WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Position in ALK — Alaska Air Group, Inc.

CIK 1644956 CHICAGO, IL

Position in ALK

as of Mar 31, 2026 · filed May 8, 2026 Compact

Position Value

$9,496,264

-$17,420,322 QoQ

Shares Held

258,191

-51.8% QoQ

Ownership

0.232%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2021

19 quarters on record

Voting authority Sole 69.2715857640274.ToString("F0")% Shared 0.ToString("F0")% None 30.728414235972597.ToString("F0")%

Industrials · as of Mar 31, 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $89,705,280 across 4 Airlines names. ALK ranks #4 (10.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	LTM	Latam Airlines Group S.A.	881,457	$43,579,234
2	RYAAY	Ryanair Holdings PLC	420,246	$24,290,218
3	SKYW	Skywest Inc	134,374	$12,339,564
4	ALK	Alaska Air Group, Inc. This page	258,191	$9,496,264

19 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$9,496,264	258,191	-51.8%	Shares	Sole	2026-05-08
2025-12-31	$26,916,586	535,121	-9.3%	Shares	Sole	2026-02-09
2025-09-30	$29,384,188	590,281	-5.7%	Shares	Sole	2025-11-12
2025-06-30	$30,962,802	625,764	+13557.0%	Shares	Sole	2025-07-29
2025-03-31	$225,526	4,582	-27.4%	Shares	Sole	2025-05-09
2024-12-31	$408,443	6,308	-44.3%	Shares	Sole	2025-02-10
2024-09-30	$511,822	11,321	-1.3%	Shares	Sole	2024-11-08
2024-06-30	$463,388	11,470	0.0%	Shares	Sole	2024-08-08
2024-03-31	$493,095	11,470	+4.0%	Shares	Sole	2024-05-08
2023-12-31	$431,098	11,034	+23.6%	Shares	Sole	2024-02-09
2023-09-30	$330,976	8,926	+57.5%	Shares	Sole	2023-11-09
2023-06-30	$301,424	5,668	-0.3%	Shares	Sole	2023-08-11
2023-03-31	$238,458	5,683	+0.2%	Shares	Sole	2023-05-12
2022-12-31	$243,469	5,670	+0.4%	Shares	Sole	2023-02-09
2022-09-30	$221,158	5,649	+9.6%	Shares	Sole	2022-11-09
2022-06-30	$206,497	5,156	-44.4%	Shares	Sole	2022-08-10
2022-03-31	$537,868	9,272	+16.9%	Shares	Sole	2022-05-11
2021-12-31	$413,309	7,933	+65.1%	Shares	Sole	2022-02-14
2021-09-30	$281,631	4,806	—	Shares	Sole	2021-11-10
No filing history on record for this holder in this stock.