Robert Michael Schmeiser - 03 Sep 2026 Form 3 Insider Report for ARCH CAPITAL GROUP LTD. (ACGL)

Reporting relationship: CEO, Arch Global Mortgage Grp.
Issuer ticker: ACGL
Reported as of: 03 Sep 2026
Net transaction value: $0
SEC form: 3
Accepted by SEC: 14 Sep 2026, 16:24:07 UTC
Source filing: View source filing
Reporting owner signature: /s/ Robert Michael Schmeiser

Key filing fact

Robert Michael Schmeiser filed Form 3 for ARCH CAPITAL GROUP LTD. (ACGL) on 14 Sep 2026.

Key facts

This page summarizes Robert Michael Schmeiser's Form 3 filing for ARCH CAPITAL GROUP LTD. (ACGL).
0 reported transactions and 9 derivative rows are listed below.
Accepted by SEC: 14 Sep 2026, 16:24.

Change

No earlier filing in this sequence is available for direct comparison.
Current net transaction value: $0.

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

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (1)

CIK 0002153453 Primary reporting owner

Schmeiser Robert Michael

Relationship: CEO, Arch Global Mortgage Grp.
Address: WATERLOO HOUSE, GROUND FLOOR, 100 PITTS BAY ROAD, PEMBROKE, BERMUDA
Signature: /s/ Robert Michael Schmeiser
Signature date: 14 Sep 2026

Reported non-derivative transactions

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

ACGL holding

Common Shares, $.0011 par value per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 44,856
Date: 03 Sep 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ACGL holding Derivative

Stock Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 03 Sep 2026
Ownership: Direct
Underlying class: Common Shares, $.0011 par value per share
Underlying amount: 4,904
Exercise price: $37.42
Footnotes: F1

ACGL holding Derivative

Stock Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 03 Sep 2026
Ownership: Direct
Underlying class: Common Shares, $.0011 par value per share
Underlying amount: 8,685
Exercise price: $30.82
Footnotes: F2

ACGL holding Derivative

Stock Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 03 Sep 2026
Ownership: Direct
Underlying class: Common Shares, $.0011 par value per share
Underlying amount: 9,139
Exercise price: $42.54
Footnotes: F3

ACGL holding Derivative

Stock Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 03 Sep 2026
Ownership: Direct
Underlying class: Common Shares, $.0011 par value per share
Underlying amount: 5,539
Exercise price: $64.17
Footnotes: F4

ACGL holding Derivative

Stock Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 03 Sep 2026
Ownership: Direct
Underlying class: Common Shares, $.0011 par value per share
Underlying amount: 650
Exercise price: $66.70
Footnotes: F5

ACGL holding Derivative

Stock Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 03 Sep 2026
Ownership: Direct
Underlying class: Common Shares, $.0011 par value per share
Underlying amount: 4,232
Exercise price: $82.22
Footnotes: F6

ACGL holding Derivative

Stock Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 03 Sep 2026
Ownership: Direct
Underlying class: Common Shares, $.0011 par value per share
Underlying amount: 7,148
Exercise price: $91.87
Footnotes: F7

ACGL holding Derivative

Stock Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 03 Sep 2026
Ownership: Direct
Underlying class: Common Shares, $.0011 par value per share
Underlying amount: 3,841
Exercise price: $92.48

ACGL holding Derivative

Stock Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 03 Sep 2026
Ownership: Direct
Underlying class: Common Shares, $.0011 par value per share
Underlying amount: 6,834
Exercise price: $100.48
Footnotes: F8

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 8 footnotes

Footnote F1

This stock option is exercisable in three equal annual installments commencing February 27, 2021, and the next two installments on February 27, 2022 and February 27, 2023, subject to the applicable award agreement.

Footnote F2

This stock option is exercisable in three equal annual installments commencing February 26, 2022, and the next two installments on February 26, 2023 and February 26, 2024, subject to the applicable award agreement.

Footnote F3

This stock option is exercisable in three equal annual installments commencing February 25, 2023, and the next two installments on February 25, 2024 and February 25, 2025, subject to the applicable award agreement.

Footnote F4

This stock option is exercisable in three equal annual installments commencing February 24, 2024, and the next two installments on February 24, 2025 and February 24, 2026, subject to the applicable award agreement.

Footnote F5

This stock option is exercisable in three equal annual installments commencing March 6, 2024, and the next two installments on March 6, 2025 and March 6, 2026, subject to the applicable award agreement.

Footnote F6

The stock option is exercisable in three equal annual installments commencing February 27, 2025, and the next two installments on February 27, 2026 and February 27, 2027, subject to the applicable award agreement

Footnote F7

The stock option is exercisable in three equal annual installments commencing March 4, 2026, and the next two installments on March 4, 2027 and March 4, 2028, subject to the applicable award agreement.

Footnote F8

This stock option is exercisable in three equal annual installments commencing March 3, 2027, and the next two installments on March 3, 2028 and March 3, 2029, subject to the applicable award agreement.

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