MISSION WEST PROPERTIES

CUSIP: 605203108 Class: COMMON STOCK

TEACHERS INSURANCE & ANNUITY ASSOCIATION OF AMERICA's Holding History (CIK: 0000315038)

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

Q1 2006
Shares 100,000 Value ($000) $1,175 Avg Close — Range —
Q4 2005
Shares 100,000 Value ($000) $974 Avg Close — Range —
Q3 2005
Shares 150,000 Value ($000) $1,506 Avg Close — Range —
Q2 2005
Shares 150,000 Value ($000) $1,541 Avg Close — Range —
Q1 2005
Shares 150,000 Value ($000) $1,590 Avg Close — Range —
Q4 2004
Shares 75,000 Value ($000) $1,596 Avg Close — Range —
Q3 2004
Shares 150,000 Value ($000) $1,553 Avg Close — Range —
Q2 2004
Shares 150,000 Value ($000) $1,817 Avg Close — Range —
Q1 2004
Shares 200,000 Value ($000) $2,650 Avg Close — Range —
Q4 2003
Shares 200,000 Value ($000) $2,590 Avg Close — Range —
Q3 2003
Shares 290,000 Value ($000) $3,584 Avg Close — Range —
Q2 2003
Shares 290,000 Value ($000) $3,297 Avg Close — Range —
Q1 2003
Shares 290,000 Value ($000) $2,726 Avg Close — Range —
Q4 2002
Shares 290,000 Value ($000) $2,871 Avg Close — Range —
Q3 2002
Shares 290,000 Value ($000) $3,213 Avg Close — Range —
Q2 2002
Shares 240,500 Value ($000) $2,932 Avg Close — Range —
Q1 2002
Shares 240,500 Value ($000) $3,151 Avg Close — Range —