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BRK.B

Insider Trades

Filed	Insider	Role	Type	A/D	Shares	Price
6 May 2026	O'Sullivan Michael J.	See Remarks	P-Purchase	Acquired	483	$467.13
6 May 2026	O'Sullivan Michael J.	See Remarks	P-Purchase	Acquired	53	$470.22
5 May 2026	O'Sullivan Michael J.	See Remarks		Disposed	0	$0.00
23 Jun 2021	Abel Gregory	director, officer: Vice Chairman	J-Other	Acquired	2,289	$276.82
23 Jun 2021	Abel Gregory

Congressional Trades

Senate

Disclosed	Senator	Office	Type	Amount
29 Jan 2026	Tina Smith	Tina Smith	Sale (Partial)	$100,001 - $250,000
29 Jan 2026	Tina Smith	Tina Smith	Sale (Partial)	$100,001 - $250,000
20 Nov 2025	Markwayne Mullin	Markwayne Mullin	Sale (Full)

House

Disclosed	Representative	Office	Type	Amount
31 Mar 2026	Mark Alford	Mark Alford	Sale (Partial)	$1,001 - $15,000
31 Mar 2026	Mark Alford	Mark Alford	Sale (Partial)	$1,001 - $15,000
5 Oct 2025	Sheri Biggs	Sheri Biggs	Sale (Full)	$15,001 - $50,000
3 Oct 2025	Ro Khanna	Ro Khanna	Purchase	$1,001 - $15,000
12 Sept 2025	Gilbert Cisneros	Gilbert Cisneros	Sale (Partial)	$1,001 - $15,000
12 Sept 2025	Valerie Hoyle	Valerie Hoyle	Purchase	$1,001 - $15,000
12 Sept 2025	Valerie Hoyle	Valerie Hoyle	Sale (Partial)	$1,001 - $15,000
12 Sept 2025	Valerie Hoyle	Valerie Hoyle	Sale (Partial)	$1,001 - $15,000
13 Aug 2025	Lisa McClain	Lisa McClain	Sale (Partial)	$1,001 - $15,000
13 Aug 2025	Lisa McClain	Lisa McClain	Purchase	$1,001 - $15,000