ARX Accelerant Holdings

TSX
$19.84

Accelerant Holdings (ARX) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with ARX's own trailing one-year pace, with 100% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 5 sellers in the last 90 days
Insiders buying
6
6 transactions
Insiders selling
6
25 transactions
Purchases
$1.9M
140,552 shares
Sales
$21.6M
1,621,434 shares
Net activity
-$19.7M
purchases less sales

How much of that selling was preplanned? 100% planned / 0% discretionary

10b5-1 plan sales $21.6M 24 transactions · 1,620,892 shares
Discretionary sales $10.6K 1 transaction · 542 shares

Largest single sale: $1.6M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: December 8, 2025 , by Meriwether Karen Sue .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Meriwether Karen Sue Director Sell 542 $19.62 $10.6K 20,868 −2.5% of holding
Hasley Nancy Director Sell 10b5-1 20,489 $19.56 $400.8K 1,341,834 −1.5% of holding
ONeill Francis James Co-Founder, Chief U/W Officer Sell 10b5-1 89,219 $12.41 $1.1M 6,369,290 −1.4% of holding
RADKE JEFFREY L Co-Founder, CEO Sell 10b5-1 80,000 $12.09 $967.1K 27,591,939 −0.3% of holding
ONeill Francis James Co-Founder, Chief U/W Officer Sell 10b5-1 63,616 $12.07 $767.7K 6,458,509 −1% of holding
RADKE JEFFREY L Co-Founder, CEO Sell 10b5-1 80,000 $12.06 $964.5K 27,671,939 −0.3% of holding
ONeill Francis James Co-Founder, Chief U/W Officer Sell 10b5-1 104,647 $14.56 $1.5M 6,522,125 −1.6% of holding
ONeill Francis James Co-Founder, Chief U/W Officer Sell 10b5-1 110,467 $14.63 $1.6M 6,626,772 −1.6% of holding
RADKE JEFFREY L 2 fills Co-Founder, CEO Sell 10b5-1 95,223 $14.60 $1.4M 27,767,162 −0.3% of holding
Sternberg Matthew David COO, Risk Exchange Sell 10b5-1 17,568 $14.64 $257.2K 596,482 −2.9% of holding
RADKE JEFFREY L Co-Founder, CEO Sell 10b5-1 80,000 $13.51 $1.1M 27,847,162 −0.3% of holding
RADKE JEFFREY L Co-Founder, CEO Sell 10b5-1 14,777 $14.30 $211.3K 27,927,162 −0.1% of holding
ONeill Francis James Co-Founder, Chief U/W Officer Sell 10b5-1 82,767 $12.71 $1.1M 6,737,239 −1.2% of holding
ONeill Francis James Co-Founder, Chief U/W Officer Sell 10b5-1 83,119 $12.84 $1.1M 6,820,006 −1.2% of holding
RADKE JEFFREY L Co-Founder, CEO Sell 10b5-1 80,000 $13.18 $1.1M 27,941,939 −0.3% of holding
RADKE JEFFREY L Co-Founder, CEO Sell 10b5-1 80,000 $13.33 $1.1M 28,021,939 −0.3% of holding
RADKE JEFFREY L Co-Founder, CEO Sell 10b5-1 80,000 $12.87 $1.0M 28,101,939 −0.3% of holding
ONeill Francis James Co-Founder, Chief U/W Officer Sell 10b5-1 73,500 $13.18 $968.9K 6,903,125 −1.1% of holding
ONeill Francis James Co-Founder, Chief U/W Officer Sell 10b5-1 73,500 $13.06 $959.8K 6,976,625 −1% of holding
RADKE JEFFREY L Co-Founder, CEO Sell 10b5-1 80,000 $13.11 $1.0M 28,181,939 −0.3% of holding
ONeill Francis James Co-Founder, Chief U/W Officer Sell 10b5-1 76,464 $13.11 $1.0M 7,050,125 −1.1% of holding
Hasley Nancy Director Sell 10b5-1 35,000 $13.11 $458.9K 1,362,323 −2.5% of holding
ONeill Francis James Co-Founder, Chief U/W Officer Sell 10b5-1 70,536 $13.21 $931.6K 7,126,589 −1% of holding
Green Jay Michael Chief Financial Officer Sell 10b5-1 50,000 $12.77 $638.3K 1,175,589 −4.1% of holding
Meriwether Karen Sue Director Buy 542 $14.67 $8.0K 9,752
Lee-Smith Christopher Co-Founder, Head of Distrib. Buy 14,700 $13.42 $197.2K 17,655,379
Gaynor Samuel Director Buy 7,500 $13.44 $100.8K 7,500
ONeill Francis James Co-Founder, Chief U/W Officer Buy 38,000 $13.34 $506.8K 7,235,125
Sternberg Matthew David COO, Risk Exchange Buy 5,700 $13.10 $74.7K 157,964
RADKE JEFFREY L Co-Founder, CEO Buy 74,110 $13.48 $999.4K 28,261,939

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.