RNTXNasdaqPharmaceutical PreparationsFiscal year ends December 31
Rein Therapeutics, Inc.
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 14, 2026
$0.55−0.04 (-6.49%)
Close on Oct 19, 2026
- Market cap
- $37.03M
- P/E (TTM)
- –
- Dividend yield
- 0.00%
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
47.3%
41M of 86M shares
Institutional holders
60
21 new, 6 sold out
Net institutional buying
29M
In Q2 2026
Insider trades, 12 months
9 buys · 0 sales
Net bought $583.32K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Leslie W. Kreis | 7,797,502 | 9.99% | 13G (passive) amendment | May 6, 2026 |
| Voss Capital, LP | 5,656,957 | 6.60% | 13G (passive) amendment | Jun 30, 2026 |
| Ma-Weaver Jacob | 5,195,000 | 6.70% | 13G (passive) | May 1, 2026 |
| Benjamin Shapiro | 4,750,000 | 6.10% | 13G (passive) | May 4, 2026 |
| Daniel Schneeberger | 4,500,000 | 5.30% | 13G (passive) | Jun 30, 2026 |
| Cocke Travis W. | 4,468,969 | 17.00% | 13G (passive) amendment | Dec 31, 2025 |
| Lynwood Opportunities Master Fund | 4,280,500 | 5.00% | 13G (passive) amendment | Jun 30, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of RNTX | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Voss Capital, LLC | 5,261,921 | 6.10% | $5.47M | +873,559 | 0.25% |
| Cable Car Capital, LP | 5,195,000 | 6.02% | $5.40M | +4,775,000 | 0.12% |
| ADAR1 Capital Management, LLC | 4,500,000 | 5.22% | $4.68M | New | 0.21% |
| Vanguard Capital Management LLC | 3,377,910 | 3.92% | $3.51M | +2,379,389 | 0.00% |
| BIOS Capital Management, LP | 2,982,375 | 3.46% | $3.10M | +1,000,000 | 7.44% |
| Ikarian Capital, LLC | 2,950,000 | 3.42% | $3.07M | New | 0.33% |
| Great Point Partners LLC | 2,575,000 | 2.98% | $2.68M | New | 0.51% |
| Citadel Advisors LLC | 2,438,711 | 2.83% | $2.54M | New | 0.00% |
| Velan Capital Investment Management LP | 1,700,000 | 1.97% | $1.77M | New | 1.08% |
| Senvest Management, LLC | 1,230,895 | 1.43% | $1.28M | +1,000,000 | 0.04% |
| Prosight Management, LP | 1,100,000 | 1.28% | $1.14M | +688,400 | 0.20% |
| Bleichroeder LP | 1,000,000 | 1.16% | $1.04M | New | 0.19% |
| Boothbay Fund Management, LLC | 889,450 | 1.03% | $925.03K | New | 0.01% |
| Geode Capital Management, LLC | 733,139 | 0.85% | $762.54K | +388,449 | 0.00% |
| University Of Texas/Texas Am Investment Managment Co | 511,610 | 0.59% | $532.07K | – | 0.06% |
| Vanguard Fiduciary Trust Co | 382,515 | 0.44% | $397.82K | +228,003 | 0.00% |
| State Street Corp | 379,604 | 0.44% | $394.79K | +303,700 | 0.00% |
| Empery Asset Management, LP | 370,834 | 0.43% | $385.67K | New | 0.45% |
| Sigma Planning Corp | 353,677 | 0.41% | $367.82K | +5,000 | 0.01% |
| BlackRock, Inc. | 326,204 | 0.38% | $339.25K | +257,676 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 60 | 41M | 47.3% | 21 / 19 | 3 / 6 | 30M | 0M |
| Q1 2026 | 46 | 11M | 13.2% | 11 / 14 | 4 / 9 | 2M | 0M |
| Q4 2025 | 48 | 11M | 12.5% | 13 / 14 | 5 / 4 | 3M | 0M |
| Q3 2025 | 40 | 8M | 9.8% | 6 / 7 | 8 / 2 | 2M | 0M |
| Q2 2025 | 36 | 7M | 7.7% | 5 / 9 | 5 / 8 | 1M | 0M |
| Q1 2025 | 39 | 6M | 7.0% | 10 / 7 | 6 / 2 | 1M | 0M |
| Q4 2024 | 31 | 6M | 6.6% | 8 / 8 | 5 / 8 | 3M | 2M |
| Q3 2024 | 31 | 5M | 5.3% | 6 / 5 | 9 / 2 | 0M | 1M |
| Q2 2024 | 28 | 5M | 6.2% | 9 / 9 | 4 / 4 | 5M | 1M |
| Q1 2024 | 23 | 2M | 2.0% | 4 / 7 | 2 / 1 | 1M | 0M |
| Q4 2023 | 20 | 1M | 1.2% | 7 / 5 | 2 / 2 | 0M | 0M |
| Q3 2023 | 16 | 1M | 1.2% | 1 / 3 | 2 / 2 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of RNTX | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 2,522,901 | 2.92% | $2.62M | 0.00% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 785,543 | 0.91% | $816.96K | 0.00% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund | 131,552 | 0.15% | $146.02K | 0.00% | May 31, 2026 |
