Frank E. Thomas - Jan 5, 2022 Form 4 Insider Report for Spero Therapeutics, Inc. (SPRO)

Role
Director
Signature
/s/ Tamara Joseph, Attorney-in-Fact for Frank E. Thomas
Stock symbol
SPRO
Transactions as of
Jan 5, 2022
Transactions value $
$19,992
Form type
4
Date filed
1/7/2022, 04:09 PM
Previous filing
Aug 18, 2021
Next filing
Apr 4, 2022

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction SPRO Stock Option (Right to Buy) Award $20K +2.21K $9.03 2.21K Jan 5, 2022 Common Stock 2.21K $13.19 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This stock option shall vest in four quarterly installments on the last day of each calendar quarter during the calendar year subject to the Reporting Person's continued service as a non-employee director.
F2 This stock option was issued to the Reporting Person, who elected to take stock options in lieu of $20,000 in cash compensation for services as a director, pursuant to the Issuer's non-employee director compensation policy.

Remarks:

Exhibit 24.1 - Power of Attorney