Arch Capital president sells 48,661 common shares

Available on EDGAR 11/13/2026 - 04:15 PM EST Accepted by SEC EDGAR 11/13/2026 - 04:14 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Arch Capital Group Ltd. (ACGL) President Rajeh Maamoun reported exercising options covering 38,661 common shares at a $21.55 exercise price on November 10, 2026, and selling 48,661 shares in five transactions that day. No Rule 10b5-1 plan is reported. The common-share acquisition amount includes 267 shares acquired May 29, 2026 under Arch Capital's Employee Share Purchase Plan. A holding entry lists 40,600 common shares held indirectly by an LLC.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 7 txns

Insider Rajeh Maamoun

Role President, Arch Capital Group

Sold 48,661 shs ($5.28M)

Approx. gross sale proceeds $5.28M

Approx. exercise cost $833K

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy) F7	38,661	$0.00	$0.00
Exercise	Common Shares, $.0011 par value per share F1	38,661	$21.55	$833K
Sale	Common Shares, $.0011 par value per share F2	7,630	$107.5316	$820K
Sale	Common Shares, $.0011 par value per share F3	11,333	$108.6112	$1.23M
Sale	Common Shares, $.0011 par value per share F4	19,698	$109.2791	$2.15M
Sale	Common Shares, $.0011 par value per share F5	8,343	$107.7236	$899K
Sale	Common Shares, $.0011 par value per share F6	1,657	$108.1613	$179K
Holding	Common Shares, $.0011 par value per share	--	--	--

Holdings After Transaction: Stock Option (Right to Buy) — 0 options (Direct); Common Shares, $.0011 par value per share — 418,645 shares (Direct); Common Shares, $.0011 par value per share — 40,600 shares (Indirect, By LLC)

Footnotes (7)

1. F1. Amount includes 267 Common Shares acquired on May 29, 2026 under the Arch Capital Group Ltd. Employee Share Purchase Plan.
2. F2. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $107.0050 to $107.9950. 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.
3. F3. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $108.0050 to $109.0000. 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.
4. F4. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $109.0150 to $109.6300. 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.
5. F5. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $107.0950 to $108.0900. 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.
6. F6. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $108.0950 to $108.3600. 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.
7. F7. This stock option is exercisable in three equal annual installments commencing May 11, 2019, and the next two installments on May 11, 2020 and May 11, 2021, subject to the applicable award agreement.

Key Figures

Options exercised: 38,661 underlying common shares Exercise price: $21.55 per share Shares sold: 48,661 common shares +3 more

6 metrics

Options exercised 38,661 underlying common shares Reported by President Rajeh Maamoun on November 10, 2026

Exercise price $21.55 per share For the reported stock-option exercise on November 10, 2026

Shares sold 48,661 common shares Five reported sale transactions on November 10, 2026

Sale-lot weighted-average prices 7,630 shares at $107.5316; 11,333 at $108.6112; 19,698 at $109.2791; 8,343 at $107.7236; and 1,657 at $108.1613 per share Five reported sale transactions on November 10, 2026

Indirect common-share holding 40,600 shares Holding entry lists the shares as held by an LLC

Employee Share Purchase Plan shares 267 common shares Acquired May 29, 2026; included in the reported common-share acquisition amount

Key Terms

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

3 terms

weighted average sale price financial

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

Employee Share Purchase Plan financial

"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.

Stock Option (Right to Buy) financial

"Stock Option (Right to Buy)"

FAQ

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

How many ACGL shares did Rajeh Maamoun sell, and at what prices?

Rajeh Maamoun reported sales totaling 48,661 common shares in five transactions on November 10, 2026. Their weighted-average prices were $107.5316, $108.6112, $109.2791, $107.7236 and $108.1613 per share. No Rule 10b5-1 plan is reported.

How many ACGL options did Rajeh Maamoun exercise?

Rajeh Maamoun reported exercising options covering 38,661 common shares at a $21.55 exercise price on November 10, 2026. The common-share acquisition amount includes 267 shares acquired on May 29, 2026 under Arch Capital Group Ltd.'s Employee Share Purchase Plan.

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

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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^*

Rajeh Maamoun

(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)
	President, Arch Capital Group

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/10/2026

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	11/10/2026		M		38,661	A	$21.55	467,306(1)	D
Common Shares, $.0011 par value per share	11/10/2026		S		7,630	D	$107.5316(2)	459,676	D
Common Shares, $.0011 par value per share	11/10/2026		S		11,333	D	$108.6112(3)	448,343	D
Common Shares, $.0011 par value per share	11/10/2026		S		19,698	D	$109.2791(4)	428,645	D
Common Shares, $.0011 par value per share	11/10/2026		S		8,343	D	$107.7236(5)	420,302	D
Common Shares, $.0011 par value per share	11/10/2026		S		1,657	D	$108.1613(6)	418,645	D
Common Shares, $.0011 par value per share								40,600	I	By LLC

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)	$21.55	11/10/2026		M			38,661	(7)	05/11/2028	Common Shares, $.0011 par value per share	38,661	$0	0	D

Explanation of Responses:

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

2. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $107.0050 to $107.9950. 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.

3. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $108.0050 to $109.0000. 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.

4. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $109.0150 to $109.6300. 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.

5. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $107.0950 to $108.0900. 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.

6. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $108.0950 to $108.3600. 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.

7. This stock option is exercisable in three equal annual installments commencing May 11, 2019, and the next two installments on May 11, 2020 and May 11, 2021, subject to the applicable award agreement.

Remarks:

	/s/ Maamoun Rajeh	11/13/2026
	** 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)