DORCHESTER MINERALS LP

Ticker: DMLP CUSIP: 25820R105 Class: COM UNIT

SUMMITRY LLC's Holding History (CIK: 0001280043)

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

Q1 2015
Shares 9,200 Value ($000) $209 Avg Close — Range —
Q4 2014
Shares 9,200 Value ($000) $235 Avg Close — Range —
Q3 2014
Shares 9,200 Value ($000) $272 Avg Close — Range —
Q2 2014
Shares 9,200 Value ($000) $281 Avg Close — Range —
Q1 2014
Shares 10,306 Value ($000) $270 Avg Close — Range —
Q4 2013
Shares 10,442 Value ($000) $271 Avg Close — Range —
Q3 2013
Shares 10,419 Value ($000) $249 Avg Close — Range —
Q2 2013
Shares 10,400 Value ($000) $255 Avg Close — Range —