MICHAEL OREILLY

CIK 1192729 · Vice Chairman · last filed 2026-05-22

"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

$88.80M

Companies

3

Total Filings

51

Lifetime Open-Market Net

-$13.12M

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
MKL Director 3,844 $1846.00 $7.10M $0 24 2026-05-22
ALTERRA CAPITAL HOLDINGS Ltd (ALTE) Delisted Director 24,000 $189.8K 4 2012-05-09
CB Vice Chairman 248,999 $328.14 $81.71M -$13.31M 22 2008-05-07

Recent Filings · Page 5 of 6

51 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2007-11-06 CB Mixed +11,127 -$461.3K EDGAR
2007-08-14 CB Sell (S) −11,127 -$555.4K EDGAR
2007-06-19 CB Mixed -$657.6K EDGAR
2007-03-07 CB Gift (G) −5,236 -$261.2K EDGAR
2007-03-05 CB Sell (S) −17,787 -$901.1K EDGAR
2007-03-05 CB Sell (S) −800 -$40.6K EDGAR
2007-03-05 CB Grant (A) $0 EDGAR
2007-02-28 CB Sell (S) −30,000 -$1.53M EDGAR
2007-02-23 CB Mixed +6,519 $28 EDGAR
2007-02-08 CB Mixed +48,587 $2.57M EDGAR
Showing 4150 of 51
Page 5 of 6
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.