Insider trade

Officer purchased ~$205K of BRK.B shares in the open market

Traded Aug 12, 2026 · Filed Aug 13, 2026

~$205K
Reported value · 400 sh @ $512.52: 1,108
Holds after · shares reported: -1.9%
stock since the trade · S&P 500 -1.1%, $510.00 → $500.50 on Oct 1

Why it stands out

Berkshire Hathaway's See Remarks spent $205K of their very own money to buy Berkshire Hathaway shares. Their pile of Berkshire Hathaway shares grew by 57%.

Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell

View the official recordSEC Form 4 — Statement of Changes in Beneficial Ownership

All the details

Dates, kept separate

Transaction date: Aug 12, 2026
Reporting period: Not applicable
Filed with the SEC: Aug 13, 2026

OfficerIndirect holding$100K–$500KHoldings +57%

Context

Classification

open market purchase

Code P — open-market or private purchase

Absolute commitment

~$205,008

Shares × reported transaction price

Size band

$100K–$500K

Ownership change

+56.5%

Purchase shares ÷ estimated pre-transaction holdings, from the filing

Rarity

First purchase in 3 months

Confirmed open-market purchases by the same insider in the available history

Largest by this insider

No

Compared with 2 earlier confirmed purchases

Cluster activity

No other insider purchases within 30 days

Distinct insiders at the same issuer with confirmed open-market purchases

Size vs officer pay

This purchase equals about 1.3% of the average reported total pay of the company's named executive officers other than the CEO, fiscal 2025 ($16.1M)

An average across the officers named in the pay versus performance table of the company's proxy statement (DEF 14A), filed 2026-03-13. This person may not be one of them, so it is not their own pay. A size comparison, not a judgement

Timing vs results

1 day after results of Aug 11, 2026

Results dates are the company's own 8-K (Item 2.02). Many companies only let insiders trade in a window after results

Price at the time

Closed at $510.00 on Aug 12, 2026, within 4% of its 52-week high, after a 2% rise over the previous 30 trading days

52-week range $465.40 (Apr 22, 2026) to $529.42 (Aug 10, 2026), 70% of the way up, from 251 adjusted closes. 30 trading days earlier: $500.39 on Jun 30, 2026. Describes the past only, not a forecast

Planned / mechanical clue

None found in footnotes

Only flagged when a footnote says so; never inferred

After it was reported

After	Stock	S&P 500	Difference
7 days	-1.6%	-1.4%	-0.3%
30 days	+2.2%	-2.0%	+4.2%

Past results only. Not a forecast.

Source receipt

Record ID: 0001193125-26-349574
Filed / recorded: Aug 13, 2026, 9:06 PM UTC
Added to OQRO: Oct 2, 2026, 12:27 PM UTC
Parser: form4-xml-v1
Data quality: Verified: identifiers matched exactly
Issuer: BERKSHIRE HATHAWAY INC
Issuer CIK: 1067983
Ticker: BRK.B
Reporting person: Michael J. O'sullivan
Relationship: Officer
Officer title: See Remarks
Security: Class B Common Stock
Table: Non-derivative (Table I)
Transaction date: Aug 12, 2026
Transaction code: P
Shares / units: 400
Price per share: $512.52
Acquired / disposed: Acquired (A)
Shares owned after: 1,108
Ownership form: Indirect — By Trust
Amendment: No

Footnotes from the filing

The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $512.42 to $512.54 per share, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.
Shares held by a living trust of which the reporting person is trustee.