CAMBRIDGE /s/ Maegan Deare, Attorney-in-Fact for Ankit Mahadevia 2025-09-02 0001720974

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SPRO Common Stock Sale -$12.9K -6.57K -0.93% $1.97 703K Aug 28, 2025 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The reported transaction is a sale of common stock effected to cover tax withholding obligations pursuant to a "sell to cover" provision included in each RSU Agreement in connection with the vesting of restricted stock unit ("RSUs") that were granted to the Reporting Person on August 26, 2021.
F2 Amount includes 65,817 shares of common stock held by the Mahadevia-Mehta Family Trust, of which the Reporting Person is a trustee.