Keoni Andrew Schwartz - 25 Jul 2025 Form 4 Insider Report for Accelerant Holdings (ARX)

Reporting relationship: Director, 10%+ Owner
Issuer ticker: ARX
Reported as of: 25 Jul 2025
Net transaction value: -$272,223,098
SEC form: 4
Accepted by SEC: 29 Jul 2025, 20:36:24 UTC
Prior SEC filing: 23 Jul 2025
Source filing: View source filing
Reporting owner signature: Keoni Andrew Schwartz, By: /s/ Robert Hardy, Attorney-in-Fact

Key filing fact

Keoni Andrew Schwartz filed Form 4 for Accelerant Holdings (ARX) on 29 Jul 2025.

Key facts

This page summarizes Keoni Andrew Schwartz's Form 4 filing for Accelerant Holdings (ARX).
21 reported transactions and 13 derivative rows are listed below.
Accepted by SEC: 29 Jul 2025, 20:36.

Change

Previous filing in this sequence was filed on 23 Jul 2025.
Current net transaction value: -$272,223,098.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (3)

CIK 0002009246 Primary reporting owner

Schwartz Keoni Andrew

Relationship: Director, 10%+ Owner
Address: 400 HAMILTON AVENUE, SUITE 230, PALO ALTO
Signature: Keoni Andrew Schwartz, By: /s/ Robert Hardy, Attorney-in-Fact
Signature date: 29 Jul 2025

CIK 0002078270

ACP Accelerant Holdings, L.P.

Relationship: 10%+ Owner
Address: 400 HAMILTON AVENUE, SUITE 230, PALO ALTO
Signature: ACP Accelerant Holdings, L.P., By: /s/ Jennifer Mello, Attorney-in-Fact
Signature date: 29 Jul 2025

CIK 0002078277

ACP Insurance Management, LLC

Relationship: 10%+ Owner
Address: 400 HAMILTON AVENUE, SUITE 230, PALO ALTO
Signature: ACP Insurance Management, LLC, By: /s/ Jennifer Mello, Attorney-in-Fact
Signature date: 29 Jul 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ARX transaction

Class A Common Shares

Conversion of derivative security

Transaction value
Shares: +8,111,253
Change %
Price
Shares after: 8,111,253
Date: 25 Jul 2025
Ownership: See Footnote
Footnotes: F2, F4

ARX transaction

Class A Common Shares

Sale

Transaction value: $170,336,313
Shares: -8,111,253
Change %: -100%
Price: $21.00
Shares after: 0
Date: 25 Jul 2025
Ownership: See Footnote
Footnotes: F2, F4

ARX transaction

Class A Common Shares

Conversion of derivative security

Transaction value
Shares: +2,670,456
Change %
Price
Shares after: 2,670,456
Date: 25 Jul 2025
Ownership: See Footnote
Footnotes: F4, F5

ARX transaction

Class A Common Shares

Sale

Transaction value: $56,079,576
Shares: -2,670,456
Change %: -100%
Price: $21.00
Shares after: 0
Date: 25 Jul 2025
Ownership: See Footnote
Footnotes: F4, F5

ARX transaction

Class A Common Shares

Conversion of derivative security

Transaction value
Shares: +488,131
Change %
Price
Shares after: 488,131
Date: 25 Jul 2025
Ownership: See Footnote
Footnotes: F4, F7

ARX transaction

Class A Common Shares

Sale

Transaction value: $10,250,751
Shares: -488,131
Change %: -100%
Price: $21.00
Shares after: 0
Date: 25 Jul 2025
Ownership: See Footnote
Footnotes: F4, F7

ARX transaction

Class A Common Shares

Conversion of derivative security

Transaction value
Shares: +326,312
Change %
Price
Shares after: 326,312
Date: 25 Jul 2025
Ownership: See Footnote
Footnotes: F4, F8

ARX transaction

Class A Common Shares

Sale

Transaction value: $6,852,552
Shares: -326,312
Change %: -100%
Price: $21.00
Shares after: 0
Date: 25 Jul 2025
Ownership: See Footnote
Footnotes: F4, F8

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ARX transaction Derivative

LP Interests of Accelerant Holdings LP

Conversion of derivative security

Transaction value: $0
Shares: -8,491,134,079
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class B Common Shares
Underlying amount: 90,196,595
Exercise price
Footnotes: F1, F2

ARX transaction Derivative

Class B Common Shares

Conversion of derivative security

Transaction value
Shares: +90,196,595
Change %
Price
Shares after: 90,196,595
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class A Common Shares
Underlying amount: 90,196,595
Exercise price
Footnotes: F1, F2, F3

