DECIPHERA PHARMACEUTICALS IN

CUSIP: 24344T101 Class: Common Stock

VIKING GLOBAL INVESTORS LP's Holding History (CIK: 0001103804)

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

Q3 2018
Shares 735,898 Value ($000) $28,494 Avg Close — Range —
Q2 2018
Shares 1,398,791 Value ($000) $55,042 Avg Close — Range —
Q1 2018
Shares 2,058,842 Value ($000) $41,259 Avg Close — Range —
Q4 2017
Shares 2,394,625 Value ($000) $54,286 Avg Close — Range —
Q3 2017
Shares 2,491,542 Value ($000) $47,314 Avg Close — Range —