Neptune Insurance Holdings's three largest insider shareholders as of September 29, 2026 are Vii, L.P. Ftv (TenPercentOwner, 14.44Mn shares), Hold 101, Lp Bsiv (TenPercentOwner, 12.62Mn shares), Jonathan Winant Carlon (Director, 5.11Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Vii, L.P. Ftv | TenPercentOwner | 0 | 14,442,941 | 14,442,941 | 39.3% | 30 Jul, 2026 |
| 2 | Hold 101, Lp Bsiv | TenPercentOwner | 12,620,558 | 0 | 12,620,558 | 34.4% | 30 Jul, 2026 |
| 3 | James Steiner | Chief Financial Officer | 535,665 | 3,749,050 | 4,284,715 | 11.7% | 16 Sep, 2026 |
| 4 | Trevor R Burgess | Ceo Chairman Of The Board | 2,082,964 | 0 | 2,082,964 | 5.7% | 13 Mar, 2026 |
| 5 | Matthew Paul Duffy | President Chief Risk Officer | 1,951,853 | 0 | 1,951,853 | 5.3% | 03 Oct, 2025 |
| 6 | Jonathan Winant Carlon | Director | 1,252,000 | 0 | 1,252,000 | 3.4% | 15 Sep, 2026 |
| 7 | Cristian A Melej | Director | 59,474 | 0 | 59,474 | 0.2% | 03 Oct, 2025 |
| 8 | Michael Warren Vostrizansky | Director | 23,000 | 0 | 23,000 | 0.1% | 24 Feb, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 09 Sep, 2026 | James Steiner | Chief Financial Officer | Disposed J | 400,000 | — | — | 3,349,050 | Direct |
| 09 Sep, 2026 | James Steiner | Chief Financial Officer | Acquired J | 400,000 | — | — | 400,000 | Indirect |
| 12 Aug, 2026 | James Steiner | Chief Financial Officer | Disposed S | 42,988 | $31.08 | $1.34Mn | 3,806,062 | Direct |
| 13 Aug, 2026 | James Steiner | Chief Financial Officer | Disposed S | 57,012 | $31.71 | $1.81Mn | 3,749,050 | Direct |
| 29 Jul, 2026 | Vii, L.P. Ftv | TenPercentOwner | Disposed S | 1,867,840 | $33.22 | $62.05Mn | 14,442,941 | Indirect |
| 29 Jul, 2026 | Hold 101, Lp Bsiv | TenPercentOwner | Disposed S | 1,632,160 | $33.22 | $54.22Mn | 12,620,558 | Direct |
| 15 May, 2026 | Vii, L.P. Ftv | TenPercentOwner | Disposed S | 5,252,044 | $26.40 | $138.65Mn | 17,098,587 | Indirect |
| 15 May, 2026 | Hold 101, Lp Bsiv | TenPercentOwner | Disposed S | 4,589,351 | $26.40 | $121.16Mn | 14,941,121 | Direct |
| 19 May, 2026 | Hold 101, Lp Bsiv | TenPercentOwner | Disposed S | 688,403 | $26.40 | $18.17Mn | 14,252,718 | Direct |
| 19 May, 2026 | Vii, L.P. Ftv | TenPercentOwner | Disposed S | 787,806 | $26.40 | $20.80Mn | 16,310,781 | Indirect |
| 13 Mar, 2026 | Trevor R Burgess | Ceo Chairman Of The Board | Acquired P | 50,000 | $18.71 | $935.35K | 2,082,964 | Direct |
| 20 Feb, 2026 | Michael Warren Vostrizansky | Director | Acquired P | 23,000 | $21.50 | $494.41K | 23,000 | Direct |
| 02 Oct, 2025 | James Steiner | Cfo And Secretary | Acquired P | 119,050 | $20.00 | $2.38Mn | 4,384,715 | Direct |
| 02 Oct, 2025 | Trevor R Burgess | Ceo Chairman Of The Board | Acquired P | 50,000 | $20.00 | $1.00Mn | 2,032,964 | Direct |
| 02 Oct, 2025 | Jonathan Winant Carlon | Director | Acquired P | 5,000 | $20.00 | $100.00K | 653,500 | Direct |
| 02 Oct, 2025 | Trevor R Burgess | Ceo Chairman Of The Board | Disposed J | 25,039,000 | — | — | 0 | Indirect |
| 01 Oct, 2025 | Hold 101, Lp Bsiv | TenPercentOwner | Disposed S | 820,123 | $18.75 | $15.38Mn | 19,530,472 | Direct |
| 01 Oct, 2025 | Vii, L.P. Ftv | TenPercentOwner | Disposed S | 678,019 | $18.75 | $12.71Mn | 22,350,631 | Indirect |
| 02 Oct, 2025 | Cristian A Melej | Director | Disposed J | 20,000 | — | — | 0 | Direct |
| 02 Oct, 2025 | James Steiner | Cfo And Secretary | Disposed J | 3,730,000 | — | — | 0 | Direct |