Inspire Medical Systems, Inc.
INSP- Exchange
- NYSE
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001609550
In the last 90 days, Inspire Medical Systems, Inc. insiders filed 0 open-market purchases and 1 sale; 275 institutions reported holding it in 13F filings for Q2 2026, worth $1.65B in total; no superinvestor holds it.
Holders of 5% or more of INSP
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Inspire Medical Systems, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 11.30%3.35M shares | −1.30 ppfrom 12.60% | Apr 30, 20252 filings | Oct 17, 2025 | SEC |
| Wellington Management Group LLP | 13G | 7.60%2.21M shares | New | Feb 10, 20261 filing | Feb 10, 2026 | SEC |
| Flynn James E | 13G | 5.08%1.48M shares | New | Nov 13, 20251 filing | Nov 13, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
13 Schedule 13D and 13G filings on Inspire Medical Systems, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 20269:53 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 17, 20264:49 PM ET | Citadel Advisors LLCand 6 others | 13G/A | 1.80%527.2K shares | −4.00 ppfrom 5.80%Below 5% | Dec 31, 2025 | SEC |
| Feb 10, 202611:17 AM ET | Wellington Management Group LLPand 3 others | 13G | 7.60%2.21M shares | New | Dec 31, 2025 | SEC |
| Nov 14, 20258:56 AM ET | Dragoneer Investment Group, LLCand 1 other | 13G/A | 0.00%0 shares | −8.00 ppfrom 8.00%Below 5% | Sep 30, 2025 | SEC |
| Nov 13, 20255:32 PM ET | Flynn James Eand 3 others | 13G | 5.08%1.48M shares | New | Nov 6, 2025 | SEC |
| Nov 12, 20251:38 PM ET | Wasatch Advisors Inc | 13G/A | 0.50%135.9K shares | −4.60 ppfrom 5.10%Below 5% | Sep 30, 2025 | SEC |
| Oct 17, 20256:41 PM ET | BlackRock, Inc. | 13G/A | 11.30%3.35M shares | −1.30 ppfrom 12.60% | Sep 30, 2025 | SEC |
| Oct 7, 20253:49 PM ET | FMR LLCand 1 other | 13G/A | 2.50%741.3K shares | −5.80 ppfrom 8.30%Below 5% | Sep 30, 2025 | SEC |
| Oct 6, 20255:43 PM ET | Citadel Advisors LLCand 6 others | 13G | 5.80%1.71M shares | New | Sep 29, 2025 | SEC |
| Aug 14, 20254:30 PM ET | Dragoneer Investment Group, LLCand 1 other | 13G | 8.00%2.35M shares | New | Jun 30, 2025 | SEC |
| May 13, 20254:35 PM ET | Wasatch Advisors Inc | 13G | 5.10%1.52M shares | New | Mar 31, 2025 | SEC |
| Apr 30, 202510:24 AM ET | BlackRock, Inc. | 13G/A | 12.60%3.75M shares | – | Mar 31, 2025 | SEC |
| Feb 12, 20259:19 AM ET | FMR LLCand 1 other | 13G/A | 8.30%2.50M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Inspire Medical Systems, Inc. shares.
No Form 144 notices for Inspire Medical Systems, Inc. are on file.