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

Reporting relationship: Director
Issuer ticker: ACGL
Reported as of: 11 May 2026
Net transaction value: -$34,283
SEC form: 4
Accepted by SEC: 12 May 2026, 16:32:30 UTC
Prior SEC filing: 07 May 2026
Next SEC filing: 22 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Brian S. Posner

Key filing fact

Brian S. Posner filed Form 4 for ARCH CAPITAL GROUP LTD. (ACGL) on 12 May 2026.

Key facts

This page summarizes Brian S. Posner's Form 4 filing for ARCH CAPITAL GROUP LTD. (ACGL).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 12 May 2026, 16:32.

Change

Previous filing in this sequence was filed on 07 May 2026.
Current net transaction value: -$34,283.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001372455 Primary reporting owner

Posner Brian S

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

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ACGL transaction

Depositary Shares, Series G

Sale

Transaction value: $34,283
Shares: -2,000
Change %: -100%
Price: $17.14
Shares after: 0
Date: 11 May 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Each Depositary Share Represents 1/1,000th interest in a Series G Non-Cumulative Preferred Share.

Footnote F2

The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $17.14 to $17.17. 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.