Arch Capital CFO sells 11,010 shares after option exercise

ARCH CAPITAL GROUP LTD.

Rhea-AI Filing Summary

ARCH CAPITAL GROUP LTD. (ACGL) officer Francois Morin, CFO and Treasurer, reported an option exercise and same-day share sale. On 2026-08-18 he exercised 11,010 stock options at $27.0867 per share, receiving 11,010 common shares, and then sold 11,010 common shares at a weighted average price of $99.3214. Following these transactions, an indirect holding of 114,229 common shares is reported as held by a revocable trust for the benefit of his spouse; these shares were previously owned directly in a joint account. The Form 4 does not indicate use of a Rule 10b5-1 trading plan.

Insider Trade Summary

Exercise and Sale: 11,010 shares ($795K approx. pre-tax spread)

Exercise and Sale 4 txns

Insider Morin Francois

Role CFO and Treasurer

Sold 11,010 shs ($1.09M)

Approx. gross sale proceeds $1.09M

Approx. exercise cost $298K

Approx. pre-tax spread $795K

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy) F4	11,010	$0.00	$0.00
Exercise	Common Shares, $.0011 par value per share	11,010	$27.0867	$298K
Sale	Common Shares, $.0011 par value per share F1, F2	11,010	$99.3214	$1.09M
holding	Common Shares, $.0011 par value per share F3	--	--	--

Holdings After Transaction: Stock Option (Right to Buy) — 0 contracts (Direct); Common Shares, $.0011 par value per share — 184,826 shares (Direct); Common Shares, $.0011 par value per share — 114,229 shares (Indirect, By Trust)

Footnotes (4)

1. F1. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $99.14 to $99.56. 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.
2. F2. Amount includes 267 Common Shares acquired on May 29, 2026 under the Arch Capital Group Ltd. Employee Share Purchase Plan.
3. F3. The shares were previously owned directly in a joint account with the insider's spouse and were contributed to a revocable trust for the benefit of the insider's spouse.
4. F4. This stock option is exercisable in three equal annual installments commencing May 8, 2018, and the next two installments on May 8, 2019 and May 8, 2020, subject to the applicable award agreement.

Key Figures

Options exercised: 11,010 shares Exercise price: $27.0867 per share Shares sold: 11,010 shares +4 more

7 metrics

Options exercised 11,010 shares Stock option exercise for ACGL common shares on 2026-08-18

Exercise price $27.0867 per share Strike price of stock option exercised for 11,010 shares

Shares sold 11,010 shares Common shares sold on 2026-08-18 following option exercise

Weighted average sale price $99.3214 per share Weighted average price for 11,010 shares sold; individual prices $99.14–$99.56

Indirect holdings by trust 114,229 shares ACGL common shares held indirectly by revocable trust for spouse after transactions

Option expiration date 2027-05-08 Expiration date of the stock option that was exercised

Employee Share Purchase Plan acquisition 267 shares Common shares acquired on May 29, 2026 under Arch Capital Group Ltd. Employee Share Purchase Plan

Key Terms

Stock Option (Right to Buy), weighted average sale price, revocable trust, Employee Share Purchase Plan

4 terms

Stock Option (Right to Buy) financial

"security_title: Stock Option (Right to Buy)"

weighted average sale price financial

"The price reported is a weighted average sale price."

revocable trust financial

"were contributed to a revocable trust for the benefit"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

Employee Share Purchase Plan financial

"acquired on May 29, 2026 under the Arch Capital Group Ltd. Employee Share Purchase Plan."

A program that lets employees buy their employer’s stock, often through regular payroll deductions and sometimes at a discounted price or with matching contributions; think of it as a company-run savings plan that converts part of pay into ownership. It matters to investors because it can increase insider ownership and employee motivation, potentially affecting company performance, and can slightly change share supply when new stock is issued or sold.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Arch Capital Group (ACGL) CFO Francois Morin report in this Form 4?

Francois Morin reported exercising 11,010 stock options at $27.0867 per share on 2026-08-18, receiving 11,010 common shares, and then selling 11,010 common shares at a weighted average price of $99.3214 per share on the same date.

How many Arch Capital Group (ACGL) shares did Francois Morin sell and at what price?

He sold 11,010 common shares of ACGL on 2026-08-18 at a weighted average price of $99.3214 per share, with individual transaction prices ranging from $99.14 to $99.56, as disclosed in the Form 4 footnote.

What stock options did Francois Morin exercise in Arch Capital Group (ACGL)?

He exercised a stock option for 11,010 shares of ACGL common stock at an exercise price of $27.0867 per share on 2026-08-18. The option, originally exercisable in three annual installments starting May 8, 2018, now shows 0 derivative shares remaining.

What are Francois Morin’s remaining indirect holdings of Arch Capital Group (ACGL) shares?

After the reported transactions, an indirect holding of 114,229 ACGL common shares is reported as held by trust. According to the footnote, these shares were previously owned directly in a joint account and were contributed to a revocable trust for the benefit of his spouse.

Were the Arch Capital Group (ACGL) transactions by Francois Morin under a Rule 10b5-1 plan?

No. The Form 4 indicates the Rule 10b5-1 checkbox is not checked, and the footnotes do not state that the transactions were made pursuant to a Rule 10b5-1 trading plan.

Did Francois Morin acquire any Arch Capital Group (ACGL) shares through an employee plan mentioned here?

A footnote states that an amount includes 267 common shares acquired on May 29, 2026 under the Arch Capital Group Ltd. Employee Share Purchase Plan, indicating participation in that plan as part of his reported holdings.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/20/2026 - 04:50 PM Accepted by SEC EDGAR 08/20/2026 - 04:49 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Morin Francois

(Last) (First) (Middle)

WATERLOO HOUSE, GROUND FLOOR

100 PITTS BAY ROAD

(Street)

PEMBROKE HM 08

(City) (State) (Zip)

BERMUDA

(Country)

2. Issuer Name and Ticker or Trading Symbol
ARCH CAPITAL GROUP LTD. [ ACGL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CFO and Treasurer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/18/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Shares, $.0011 par value per share	08/18/2026		M		11,010	A	$27.0867	195,836	D
Common Shares, $.0011 par value per share	08/18/2026		S		11,010	D	$99.3214(1)	184,826(2)	D
Common Shares, $.0011 par value per share								114,229(3)	I	By Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$27.0867	08/18/2026		M			11,010	(4)	05/08/2027	Common Shares, $.0011 par value per share	11,010	$0	0	D

Explanation of Responses:

1. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $99.14 to $99.56. 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.

2. Amount includes 267 Common Shares acquired on May 29, 2026 under the Arch Capital Group Ltd. Employee Share Purchase Plan.

3. The shares were previously owned directly in a joint account with the insider's spouse and were contributed to a revocable trust for the benefit of the insider's spouse.

4. This stock option is exercisable in three equal annual installments commencing May 8, 2018, and the next two installments on May 8, 2019 and May 8, 2020, subject to the applicable award agreement.

Remarks:

	/s/ Louis Petrillo, Attorney-in-Fact	08/20/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)