ARX insider ownership: who sold, why, and what they still hold

What stands out

Three insiders bought shares: Samuel Gaynor (7.5K shares, $101K), Matthew Sternberg (5.7K shares, $75K) and Karen Meriwether (542 shares, $8K). These are the first purchases by current officers or directors in the filings on record.Samuel Gaynor: purchase, Nov 19, 2025 · Matthew Sternberg: purchase, Nov 17, 2025 · Karen Meriwether: purchase, Dec 8, 2025

Selling picked up in the last 90 days: officers and directors sold 742K shares, against an average of 288K per 90 days earlier in the period. Most of it was Francis ONeill (368K shares in the last 90 days) and Jeffrey Radke (335K shares in the last 90 days); 99.9% of these sales were under disclosed plans.Francis ONeill: largest recent sale, Jul 27, 2026 · Jeffrey Radke: largest recent sale, Jul 27, 2026

A share of stake is shown for 0 of the 6 officers and directors who sold. 15 are left out

Left out: Keoni Schwartz, Jeffrey Radke, Christopher Lee-Smith, Francis ONeill, Nancy Hasley, Jay Green, Linda Huber, Matthew Sternberg, Wendy Harrington, Paul Little, Karen Meriwether, Samuel Gaynor, Clifford Jenks, Simon Wainwright and David Talach (share of stake is being verified).

Disclosed company stock is not an insider's whole wealth.

Who sold, and how much of their stake

Officers and directors, past 12 months. Their share of stake is being verified and is not shown yet; amounts and trading plans are below.

Francis ONeill

Co-Founder, Chief U/W Officer

Not confirmed

Share of stake not shown: share of stake is being verified. Why

$11.0MDisclosed plan

Jeffrey Radke

Co-Founder, CEO, Director

Not confirmed

Share of stake not shown: share of stake is being verified. Why

$8.8MDisclosed plan

Nancy Hasley

Director

Not confirmed

Share of stake not shown: share of stake is being verified. Why

$860KDisclosed plan

Jay Green

Chief Financial Officer

Not confirmed

Share of stake not shown: share of stake is being verified. Why

$638KDisclosed plan

Matthew Sternberg

COO, Risk Exchange

Not confirmed

Share of stake not shown: share of stake is being verified. Why

$257KDisclosed plan

All 6 sellers

Selling by month

Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planNo plan disclosedOne dollar scale for every month; the tallest bar is labeled

Recent activity

Past 30 days, Sep 17, 2026 to Oct 16, 2026

No officer or director trades were reported for the past 30 days. The most recent before that:

Aug 21, 2026Karen Meriwether sold 542 shares ($11K) with no plan disclosed.

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Karen Meriwether Director	542	$19.62	n/a	n/a	Aug 21, 2026	Aug 25, 2026

Outside holders, reported separately

Keoni Schwartz reported no open-market sales in the past 12 months. Large shareholders and the funds or companies that board members represent are not part of management, so they are left out of the figures above.

Details

Common questions

Is the Accelerant Holdings CEO selling stock?

Yes. Jeffrey Radke sold 670K shares ($8.8M) in the past 12 months, all of it under a trading plan disclosed in the filings.

Why are Accelerant Holdings insiders selling?

Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 100.0% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 0.0% had no disclosed plan. A trading plan schedules sales in advance.

Are any Accelerant Holdings insiders buying?

Yes. 3 officers or directors reported 3 purchases in the past 12 months (Form 4 code P; rows the filings describe as reinvested dividends, plan purchases, private deals or moves into the person's own trust are not counted).

The evidence

Who sold6 officers and directors: amount, % of holdings, trading plan

Who sold	Amount	% of holdings	Trading plan
Francis ONeill Co-Founder, Chief U/W Officer	$11.0M 828K shares	Not confirmed share of stake is being verified. Why	Disclosed plan
Jeffrey Radke Co-Founder, CEO, Director	$8.8M 670K shares	Not confirmed share of stake is being verified. Why	Disclosed plan
Nancy Hasley Director	$860K 55K shares	Not confirmed share of stake is being verified. Why	Disclosed plan
Jay Green Chief Financial Officer	$638K 50K shares	Not confirmed share of stake is being verified. Why	Disclosed plan
Matthew Sternberg COO, Risk Exchange	$257K 18K shares	Not confirmed share of stake is being verified. Why	Disclosed plan
Karen Meriwether Director	$11K 542 shares	Not confirmed share of stake is being verified. Why	No plan disclosed

Board members representing outside shareholders, reported separately: Keoni Schwartz. Details

The full ownership picture0 of 15 officers and directors confirmed

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

Insider

Held Oct 16, 2025

Sold

Held Oct 16, 2026

Still held

Keoni Schwartz

Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Keoni Schwartz are complete.

