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$SPRO All transactions

Spero Therapeutics, Inc.

▼ SELL

$ Value

$44K

Shares

18,652

Price

$2

Filed

Feb 9

Insider

Name

Keutzer Timothy

Title

Chief Operating Officer

CIK

0001798155

Roles

Officer

Transaction Details

Transaction Date

2026-02-06

Code

S

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

742,506

Footnotes

Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. The sale occurred automatically to satisfy the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.

Filing Info

Accession No.

0001193125-26-043315

Form Type

4

Issuer CIK

0001701108

Keutzer Timothy's History

Date Ticker Type Value
2026-02-06 SPRO $44K
2026-02-04 SPRO $8K
2026-02-03 SPRO $52K
2026-02-02 SPRO A $0
2026-02-02 SPRO $42K
2026-02-02 SPRO A $0
2025-08-28 SPRO $3K

Other Insiders at SPRO (90d)

Insider Bought Sold Last
Keutzer Timothy
Chief Operating Officer
$101K 2026-02-04
Rajavelu Esther
See Remarks
$248K 2026-02-06