Inspire Medical Systems, Inc. - Common Stock, par value $0.001 per share (the "Shares") (INSP) Institutional Ownership

13F Institutional Holders and Ownership History from Q2 2018 to Q4 2025

Type / Class
Equity / Common Stock, par value $0.001 per share (the "Shares")
Symbol
INSP on NYSE
Shares outstanding
29,289,833
Price per share
$80.81
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
33,827,294
Total reported value
$3,119,629,234
% of total 13F portfolios
0%
Share change
+2,846,233
Value change
+$309,754,816
Number of holders
338
Price from insider filings
$80.81
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Inspire Medical Systems, Inc. - Common Stock, par value $0.001 per share (the "Shares") (INSP) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 11% -10% $248,822,799 -$29,612,330 3,353,407 -11% BlackRock, Inc. 30 Sep 2025
WELLINGTON MANAGEMENT GROUP LLP 7.6% $210,053,645 2,211,091 Wellington Management Group LLP 31 Dec 2025
Flynn James E 5.1% $109,541,683 1,476,303 Deerfield Mgmt, L.P. 06 Nov 2025
FMR LLC 2.5% -72% $55,005,358 -$130,571,372 741,312 -70% FMR LLC 30 Sep 2025
CITADEL ADVISORS LLC 1.8% -67% $50,085,615 -$112,653,375 527,217 -69% Kenneth Griffin 31 Dec 2025
WASATCH ADVISORS LP 0.5% -92% $10,084,819 -$103,003,921 135,914 -91% Wasatch Advisors LP 30 Sep 2025

As of 31 Dec 2025, 338 institutional investors reported holding 33,827,294 shares of Inspire Medical Systems, Inc. - Common Stock, par value $0.001 per share (the "Shares") (INSP). This represents 115% of the company’s total 29,289,833 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Inspire Medical Systems, Inc. - Common Stock, par value $0.001 per share (the "Shares") (INSP) together control 79% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 12% 3,550,848 +0.1% 0.01% $327,494,715
VANGUARD GROUP INC 10% 2,953,170 -1.6% 0% $272,370,870
WELLINGTON MANAGEMENT GROUP LLP 7.5% 2,211,091 0.04% $203,928,923
DEERFIELD MANAGEMENT COMPANY, L.P. 5.1% 1,505,872 +44% 1.8% $138,886,575
MORGAN STANLEY 4.3% 1,259,762 +180% 0.01% $116,188,052
D. E. Shaw & Co., Inc. 4.1% 1,212,162 +238% 0.08% $111,797,701
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 4% 1,161,285 -11% 0.3% $107,105,316
STATE STREET CORP 3.1% 918,504 -6.2% 0% $84,713,624
Artisan Partners Limited Partnership 2.7% 785,742 +49% 0.11% $72,468,985
FULLER & THALER ASSET MANAGEMENT, INC. 2.3% 668,099 0.21% $61,618,806
JANUS HENDERSON GROUP PLC 1.9% 562,331 -16% 0.02% $51,861,389
BRAIDWELL LP 1.8% 540,890 -39% 1.6% $49,886,285
MARSHALL WACE, LLP 1.8% 531,079 +296% 0.05% $48,981,418
DEUTSCHE BANK AG\ 1.8% 516,816 +7090% 0.02% $47,665,939
CITADEL ADVISORS LLC 1.7% 511,318 -71% 0.03% $47,158,859
GEODE CAPITAL MANAGEMENT, LLC 1.7% 491,750 -2.6% 0% $45,363,565
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 1.6% 463,316 -44% 0.01% $42,731,635
Aberdeen Group plc 1.6% 460,901 +16% 0.07% $42,508,899
BNP PARIBAS FINANCIAL MARKETS 1.6% 454,810 0% 0.03% $41,947,126
EVENTIDE ASSET MANAGEMENT, LLC 1.5% 440,205 +72% 0.63% $40,600,643
UBS Group AG 1.4% 411,329 -12% 0.01% $37,936,873
RENAISSANCE TECHNOLOGIES LLC 1.4% 410,768 +165% 0.06% $37,885,133
Amundi 1.2% 364,622 +43% 0.01% $33,629,087
Driehaus Capital Management LLC 1.2% 348,500 0.22% $32,142,155
DIMENSIONAL FUND ADVISORS LP 1.2% 341,397 -0.68% 0.01% $31,487,633

Institutional Holders of Inspire Medical Systems, Inc. - Common Stock, par value $0.001 per share (the "Shares") (INSP) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 33,827,294 $3,119,629,234 +$309,754,816 $92.23 338
2025 Q3 31,097,933 $2,308,932,982 -$485,546,950 $74.20 323
2025 Q2 33,831,801 $4,392,084,401 -$58,153,296 $129.77 355
2025 Q1 34,119,574 $5,429,765,770 +$100,291,872 $159.28 359
2024 Q4 33,398,911 $6,198,135,879 -$10,392,454 $185.38 352
2024 Q3 33,329,348 $7,028,206,302 -$1,705,882 $211.05 343
2024 Q2 31,606,997 $4,230,734,481 -$140,076,478 $133.83 320
2024 Q1 31,802,382 $6,833,627,583 +$185,419,402 $214.79 324
2023 Q4 31,022,012 $6,309,755,960 +$504,375,008 $203.43 344
2023 Q3 28,380,805 $5,631,853,601 -$36,280,954 $198.44 356
2023 Q2 27,993,926 $9,086,637,911 -$98,840,711 $324.64 401
2023 Q1 28,513,136 $6,673,582,259 +$65,144,358 $234.07 368
2022 Q4 28,312,278 $7,130,563,019 +$41,625,853 $251.88 333
2022 Q3 28,267,105 $5,016,328,749 +$139,991,536 $177.37 292
2022 Q2 27,431,317 $5,013,352,590 +$89,018,351 $182.67 276
2022 Q1 26,955,412 $6,916,191,060 +$287,047,237 $256.69 291
2021 Q4 25,849,229 $5,947,709,044 +$76,974,096 $230.06 283
2021 Q3 25,385,159 $5,911,432,728 +$104,134,188 $232.88 247
2021 Q2 24,992,220 $4,831,725,707 -$34,514,146 $193.26 246
2021 Q1 25,166,568 $5,209,155,369 +$94,545,681 $206.99 247
2020 Q4 25,155,650 $4,731,720,287 -$140,415,322 $188.09 237
2020 Q3 26,177,389 $3,378,475,696 -$39,929,859 $129.05 201
2020 Q2 26,892,329 $2,354,092,452 +$328,506,311 $87.02 186
2020 Q1 23,290,616 $1,403,659,501 -$140,442,230 $60.28 166
2019 Q4 22,240,719 $1,650,480,334 +$34,675,200 $74.21 169
2019 Q3 21,815,581 $1,331,183,700 +$112,850,027 $61.02 153
2019 Q2 19,969,050 $1,211,118,776 +$171,165,829 $60.65 145
2019 Q1 17,810,823 $1,011,266,751 +$172,131,617 $56.78 143
2018 Q4 14,874,625 $628,449,909 +$162,990,460 $42.25 102
2018 Q3 9,259,018 $389,611,304 -$2,907,456 $42.08 85
2018 Q2 9,448,509 $336,936,129 +$336,926,999 $35.66 75