Form 4 Tracker
Michael J. O'Sullivan

Senior Vice President, General Counsel and Secretary · 2 filings · Latest: Aug 12, 2026

BERKSHIRE HATHAWAY INC
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Filing
SNAP
O'Sullivan Michael J.Feb 18, 2025
Proposed Sale
$10.8469,119$749.4K
SNAP
Michael O'Sullivan Living TrustJan 31, 2025
Proposed Sale
$11.2918,000$203.2K
SNAP
Michael O'Sullivan Living TrustDec 31, 2024
Proposed Sale
$10.7718,000$193.9K
SNAP
O'Sullivan Michael J.Dec 16, 2024
Proposed Sale
$11.4456,961$651.8K
SNAP
Michael O'Sullivan Living TrustNov 29, 2024
Proposed Sale
$11.6118,000$209.0K
SNAP
O'Sullivan Michael J.Nov 18, 2024
Proposed Sale
$10.5412,315$129.9K
SNAP
Michael O'Sullivan Living TrustOct 31, 2024
Proposed Sale
$12.1618,000$218.9K
SNAP
Michael O'Sullivan Living TrustSep 30, 2024
Proposed Sale
$10.7018,000$192.6K
SNAP
O'Sullivan Michael J.Sep 16, 2024
Proposed Sale
$9.2959,053$548.6K
SNAP
Michael O'Sullivan Living TrustAug 30, 2024
Proposed Sale
$9.2218,000$166.0K
SNAP
Michael O'SullivanJul 31, 2025
Proposed Sale
$9.4324,000$226.3K

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