Director

n/a

Vesting, gifts, unvested awards and holding lines for Keoni Schwartz

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Keoni Schwartz are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Jeffrey Radke

Co-Founder, CEO, Director

n/a

−670K

n/a

Vesting, gifts, unvested awards and holding lines for Jeffrey Radke

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Jeffrey Radke are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
8,279,552	$21.00	Jul 23, 2035	$0

Estimate: options held × ($19.62 − strike price), using the most recent insider trade price on Form 4 (Aug 21, 2026), not a market close.

Christopher Lee-Smith

Co-Founder, Head of Distrib., Director

n/a

Vesting, gifts, unvested awards and holding lines for Christopher Lee-Smith

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Christopher Lee-Smith are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
2,746,261	$21.00	Jul 23, 2035	$0

Estimate: options held × ($19.62 − strike price), using the most recent insider trade price on Form 4 (Aug 21, 2026), not a market close.

Francis ONeill

Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. See the filing Sales and other transactions for Francis ONeill are complete.

Co-Founder, Chief U/W Officer

n/a

−828K

n/a

Vesting, gifts, unvested awards and holding lines for Francis ONeill

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Francis ONeill are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
882,611	$21.00	Jul 23, 2035	$0

Estimate: options held × ($19.62 − strike price), using the most recent insider trade price on Form 4 (Aug 21, 2026), not a market close.

Nancy Hasley

Director

n/a

−55K

n/a

Vesting, gifts, unvested awards and holding lines for Nancy Hasley

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Nancy Hasley are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Jay Green

Chief Financial Officer

n/a

−50K

n/a

Vesting, gifts, unvested awards and holding lines for Jay Green

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Jay Green are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

−229Kwithheld by the company for taxes

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
1,087,948	$19.30	Sep 1, 2033	$343K

Estimate: options held × ($19.62 − strike price), using the most recent insider trade price on Form 4 (Aug 21, 2026), not a market close.

Linda Huber

Chief Financial Officer

n/a

Vesting, gifts, unvested awards and holding lines for Linda Huber

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Linda Huber are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Matthew Sternberg

COO, Risk Exchange

n/a

−18K

n/a

Vesting, gifts, unvested awards and holding lines for Matthew Sternberg

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Matthew Sternberg are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

−3.9Kwithheld by the company for taxes

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
884,465	$19.30	Sep 1, 2033	$279K
884,464	$19.31	Sep 1, 2033	$270K

Estimate: options held × ($19.62 − strike price), using the most recent insider trade price on Form 4 (Aug 21, 2026), not a market close.

Wendy Harrington

Director

n/a

Vesting, gifts, unvested awards and holding lines for Wendy Harrington

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Wendy Harrington are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
209,515	$21.00	Jul 23, 2035	$0

Estimate: options held × ($19.62 − strike price), using the most recent insider trade price on Form 4 (Aug 21, 2026), not a market close.

Paul Little

Director

n/a

Vesting, gifts, unvested awards and holding lines for Paul Little

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Paul Little are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
165,832	$19.30	Mar 12, 2034	$52K
165,831	$19.31	Mar 12, 2034	$51K

Estimate: options held × ($19.62 − strike price), using the most recent insider trade price on Form 4 (Aug 21, 2026), not a market close.

Karen Meriwether

Director

n/a

−542

n/a

Vesting, gifts, unvested awards and holding lines for Karen Meriwether

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Karen Meriwether are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Samuel Gaynor

Director

n/a

Vesting, gifts, unvested awards and holding lines for Samuel Gaynor

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Samuel Gaynor are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Clifford Jenks

General Counsel

n/a

Vesting, gifts, unvested awards and holding lines for Clifford Jenks

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Clifford Jenks are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Simon Wainwright

Director

n/a

Vesting, gifts, unvested awards and holding lines for Simon Wainwright

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Simon Wainwright are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

David Talach

Director

n/a

Vesting, gifts, unvested awards and holding lines for David Talach

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for David Talach are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Holdings and share of stake for Accelerant Holdings are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.

