Inspire Medical Systems
Uses hypoglossal-nerve stimulation to treat obstructive sleep apnea.
$61.44
After-hours close−0.07 (−0.11%)
At close$61.51(+1.13%)
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Breakdown13F · Form 4
Institutions 133.41%Insiders 1.55%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 28.91M · Float 27.25M · 94.3% free float
Institutions13F, as of Jun 30, 2026
284 holders · 38.57M shares · 72 new positions · 169 increased · 77 reduced · 95 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 4.74M | 16.39% | +1.19M | Aug 7, 2026 |
| Wellington Management Group LLP | 2.38M | 8.24% | −153.3K | Aug 14, 2026 |
| Vanguard Portfolio Management LLC | 2.09M | 7.23% | +451.8K | Aug 13, 2026 |
| Soleus Capital Management, L.P. | 1.93M | 6.68% | +1.36M | Aug 11, 2026 |
| AQR Capital Management LLC | 1.86M | 6.42% | +1.55M | Aug 14, 2026 |
| UBS Group AG | 1.65M | 5.69% | +1.01M | Aug 13, 2026 |
| D. E. Shaw & Co., Inc. | 1.47M | 5.09% | +281.9K | Aug 14, 2026 |
| Nomura Holdings Inc | 1.37M | 4.74% | +1.37M | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 11.30% | 3.35M | 13G | Oct 17, 2025 ↗ |
| Wellington Management Group LLP | 8.80% | 2.54M | 13G | May 15, 2026 ↗ |
| Vanguard Portfolio Management | 5.71% | 1.64M | 13G | Apr 29, 2026 ↗ |
| D. E. Shaw & Co., L.P. | 5.10% | 1.48M | 13G | Jul 2, 2026 ↗ |
| Soleus Capital Master Fund, L.P. | 5.10% | 1.47M | 13G | May 27, 2026 ↗ |
| Vanguard Capital Management | 5.10% | 1.47M | 13G | Apr 30, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Timothy P. Herbert | director, officer: CEO and President | 155.3K | 0.54% | Feb 24, 2026 |
| Richard Buchholz | officer: Interim CFO | 45.5K | 0.16% | Feb 18, 2026 |
| Shawn mcCormick | director | 27.7K | 0.10% | May 11, 2026 |
| John Rondoni | officer: See Remarks | 27.2K | 0.09% | May 19, 2026 |
| Casey M. Tansey | director | 26.6K | 0.09% | Jul 17, 2026 |
| Dana G. Jr. Mead | director | 26.2K | 0.09% | May 4, 2026 |
| Melissa Mann | officer: Chief People Officer | 23.0K | 0.08% | Aug 4, 2026 |
| Matthew J. Osberg | officer: Chief Financial Officer | 19.8K | 0.07% | Feb 24, 2026 |
| Jason P. Kelly | officer: See Remarks | 19.0K | 0.07% | Aug 11, 2026 |
| Bryan K. Phillips | officer: See Remarks | 14.2K | 0.05% | Feb 24, 2026 |
6 ten-percent owners hold 5.81M shares by Form 4, outside the officers-and-directors figure above · 28 people have not refiled in the last 18 months (1.41M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 7, 2026 | Jason P. Kellyofficer: See Remarks | Sale | 963 | $59.55 | 18,985 |
| May 15, 2026 | John Rondoniofficer: See Remarks | Sale | 2,641 | $43.28 | 27,165 |
| May 14, 2026 | John Rondoniofficer: See Remarks | Sale | 700 | $43.01 | 29,806 |
| May 8, 2026 | Shawn mcCormickdirector | Sale | 696 | $45.31 | 27,712 |
| Jan 9, 2026 | John Rondoniofficer: See Remarks | Sale | 109 | $100.00 | 13,797 |
| Dec 2, 2025 | Shawn mcCormickdirector | Sale | 1,200 | $139.00 | 24,846 |
| Nov 28, 2025 | Shawn mcCormickdirector | Sale | 2,000 | $127.48 | 26,046 |
| Aug 8, 2025 | Myriam Curetdirector | Sale | 4 | $77.28 | 3,365 |
| May 8, 2025 | Myriam Curetdirector | Sale | 2 | $153.22 | 3,369 |
| Mar 20, 2025 | Myriam Curetdirector | Purchase | 4 | $163.84 | 3,370 |
CongressHouse and Senate disclosures
Not reported.