Michael J. O'Sullivan

CIK 1713777 · See Remarks · last filed 2026-05-06

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$12.66M

Companies

2

Total Filings

113

Lifetime Open-Market Net

-$60.42M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
BRK.B See Remarks 663 $489.25 $324.4K $250.5K 1 2026-05-06
SNAP General Counsel 2,345,436 $5.26 $12.34M -$60.67M 112 2025-11-19

Recent Filings · Page 6 of 12

113 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2023-05-18 SNAP Mixed −60,793 -$517.5K EDGAR
2023-05-02 SNAP Sell (S) −13,000 -$111.2K EDGAR
2023-04-04 SNAP Sell (S) −13,000 -$144.7K EDGAR
2023-03-02 SNAP Sell (S) −13,000 -$131.9K EDGAR
2023-02-21 SNAP Mixed −61,001 -$674.6K EDGAR
2023-02-01 SNAP Grant (A) +765,678 $0 EDGAR
2022-12-20 SNAP Mixed −5,155 -$43.7K EDGAR
2022-11-30 SNAP Grant (A) +9,469 $0 EDGAR
2022-11-18 SNAP Mixed −44,404 -$495.7K EDGAR
2022-08-18 SNAP Mixed −41,929 -$515.1K EDGAR
Showing 5160 of 113
Page 6 of 12
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.