Spectral AI Inc.
Ownership
Ownership Structure
Who owns Spectral AI Inc. (MDAI)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 86.6% of the shares are freely tradable; institutional investors hold 15.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Highlander Partners, L.P. | 2.80 | 900,000 | +0.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 2.26 | 726,290 | +0.0 | 03/31/2026 |
| Geode Capital Management, LLC | 0.94 | 301,207 | +39.1 | 03/31/2026 |
| Jane Street Group LLC | 0.69 | 221,001 | +320.2 | 03/31/2026 |
| Bridgeway Capital Management, LLC | 0.62 | 199,000 | +0.0 | 03/31/2026 |
| Vanguard Fiduciary Trust Co | 0.44 | 141,796 | +0.0 | 03/31/2026 |
| BlackRock Inc | 0.38 | 122,254 | +4.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.28 | 733,170 | +0.0 | 07/31/2026 |
| Bridgeway Ultra-Small Company | 0.89 | 287,000 | +44.2 | 06/30/2026 |
| Vanguard Institutional Extnd Mkt Idx Tr | 0.77 | 247,504 | +0.0 | 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.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| DiMaio John Michael | Director | 2,798,847 | 4,478,155 $ | Sep 11, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 11, 2026 | DiMaio John Michael | Director | Other | 22,000 | 1.59 | 34,980 |
| Sep 10, 2026 | DiMaio John Michael | Director | Other | 10,000 | 1.56 | 15,600 |
| Aug 13, 2026 | DiMaio John Michael | Director | Other | 35,000 | 1.64 | 57,400 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
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.