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$SPRO All transactions

Spero Therapeutics, Inc.

▼ SELL

$ Value

$3K

Shares

1,695

Price

$2

Filed

Sep 3

Insider

Name

Keutzer Timothy

Title

Chief Operating Officer

CIK

0001798155

Roles

Officer

Transaction Details

Transaction Date

2025-08-28

Code

S

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

739,744

Footnotes

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 units ("RSUs") that were granted to the Reporting Person on August 26, 2021.

Filing Info

Accession No.

0000950170-25-112659

Form Type

4

Issuer CIK

0001701108

Keutzer Timothy's History

Date Ticker Type Value
2025-08-28 SPRO $3K

Other Insiders at SPRO (90d)

No other insider activity at this issuer in the last 90 days.