CHICAGO TRUST Co NA

Bank

Position in BRK-B — Berkshire Hathaway Inc

CIK 1601539 GRAYSLAKE, IL

Back to BRK-B Full portfolio

Position in BRK-B

as of Jun 30, 2026 · filed Jul 16, 2026 Compact

Position Value

$4,585,073

-$2,665,937 QoQ

Shares Held

9,163

+0.2% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.80%

of 13F equity value

Holder Rank

#1,958

of 4,965 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 86% Shared 4% None 9%

Common Shares in BRK-B Over Time

Shares Held

Position Value (USD)

Position in Insurance - Diversified

Financial Services · as of Jun 30, 2026

CHICAGO TRUST Co NA holds $6,128,705 across 3 Insurance - Diversified names. BRK-B ranks #1 (74.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	BRK-B	Berkshire Hathaway Inc This page	9,163	$4,585,073
2	ACGL	Arch Capital Group Ltd.	8,613	$835,977
3	HIG	Hartford Insurance Group, Inc.	5,340	$707,655

All Filings in BRK-B

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50 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$4,585,073	9,163	+0.3%	Shares	Sole	2026-07-16
2026-03-31 BRK-A	$2,872,560	4	0.0%	Shares	Sole	2026-04-24
2026-03-31	$4,378,450	9,137	-23.2%	Shares	Sole	2026-04-24
2025-12-31 BRK-A	$3,019,200	4	0.0%	Shares	Sole	2026-02-17
2025-12-31	$5,983,042	11,903	-3.3%	Shares	Sole	2026-02-17
2025-09-30 BRK-A	$3,016,800	4	0.0%	Shares	Other	2025-10-10
2025-09-30	$6,189,231	12,311	-0.4%	Shares	Sole	2025-10-10
2025-06-30 BRK-A	$2,915,200	4	0.0%	Shares	Sole	2025-07-14
2025-06-30	$6,006,545	12,365	+57.5%	Shares	Sole	2025-07-14
2025-03-31 BRK-A	$3,193,768	4	0.0%	Shares	Sole	2025-04-14
2025-03-31	$4,182,350	7,853	-5.1%	Shares	Sole	2025-04-14
2024-12-31 BRK-A	$2,723,680	4	0.0%	Shares	Sole	2025-01-13
2024-12-31	$3,751,797	8,277	-6.5%	Shares	Sole	2025-01-13
2024-09-30 BRK-A	$2,764,720	4	0.0%	Shares	Sole	2024-10-10
2024-09-30	$4,073,300	8,850	+2.0%	Shares	Sole	2024-10-10
2024-06-30 BRK-A	$2,448,964	4	0.0%	Shares	Sole	2024-07-11
2024-06-30	$3,528,176	8,673	-8.7%	Shares	Sole	2024-07-11
2024-03-31 BRK-A	$2,537,760	4	0.0%	Shares	Sole	2024-04-12
2024-03-31	$3,994,939	9,500	-7.6%	Shares	Sole	2024-04-12
2023-12-31 BRK-A	$2,170,500	4	-20.0%	Shares	Sole	2024-01-16
2023-12-31	$3,667,534	10,283	-9.2%	Shares	Sole	2024-01-16
2023-09-30 BRK-A	$2,657,385	5	0.0%	Shares	Sole	2023-10-27
2023-09-30	$3,968,198	11,328	+0.7%	Shares	Sole	2023-10-27
2023-06-30 BRK-A	$2,589,050	5	0.0%	Shares	Sole	2023-07-19
2023-06-30	$3,836,932	11,252	+0.8%	Shares	Sole	2023-07-19
2023-03-31 BRK-A	$2,328,000	5	0.0%	Shares	Sole	2023-04-11
2023-03-31	$3,445,254	11,158	-3.6%	Shares	Sole	2023-04-11
2022-12-31 BRK-A	$2,343,555	5	0.0%	Shares	Sole	2023-01-12
2022-12-31	$3,574,590	11,572	-6.5%	Shares	Sole	2023-01-12
2022-09-30 BRK-A	$2,032,350	5	0.0%	Shares	Sole	2022-10-13
2022-09-30	$3,305,707	12,380	-2.4%	Shares	Sole	2022-10-13
2022-06-30 BRK-A	$2,044,750	5	0.0%	Shares	Sole	2022-08-03
2022-06-30	$3,461,893	12,680	-3.8%	Shares	Sole	2022-08-03
2022-03-31 BRK-A	$2,644,605	5	0.0%	Shares	Sole	2022-04-12
2022-03-31	$4,652,412	13,183	-17.2%	Shares	Sole	2022-04-12
2021-12-31 BRK-A	$2,253,310	5	0.0%	Shares	Sole	2022-01-18
2021-12-31	$4,763,369	15,931	-3.1%	Shares	Sole	2022-01-18
2021-09-30 BRK-A	$2,056,895	5	0.0%	Shares	Sole	2021-10-13
2021-09-30	$4,486,859	16,439	+3.1%	Shares	Sole	2021-10-13
2021-06-30 BRK-A	$2,093,005	5	+400.0%	Shares	Sole	2021-07-21
2021-06-30	$4,430,322	15,941	+2.4%	Shares	Sole	2021-07-21
2021-03-31 BRK-A	$385,702	1	0.0%	Shares	Sole	2021-04-12
2021-03-31	$3,978,689	15,574	-0.9%	Shares	Sole	2021-04-12
2020-12-31 BRK-A	$347,815	1	0.0%	Shares	Sole	2021-01-28
2020-12-31	$3,645,691	15,723	-0.1%	Shares	Sole	2021-01-28
2020-09-30 BRK-A	$320,001	1	0.0%	Shares	Sole	2020-10-08
2020-09-30	$3,351,674	15,740	+4.5%	Shares	Sole	2020-10-08
2020-06-30 BRK-A	$267,300	1	0.0%	Shares	Sole	2020-07-13
2020-06-30	$2,688,538	15,061	—	Shares	Sole	2020-07-13
2020-03-31 BRK-A	$272,000	1	—	Shares	Sole	2020-04-07
No filing history on record for this holder in this stock.