BOYD GAMING CORP

Ticker: BYD CUSIP: 103304101 Class: Common Stock

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

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

Q4 2019

Shares 453,320 Value ($000) $13,572 Avg Close $26.95 Range $22.28 - $29.63

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	453,320	$13,572	$26.95	$22.28 - $29.63