Form4insider filings, from the source

Company · CIK 0002067129 · SIC 6411 — Insurance Agents, Brokers & Service · NYSE

Neptune Insurance Holdings Inc. · NP

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $121.0M · 4net −$121.0M
$100k$100k$10M$10M$1B$1BbuyssalesJul 28Aug 5Aug 13Aug 21Aug 29Sep 6Sep 15

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 14, 2026 JForm 4 →Sep 16, 4:22 pm EDTJames SteinerChief Financial Officer, Director6,698,100——3,749,050—
Sep 14, 2026 SForm 4 →Sep 15, 5:19 pm EDTJonathan Winant CarlonDirector50,000$31.15$1,557,595603,500−7.65%
Sep 9, 2026 JForm 4/A →Sep 16, 4:21 pm EDTJames SteinerChief Financial Officer, Director800,000——400,000—
Sep 9, 2026 JForm 4 →Sep 10, 2:12 pm EDTJames SteinerChief Financial Officer, Director800,000——400,000— amended
Aug 12, 2026 SForm 4/A →Sep 16, 4:17 pm EDTJames SteinerChief Financial Officer, Director100,000$31.44$3,143,8444,284,715−2.28%
Aug 12, 2026 SForm 4 →Aug 14, 4:23 pm EDTJames SteinerChief Financial Officer, Director100,000$31.44$3,143,8443,749,050−2.60% amended
Jul 29, 2026 SForm 4 →Jul 31, 7:00 pm EDTBSIV Hold 101, LP +410% Owner1,632,160$33.22$54,220,35512,620,558−11.5%
Jul 29, 2026 SForm 4 →Jul 31, 7:00 pm EDTFTV VII, L.P. +310% Owner1,867,840$33.22$62,049,64514,442,941−11.5%

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.