ARENA PHARMACEUTICALS INC

CUSIP: 040047607 Class: COMMON STOCK

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

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

Q4 2021
Shares 435,870 Value ($000) $40,510 Avg Close — Range —
Q3 2021
Shares 491,800 Value ($000) $29,287 Avg Close — Range —
Q2 2021
Shares 496,800 Value ($000) $33,882 Avg Close — Range —
Q1 2021
Shares 504,090 Value ($000) $34,979 Avg Close — Range —
Q4 2020
Shares 511,500 Value ($000) $39,299 Avg Close — Range —
Q3 2020
Shares 530,700 Value ($000) $39,691 Avg Close — Range —
Q2 2020
Shares 554,570 Value ($000) $34,910 Avg Close — Range —
Q1 2020
Shares 580,000 Value ($000) $24,360 Avg Close — Range —
Q4 2019
Shares 1,291,000 Value ($000) $58,637 Avg Close — Range —
Q3 2019
Shares 1,366,000 Value ($000) $62,522 Avg Close — Range —
Q2 2019
Shares 1,525,200 Value ($000) $89,422 Avg Close — Range —
Q1 2019
Shares 1,462,200 Value ($000) $65,550 Avg Close — Range —
Q4 2018
Shares 1,464,000 Value ($000) $57,023 Avg Close — Range —
Q3 2018
Shares 988,399 Value ($000) $45,486 Avg Close — Range —