Accelerant COO granted 279,329 RSUs

Accelerant Holdings reported that COO, Risk Exchange Matthew David Sternberg received an award of 279,329 Class A Common Share RSUs on May 13, 2026.

Rhea-AI Filing Summary

Accelerant Holdings reported that COO, Risk Exchange Matthew David Sternberg received an award of 279,329 Class A Common Share RSUs on May 13, 2026. These Restricted Stock Units are compensation, not an open‑market purchase, and carry a zero grant price.

The RSUs 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 twelve calendar quarters after that. Each RSU converts into one Class A common share upon settlement. Following this award, Sternberg directly holds 617,960 Class A common shares.

Insider Trade Summary

Grant/Award: 279,329 shares

Grant/Award 1 txn

Insider Sternberg Matthew David

Role COO, Risk Exchange

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Shares	279,329	$0.00	$0.00

Holdings After Transaction: Class A Common Shares — 617,960 shares (Direct)

Footnotes (1)

1. F1. Represents an award of Restricted Stock Units ("RSUs") granted on May 13, 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. Each RSU represents a contingent right to receive one Class A common share upon settlement.

Key Figures

RSUs granted: 279,329 RSUs Shares after grant: 617,960 shares Initial vesting tranche: 25% of RSUs +3 more

6 metrics

RSUs granted 279,329 RSUs Award of Restricted Stock Units on May 13, 2026

Shares after grant 617,960 shares Class A common shares directly held following the RSU award

Initial vesting tranche 25% of RSUs Vests on one-year anniversary of May 13, 2026 grant date

Subsequent vesting rate 6.25% per quarter Vests on first day of each of 12 calendar quarters after first anniversary

RSU-to-share ratio 1 share per RSU Each RSU represents a contingent right to one Class A common share

Grant price 0.0000 per share Reported transaction price per share for the RSU award

Key Terms

Restricted Stock Units ("RSUs"), vest, contingent right, Class A Common Shares

4 terms

Restricted Stock Units ("RSUs") financial

"Represents an award of Restricted Stock Units ("RSUs") granted on May 13, 2026."

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

vest financial

"The RSUs are scheduled to vest as to twenty-five percent (25%) of the RSUs on the one-year anniversary of the Grant Date"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

contingent right financial

"Each RSU represents a contingent right to receive one Class A common share upon settlement."

Class A Common Shares financial

"Each RSU represents a contingent right to receive one Class A common share upon settlement."

A Class A common share is a specific type of ordinary company share that represents an ownership stake and usually carries particular voting rights or payout priorities compared with other share classes. For investors it matters because those differences affect how much influence you have over company decisions, how dividends or liquidation proceeds might be distributed, and how easily the shares trade — like choosing between car models where one has extra features (more control) and another focuses on price or availability (liquidity).

FAQ

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

What insider transaction did Accelerant Holdings (ARX) report for Matthew David Sternberg?

Accelerant Holdings reported that COO, Risk Exchange Matthew David Sternberg received a grant of 279,329 Restricted Stock Units. These RSUs are a stock-based compensation award, not an open‑market share purchase, and each unit is linked to one Class A common share upon settlement.

How many Accelerant Holdings (ARX) RSUs were granted to the COO and on what date?

Sternberg was granted 279,329 Restricted Stock Units on May 13, 2026. This award represents a significant equity-based compensation package, aligning the COO’s interests with shareholders through future delivery of Class A common shares as the RSUs vest over time.

What is the vesting schedule for the 279,329 RSUs at Accelerant Holdings (ARX)?

The RSUs vest 25% on the one‑year anniversary of the May 13, 2026 grant date. The remaining units vest 6.25% on the first day of each of twelve calendar quarters thereafter, creating a multi‑year vesting period that encourages long‑term retention and performance alignment.

How many Accelerant Holdings (ARX) Class A shares does the COO hold after this RSU grant?

After the RSU award, Sternberg holds 617,960 Class A common shares directly. This figure reflects his ownership position immediately following the grant, highlighting meaningful ongoing exposure to Accelerant Holdings’ equity alongside other shareholders through stock-based compensation.

Do the granted RSUs for Accelerant Holdings (ARX) involve any cash payment by the COO?

The reported RSU grant lists a transaction price of 0.0000 per share, indicating no cash payment by Sternberg for the award. As equity compensation, the units convert into Class A common shares upon vesting and settlement, subject to the disclosed vesting schedule.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 05/15/2026 - 09:50 PM EDT 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^*

Sternberg Matthew David

(Last) (First) (Middle)

UNIT 106, WINDWARD 3

REGATTA OFFICE PARK, WEST BAY ROAD

(Street)

GRAND CAYMAN KY1-1108

(City) (State) (Zip)

CAYMAN ISLANDS

(Country)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	COO, Risk Exchange

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

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	05/13/2026		A		279,329(1)	A	$0	617,960	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 ("RSUs") granted on May 13, 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. Each RSU represents a contingent right to receive one Class A common share upon settlement.

Remarks:

	/s/ David Pelsue, Attorney-in-Fact	05/15/2026
	** 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)