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Accelerant Holdings planned insider sales

In the last twelve months insiders at Accelerant Holdings filed 20 Form 144 notices of planned sales, 2.1 million shares worth $26.9 million at the time of filing, from 6 sellers. The latest, filed 21 August 2026: Karen Meriwether (director), 542 shares worth $10,631, planned for around 21 August 2026 through Morgan Stanley Smith Barney LLC Executive Financial Services.

FiledSellerRelationshipSharesValuePlanned saleSold, per Form 4BrokerHow acquiredFiling
21 August 2026Karen MeriwetherDirector542$10,63121 August 2026542 shares from 21 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesOpen Market PurchaseForm 144
13 August 2026Nancy HasleyDirector20,489$278,85513 August 202620,489 shares from 13 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesConversion of private company equity securities into public company stock as a result of IPOForm 144
10 August 2026Radke Jeffrey LOfficer, Director80,000$958,85010 August 202680,000 shares from 10 August 2026Wells Fargo Clearing ServicesCompensationForm 144
10 August 2026Francis James O'NeillOfficer381,000$4.6 million10 August 2026152,835 shares from 10 August 2026Goldman Sachs & Co. LLCAcquired from issuer in private transactionForm 144
3 August 2026Radke Jeffrey LOfficer, Director80,000$956,3113 August 202680,000 shares from 3 August 2026Wells Fargo Clearing ServicesCompensationForm 144
27 July 2026Matthew SternbergOfficer17,568$249,99327 July 202617,568 shares from 27 July 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
27 July 2026Radke Jeffrey LOfficer, Director95,223$1.4 million27 July 202695,223 shares from 27 July 2026Wells Fargo Clearing ServicesCompensationForm 144
24 July 2026Radke Jeffrey LOfficer, Director30,000$424,72624 July 2026No matching Form 4 saleWells Fargo Clearing ServicesCompensationForm 144
20 July 2026Radke Jeffrey LOfficer, Director80,000$1.1 million20 July 202680,000 shares from 20 July 2026Wells Fargo Clearing ServicesCompensationForm 144
17 July 2026Radke Jeffrey LOfficer, Director14,777$208,73217 July 202614,777 shares from 17 July 2026Wells Fargo Clearing ServicesCompensationForm 144
14 July 2026Francis James O'NeillOfficer381,000$4.8 million14 July 2026381,000 shares from 14 July 2026Goldman Sachs & Co. LLCAcquired from issuer in private transactionForm 144
13 July 2026Radke Jeffrey LOfficer, Director80,000$1.0 million13 July 202680,000 shares from 13 July 2026Wells Fargo Clearing ServicesCompensationForm 144
6 July 2026Radke Jeffrey LOfficer, Director80,000$1.1 million6 July 202680,000 shares from 6 July 2026Wells Fargo Clearing ServicesCompensationForm 144
29 June 2026Radke Jeffrey LOfficer, Director80,000$1.0 million29 June 202680,000 shares from 29 June 2026Wells Fargo Clearing ServicesCompensationForm 144
23 June 2026Nancy HasleyDirector, Officer35,000$451,15023 June 202635,000 shares from 23 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesConversion of private company equity securities into public company stock as a result of IPOForm 144
23 June 2026Radke Jeffrey LOfficer, Director80,000$1.0 million23 June 202680,000 shares from 23 June 2026Wells Fargo Clearing ServicesCompensationForm 144
23 June 2026Francis James O'NeillOfficer220,500$2.9 million23 June 2026294,000 shares from 22 June 2026Goldman Sachs & Co. LLCAcquired from issuer in private transactionForm 144
22 June 2026Francis James O'NeillOfficer73,500$947,41522 June 2026No matching Form 4 saleGoldman Sachs & Co. LLCAcquired from issuer in private transactionForm 144
18 May 2026Jay GreenFormer affiliate180,000$2.8 million18 May 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesRestricted stock vesting under a registered planForm 144
23 March 2026Jay GreenOfficer50,000$647,50023 March 202650,000 shares from 23 March 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesConversion of Private Co SharesForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Sold, per Form 4: the same seller's open-market sales on Form 4 from the notice's date to 90 days after, added up, as they appear on the insiders page; a holder who files no Form 4, such as some large holders, never shows one. What is a Form 144?