Rockwell Medical Inc
Ownership
Ownership Structure
Who owns Rockwell Medical Inc (RMTI)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 88.9% of the shares are freely tradable; institutional investors hold 10.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Capital Management, LLC | 2.93 | 1,182,361 | +0.0 | 03/31/2026 |
| Renaissance Technologies Corp | 1.59 | 639,120 | +36.5 | 03/31/2026 |
| Geode Capital Management, LLC | 1.06 | 429,180 | +17.6 | 03/31/2026 |
| BlackRock Inc | 0.59 | 236,671 | +7.2 | 03/31/2026 |
| Vanguard Fiduciary Trust Co | 0.57 | 231,258 | +0.0 | 03/31/2026 |
| UBS Group AG | 0.44 | 178,886 | +28.0 | 03/31/2026 |
| Sontag Advisory LLC | 0.38 | 151,838 | +0.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.10 | 84,492 | +0.0 | 07/31/2026 |
| Vanguard Institutional Extnd Mkt Idx Tr | 0.89 | 35,915 | +0.0 | 07/31/2026 |
| Fidelity Extended Market Index | 0.45 | 18,303 | -0.2 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.