ARX transaction Derivative

Class B Common Shares

Conversion of derivative security

Transaction value
Shares: -8,111,253
Change %: -9%
Price
Shares after: 82,085,342
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class A Common Shares
Underlying amount: 8,111,253
Exercise price
Footnotes: F2, F3, F4

ARX transaction Derivative

LP Interests of Accelerant Holdings LP

Conversion of derivative security

Transaction value: $0
Shares: -100
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class B Common Shares
Underlying amount: 2,670,456
Exercise price
Footnotes: F1, F5

ARX transaction Derivative

Class B Common Shares

Conversion of derivative security

Transaction value
Shares: +2,670,456
Change %
Price
Shares after: 2,670,456
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class A Common Shares
Underlying amount: 2,670,456
Exercise price
Footnotes: F1, F3, F5

ARX transaction Derivative

Class B Common Shares

Conversion of derivative security

Transaction value
Shares: -2,670,456
Change %: -100%
Price
Shares after: 0
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class A Common Shares
Underlying amount: 2,670,456
Exercise price
Footnotes: F3, F4, F5

ARX transaction Derivative

Convertible Preference Shares

Conversion of derivative security

Transaction value: $0
Shares: -5,427,970
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class B Common Shares
Underlying amount: 5,427,970
Exercise price
Footnotes: F6, F7

ARX transaction Derivative

Class B Common Shares

Conversion of derivative security

Transaction value
Shares: +5,427,970
Change %
Price
Shares after: 5,427,970
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class A Common Shares
Underlying amount: 5,427,970
Exercise price
Footnotes: F1, F3, F7

ARX transaction Derivative

Class B Common Shares

Conversion of derivative security

Transaction value
Shares: -488,131
Change %: -9%
Price
Shares after: 4,939,839
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class A Common Shares
Underlying amount: 488,131
Exercise price
Footnotes: F3, F4, F7

ARX transaction Derivative

Convertible Preference Shares

Conversion of derivative security

Transaction value: $0
Shares: -3,628,575
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class B Common Shares
Underlying amount: 3,628,575
Exercise price
Footnotes: F6, F8

ARX transaction Derivative

Class B Common Shares

Conversion of derivative security

Transaction value
Shares: +3,628,575
Change %
Price
Shares after: 3,628,575
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class A Common Shares
Underlying amount: 3,628,575
Exercise price
Footnotes: F1, F3, F8

ARX transaction Derivative

Class B Common Shares

Conversion of derivative security

Transaction value
Shares: -326,312
Change %: -9%
Price
Shares after: 3,302,263
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Class A Common Shares
Underlying amount: 326,312
Exercise price
Footnotes: F3, F4, F8

ARX transaction Derivative

Redeemable Preference Shares

Other

Transaction value: $28,703,906
Shares: -909,791
Change %: -100%
Price: $31.55
Shares after: 0
Date: 25 Jul 2025
Ownership: See Footnote
Underlying class: Common Shares
Underlying amount: 909,791
Exercise price
Footnotes: F7, F9

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 9 footnotes

Footnote F1

In connection with the Issuer's initial public offering ("IPO"), these limited partnership interests of Accelerant Holdings LP were exchanged for Class B Common Shares of the Issuer in proportion to the economic interests represented by the limited partnership interests.

Footnote F2

These securities are held directly by ACP Accelerant Holdings, L.P. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Keoni Schwartz ("Mr. Schwartz"), as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any.

Footnote F3

Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO.

Footnote F4

These Class B Common Shares converted into Class A Common Shares on a 1-for-1 basis and then were sold pursuant to an underwriting agreement dated as of July 23, 2025, by and among the Issuer, the selling stockholders, and the underwriters named therein in connection with the Issuer's IPO.

Footnote F5

These securities are held directly by ACP Accelerant Investment Holding Company, Ltd. ACP Accelerant Holdings, L.P. is the sole owner of ACP Accelerant Investment Holding Company, Ltd. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any.

Footnote F6

In connection with the Issuer's IPO, these shares of the Issuer's Preference Shares automatically converted into Class B Common Shares of the Issuer at a 1-for-1 conversion rate.

Footnote F7

These securities are held directly by ACP Accelerant Co-Invest, LLC. Each of (i) ACP Insurance Management, LLC, as the managing member of ACP Accelerant Co-Invest, LLC, and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any.

Footnote F8

These securities are held directly by ACP Accelerant Investment Holding Company II, Ltd. ACP Accelerant Holdings, L.P. is the sole owner of ACP Accelerant Investment Holding Company II, Ltd. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any.

Footnote F9

In connection with the Issuer's IPO, ACP Accelerant Co-Invest, LLC elected to have these Redeemable Preference Shares redeemed at a redemption price of $31.55 per share.