What explains the selling$21.6M of sales by plan status, purpose, seller and month

Officer and director open-market sales: $21.6M across 1,621,434 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

Disclosed plan · $21.6M · 100.0%

0.0%

The lighter segment is sales with no plan disclosed in the filing ($11K), including tax-related sales outside a plan.

No plan disclosed · $11K

Sales with no 10b5-1 plan and no tax reference in the filing. $11K of it is Karen Meriwether. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: Karen Meriwether, Aug 21, 2026

Taxes

233,172 shares ($2.9M) were withheld by the company for taxes, which isn't a market sale.

Purchases · 3 buyers (3 trades)

3 officers and directors bought shares in this period, in 3 trades(Form 4 code P, leaving out rows the filings describe as reinvested dividends, plan purchases, private deals or moves into the person's own trust). Across all their filings on record there are 3 purchase trades.

Seller	Shares sold	Proceeds	Under a disclosed plan	Share of total	Sales dates
Francis ONeill Co-Founder, Chief U/W Officer	828K	$11.0M	100%	51%	Jun 22, 2026 to Aug 11, 2026
Jeffrey Radke Co-Founder, CEO, Director	670K	$8.8M	100%	41%	Jun 23, 2026 to Aug 10, 2026
Nancy Hasley Director	55K	$860K	100%	4%	Jun 23, 2026 to Aug 13, 2026
Jay Green Chief Financial Officer	50K	$638K	100%	3%	Mar 23, 2026 to Mar 23, 2026
Matthew Sternberg COO, Risk Exchange	18K	$257K	100%	1%	Jul 27, 2026 to Jul 27, 2026
Karen Meriwether Director	542	$11K	0%	0.0%	Aug 21, 2026 to Aug 21, 2026

Sales by month

Month	Sale proceeds	Disclosed plan	To cover taxes	No plan disclosed
Oct 2025	$0	$0	$0	$0
Nov 2025	$0	$0	$0	$0
Dec 2025	$0	$0	$0	$0
Jan 2026	$0	$0	$0	$0
Feb 2026	$0	$0	$0	$0
Mar 2026	$638K	$638K	$0	$0
Apr 2026	$0	$0	$0	$0
May 2026	$0	$0	$0	$0
Jun 2026	$6.4M	$6.4M	$0	$0
Jul 2026	$10.3M	$10.3M	$0	$0
Aug 2026	$4.2M	$4.2M	$0	$11K
Sep 2026	$0	$0	$0	$0
Oct 2026	$0	$0	$0	$0

Board members representing outside shareholders (1)Listed and sourced; not part of the management totals or the answer line

Directors whose reported holdings sit mostly in an investment fund or a corporate shareholder they represent, not in their own name, with beneficial ownership disclaimed except for their own financial interest. Listed and sourced here; not part of the management totals or the answer line. Shares a fund hands to its own investors are distributions, not sales.

Board member	Held Oct 16, 2025	Sold	Held Oct 16, 2026	Still held
Keoni Schwartz ! Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Keoni Schwartz are complete. Director	n/a	0	n/a	n/a
Vesting, gifts, unvested awards and holding lines for Keoni Schwartz Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Keoni Schwartz are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts)

Known gaps and uncertainty15 officers and directors not confirmed

Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Accelerant Holdings are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.

External context: we only cite outside events when a documented connection exists. None is shown for this period.

Sources and methodology69 filings on record, 40 filed in the 12-month period, and how we read them

All 69 Forms 3, 4 and 5 on record for Accelerant Holdings (SEC CIK 1997350), filed from Jul 23, 2025 to Aug 25, 2026; 40 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 16, 2026. Prices are the ones reported in each filing, often weighted averages.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology

Former or inactive filers (2)No filing in 18 months; last reported balances, not in any total

Name	Last filed	Last reported balance
Kunal Arora		No balance on record
Michael Searles		No balance on record

Spotted something wrong on this page? Report an error. We check every report against the SEC filing and list what we fix in the corrections log.

Accelerant Holdings insiders sold $21.6M in the past 12 months. How much of their stake is that?

What stands out

Who sold, and how much of their stake

Selling by month

Recent activity

Outside holders, reported separately

Common questions

Is the Accelerant Holdings CEO selling stock?

Why are Accelerant Holdings insiders selling?

Are any Accelerant Holdings insiders buying?

The evidence

No plan disclosed · $11K

Taxes

Purchases · 3 buyers (3 trades)

Sales by month