WELLINGTON MANAGEMENT GROUP LLP

Position in KALU — Kaiser Aluminum Corp

CIK 902219 Boston, MA

Position in KALU

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$34,953,601

-$5,069,214 QoQ

Shares Held

178,672

-46.2% QoQ

Ownership

1.09%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#19

of 335 holders

Holding Since

Mar 2020

15 quarters on record

Voting authority Sole 0% Shared 86% None 14%

Basic Materials · as of Jun 30, 2026

WELLINGTON MANAGEMENT GROUP LLP holds $85,702,300 across 3 Aluminum names. KALU ranks #1 (40.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	KALU	Kaiser Aluminum Corp This page	178,672	$34,953,601
2	AA	Alcoa Corp	488,951	$25,493,904
3	CENX	Century Aluminum Co	548,898	$25,254,795

15 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$34,953,601	178,672	-46.2%	Shares	Defined	2026-08-14
2026-03-31	$40,022,815	332,112	-31.0%	Shares	Defined	2026-05-15
2025-12-31	$55,316,803	481,602	-4.1%	Shares	Defined	2026-02-17
2025-09-30	$38,768,731	502,446	+1.1%	Shares	Defined	2025-11-14
2025-06-30	$39,696,155	496,823	+9.4%	Shares	Defined	2025-08-14
2025-03-31	$27,528,388	454,114	+5.1%	Shares	Defined	2025-05-13
2024-12-31	$30,355,232	431,980	+103.6%	Shares	Defined	2025-02-12
2024-09-30	$15,385,333	212,153	+1.5%	Shares	Defined	2024-11-14
2024-06-30	$18,379,186	209,092	+56.0%	Shares	Defined	2024-08-14
2024-03-31	$11,977,366	134,035	+3510.9%	Shares	Defined	2024-05-15
2022-12-31	$281,963	3,712	-91.7%	Shares	Defined	2023-02-13
2020-12-31	$4,425,674	44,749	-23.3%	Shares	Defined	2021-02-12
2020-09-30	$3,124,885	58,311	-57.5%	Shares	Defined	2020-11-16
2020-06-30	$10,091,680	137,078	+1.6%	Shares	Defined	2020-08-14
2020-03-31	$9,342,961	134,858	—	Shares	Defined	2020-05-14
No filing history on record for this holder in this stock.