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 2026-08-11, as of 2026-08-05)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | SINT · NASDAQ | 6,664,534 | 968,038 | 14.5% | 20 | 829392703 |
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 (20 of 20 · 829392703)
change vs 2026-03-31| # | Filer | Shares | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | Bleichroeder LP | 523,013 | 7.85% | $978K | NEW |
| 2 | Stonepine Capital Management, LLC | 209,205 | 3.14% | $333K | NEW |
| 3 | Veracity Capital LLC | 76,674 | 1.15% | $143K | — |
| 4 | CITADEL ADVISORS LLC | 31,930 | 0.48% | $60K | NEW |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 30,101 | 0.45% | $56K | -2,043 (-6.4%) |
| 6 | VANGUARD FIDUCIARY TRUST CO | 23,531 | 0.35% | $44K | — |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 20,905 | 0.31% | $39K | — |
| 8 | STATE STREET CORP | 13,302 | 0.20% | $25K | — |
| 9 | HRT FINANCIAL LP | 12,831 | 0.19% | $23K | NEW |
| 10 | UBS Group AG | 11,921 | 0.18% | $22K | +6,968 (+140.7%) |
| 11 | Virtus Wealth Solutions LLC | 10,000 | 0.15% | $19K | — |
| 12 | Tower Research Capital LLC (TRC) | 2,850 | 0.04% | $5K | +1,683 (+144.2%) |
| 13 | SIGNATUREFD, LLC | 1,717 | 0.03% | $3K | +572 (+50.0%) |
| 14 | ROYAL BANK OF CANADA | 39 | 0.00% | $0 | — |
| 15 | SBI Securities Co., Ltd. | 14 | 0.00% | $26 | — |
| 16 | Cornerstone Planning Group LLC | 1 | 0.00% | $2 | — |
| 17 | OSAIC HOLDINGS, INC. | 1 | 0.00% | $2 | -1 (-50.0%) |
| 18 | Allworth Financial LP | 1 | 0.00% | $2 | — |
| 19 | NATIONAL BANK OF CANADA /FI/ | 1 | 0.00% | $2 | — |
| 20 | MORGAN STANLEY | 1 | 0.00% | $2 | -17 (-94.4%) |
Exited since 2026-03-31 (5 filers; largest 5 shown)
| XTX Topco Ltd | −17,048 |
| DRW Securities, LLC | −12,060 |
| Broadway Wealth Solutions, Inc. | −10,000 |
| Farther Finance Advisors, LLC | −17 |
| 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 |
|---|---|---|---|---|---|
| Bleichroeder Holdings LLC | SCHEDULE 13G | 2026-08-13 | 2026-06-30 | 647,513 | 9.99% |
| Bleichroeder LP | SCHEDULE 13G | 2026-08-13 | 2026-06-30 | 647,513 | 9.99% |
| Andrew Gundlach | SCHEDULE 13G | 2026-08-13 | 2026-06-30 | 647,513 | 9.99% |
| Lytton-Kambara Foundation | SCHEDULE 13G | 2026-06-09 | 2026-06-03 | 632,633 | 9.99% |
| Stonepine Capital, L.P. | SCHEDULE 13G | 2026-06-09 | 2026-06-02 | 619,592 | 9.9% |
| Jon M. Plexico | SCHEDULE 13G | 2026-06-09 | 2026-06-02 | 619,592 | 9.9% |
| LYTTON LAURENCE W | SCHEDULE 13G | 2026-06-09 | 2026-06-03 | 632,633 | 9.99% |
| Stonepine GP, LLC | SCHEDULE 13G | 2026-06-09 | 2026-06-02 | 619,592 | 9.9% |
| Stonepine Capital Management, LLC | SCHEDULE 13G | 2026-06-09 | 2026-06-02 | 619,592 | 9.9% |
| Gregg Richard Honigblum | SCHEDULE 13G | 2025-12-09 | 2025-12-08 | 201,067 | 5% |
| Virtus Wealth Solutions LLC | SCHEDULE 13G | 2025-11-14 | 2025-09-25 | 144,928 | 5.3% |
| Sinaptic Holdings, LLC | SCHEDULE 13G/A | 2025-11-14 | 2025-07-10 | 281,450 | 7.2% |
| Kevin Patrick Murphy | SCHEDULE 13G | 2025-09-03 | 2025-08-29 | 225,914 | 8.2% |
| Sinaptic Surgical, LLC | SCHEDULE 13G | 2025-07-03 | 2025-07-01 | 216,450 | 7.9% |
| Lind Global Fund II LP | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 73,000 | 2.8% |
| Lind Global Partners II LLC | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 73,000 | 2.8% |
| EASTON JEFF | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 73,000 | 2.8% |
| MEDTECH CERAMICS, LP | SCHEDULE 13G | 2025-03-25 | 2025-02-26 | 250,084 | 9.9% |
| L1 Capital Global Opportunities Master Fund, Ltd. | SCHEDULE 13G/A | 2025-02-14 | 2024-12-31 | 0 | 0% |
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.