Accelerant Holdings Ltd (ARX) Insider Trading

Last 12 months

Insiders bought $1.89M and sold $21.6M on the open market.

All of the selling was scheduled in advance under 10b5-1 plans.

Net open-market

−$19.7M

6 buys · 18 sales

Under a 10b5-1 plan

100%

of the value sold

Insiders who bought / sold

6 / 6

executives and directors

Last open-market buy

Dec 2025

Dec 8, 2025

Get an email when ARX's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Aug 21	Karen Sue Meriwether Director	SoldNo plan	542	$19.62	$11k	2.5%	Form 4
Aug 13	Nancy Hasley Director	Sold10b5-1 plan	20,489	$19.56	$401k	1.1%	Form 4
Aug 10 – 11	Francis James Oneill Co-Founder, Chief U/W Officer	Sold10b5-1 plan 2 parts	152,835	$12.27 average	$1.88M	2.3%	Form 4
Aug 10	Jeffrey L Radke Co-Founder, CEO	Sold10b5-1 plan	80,000	$12.09	$967k	0.3%	Form 4
Aug 3	Jeffrey L Radke Co-Founder, CEO	Sold10b5-1 plan	80,000	$12.06	$965k	0.3%	Form 4
Jul 27 – 28	Francis James Oneill Co-Founder, Chief U/W Officer	Sold10b5-1 plan 2 parts	215,114	$14.60 average	$3.14M	3.1%	Form 4
Jul 27	Jeffrey L Radke Co-Founder, CEO	Sold10b5-1 plan 2 parts	95,223	$14.60 average	$1.39M	0.3%	Form 4
Jul 27	Matthew David Sternberg COO, Risk Exchange	Sold10b5-1 plan	17,568	$14.64	$257k	2.9%	Form 4
Jul 17 – 20	Jeffrey L Radke Co-Founder, CEO	Sold10b5-1 plan 2 parts	94,777	$13.63 average	$1.29M	0.3%	Form 4
Jul 14 – 15	Francis James Oneill Co-Founder, Chief U/W Officer	Sold10b5-1 plan 2 parts	165,886	$12.78 average	$2.12M	2.3%	Form 4
Jul 13	Jeffrey L Radke Co-Founder, CEO	Sold10b5-1 plan	80,000	$13.18	$1.05M	0.3%	Form 4
Jul 6	Jeffrey L Radke Co-Founder, CEO	Sold10b5-1 plan	80,000	$13.33	$1.07M	0.3%	Form 4
Jun 29	Jeffrey L Radke Co-Founder, CEO	Sold10b5-1 plan	80,000	$12.87	$1.03M	0.3%	Form 4
Jun 25 – 26	Francis James Oneill Co-Founder, Chief U/W Officer	Sold10b5-1 plan 2 parts	147,000	$13.12 average	$1.93M	2.0%	Form 4
Jun 23	Nancy Hasley Director	Sold10b5-1 plan	35,000	$13.11	$459k	1.8%	Form 4
Jun 23	Jeffrey L Radke Co-Founder, CEO	Sold10b5-1 plan	80,000	$13.11	$1.05M	0.3%	Form 4
Jun 22 – 23	Francis James Oneill Co-Founder, Chief U/W Officer	Sold10b5-1 plan 2 parts	147,000	$13.16 average	$1.93M	2.0%	Form 4
Mar 23	Jay Michael Green Chief Financial Officer	Sold10b5-1 plan	50,000	$12.77	$639k	4.1%	Form 4
Dec 8, 2025	Karen Sue Meriwether Director	Bought	542	$14.67	$8k	5.9%	Form 4
Nov 19, 2025	Christopher Lee-Smith Co-Founder, Head of Distrib.	Bought	14,700	$13.42	$197k	<0.1%	Form 4
Nov 19, 2025	Samuel Gaynor Director	Bought	7,500	$13.44	$101k	New	Form 4
Nov 18, 2025	Francis James Oneill Co-Founder, Chief U/W Officer	Bought	38,000	$13.34	$507k	0.5%	Form 4
Nov 17, 2025	Matthew David Sternberg COO, Risk Exchange	Bought	5,700	$13.10	$75k	3.7%	Form 4
Nov 14, 2025	Jeffrey L Radke Co-Founder, CEO	Bought	74,110	$13.48	$999k	0.3%	Form 4
Jul 25, 2025	ACP Accelerant Holdings, L.p. Large holder	SoldNo plan 4 parts	11,596,152	$21.00 average	$244M	100%	Form 4
Jul 25, 2025	Nancy Hasley General Counsel	Bought	500	$21.00	$11k	<0.1%	Form 4

