Institutional HoldersBeta
Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.
Share classes (cover page of the 10-Q filed 2026-08-13, as of 2026-08-10)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | PTHS · NYSEAMER | 3,828,469 | 1,361,286 | 35.6% | 24 | 171126204 |
Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.
Top holders (24 of 24 · 171126204)
change vs 2026-03-31| # | Filer | Shares | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | AIGH Capital Management LLC | 329,098 | 8.60% | $9.3M | NEW |
| 2 | Murchinson Ltd. | 304,302 | 7.95% | $8.6M | +7,988 (+2.7%) |
| 3 | Ikarian Capital, LLC | 256,598 | 6.70% | $7.3M | — |
| 4 | BOOTHBAY FUND MANAGEMENT, LLC | 101,976 | 2.66% | $2.9M | +20,118 (+24.6%) |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 97,134 | 2.54% | $2.7M | +4,041 (+4.3%) |
| 6 | CANTOR FITZGERALD, L. P. | 76,246 | 1.99% | $2.2M | +34,823 (+84.1%) |
| 7 | J. Goldman & Co LP | 38,075 | 0.99% | $1.1M | -12,340 (-24.5%) |
| 8 | DIADEMA PARTNERS LP | 24,773 | 0.65% | $700K | — |
| 9 | WEXFORD CAPITAL LP | 22,364 | 0.58% | $632K | NEW |
| 10 | Knott David M Jr | 22,073 | 0.58% | $624K | +1,000 (+4.7%) |
| 11 | CITADEL ADVISORS LLC | 15,046 | 0.39% | $425K | NEW |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 14,650 | 0.38% | $414K | -640 (-4.2%) |
| 13 | Pale Fire Capital SE | 12,919 | 0.34% | $365K | — |
| 14 | 1492 Capital Management LLC | 10,380 | 0.27% | $293K | NEW |
| 15 | VANGUARD FIDUCIARY TRUST CO | 9,873 | 0.26% | $279K | +56 (+0.6%) |
| 16 | STATE STREET CORP | 9,800 | 0.26% | $277K | NEW |
| 17 | Persistent Asset Partners Ltd | 6,007 | 0.16% | $170K | — |
| 18 | BlackRock, Inc. | 5,324 | 0.14% | $150K | NEW |
| 19 | UBS Group AG | 2,217 | 0.06% | $63K | +1,453 (+190.2%) |
| 20 | China Universal Asset Management Co., Ltd. | 2,160 | 0.06% | $61K | NEW |
| 21 | Tower Research Capital LLC (TRC) | 205 | 0.01% | $6K | NEW |
| 22 | Farther Finance Advisors, LLC | 40 | 0.00% | $1K | — |
| 23 | BARCLAYS PLC | 20 | 0.00% | $565 | NEW |
| 24 | ROYAL BANK OF CANADA | 6 | 0.00% | $0 | NEW |
Exited since 2026-03-31 (3 filers; largest 3 shown)
| Steward Partners Investment Advisory, LLC | −1,910 |
| Aspect Partners, LLC | −16 |
| CITIGROUP INC | −1 |
Large holders from 13D/13G (latest per reporting person, last 2 years)
Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.
| Reporting person | Form | Filed | Event | Shares | % of class |
|---|---|---|---|---|---|
| Ikarian Capital, LLC | SCHEDULE 13G/A | 2026-05-15 | 2026-03-31 | 256,598 | 7.7% |
| Neil Shahrestani | SCHEDULE 13G/A | 2026-05-15 | 2026-03-31 | 256,598 | 7.7% |
| Maier Joshua Tarlow | SCHEDULE 13G/A | 2026-05-07 | 2026-03-31 | 337,026 | 9.9% |
| 3i, LP | SCHEDULE 13G/A | 2026-05-07 | 2026-03-31 | 337,026 | 9.9% |
| 3i Management LLC | SCHEDULE 13G/A | 2026-05-07 | 2026-03-31 | 337,026 | 9.9% |
| Marc Bistricer | SCHEDULE 13G | 2025-11-14 | 2025-09-30 | 280,000 | 9.1% |
| Murchinson Ltd. | SCHEDULE 13G | 2025-11-14 | 2025-09-30 | 280,000 | 9.1% |
| Ligand Pharmaceuticals Incorporated | SCHEDULE 13D/A | 2025-11-10 | 2025-11-06 | 5,189,177.1 | 49.9% |
| AME Equities LLC | SCHEDULE 13G/A | 2025-08-13 | 2025-06-30 | 0 | 0% |
| Ruth Friedman | SCHEDULE 13G/A | 2025-08-13 | 2025-06-30 | 0 | 0% |
| Balmoral Financial Group LLC | SCHEDULE 13D/A | 2025-07-03 | 2025-07-01 | 92,072 | 3.1% |
| Ezra Friedberg | SCHEDULE 13D/A | 2025-07-03 | 2025-07-01 | 250,121 | 8.3% |
| Key Recovery Group LLC | SCHEDULE 13D/A | 2025-07-03 | 2025-07-01 | 40,000 | 1.3% |
| Alexandra Wood (Canada) Inc. | SCHEDULE 13G | 2025-01-15 | 2024-12-13 | 574,187 | 9.53% |
Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.