BLACKROCK SCIENCE & TECHNOLO

CUSIP: 09258G104 Class: SHS

BROWN BROTHERS HARRIMAN & CO's Holding History (CIK: 0000014661)

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

Q4 2018
Shares 4,000 Value ($000) $110 Avg Close — Range —
Q3 2018
Shares 4,000 Value ($000) $142 Avg Close — Range —