BERKSHIRE HATHAWAY INC 4

Insider Michael J. O'Sullivan bought a total of 488 Berkshire Hathaway Inc. Class B shares on August 12, 2026 for about $249,000 through a living trust.

On August 12, 2026, Michael J. O'Sullivan, Senior Vice President, General Counsel and Secretary of Berkshire Hathaway Inc., reported three open‑market purchases of Berkshire Hathaway Class B Common Stock through a living trust of which he is trustee. The trust acquired 45 shares at a weighted average price of approximately $510.64 per share, 400 shares at approximately $512.52 per share, and 43 shares at approximately $513.61 per share, for a total of 488 shares and an aggregate purchase value of roughly $249,000. Following these purchases, the trust’s beneficial ownership increased in stages from 708 shares to 1,108 shares and then to 1,151 shares of Class B stock. The reported prices reflect weighted averages for multiple trades within narrow intraday ranges, and the insider has undertaken to provide full trade‑level detail upon request.

Filing Facts

CIK

1067983

Ticker

BRK-B

Form

4

Source Type

sec

Accession

0001193125-26-349574

Alert Tier

7