Inspire Medical Systems Inc (INSP)
Who owns Inspire Medical Systems Inc (INSP)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 93.5% of the shares are freely tradable; institutional investors hold 122.1%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 12.32 | 3,549,554 | +0.0 | 03/31/2026 |
| Vanguard Group Inc | 10.25 | 2,953,170 | -1.6 | 12/31/2025 |
| Deerfield Management Co | 9.38 | 2,703,238 | +79.5 | 03/31/2026 |
| Wellington Management Company LLP | 8.80 | 2,535,954 | +14.7 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.68 | 1,637,173 | +0.0 | 03/31/2026 |
| Morgan Stanley - Brokerage Accounts | 5.03 | 1,450,634 | +15.2 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.40 | 1,266,738 | +0.0 | 03/31/2026 |
| D. E. Shaw & Co LP | 4.13 | 1,188,537 | -1.9 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Health Care Inv | 7.27 | 2,093,826 | +146.3 | 03/31/2026 |
| iShares Core S&P Small-Cap ETF | 5.47 | 1,576,114 | +0.0 | 05/29/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 20. Jul 2026 | Carrel Michael H | Director | Other | 5,631 | 0.00 | – |
| 15. Jul 2026 | Melenikiotou Georgia | Director | Other | 344 | 0.00 | – |
| 15. Jul 2026 | Tansey Casey M | Director | Other | 346 | 0.00 | – |
| 15. Jul 2026 | Ellis Gary Lee | Director | Other | 581 | 0.00 | – |
| 15. Jul 2026 | Broader Shelley G | Director | Other | 383 | 0.00 | – |
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: July 31, 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.