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Neptune Insurance Holdings Inc. planned insider sales

In the last twelve months insiders at Neptune Insurance Holdings Inc. filed 5 Form 144 notices of planned sales, 3.8 million shares worth $125.5 million at the time of filing, from 5 sellers. The latest, filed 2 October 2026: Matthew Duffy (officer), 165,570 shares worth $4.5 million, planned for around 2 October 2026 through Morgan Stanley Smith Barney LLC Executive Financial Services.

FiledSellerRelationshipSharesValuePlanned saleSold, per Form 4BrokerHow acquiredFiling
2 October 2026Matthew DuffyOfficer165,570$4.5 million2 October 2026165,570 shares from 2 October 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
14 September 2026Jonathan Winant CarlonDirector of Corporate Development50,000$1.6 million14 September 202650,000 shares from 14 September 2026J.P. Morgan Securities LLCStock Option ExerciseForm 144
12 August 2026James SteinerDirector and Chief Financial Officer100,000$3.2 million12 August 2026100,000 shares from 12 August 2026Merrill LynchEmployer GrantForm 144
29 July 2026Bsiv Hold 101, LP10% Stockholder1,632,160$54.2 million29 July 20261,632,160 shares from 29 July 2026Morgan Stanley & Co. LLCConverted from convertible preferred stock acquired in a private placement.Form 144
29 July 2026FTV Vii, L.P.10% Stockholder1,867,840$62.0 million29 July 20261,867,840 shares from 29 July 2026Morgan Stanley & Co. LLCConverted from convertible preferred stock acquired in a private placement.Form 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?