Insider Buying and Selling - Keutzer Timothy - Insider Drift

Spero Therapeutics, Inc. - SPRO

Officer

Chief Operating Officer

Direct Buys

0

$0

0 Shares

Direct Sells

5

($148,532)

-66,933 Shares

Indirect Buys

0

$0

0 Shares

Indirect Sells

0

$0

0 Shares

Monthly Values

Transaction	Filed	Type	Shares @ Price	Value	Balance ( Change % )	Ownership
02/06/2026	02/09/2026	Sell	-18,652 @ $2.36	($44,019)	742,506 (-2.45%)	Direct
02/04/2026	02/05/2026	Sell	-3,471 @ $2.24	($7,775)	761,158 (-0.45%)	Direct
02/03/2026	02/05/2026	Sell	-24,224 @ $2.14	($51,839)	764,629 (-3.07%)	Direct
02/02/2026	02/05/2026	Sell	-18,891 @ $2.20	($41,560)	788,853 (-2.34%)	Direct
08/28/2025	09/03/2025	Sell	-1,695 @ $1.97	($3,339)	739,744 (-0.23%)	Direct