Accelerant co-founder granted 128,644 RSUs

Lee-Smith Christopher reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Lee-Smith Christopher reported acquisition or exercise transactions in this Form 4 filing.

Accelerant Holdings director and officer Christopher Lee-Smith reported an award of 128,644 Class A common share–based Restricted Stock Units as compensation. The grant was made on March 18, 2026, at no cash cost to him, and brings his direct holdings to 17,784,023 Class A shares.

The RSUs are scheduled to vest over time, with 25% vesting on the one-year anniversary of the grant date and 6.25% vesting on the first day of each of the twelve calendar quarters that follow, tying the award to ongoing service.

Insider Trade Summary

Grant/Award: 128,644 shares

Grant/Award 1 txn

Insider Lee-Smith Christopher

Role Co-Founder, Head of Distrib.

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Shares	128,644	$0.00	$0.00

Holdings After Transaction: Class A Common Shares — 17,784,023 shares (Direct)

Footnotes (1)

1. F1. Represents an award of Restricted Stock Units granted on March 18, 2026. The RSUs are scheduled to vest as to twenty-five percent (25%) of the RSUs on the one-year anniversary of the Grant Date and as to six and one-quarter percent (6-1/4%) of the RSUs on the first day of each of the twelve (12) calendar quarters beginning after such anniversary.

FAQ

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

What insider transaction did Accelerant Holdings (ARX) report for Christopher Lee-Smith?

Accelerant Holdings reported that Christopher Lee-Smith received 128,644 Restricted Stock Units tied to Class A Common Shares as a compensation award. The grant was dated March 18, 2026 and did not involve an open-market stock purchase or sale.

Is the Accelerant Holdings (ARX) Form 4 transaction a stock purchase or a compensation grant?

The Form 4 shows a compensation grant, not a market trade. Christopher Lee-Smith received 128,644 Restricted Stock Units at no cash cost, classified as a grant, award, or other acquisition, rather than an open-market buy or sell transaction.

How do the new Restricted Stock Units for ARX’s Christopher Lee-Smith vest?

The RSUs vest gradually over time. Twenty-five percent vest on the one-year anniversary of the March 18, 2026 grant date, then 6.25% vest on the first day of each of the twelve calendar quarters that follow this anniversary, subject to continued service.

How many Accelerant Holdings (ARX) shares does Christopher Lee-Smith hold after this Form 4?

After the reported RSU grant, Christopher Lee-Smith directly holds 17,784,023 Class A Common Shares. This figure reflects his position following the March 18, 2026 award and provides context for the relative size of the new compensation grant.

What role does Christopher Lee-Smith have at Accelerant Holdings (ARX)?

Christopher Lee-Smith is both a director and an officer at Accelerant Holdings, serving as Co-Founder and Head of Distribution. The reported RSU grant represents equity-based compensation aligned with his leadership responsibilities at the company.

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

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Accepted by SEC EDGAR 03/20/2026 - 07:05 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^*

Lee-Smith Christopher

(Last) (First) (Middle)

UNIT 106, WINDWARD 3

REGATTA OFFICE PARK, WEST BAY ROAD

(Street)

GRAND CAYMAN KY1-1108

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Accelerant Holdings [ ARX ]

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

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Co-Founder, Head of Distrib.

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/18/2026

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
Class A Common Shares	03/18/2026		A		128,644(1)	A	$0	17,784,023	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. Represents an award of Restricted Stock Units granted on March 18, 2026. The RSUs are scheduled to vest as to twenty-five percent (25%) of the RSUs on the one-year anniversary of the Grant Date and as to six and one-quarter percent (6-1/4%) of the RSUs on the first day of each of the twelve (12) calendar quarters beginning after such anniversary.

Remarks:

	/s/ David Pelsue, Attorney-in-Fact	03/20/2026
	** 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)