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 4 of 6

51 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2008-03-14 CB Grant (A) $0 EDGAR
2008-03-04 CB Mixed +8,946 $448.9K EDGAR
2008-02-28 CB Mixed +17,883 -$741.5K EDGAR
2008-02-27 CB Sell (S) −33,900 -$1.82M EDGAR
2008-02-27 CB Sell (S) −4,634 -$249.5K EDGAR
2008-02-27 CB Mixed +17,882 -$741.6K EDGAR
2008-02-08 CB Mixed +38,534 $2.02M EDGAR
2007-12-20 CB Gift (G) −200 $0 EDGAR
2007-12-04 CB Sell (S) −9,679 -$525.6K EDGAR
2007-11-30 CB Tax (F) −7,437 -$402.4K EDGAR
Showing 3140 of 51
Page 4 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.