UNION PAC CORP

Ticker: UNP CUSIP: 907818108 Class: Common Stock

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

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

Q4 2017

Shares 291,533 Value ($000) $39,095 Avg Close $100.79 Range $90.65 - $114.32

Q1 2017

Shares 570,590 Value ($000) $60,437 Avg Close $87.64 Range $82.97 - $91.31

Q4 2016

Shares 2,099,301 Value ($000) $217,656 Avg Close $80.32 Range $70.95 - $87.41

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	291,533	$39,095	$100.79	$90.65 - $114.32
Q1 2017	570,590	$60,437	$87.64	$82.97 - $91.31
Q4 2016	2,099,301	$217,656	$80.32	$70.95 - $87.41