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BRK-BBerkshire Hathaway

Michael O'Sullivan

Senior Vice President, General Counsel and Secretary at Berkshire Hathaway, as of Aug 13, 2026Sold $777K of stock in the past 12 months: 24% under a disclosed plan and 76% to cover taxes. Bought $501K of stock in 5 open-market purchases.

Updated Oct 15, 2026 from SEC filings · covers Oct 16, 2025 to Oct 15, 2026
1.2K
shares held after the latest filing, Berkshire Hathaway
Vested shares reported on Forms 3, 4 and 5 only. Not the insider's whole wealth.
$501K
open-market purchases, past 12 months (5 trades)
2
companies filed for

Selling by month

Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planTo cover taxesOne dollar scale for every month; the tallest bar is labeled
Oct 2025: $186K under a disclosed planOctNov 2025: $591K to cover taxes$591KNovDecJanFebMarAprMayJunJulAugSepOct

Pattern

What the filings show, past 12 months. Nothing here rates or predicts.

Roles from filings

Every company we track where this person has filed, newest filing first.

CompanyTitleFirst filingLatest filing
Berkshire Hathaway (BRK-B)Senior Vice President, General Counsel and SecretaryMay 5, 2026Aug 13, 2026
Snap Inc (SNAP)General CounselSep 8, 2017Nov 19, 2025

Recent filings

The last 4 days with transactions, newest first, one line per trade date. Each number links to an SEC filing.

This page shows only what this person reported on SEC ownership filings. See the methodology. Spotted something wrong? Report an error.