| iShares Micro-Cap ETF | 87,065 | 0.10% | $90.55K | 0.01% | Jun 30, 2026 |
| Fidelity Nasdaq Composite Index ETF | 75,571 | 0.09% | $83.88K | 0.00% | May 31, 2026 |
| Vanguard Balanced Index Fund | 43,368 | 0.05% | $45.10K | 0.00% | Jun 30, 2026 |
| Fidelity Total Market Index Fund | 35,242 | 0.04% | $39.12K | 0.00% | May 31, 2026 |
| Fidelity Series Total Market Index Fund | 29,985 | 0.03% | $33.28K | 0.00% | May 31, 2026 |
| Vanguard Institutional Total Stock Market Index Fund | 26,098 | 0.03% | $27.14K | 0.00% | Jun 30, 2026 |
| Fidelity Nasdaq Composite Index Fund | 8,122 | 0.01% | $9.02K | 0.00% | May 31, 2026 |
| 1290 VT Micro Cap Portfolio | 5,739 | 0.01% | $5.97K | 0.00% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| James Brian Windsor | See Remarks, Director | 27,432 | 0.03% | May 13, 2026 |
| Rickenbach Josef H. Von | Director | 62,514 | 0.07% | May 28, 2026 |
| Alan A. Musso | Director | – | – | Jul 23, 2025 |
| Manuel Aivado | Director | 1,000 | 0.00% | Jul 23, 2025 |
| Reinhard J. Ambros | Director | 2,549,982 | 2.96% | Jul 23, 2025 |
| William Fairey | Director | – | – | Jul 23, 2025 |
| Voss Advisors GP, LLC | 10% owner | – | – | Nov 18, 2025 |
| Voss Value-Oriented Special Situations Fund, LP | 10% owner | 1,322,258 | 1.53% | Nov 18, 2025 |
| Voss Value Master Fund, LP | 10% owner | 1,426,441 | 1.65% | Nov 18, 2025 |
| Travis W. Cocke | 10% owner | – | – | Nov 18, 2025 |
| Voss Capital, LP | 10% owner | – | – | Nov 18, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Rickenbach Josef H. Von Director | May 27, 2026 | Buy | +4,500 | $1.07 | $4.82K | 62,514 |
| Rickenbach Josef H. Von Director | May 26, 2026 | Buy | +23,190 | $1.06 | $24.58K | 58,014 |
| Rickenbach Josef H. Von Director | May 22, 2026 | Buy | +15,950 | $1.05 | $16.75K | 34,824 |
| Rickenbach Josef H. Von Director | May 21, 2026 | Buy | +3,420 | $1.04 | $3.56K | 18,874 |
| James Brian Windsor See Remarks, Director | Apr 30, 2026 | Buy | +25,000 | $1.00 | $25.00K | 27,046 |
| Voss Value Master Fund, LP 10% owner | Nov 14, 2025 | Buy | +104,183 | $1.22 | $127.10K | 926,441 |
| Voss Value-Oriented Special Situations Fund, LP 10% owner | Oct 28, 2025 | Buy | +178,392 | $1.39 | $247.96K | 500,000 |
| Voss Value-Oriented Special Situations Fund, LP 10% owner | Oct 27, 2025 | Buy | +4,840 | $1.37 | $6.63K | 321,608 |
| Voss Value-Oriented Special Situations Fund, LP 10% owner | Oct 27, 2025 | Buy | +92,642 | $1.37 | $126.92K | 822,258 |
| Voss Value-Oriented Special Situations Fund, LP 10% owner | Oct 24, 2025 | Buy | +30,176 | $1.39 | $41.94K | 729,616 |
| James Brian Windsor President and CEO | Dec 5, 2024 | Buy | +161 | $2.25 | $362 | 161 |
| James Brian Windsor President and CEO | Dec 5, 2024 | Buy | +239 | $2.24 | $535 | 239 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 17, 2024 | Sale | −4,707 | $3.25 | $15.30K | 1,746,549 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 14, 2024 | Sale | −1,900 | $3.30 | $6.27K | 1,751,256 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 12, 2024 | Sale | −1 | $3.28 | $3 | 1,753,156 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 12, 2024 | Sale | −9,341 | $3.25 | $30.36K | 1,753,157 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 11, 2024 | Sale | −5,250 | $3.25 | $17.06K | 1,763,000 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 11, 2024 | Sale | −502 | $3.35 | $1.68K | 1,762,498 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 10, 2024 | Sale | −9,577 | $3.30 | $31.60K | 1,768,250 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 7, 2024 | Sale | −1,564 | $3.25 | $5.08K | 1,778,003 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 7, 2024 | Sale | −176 | $3.30 | $581 | 1,777,827 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 