RNTX's three largest insider shareholders as of September 29, 2026 are Of Texas/Texas Am Investment Management Co University (TenPercentOwner, 1.75Mn shares), Capital, Lp Voss (TenPercentOwner, 1.43Mn shares), Rickenbach Josef H Von (Director, 62.51K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Of Texas/Texas Am Investment Management Co University | TenPercentOwner | 1,746,549 | 0 | 1,746,549 | 53.5% | 17 Jun, 2024 |
| 2 | Capital, Lp Voss | TenPercentOwner | 0 | 1,426,441 | 1,426,441 | 43.7% | 18 Nov, 2025 |
| 3 | Rickenbach Josef H Von | Director | 62,514 | 0 | 62,514 | 1.9% | 27 May, 2026 |
| 4 | James Brian Windsor | Director, Officer | 27,046 | 161 | 27,207 | 0.8% | 12 May, 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 |
|---|---|---|---|---|---|---|---|---|
| 21 May, 2026 | Rickenbach Josef H Von | Director | Acquired P | 3,420 | $1.04 | $3.56K | 18,874 | Direct |
| 22 May, 2026 | Rickenbach Josef H Von | Director | Acquired P | 15,950 | $1.05 | $16.71K | 34,824 | Direct |
| 26 May, 2026 | Rickenbach Josef H Von | Director | Acquired P | 23,190 | $1.06 | $24.47K | 58,014 | Direct |
| 27 May, 2026 | Rickenbach Josef H Von | Director | Acquired P | 4,500 | $1.07 | $4.82K | 62,514 | Direct |
| 30 Apr, 2026 | James Brian Windsor | Director, Officer | Acquired P | 25,000 | $1.00 | $25.00K | 27,046 | Direct |
| 08 May, 2026 | James Brian Windsor | Director, Officer | Disposed A | 150,000 | $0.00 | $0 | 150,000 | Direct |
| 14 Nov, 2025 | Capital, Lp Voss | TenPercentOwner | Acquired P | 104,183 | $1.22 | $127.59K | 926,441 | Indirect |
| 24 Oct, 2025 | Capital, Lp Voss | TenPercentOwner | Acquired P | 30,176 | $1.39 | $41.96K | 729,616 | Indirect |
| 27 Oct, 2025 | Capital, Lp Voss | TenPercentOwner | Acquired P | 92,642 | $1.37 | $126.92K | 822,258 | Indirect |
| 27 Oct, 2025 | Capital, Lp Voss | TenPercentOwner | Acquired P | 4,840 | $1.37 | $6.62K | 321,608 | Indirect |
| 28 Oct, 2025 | Capital, Lp Voss | TenPercentOwner | Acquired P | 178,392 | $1.39 | $247.96K | 500,000 | Indirect |
| 23 Jul, 2025 | Manuel Aivado | Director | Acquired A | 17,500 | $0.00 | $0 | 17,500 | Direct |
| 23 Jul, 2025 | Rickenbach Josef H Von | Director | Acquired A | 17,500 | $0.00 | $0 | 17,500 | Direct |
| 23 Jul, 2025 | Reinhard J. Ambros | Director | Acquired A | 17,500 | $0.00 | $0 | 17,500 | Direct |
| 23 Jul, 2025 | Alan A Musso | Director | Acquired A | 17,500 | $0.00 | $0 | 17,500 | Direct |
| 23 Jul, 2025 | William Fairey | Director | Acquired A | 17,500 | $0.00 | $0 | 17,500 | Direct |
| 05 Dec, 2024 | James Brian Windsor | President And Ceo | Acquired P | 239 | $2.24 | $535 | 239 | Indirect |
| 05 Dec, 2024 | James Brian Windsor | President And Ceo | Acquired P | 161 | $2.25 | $362 | 161 | Indirect |
| 02 Dec, 2024 | William Fairey | Director | Acquired A | 35,000 | $0.00 | $0 | 35,000 | Direct |
| 02 Dec, 2024 | Manuel Aivado | Director | Acquired A | 35,000 | $0.00 | $0 | 35,000 | Direct |