Insider trading

Period: 120 months Stock: BRK-B + Add filter Clear all
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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

24 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

24 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

24 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

24 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
24 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
24 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

24 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
28 Sep 2026
Jain Ajit Vice Chairman · indirect
Sold at will
$19.97M 39,700 at 503.09
37.0%
Not planned
12 Aug 2026
O'Sullivan Michael J. See Remarks · indirect
Bought 3×
$250.07K 488 at 512.44
73.6%
+74% of stake
6 May 2026
O'Sullivan Michael J. See Remarks · indirect
Bought 2×
$250.55K 536 at 467.44
422%
First buy on file
26 Sep 2025
Jain Ajit Vice Chairman · indirect
Sold at will
no price 15,000 shares
12.3%
Not planned
8 Aug 2025
Jain Ajit Vice Chairman · indirect
Sold at will
$929.45K 2,000 at 464.73
1.6%
Not planned
3 Mar 2025
WITMER MERYL B Director · indirect
Sold at will
$1.55M 2 at 775,883.30
50.0%
Sold half or more
8 Aug 2023
Jain Ajit Vice Chairman · indirect
Sold at will
$10.15M 28,000 at 362.55
18.4%
Not planned
2 Mar 2023
Jain Ajit Vice Chairman · indirect
Sold, plan not stated
$2.00M 6,595 at 303.28
4.2%
29 Nov 2022
Jain Ajit Vice Chairman · indirect
Sold, plan not stated
$1.26M 4,020 at 313.40
2.5%
29 Sep 2022
Abel Gregory E. Vice Chair · indirect
Bought 113×
$68.33M 168 at 406,729.53
×34
First buy on file
1 Sep 2022
Jain Ajit Vice Chairman · indirect
Sold, plan not stated
$701.02K 2,500 at 280.41
1.5%
28 Jul 2022
Jain Ajit Vice Chairman · indirect
Sold, plan not stated
$1.00M 3,420 at 293.17
2.0%
5 Jul 2022
OLSON RONALD L Director · indirect
Bought
$415.40K 1,515 at 274.19
opened
5 Jul 2022
OLSON RONALD L Director
Bought
$245.78K 895 at 274.62
18.9%
24 Jun 2022
Jain Ajit Vice Chairman · indirect
Sold, plan not stated
$333.27K 1,200 at 277.72
0.7%
29 Oct 2021
Jain Ajit Vice Chairman · indirect
Sold, plan not stated
$2.07M 7,200 at 287.54
4.1%
4 May 2021
Jain Ajit Vice Chairman · indirect
Sold, plan not stated
$2.18M 7,852 at 278.19
4.2%
18 Dec 2020
OLSON RONALD L Director
Bought
$889.33K 4,000 at 222.33
277%
First buy on file
30 Sep 2020
Jain Ajit Vice Chairman · indirect
Sold, plan not stated
$1.49M 7,000 at 213.00
3.6%
1 Jul 2020
Jain Ajit Vice Chairman · indirect
Sold, plan not stated
$995.32K 5,600 at 177.74
2.8%
18 May 2020
WITMER MERYL B Director · indirect
Bought 6×
$2.09M 8 at 261,002.63
opened
First buy on file
18 May 2020
WITMER MERYL B Director
Bought
$173.30K 1,000 at 173.30
100%
First buy on file
7 Nov 2018
Jain Ajit Vice Chairman · indirect
Sold, plan not stated
$1.25M 5,700 at 219.69
4.4%
10 May 2018
Jain Ajit Vice Chairman · indirect
Sold, plan not stated
$1.20M 6,000 at 199.82
4.5%
Showing 1–24 of 24.