QUIDEL CORP

CUSIP: 74838J101 Class: COMMON STOCK

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q3 2020
Shares 17,322 Value ($000) $3,800 Avg Close — Range —
Q2 2020
Shares 546,675 Value ($000) $122,313 Avg Close — Range —