BLACKSTONE GROUP L P

CUSIP: 09253U108 Class: COM UNIT LTD

Chesley Taft & Associates LLC's Holding History (CIK: 0001164632)

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

Q1 2019

Shares 36,575 Value ($000) $1,279 Avg Close — Range —

Q4 2018

Shares 35,675 Value ($000) $1,063 Avg Close — Range —

Q3 2018

Shares 89,950 Value ($000) $3,425 Avg Close — Range —

Q2 2018

Shares 89,750 Value ($000) $2,887 Avg Close — Range —

Q1 2018

Shares 89,350 Value ($000) $2,855 Avg Close — Range —

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	36,575	$1,279	—	—
Q4 2018	35,675	$1,063	—	—
Q3 2018	89,950	$3,425	—	—
Q2 2018	89,750	$2,887	—	—
Q1 2018	89,350	$2,855	—	—