ANAPTYSBIO INC

Ticker: ANAB CUSIP: 032724106 Class: Common Stock

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

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

Q3 2019

Shares 576,205 Value ($000) $20,161 Avg Close $47.58 Range $34.51 - $57.82

Q2 2019

Shares 799,897 Value ($000) $45,130 Avg Close $72.00 Range $52.93 - $83.10

Q1 2019

Shares 830,160 Value ($000) $60,643 Avg Close $69.04 Range $59.82 - $75.99

Q4 2018

Shares 746,037 Value ($000) $47,590 Avg Close $74.37 Range $54.26 - $100.97

Q3 2018

Shares 609,939 Value ($000) $60,854 Avg Close $82.97 Range $67.91 - $110.00

Q2 2018

Shares 543,816 Value ($000) $38,633 Avg Close $83.89 Range $66.39 - $108.57

Q1 2018

Shares 459,950 Value ($000) $47,872 Avg Close $112.70 Range $91.01 - $134.00

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2019	576,205	$20,161	$47.58	$34.51 - $57.82
Q2 2019	799,897	$45,130	$72.00	$52.93 - $83.10
Q1 2019	830,160	$60,643	$69.04	$59.82 - $75.99
Q4 2018	746,037	$47,590	$74.37	$54.26 - $100.97
Q3 2018	609,939	$60,854	$82.97	$67.91 - $110.00
Q2 2018	543,816	$38,633	$83.89	$66.39 - $108.57
Q1 2018	459,950	$47,872	$112.70	$91.01 - $134.00