CARIBOU BIOSCIENCES INC

Ticker: CRBU CUSIP: 142038108 Class: COM

Keystone Financial Group's Holding History (CIK: 0001729299)

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

Q4 2025

Shares 80,475 Value ($000) $128 Avg Close $2.10 Range $1.55 - $3.54

Q2 2025

Shares 63,975 Value ($000) $81 Avg Close $0.98 Range $0.66 - $1.44

Q1 2025

Shares 56,400 Value ($000) $52 Avg Close $1.30 Range $0.88 - $2.04

Q4 2024

Shares 45,400 Value ($000) $72 Avg Close $2.01 Range $1.54 - $3.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	80,475	$128	$2.10	$1.55 - $3.54
Q2 2025	63,975	$81	$0.98	$0.66 - $1.44
Q1 2025	56,400	$52	$1.30	$0.88 - $2.04
Q4 2024	45,400	$72	$2.01	$1.54 - $3.00