Aug 21No plan
Karen Sue Meriwether
Director · sold 542 at $19.62
$11k
2.5% of stake
Aug 1310b5-1 plan
Nancy Hasley
Director · sold 20,489 at $19.56
$401k
1.1% of stake
Aug 10 – 1110b5-1 plan
Francis James Oneill
Co-Founder, Chief U/W Officer · sold 152,835 at avg $12.27
$1.88M
2.3% of stake
Aug 1010b5-1 plan
Jeffrey L Radke
Co-Founder, CEO · sold 80,000 at $12.09
$967k
0.3% of stake
Aug 310b5-1 plan
Jeffrey L Radke
Co-Founder, CEO · sold 80,000 at $12.06
$965k
0.3% of stake
Jul 27 – 2810b5-1 plan
Francis James Oneill
Co-Founder, Chief U/W Officer · sold 215,114 at avg $14.60
$3.14M
3.1% of stake
Jul 2710b5-1 plan
Jeffrey L Radke
Co-Founder, CEO · sold 95,223 at avg $14.60
$1.39M
0.3% of stake
Jul 2710b5-1 plan
Matthew David Sternberg
COO, Risk Exchange · sold 17,568 at $14.64
$257k
2.9% of stake
Jul 17 – 2010b5-1 plan
Jeffrey L Radke
Co-Founder, CEO · sold 94,777 at avg $13.63
$1.29M
0.3% of stake
Jul 14 – 1510b5-1 plan
Francis James Oneill
Co-Founder, Chief U/W Officer · sold 165,886 at avg $12.78
$2.12M
2.3% of stake
Jul 1310b5-1 plan
Jeffrey L Radke
Co-Founder, CEO · sold 80,000 at $13.18
$1.05M
0.3% of stake
Jul 610b5-1 plan
Jeffrey L Radke
Co-Founder, CEO · sold 80,000 at $13.33
$1.07M
0.3% of stake
Jun 2910b5-1 plan
Jeffrey L Radke
Co-Founder, CEO · sold 80,000 at $12.87
$1.03M
0.3% of stake
Jun 25 – 2610b5-1 plan
Francis James Oneill
Co-Founder, Chief U/W Officer · sold 147,000 at avg $13.12
$1.93M
2.0% of stake
Jun 2310b5-1 plan
Nancy Hasley
Director · sold 35,000 at $13.11
$459k
1.8% of stake
Jun 2310b5-1 plan
Jeffrey L Radke
Co-Founder, CEO · sold 80,000 at $13.11
$1.05M
0.3% of stake
Jun 22 – 2310b5-1 plan
Francis James Oneill
Co-Founder, Chief U/W Officer · sold 147,000 at avg $13.16
$1.93M
2.0% of stake
Mar 2310b5-1 plan
Jay Michael Green
Chief Financial Officer · sold 50,000 at $12.77
$639k
4.1% of stake
Dec 8, 2025
Karen Sue Meriwether
Director · bought 542 at $14.67
$8k
5.9% of stake
Nov 19, 2025
Christopher Lee-Smith
Co-Founder, Head of Distrib. · bought 14,700 at $13.42
$197k
<0.1% of stake
Nov 19, 2025
Samuel Gaynor
Director · bought 7,500 at $13.44
$101k
New position
Nov 18, 2025
Francis James Oneill
Co-Founder, Chief U/W Officer · bought 38,000 at $13.34
$507k
0.5% of stake
Nov 17, 2025
Matthew David Sternberg
COO, Risk Exchange · bought 5,700 at $13.10
$75k
3.7% of stake
Nov 14, 2025
Jeffrey L Radke
Co-Founder, CEO · bought 74,110 at $13.48
$999k
0.3% of stake
Jul 25, 2025No plan
ACP Accelerant Holdings, L.p.
Large holder · sold 11,596,152 at avg $21.00
$244M
100% of stake
Jul 25, 2025
Nancy Hasley
General Counsel · bought 500 at $21.00
$11k
<0.1% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch ARX, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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