Rein Therapeutics's top three insider shareholders as of March 23, 2026 are Of Texas/Texas Am Investment Management Co University (TenPercentOwner, 1.75Mn shares), Capital, Lp Voss (TenPercentOwner, 926.44K shares), James Brian Windsor (President And Coo, 7.12K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Of Texas/Texas Am Investment Management Co University | 1,746,549 | 0 | 17 Jun, 2024 | |
| Capital, Lp Voss | 0 | 926,441 | 18 Nov, 2025 | |
| James Brian Windsor | President And Coo | 7,122 | 0 | 06 Mar, 2024 |
| James Brian Windsor | President And Ceo | 0 | 161 | 09 Dec, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 14 Nov, 2025 | Capital, Lp Voss | Common Stock, $0.001 par value | A | 104,183 | $1.22 | 926,441 | I | P |
| 24 Oct, 2025 | Capital, Lp Voss | Common Stock, $0.001 par value | A | 30,176 | $1.39 | 729,616 | I | P |
| 27 Oct, 2025 | Capital, Lp Voss | Common Stock, $0.001 par value | A | 92,642 | $1.37 | 822,258 | I | P |
| 27 Oct, 2025 | Capital, Lp Voss | Common Stock, $0.001 par value | A | 4,840 | $1.37 | 321,608 | I | P |
| 28 Oct, 2025 | Capital, Lp Voss | Common Stock, $0.001 par value | A | 178,392 | $1.39 | 500,000 | I | P |
| 23 Jul, 2025 | Manuel Aivado | Stock Option (right to buy) | A | 17,500 | $0.00 | 17,500 | D | A |
| 23 Jul, 2025 | Alan A Musso | Stock Option (right to buy) | A | 17,500 | $0.00 | 17,500 | D | A |
| 23 Jul, 2025 | William Fairey | Stock Option (right to buy) | A | 17,500 | $0.00 | 17,500 | D | A |
| 23 Jul, 2025 | Reinhard J. Ambros | Stock Option (right to buy) | A | 17,500 | $0.00 | 17,500 | D | A |
| 23 Jul, 2025 | Rickenbach Josef H Von | Stock Option (right to buy) | A | 17,500 | $0.00 | 17,500 | D | A |
| 05 Dec, 2024 | James Brian Windsor | Common Stock | A | 239 | $2.24 | 239 | I | P |
| 05 Dec, 2024 | James Brian Windsor | Common Stock | A | 161 | $2.25 | 161 | I | P |
| 02 Dec, 2024 | Reinhard J. Ambros | Stock Option (right to buy) | A | 35,000 | $0.00 | 35,000 | D | A |
| 02 Dec, 2024 | Rickenbach Josef H Von | Stock Option (right to buy) | A | 35,000 | $0.00 | 35,000 | D | A |
| 02 Dec, 2024 | Alan A Musso | Stock Option (right to buy) | A | 35,000 | $0.00 | 35,000 | D | A |
| 02 Dec, 2024 | Manuel Aivado | Stock Option (right to buy) | A | 35,000 | $0.00 | 35,000 | D | A |
| 02 Dec, 2024 | William Fairey | Stock Option (right to buy) | A | 35,000 | $0.00 | 35,000 | D | A |
| 02 Dec, 2024 | James Brian Windsor | Stock Option (right to buy) | A | 517,500 | $0.00 | 517,500 | D | A |
| 20 Aug, 2024 | Rickenbach Josef H Von | Stock Option (right to buy) | A | 2,725 | $0.00 | 2,725 | D | A |
| 20 Aug, 2024 | Alan A Musso | Stock Option (right to buy) | A | 2,725 | $0.00 | 2,725 | D | A |