MICREL INC

CUSIP: 594793101 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q2 2015
Shares 3,650,190 Value ($000) $50,738 Avg Close — Range —
Q1 2015
Shares 3,723,400 Value ($000) $56,149 Avg Close — Range —
Q4 2014
Shares 3,508,599 Value ($000) $50,910 Avg Close — Range —
Q3 2014
Shares 3,723,599 Value ($000) $44,795 Avg Close — Range —
Q2 2014
Shares 3,528,859 Value ($000) $39,805 Avg Close — Range —
Q1 2014
Shares 3,446,839 Value ($000) $38,191 Avg Close — Range —
Q4 2013
Shares 1,799,240 Value ($000) $17,759 Avg Close — Range —