Blackstone Mortgage Trust Inc
Ownership
Ownership Structure
Who owns Blackstone Mortgage Trust Inc (BXMT)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 94.3% of the shares are freely tradable; institutional investors hold 67.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 14.51 | 24,448,814 | +0.6 | 03/31/2026 |
| Blackstone Inc | 5.51 | 9,283,323 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.21 | 8,789,050 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.28 | 7,212,678 | +0.0 | 03/31/2026 |
| State Street Corp | 3.65 | 6,146,611 | +1.6 | 03/31/2026 |
| Geode Capital Management, LLC | 2.30 | 3,883,692 | -1.1 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.65 | 9,520,228 | +0.0 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.04 | 5,119,362 | +0.7 | 07/31/2026 |
| iShares Russell 2000 ETF | 2.44 | 4,112,087 | -0.6 | 08/31/2026 |
| Vanguard Small Cap Index | 2.19 | 3,684,007 | +0.3 | 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 |
|---|---|---|---|---|---|
| Nassau Henry N | Director | 218,523 | 2,906,356 $ | Aug 4, 2026 | direct |
| Sagalyn Lynne B | Director | 166,639 | 2,216,299 $ | Jul 15, 2026 | direct |
| Cotton Leonard W | Director | 98,827 | 1,314,399 $ | Jul 15, 2026 | direct |
| Lynch Nnenna | Director | 42,952 | 571,262 $ | Jul 15, 2026 | direct |
| Hsu Chen Yi | Director | 11,031 | 146,712 $ | Jul 15, 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 |
|---|---|---|---|---|---|---|
| Aug 4, 2026 | Nassau Henry N | Director | Buy | 10,000 | 14.34 | 143,357 |
| Jul 15, 2026 | Lynch Nnenna | Director | Other | 1,147 | 17.12 | 19,637 |
| Jul 15, 2026 | Sagalyn Lynne B | Director | Other | 3,939 | 17.12 | 67,436 |
| Jul 15, 2026 | Nassau Henry N | Director | Other | 3,044 | 17.12 | 52,113 |
| Jul 15, 2026 | Hsu Chen Yi | Director | Other | 181 | 17.12 | 3,099 |
| Jul 15, 2026 | Cotton Leonard W | Director | Other | 1,831 | 17.12 | 31,347 |
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 18, 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.