Brian S. Posner - 11 Mar 2026 Form 4 Insider Report for ARCH CAPITAL GROUP LTD. (ACGL)

Role
Director
Signature
/s/ Brian S. Posner
Issuer symbol
ACGL
Transactions as of
11 Mar 2026
Net transactions value
-$51,345
Form type
4
Filing time
12 Mar 2026, 16:29:31 UTC
Previous filing
10 Mar 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Posner Brian S Director WATERLOO HOUSE, GROUND FLOOR, 100 PITTS BAY ROAD, PEMBROKE, BERMUDA /s/ Brian S. Posner 12 Mar 2026 0001372455

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ACGL Depositary Shares, Series G Sale $51,345 -3,000 -60% $17.12 2,000 11 Mar 2026 Direct F1, F2
holding ACGL Common Shares, $.0011 par value per share 120,104 11 Mar 2026 Direct
holding ACGL Depositary Shares, Series F 3,000 11 Mar 2026 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each Depositary Share Represents 1/1,000th interest in a Series G Non-Cumulative Preferred Share.
F2 The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $17.1149 to $17.1150. Upon request, the full information regarding the number of shares sold at each separate price within the range will be provided to the issuer, any security holder of the issuer or the staff of the Securities Exchange Commission.
F3 Each Depositary Share Represents 1/1,000th interest in a Series F Non-Cumulative Preferred Share.