ADVERUM BIOTECHNOLOGIES INC

CUSIP: 00773U108 Class: Common Stock

PRIMECAP MANAGEMENT CO/CA/'s Holding History (CIK: 0000763212)

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

Q3 2019
Shares 455,000 Value ($000) $2,480 Avg Close — Range —
Q2 2019
Shares 1,082,000 Value ($000) $12,865 Avg Close — Range —
Q1 2019
Shares 1,052,000 Value ($000) $5,512 Avg Close — Range —
Q4 2018
Shares 1,052,000 Value ($000) $3,314 Avg Close — Range —
Q3 2018
Shares 835,100 Value ($000) $5,052 Avg Close — Range —
Q2 2018
Shares 503,400 Value ($000) $2,668 Avg Close — Range —
Q1 2018
Shares 503,400 Value ($000) $2,920 Avg Close — Range —
Q4 2017
Shares 503,400 Value ($000) $1,762 Avg Close — Range —
Q3 2017
Shares 484,500 Value ($000) $1,768 Avg Close — Range —
Q2 2017
Shares 490,700 Value ($000) $1,227 Avg Close — Range —
Q1 2017
Shares 440,400 Value ($000) $1,189 Avg Close — Range —
Q4 2016
Shares 425,600 Value ($000) $1,234 Avg Close — Range —
Q3 2016
Shares 426,300 Value ($000) $1,752 Avg Close — Range —
Q2 2016
Shares 423,900 Value ($000) $1,340 Avg Close — Range —