Understand Stock

$BRK-B

$511.54 +$1.86 (0.36%)

Deep Research with AI Research

Overview

$BRK-B Overview Financials SEC Filings Executives News

Specialized Tools

Valuations P Insider Transactions P Congressional Trades P

Insider Transactions

Insider Transaction Summary

CHARLES T MUNGER

4,033 shares

Net: 0 B/S: -

CHARLOTTE GUYMAN

2,888 shares

Net: +516 B/S: ∞

RONALD L OLSON

1,235 shares

Net: 0 B/S: -

WARREN E BUFFETT

1,162 shares

Net: +1,218,692 B/S: ∞

Michael J. O'Sullivan

610 shares

Net: +483 B/S: ∞

Ajit Jain

330 shares

Net: -17,086 B/S: -

Gregory E. Abel

229 shares

Net: +1 B/S: ∞

Gregory Abel

151 shares

Net: 0 B/S: -

Susan A. Buffett

24 shares

Net: 0 B/S: -

MERYL B WITMER

2 shares

Net: 0 B/S: -

DAVID S GOTTESMAN

0 shares

Net: 0 B/S: -

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
CHARLES T MUNGER	4,033	0	-
CHARLOTTE GUYMAN	2,888	+516	∞
RONALD L OLSON	1,235	0	-
WARREN E BUFFETT	1,162	+1,218,692	∞
Michael J. O'Sullivan	610	+483	∞
Ajit Jain	330	-17,086	-
Gregory E. Abel	229	+1	∞
Gregory Abel	151	0	-
Susan A. Buffett	24	0	-
MERYL B WITMER	2	0	-
DAVID S GOTTESMAN	0	0	-

Individual Transactions

May 22, 2026

WARREN E BUFFETT

Gift

Change: -160

Price: $0.00

Shares: 1,162

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
WARREN E BUFFETT	May 26	Gift (G) Non-Market Transfer	1,162	-160	$0.00	-$0

May 18, 2026

WARREN E BUFFETT

Derivative Conversion

Change: +37,500

Price: $0.00

Shares: 38,614

Value: +$0

WARREN E BUFFETT

Gift

Change: -18,646

Price: $0.00

Shares: 19,968

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
WARREN E BUFFETT	May 20	Derivative Conversion (C) Derivative Exercise	38,614	+37,500	$0.00	+$0
WARREN E BUFFETT	May 20	Gift (G) Non-Market Transfer	19,968	-18,646	$0.00	-$0

May 14, 2026

CHARLOTTE GUYMAN

Gift

Change: -574

Price: $0.00

Shares: 2,888

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
CHARLOTTE GUYMAN	May 18	Gift (G) Non-Market Transfer	2,888	-574	$0.00	-$0

May 06, 2026

Michael J. O'Sullivan

Open Market Purchase

Change: +483

Price: $467.13

Shares: 610

Value: +$225,623

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Michael J. O'Sullivan	May 06	Open Market Purchase (P) Market Purchase	610	+483	$467.13	+$225,623

March 27, 2026

Ajit Jain

Gift

Change: -22

Price: $0.00

Shares: 330

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Ajit Jain	Mar 27	Gift (G) Non-Market Transfer	330	-22	$0.00	-$0

March 17, 2026

WARREN E BUFFETT

Gift

Change: -2

Price: $0.00

Shares: 196,315

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
WARREN E BUFFETT	Mar 19	Gift (G) Non-Market Transfer	196,315	-2	$0.00	-$0

March 04, 2026

Gregory E. Abel

Open Market Purchase

Change: +1

Price: $725210.20

Shares: 229

Value: +$725,210

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Gregory E. Abel	Mar 05	Open Market Purchase (P) Market Purchase	229	+1	$725210.20	+$725,210

November 10, 2025

WARREN E BUFFETT

Gift

Change: -1,500,000

Price: $0.00

Shares: 1,201,114

Value: -$0

WARREN E BUFFETT

Derivative Conversion

Change: +2,700,000

Price: $0.00

Shares: 2,701,114

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
WARREN E BUFFETT	Nov 12	Gift (G) Non-Market Transfer	1,201,114	-1,500,000	$0.00	-$0
WARREN E BUFFETT	Nov 12	Derivative Conversion (C) Derivative Exercise	2,701,114	+2,700,000	$0.00	+$0

November 03, 2025

CHARLOTTE GUYMAN

Gift

Change: -410

Price: $0.00

Shares: 3,462

Value: -$0

CHARLOTTE GUYMAN

Derivative Conversion

Change: +1,500

Price: $0.00

Shares: 3,872

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
CHARLOTTE GUYMAN	Nov 05	Gift (G) Non-Market Transfer	3,462	-410	$0.00	-$0
CHARLOTTE GUYMAN	Nov 05	Derivative Conversion (C) Derivative Exercise	3,872	+1,500	$0.00	+$0

October 22, 2025

Ajit Jain

Gift

Change: -32

Price: $0.00

Shares: 352

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Ajit Jain	Oct 24	Gift (G) Non-Market Transfer	352	-32	$0.00	-$0

September 26, 2025

Ajit Jain

Open Market Sale

Change: -15,000

Price: $0.00

Shares: 107,308

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Ajit Jain	Sep 26	Open Market Sale (S) Market Sale	107,308	-15,000	$0.00	-$0

September 24, 2025

Ajit Jain

Gift

Change: -32

Price: $0.00

Shares: 384

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Ajit Jain	Sep 26	Gift (G) Non-Market Transfer	384	-32	$0.00	-$0

August 08, 2025

Ajit Jain

Open Market Sale

Change: -2,000

Price: $464.73

Shares: 122,308

Value: -$929,452

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Ajit Jain	Aug 08	Open Market Sale (S) Market Sale	122,308	-2,000	$464.73	-$929,452

July 14, 2025

WARREN E BUFFETT

Gift

Change: -30

Price: $0.00

Shares: 1,114

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
WARREN E BUFFETT	Jul 16	Gift (G) Non-Market Transfer	1,114	-30	$0.00	-$0

June 30, 2025

WARREN E BUFFETT

Gift

Change: -9,433,839

Price: $0.00

Shares: 2,925,626

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
WARREN E BUFFETT	Jun 30	Gift (G) Non-Market Transfer	2,925,626	-9,433,839	$0.00	-$0

June 27, 2025

WARREN E BUFFETT

Derivative Conversion

Change: +12,358,500

Price: $0.00

Shares: 12,359,465

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
WARREN E BUFFETT	Jun 30	Derivative Conversion (C) Derivative Exercise	12,359,465	+12,358,500	$0.00	+$0

May 14, 2025

WARREN E BUFFETT

Gift

Change: -22

Price: $0.00

Shares: 965

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
WARREN E BUFFETT	May 15	Gift (G) Non-Market Transfer	965	-22	$0.00	-$0