Arch Capital Group (ACGL) director receives equity share awards

Rhea-AI Filing Summary

KILCOYNE MOIRA A. reported acquisition or exercise transactions in this Form 4 filing.

Arch Capital Group Ltd. director Moira A. Kilcoyne reported receiving common share awards as equity compensation. On May 5, 2026, she was granted 1,327 common shares and a separate award of 2,071 common shares, both at a stated price of $0.00 per share, reflecting non-cash grants.

Footnotes state that some of these are restricted shares that will vest on the earlier of one year from the grant date or the company’s next Annual General Meeting of Shareholders, and that the awards form part of the director-elected annual retainer for board service.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider KILCOYNE MOIRA A.

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Shares, $.0011 par value per share	2,071	$0.00	--
Grant/Award	Common Shares, $.0011 par value per share	1,327	$0.00	--

Holdings After Transaction: Common Shares, $.0011 par value per share — 34,515 shares (Direct, null)

Footnotes (1)

1. Subject to the terms of the restricted share agreement, represents restricted shares that will become vested on the date that is the earlier of 1) one year following the grant date or 2) Arch Capital Group Ltd.'s next Annual General Meeting of Shareholders. Represents shares granted as part of the director-elected annual retainer for serving as a director of the Issuer.

Key Figures

Grant size 1: 1,327 shares Grant size 2: 2,071 shares Grant price: $0.00 per share +2 more

5 metrics

Grant size 1 1,327 shares Common shares granted on May 5, 2026

Grant size 2 2,071 shares Common shares granted on May 5, 2026

Grant price $0.00 per share Both awards reported as non-cash grants

Holdings after grant (line 1) 35,842 shares Total direct common shares following first reported grant

Holdings after grant (line 2) 34,515 shares Total direct common shares following second reported grant

Key Terms

restricted shares, Annual General Meeting of Shareholders, director-elected annual retainer, grant, award, or other acquisition

4 terms

restricted shares financial

"represents restricted shares that will become vested on the date that is the earlier"

Restricted shares are company stock that cannot be sold or transferred immediately because they are subject to legal or contractual limits, such as a required holding period or performance conditions. They matter to investors because these locked-up shares can affect a company’s available stock for trading, future dilution, and insider incentives—imagine a gift that can’t be cashed until certain conditions are met, which changes when and how much supply can suddenly enter the market.

Annual General Meeting of Shareholders financial

"the earlier of 1) one year following the grant date or 2) Arch Capital Group Ltd.'s next Annual General Meeting of Shareholders"

director-elected annual retainer financial

"Represents shares granted as part of the director-elected annual retainer for serving as a director"

grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition""

Form 4 Insider Transactions: What Each Field Means →

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^*

KILCOYNE MOIRA A.

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/05/2026

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	05/05/2026		A		2,071	A	(1)	34,515	D
Common Shares, $.0011 par value per share	05/05/2026		A		1,327	A	(2)	35,842	D

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

Explanation of Responses:

1. Subject to the terms of the restricted share agreement, represents restricted shares that will become vested on the date that is the earlier of 1) one year following the grant date or 2) Arch Capital Group Ltd.'s next Annual General Meeting of Shareholders.

2. Represents shares granted as part of the director-elected annual retainer for serving as a director of the Issuer.

Remarks:

	/s/ Moira A. Kilcoyne	05/07/2026
	** 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)

FAQ

What did Arch Capital (ACGL) director Moira Kilcoyne report in this Form 4?

She reported receiving two equity awards of common shares as director compensation. One grant covered 1,327 shares and another 2,071 shares, both at a stated price of $0.00 per share, reflecting non-cash, stock-based compensation rather than an open-market purchase.

Were Moira Kilcoyne’s Arch Capital share awards open-market purchases?

No, the awards were not open-market purchases. Both transactions are coded as grants or awards at a transaction price of $0.00 per share, indicating stock-based compensation for board service rather than shares bought directly in the market by the director.

How many Arch Capital shares does Moira Kilcoyne hold after these grants?

After one grant, her reported direct holdings are 35,842 common shares; after the other, 34,515 shares. These figures appear in separate transaction lines, reflecting total direct ownership following each individual grant as reported in the Form 4 data.

Do Moira Kilcoyne’s Arch Capital share awards have vesting conditions?

Yes, a footnote explains that certain granted shares are restricted and vest on the earlier of one year after the grant date or Arch Capital Group Ltd.’s next Annual General Meeting of Shareholders, indicating a performance of service-based vesting schedule tied to board tenure.

Why did Arch Capital grant shares to director Moira Kilcoyne?

A footnote states that the shares were granted as part of the director-elected annual retainer for serving as a director of the issuer. This means they form part of her regular board compensation, delivered in equity rather than solely in cash payments.