ARX insider amends Form 3: 884,464 option shares at $19.31

Accelerant Holdings (ARX) – Insider Ownership Update COO Matthew David Sternberg filed an amended Form 3 reporting one derivative position: an employee stock option covering 884,464 Class A shares at an exercise price of $19.31.

Rhea-AI Filing Summary

Accelerant Holdings (ARX) – Insider Ownership Update

COO Matthew David Sternberg filed an amended Form 3 reporting one derivative position: an employee stock option covering 884,464 Class A shares at an exercise price of $19.31. Twenty-five percent vested after one year; the remaining 75 % vest in 6.25 % quarterly tranches over the next three years. The option expires 09/01/2033. The amendment corrects the 07/23/2025 filing, which overstated the share count by one share and understated the exercise price by $0.01. No non-derivative holdings were disclosed, and the filing does not alter share count, dilution, or cash flow for existing investors.

Insights

Securities Analyst

TL;DR: Clerical correction; no financial impact or signal on ARX fundamentals.

The amendment merely fixes a one-share and $0.01 error in the original Form 3. Sternberg’s option size and strike are now accurately disclosed, but the economic exposure is unchanged. Such filings are routine and do not influence valuation, liquidity, or insider-sentiment analysis. No new purchases or sales occurred.

Corporate Governance Expert

TL;DR: Accuracy of insider data improved; governance impact neutral.

Timely correction reflects good compliance practice under Section 16(a). The misstatement was de-minimis and quickly rectified, limiting litigation or regulatory risk. Investors should view this as administrative housekeeping rather than a governance red flag.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Sternberg Matthew David

Role COO, Risk Exchange

Type	Security	Shares	Price	Value
holding	Stock Option (Right to Buy)	--	--	--

Holdings After Transaction: Stock Option (Right to Buy) — 884,464 contracts (Direct)

Footnotes (1)

1. F1. Twenty-five percent (25%) of the Class A Common Shares subject to the option vested on the one-year anniversary of the first day of the first month following the vesting commencement date, and the remaining Class A Common Shares subject to the option vest in 6.25% quarterly installments on each of the 12 subsequent 3-month anniversaries of the vesting commencement date, in each case subject to the Reporting Person's continuous service.

FAQ

How many Accelerant Holdings shares are covered by COO Matthew Sternberg’s option?

The amended Form 3 reports 884,464 Class A shares underlying the stock option.

What is the exercise price of the reported stock option for ARX?

The option can be exercised at $19.31 per Class A share.

What is the vesting schedule of Sternberg’s ARX stock option?

25 % vested after one year; the remaining 75 % vest in 6.25 % quarterly increments over the next three years.

Why did Accelerant Holdings file an amended Form 3/A on 07/29/2025?

The amendment corrects an overstatement of one share and an understatement of $0.01 in the original 07/23/2025 filing.

When does Sternberg’s stock option in Accelerant Holdings expire?

The option expires on 09/01/2033.

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

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Accepted by SEC EDGAR 07/29/2025 - 08:16 PM Learn about SEC filing dates

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

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 E9 KY1-1108

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
07/23/2025

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

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

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

5. If Amendment, Date of Original Filed (Month/Day/Year)
07/23/2025

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

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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	(1)	09/01/2033	Class A Common Shares	884,464	$19.31	D

Explanation of Responses:

1. Twenty-five percent (25%) of the Class A Common Shares subject to the option vested on the one-year anniversary of the first day of the first month following the vesting commencement date, and the remaining Class A Common Shares subject to the option vest in 6.25% quarterly installments on each of the 12 subsequent 3-month anniversaries of the vesting commencement date, in each case subject to the Reporting Person's continuous service.

Remarks:

This amendment to Form 3 is being filed to correct the quantity of shares underlying the reported stock option and the exercise price of the reported stock option, which were inadvertently overreported by one share and underreported by one penny, respectively, in the Form 3 filed by the Reporting Person on July 23, 2025.

	/s/ Robert Hardy, Attorney-in-Fact	07/29/2025
	** 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 5 (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.