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WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Position in INSP — Inspire Medical Systems, Inc.

CIK 1644956 CHICAGO, IL

Position in INSP

as of Mar 31, 2026 · filed May 8, 2026
Position Value
$58,666,266
-$48,439,049 QoQ
Shares Held
1,137,384
-2.1% QoQ
Ownership
3.93%
of shares outstanding
% of Portfolio
0.20%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2020
22 quarters on record
Voting authority Sole 92% Shared 0% None 8%

Common Shares in INSP Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Jun 30, 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $352,681,379 across 9 Medical Devices names.

# Ticker Company Shares Value (USD) Open

All Filings in INSP

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22 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $58,666,266 1,137,384
2025-12-31 $107,105,315 1,161,285
2025-09-30 $96,279,916 1,297,573
2025-06-30 $99,815,061 769,169
2025-03-31 $110,367,979 692,918
2024-12-31 $167,326,027 902,611
2024-09-30 $191,284,956 906,349
2024-06-30 $103,104,371 770,413
2024-03-31 $162,555,434 756,811
2023-12-31 $164,157,228 806,947
2023-09-30 $137,746,133 694,145
2023-06-30 $271,451,631 836,162
2023-03-31 $195,844,028 836,690
2022-12-31 $209,922,585 833,423
2022-09-30 $116,818,010 658,612
2022-06-30 $121,364,303 664,391
2022-03-31 $193,566,078 754,085
2021-12-31 $203,416,981 884,191
2021-09-30 $208,654,890 895,976
2021-06-30 $147,162,658 761,475
2021-03-31 $133,132,035 643,181
2020-12-31 $99,326,755 528,081