Notice of Proposed Sale · 144
Neptune Insurance Holdings Inc.
NPNYSEEQUITYCurrent
Notice of Proposed Sale
Structured filing — 144
primary_doc.xml
Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.
Proposed-sale notice
- Issuer
- Neptune Insurance Holdings Inc.
- Issuer CIK
- 0002067129
- SEC file number
- 001-42878
- Phone
- 7272024815
- Person for whose account securities are to be sold
- MATTHEW DUFFY
- Relationships to issuer
- Officer
- Street
- 400 6th Street S, Suite 2
- City
- St. Petersburg
- State / country code
- FL
- Postal code
- 33701
Securities proposed for sale
| Security | Proposed units | Aggregate market value | Units outstanding | Approximate sale date | Exchange | Broker / market maker |
|---|---|---|---|---|---|---|
| Common | 165,570 | 4,510,126.80 | 93,798,090 | 10/02/2026 | NYSE | Morgan Stanley Smith Barney LLC Executive Financial Services |
Broker / market maker — proposed row 1, entry 1
- Name
- Morgan Stanley Smith Barney LLC Executive Financial Services
- Street
- 1 New York Plaza
- Street (continued)
- 8th Floor
- City
- New York
- State / country code
- NY
- Postal code
- 10004
Acquisition of securities to be sold
| Security | Acquired | Nature of acquisition | Acquired from | Amount acquired | Gift transaction | Payment date | Nature of payment |
|---|---|---|---|---|---|---|---|
| Common | 09/30/2026 | Restricted Stock Units | Issuer | 165,570 | N | 09/30/2026 | N/A |
Prior-sale reporting
- Nothing to report for the preceding three months
- Y
Notice signature
- Notice date
- 10/02/2026
- Signed
- /s/ Matthew Duffy
- Plan adoption dates
- 06/12/2026
Company context
Neptune is a leading, high-growth, highly profitable, data-driven managing general agent that is revolutionizing the way homeowners and businesses protect against the growing risks of flooding. We offer a range of easy-to-purchase residential and commercial insurance products — including primary flood insurance, excess flood insurance, and parametric earthquake insurance — distributed through a nationwide network of agencies. Neptune does not take any balance sheet insurance risk or have claims handling responsibility relating to the policies we sell. We underwrite and administer the issuance of insurance policies on behalf of a diverse panel of insurance and reinsurance companies, whom we refer to as capacity providers, that manage both this risk and the associated claims handling. From day one, we have built our business on a foundation of advanced data science and AI, leveraging proprietary ML algorithms, which has led to superior underwriting results, outsized growth, recurring revenue, and robust margins, including delivering a lifetime written loss ratio of just 24.7% to our capacity providers from our inception through June 30, 2025. In addition, for the year ended December 31, 2024, we achieved 40.6% organic revenue growth, 29.0% net income margin, and 60.4% Adjusted EBITDA margin and for the six months ended June 30, 2025, we achieved 32.3% organic revenue growth, 30.2% net income margin and 59.3% Adjusted EBITDA margin.