6, 2024 | Sale | −3,184 | $3.30 | $10.51K | 1,779,567 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 6, 2024 | Sale | −1,100 | $3.27 | $3.60K | 1,782,751 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Jun 5, 2024 | Sale | −6,291 | $3.30 | $20.76K | 1,783,851 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −3,100 | $4.10 | $12.71K | 1,807,357 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −200 | $4.28 | $856 | 1,793,607 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −337 | $4.28 | $1.44K | 1,793,270 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −200 | $4.29 | $858 | 1,793,070 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −2,903 | $4.29 | $12.45K | 1,790,167 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −317 | $4.27 | $1.35K | 1,793,907 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −310 | $4.26 | $1.32K | 1,794,224 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −7,923 | $4.25 | $33.67K | 1,794,534 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −400 | $4.18 | $1.67K | 1,802,457 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −670 | $4.15 | $2.78K | 1,802,857 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −1,600 | $4.15 | $6.64K | 1,803,527 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −380 | $4.13 | $1.57K | 1,805,127 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −1,750 | $4.12 | $7.21K | 1,805,507 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −100 | $4.11 | $411 | 1,807,257 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −100 | $4.27 | $427 | 1,793,807 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −25 | $4.32 | $108 | 1,790,142 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −2,903 | $4.29 | $12.45K | 1,779,331 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −200 | $4.29 | $858 | 1,782,234 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −337 | $4.28 | $1.44K | 1,782,434 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −200 | $4.28 | $856 | 1,782,771 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −100 | $4.27 | $427 | 1,782,971 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −317 | $4.27 | $1.35K | 1,783,071 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −310 | $4.26 | $1.32K | 1,783,388 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −7,923 | $4.25 | $33.67K | 1,783,698 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −400 | $4.18 | $1.67K | 1,791,621 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −670 | $4.15 | $2.78K | 1,792,021 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −1,600 | $4.15 | $6.64K | 1,792,691 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −380 | $4.13 | $1.57K | 1,794,291 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −1,750 | $4.12 | $7.21K | 1,794,671 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −100 | $4.11 | $411 | 1,796,421 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −3,100 | $4.10 | $12.71K | 1,796,521 |
| Of Texas/Texas Am Investment Management Co University 10% owner | May 1, 2024 | Sale | −25 | $4.32 | $108 | 1,779,306 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Apr 30, 2024 | Sale | −45 | $5.00 | $225 | 1,799,621 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Apr 30, 2024 | Sale | −45 | $4.95 | $223 | 1,799,666 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Apr 29, 2024 | Sale | −274 | $4.93 | $1.35K | 1,803,503 |
| Of Texas/Texas Am Investment Management Co University 10% owner | Apr 29, 2024 | Sale | −448 | $5.03 | $2.25K | 1,799,711 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Of Texas/Texas Am Investment Managment Co University 10% Stockholder | Apr 29, 2024 | 723,984 | $3.62M | Apr 29, 2024 | Converted Preferred Stock |