BLACK STONE MINERALS L P

Ticker: BSM CUSIP: 09225M101 Class: COM UNIT

Private Wealth Partners, LLC's Holding History (CIK: 0001335851)

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

Q1 2020
Shares 15,000 Value ($000) $70 Avg Close — Range —
Q4 2019
Shares 153,650 Value ($000) $1,954 Avg Close — Range —
Q3 2019
Shares 156,150 Value ($000) $2,224 Avg Close — Range —
Q2 2019
Shares 151,150 Value ($000) $2,343 Avg Close — Range —
Q1 2019
Shares 151,150 Value ($000) $2,666 Avg Close — Range —
Q4 2018
Shares 128,200 Value ($000) $1,985 Avg Close — Range —
Q3 2018
Shares 85,500 Value ($000) $1,557 Avg Close — Range —
Q2 2018
Shares 78,000 Value ($000) $1,442 Avg Close — Range —
Q1 2018
Shares 75,500 Value ($000) $1,250 Avg Close — Range —
Q4 2017
Shares 25,000 Value ($000) $448 Avg Close — Range —
Q3 2017
Shares 25,000 Value ($000) $433 Avg Close — Range —
Q2 2017
Shares 25,000 Value ($000) $394 Avg Close — Range —