Accelerant director plans sale of 542 ARX shares

Accelerant Holdings (symbol ARX) has a notice of proposed sale filed under Rule 144 for common shares held by director Karen Sue Meriwether.

Rhea-AI Filing Summary

Accelerant Holdings (symbol ARX) has a notice of proposed sale filed under Rule 144 for common shares held by director Karen Sue Meriwether. The notice covers the potential sale of 542 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services, with an indicated aggregate value of $10,631.38, to be sold on the NYSE. The securities were acquired in an open market purchase for cash. No other sales by this person are listed for the prior three months.

Key Figures

Shares proposed to be sold: 542 shares Aggregate market value: $10,631.38 Planned sale date: 08/21/2026 +3 more

6 metrics

Shares proposed to be sold 542 shares Common stock covered by the Rule 144 notice

Aggregate market value $10,631.38 Value associated with the 542 common shares in the Rule 144 section

Planned sale date 08/21/2026 Date listed with the common stock in the securities information section

Acquisition date 12/08/2025 Date shown in the Securities To Be Sold section as the open market purchase date

Issuer SEC file number 001-42765 SEC file number for Accelerant Holdings as stated in issuer information

Broker Morgan Stanley Smith Barney LLC Executive Financial Services Named as the broker handling the proposed sale

Key Terms

Rule 144, Open Market Purchase, Executive Financial Services

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Open Market Purchase financial

"Common | 12/08/2025 | Open Market Purchase | Open Market"

An open market purchase is when a company buys its own shares on public stock exchanges the same way any investor would, rather than through a private deal. Investors care because these purchases reduce the number of shares available, can boost earnings per share and share price, signal that management thinks the stock is undervalued, and use company cash that might otherwise go to reinvestment or dividends — like a business quietly buying back its own tickets at the box office.

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

FAQ

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

What does the Form 144 filing by ARX director Karen Meriwether disclose?

It discloses a proposed sale under Rule 144 by director Karen Sue Meriwether of up to 542 shares of Accelerant Holdings common stock, to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services on the NYSE.

How many ARX shares are covered by Karen Meriwether’s Form 144 notice?

The notice covers up to 542 shares of Accelerant Holdings common stock. These shares are the subject of the proposed disposition under Rule 144 and are planned for sale through a brokerage account at Morgan Stanley Smith Barney LLC Executive Financial Services.

What is the approximate value of the ARX shares in Karen Meriwether’s planned Rule 144 sale?

The filing shows an aggregate market value of $10,631.38 for the 542 Accelerant Holdings common shares covered by the notice, based on the pricing information included in the Rule 144 securities information section.

How and where will the ARX shares in this Form 144 be sold?

The filing states the common shares are to be sold on the NYSE through Morgan Stanley Smith Barney LLC Executive Financial Services. The method listed is an open market transaction, with cash as the form of payment for the original acquisition.

Were there any ARX shares sold by Karen Meriwether in the past three months before this Form 144?

The section for Securities Sold During The Past 3 Months does not list any transactions, indicating no other reported sales of Accelerant Holdings common stock by Karen Meriwether in that period within this notice.

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

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Available on EDGAR 08/21/2026 - 04:12 PM EDT Accepted by SEC EDGAR 08/21/2026 - 04:11 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002009232
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ACCELERANT HOLDINGS
SEC File Number	001-42765
Address of Issuer	P.O. BOX 309 UGLAND HOUSE GRAND CAYMAN CAYMAN ISLANDS KY1-1044
Phone	(302) 658-7581
Name of Person for Whose Account the Securities are To Be Sold	KAREN MERIWETHER
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	542	10631.38	118548679	08/21/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	12/08/2025	Open Market Purchase	Open Market			542	12/08/2025	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	08/21/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Karen Sue Meriwether
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)