SPERO THERAPEUTICS INC

Ticker: SPRO CUSIP: 84833T103 Class: COM

BlackRock, Inc.'s Holding History (CIK: 0002012383)

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

Q4 2025

Shares 433,616 Value ($000) $1,010 Avg Close $2.32 Range $1.89 - $2.75

Q3 2025

Shares 434,768 Value ($000) $817 Avg Close $2.20 Range $1.80 - $3.22

Q2 2025

Shares 434,768 Value ($000) $1,261 Avg Close $1.44 Range $0.51 - $3.09

Q1 2025

Shares 482,082 Value ($000) $347 Avg Close $0.84 Range $0.70 - $1.13

Q4 2024

Shares 485,352 Value ($000) $500 Avg Close $1.19 Range $0.92 - $1.36

Q3 2024

Shares 484,820 Value ($000) $650 Avg Close $1.34 Range $1.15 - $1.53

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	433,616	$1,010	$2.32	$1.89 - $2.75
Q3 2025	434,768	$817	$2.20	$1.80 - $3.22
Q2 2025	434,768	$1,261	$1.44	$0.51 - $3.09
Q1 2025	482,082	$347	$0.84	$0.70 - $1.13
Q4 2024	485,352	$500	$1.19	$0.92 - $1.36
Q3 2024	484,820	$650	$1.34	$1.15 - $1.53