SPERO THERAPEUTICS INC

Ticker: SPRO CUSIP: 84833T103 Class: COM

Rockefeller Capital Management L.P.'s Holding History (CIK: 0001739439)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 200 Value ($000) $0 Avg Close $2.32 Range $1.89 - $2.75

Q3 2025

Shares 200 Value ($000) $0 Avg Close $2.20 Range $1.80 - $3.22

Q2 2021

Shares 10 Value ($000) $0 Avg Close $13.97 Range $11.75 - $15.94

Q1 2021

Shares 10 Value ($000) $0 Avg Close $17.60 Range $12.70 - $22.23

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	200	$0	$2.32	$1.89 - $2.75
Q3 2025	200	$0	$2.20	$1.80 - $3.22
Q2 2021	10	$0	$13.97	$11.75 - $15.94
Q1 2021	10	$0	$17.60	$12.70 - $22.23