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Accelerant Holdings (ARX) co-founder-linked entity sells 147,000 shares under 10b5-1 plan

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Accelerant Holdings co-founder-related entity sells shares under 10b5-1 plan

Famed Ventures Limited, an entity associated with Co‑Founder and Chief Underwriting Officer Francis James O’Neill, sold a total of 147,000 Class A Common Shares in open‑market transactions on June 25 and 26 under a pre‑arranged Rule 10b5‑1 trading plan. The shares were sold at weighted average prices of $13.0582 and $13.1823 across multiple trades. After these sales, O’Neill’s indirect holdings through Famed Ventures Limited were 6,903,125 Class A shares, and his direct holdings were 166,644 Class A shares.

Positive

  • None.

Negative

  • None.
Insider ONeill Francis James
Role Co-Founder, Chief U/W Officer
Sold 147,000 shs ($1.93M)
Type Security Shares Price Value
Sale Class A Common Shares 73,500 $13.1823 $969K
Sale Class A Common Shares 73,500 $13.0582 $960K
holding Class A Common Shares -- -- --
Holdings After Transaction: Class A Common Shares — 6,903,125 shares (Indirect, By Famed Ventures Limited); Class A Common Shares — 166,644 shares (Direct, null)
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 $12.79 to $13.25, 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 $12.8750 to $13.78, 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.
Shares sold total 147,000 shares Open-market sales on June 25 and 26, 2026
June 25 weighted average price $13.0582 per share 73,500 Class A Common Shares sold
June 26 weighted average price $13.1823 per share 73,500 Class A Common Shares sold
Indirect holdings after trades 6,903,125 shares Class A Common Shares held via Famed Ventures Limited after June 26 sale
Direct holdings after trades 166,644 shares Class A Common Shares held directly as of June 25, 2026
Rule 10b5-1 trading plan regulatory
"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."
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.
Class A Common Shares financial
"security_title: Class A Common Shares"
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).
open-market sale financial
"transaction_action: open-market sale"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
indirect ownership financial
"direct_or_indirect: I, nature_of_ownership: By Famed Ventures Limited"
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Form 4 Insider Transactions: What Each Field Means →
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)
06/25/2026		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 Shares06/25/2026S73,500(1)D$13.0582(2)6,976,625IBy Famed Ventures Limited
Class A Common Shares06/26/2026S73,500(1)D$13.1823(3)6,903,125IBy 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 $12.79 to $13.25, 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 $12.8750 to $13.78, 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'Neill06/29/2026
** 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)

Source: View Original Filing on SEC EDGAR

FAQ

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

Accelerant Holdings reported that an entity associated with Francis James O’Neill, Famed Ventures Limited, sold 147,000 Class A Common Shares in open‑market transactions. These sales occurred on June 25 and 26, 2026, and were disclosed on a Form 4 insider trading report.

At what prices were the Accelerant Holdings (ARX) shares sold in this Form 4?

The reported sales used weighted average prices of $13.0582 and $13.1823 per Class A Common Share. Footnotes explain the shares were sold in multiple trades, with prices ranging from $12.79 to $13.78, and detailed breakdowns are available upon request from the company or regulators.

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

Yes. The filing states the sales were effected pursuant to a Rule 10b5‑1 trading plan adopted by the reporting person on March 23, 2026. Such plans pre‑schedule trades, helping separate routine portfolio management from discretionary market‑timed insider activity.

How many Accelerant Holdings (ARX) shares does Francis James O’Neill hold after the reported sales?

Following the reported transactions, O’Neill’s indirect holdings through Famed Ventures Limited were 6,903,125 Class A Common Shares. In addition, his direct holdings were 166,644 Class A Common Shares, giving investors a view of his remaining economic exposure after the sales.

Who actually held the Accelerant Holdings (ARX) shares sold in this Form 4 filing?

The sold shares were held indirectly through Famed Ventures Limited, as noted in the ownership description. The Form 4 attributes the open‑market sales to this entity, which is associated with Francis James O’Neill, rather than to him individually holding the shares directly.

How many Accelerant Holdings (ARX) shares were sold on each transaction date?

The filing reports 73,500 Class A Common Shares sold on June 25, 2026, and another 73,500 shares sold on June 26, 2026. Together, these open‑market sales by Famed Ventures Limited totaled 147,000 Class A Common Shares over the two days.