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Accelerant Holdings (NYSE: ARX) co-founder’s entity sells 165,886 shares

(Very High)
(Negative)
Form Type
4

Rhea-AI Filing Summary

Accelerant Holdings co-founder and Chief Underwriting Officer Francis James O’Neill, through entity Famed Ventures Limited, executed open-market sales of 165,886 Class A Common Shares on July 14–15, 2026 at weighted average prices of $12.8447 and $12.7110 per share pursuant to a Rule 10b5-1 trading plan adopted on March 23, 2026. Following these transactions, Famed Ventures Limited holds 6,737,239 Class A Common Shares indirectly for him, and he also holds 166,644 shares directly.

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Insider ONeill Francis James
Role Co-Founder, Chief U/W Officer
Sold 165,886 shs ($2.12M)
Type Security Shares Price Value
Sale Class A Common Shares 82,767 $12.711 $1.05M
Sale Class A Common Shares 83,119 $12.8447 $1.07M
holding Class A Common Shares -- -- --
Holdings After Transaction: Class A Common Shares — 6,737,239 shares (Indirect, By Famed Ventures Limited); Class A Common Shares — 166,644 shares (Direct)
Footnotes (1)
  1. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 23, 2026. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.61 to $13.38, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.37 to $12.89, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Total shares sold 165,886 Class A Common Shares Aggregate open-market sales on July 14–15, 2026 by Famed Ventures Limited
Shares sold on 2026-07-14 83,119 Class A Common Shares Open-market sale at a weighted average price of $12.8447 per share
Shares sold on 2026-07-15 82,767 Class A Common Shares Open-market sale at a weighted average price of $12.7110 per share
Indirect holdings after sales 6,737,239 Class A Common Shares Shares held indirectly through Famed Ventures Limited after July 15, 2026
Direct holdings reported 166,644 Class A Common Shares Shares held directly by Francis James O’Neill as of July 14, 2026
Rule 10b5-1 trading plan regulatory
"The sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
indirect ownership financial
"Ownership is reported as indirect with nature of ownership "By Famed Ventures Limited"."

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

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FAQ

What insider share sales did Accelerant Holdings (ARX) report for Francis James O’Neill?

An entity associated with co-founder Francis James O’Neill, Famed Ventures Limited, sold 165,886 Class A Common Shares of Accelerant Holdings (ARX) in open-market transactions on July 14–15, 2026 at weighted average prices of $12.8447 and $12.7110 per share.

Were the Accelerant Holdings (ARX) insider sales made under a Rule 10b5-1 trading plan?

Yes. The reported sales were effected under a Rule 10b5-1 trading plan adopted by Francis James O’Neill on March 23, 2026, indicating the transactions were pre-arranged rather than discretionary trades based on short-term market movements.

How many Accelerant Holdings (ARX) shares does Francis James O’Neill still own after these transactions?

After the reported sales, Famed Ventures Limited holds 6,737,239 Class A Common Shares indirectly on O’Neill’s behalf, and he also holds 166,644 Class A Common Shares directly, according to the ownership figures reported as of mid-July 2026.

At what prices were the Accelerant Holdings (ARX) insider share sales executed?

The July 14, 2026 sale of 83,119 shares occurred at a weighted average price of $12.8447 per share, while the July 15, 2026 sale of 82,767 shares occurred at a weighted average price of $12.7110 per share.

Were the Accelerant Holdings (ARX) insider trades direct or through an affiliated entity?

The reported sales involved indirect ownership, with the shares held and sold "By Famed Ventures Limited." O’Neill also reports a separate direct holding of 166,644 Class A Common Shares, which was not shown as changing in these transactions.
SEC Form 4
FORM 4UNITED 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).
X
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*
ONeill Francis James

(Last)(First)(Middle)
UNIT 106, WINDWARD 3
REGATTA OFFICE PARK, WEST BAY ROAD

(Street)
GRAND CAYMANKY1-1108

(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Co-Founder, Chief U/W Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/14/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Class A Common Shares07/14/2026S83,119(1)D$12.8447(2)6,820,006IBy Famed Ventures Limited
Class A Common Shares07/15/2026S82,767(1)D$12.711(3)6,737,239IBy Famed Ventures Limited
Class A Common Shares166,644D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 23, 2026.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.61 to $13.38, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.37 to $12.89, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Remarks:
/s/ Robert L. Villasenor, attorney-in-fact for Francis James O'Neill07/16/2026
** Signature of Reporting PersonDate
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)