Sonos, Inc.
US ˙ NasdaqGS ˙ US83570H1086

SecuritySONO / Sonos, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership371,920 shares
Latest Disclosed Value $ 6,530,927
Sei Investments Co reports 37.73% increase in ownership of SONO / Sonos, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 371,920 shares of Sonos, Inc. (US:SONO) valued at $6,530,915 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 270,029 shares of Sonos, Inc.. This represents a change in shares of 37.73% during the quarter. The current value of the position is $5,846,582 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-02-13 2025-12-31 13F SONOS COM 83570H108 371,920 101,891 37.73 6,531 53.07 0.0064
2025-11-13 2025-09-30 13F SONOS COM 83570H108 270,029 -61,384 -18.52 4,266 19.10 0.0046
2025-08-14 2025-06-30 13F SONOS COM 83570H108 331,413 20,473 6.58 3,583 7.99 0.0042
2025-05-14 2025-03-31 13F/A-1 SONOS COM 83570H108 310,940 8,957 2.97 3,318 -26.95 0.0043
2025-05-13 2025-03-31 13F SONOS COM 83570H108 301,983 0 4,542 0.0049
2025-02-11 2024-12-31 13F SONOS COM 83570H108 301,983 -7,782 -2.51 4,542 19.28 0.0058
2024-11-12 2024-09-30 13F SONOS COM 83570H108 309,765 11,812 3.96 3,807 -13.42 0.0049
2024-08-13 2024-06-30 13F SONOS COM 83570H108 297,953 -17,960 -5.69 4,398 -26.97 0.0062
2024-05-07 2024-03-31 13F SONOS COM 83570H108 315,913 1,354 0.43 6,021 11.69 0.0088
2024-02-14 2023-12-31 13F SONOS COM 83570H108 314,559 224 0.07 5,392 32.85 0.0087
2023-11-14 2023-09-30 13F SONOS COM 83570H108 314,335 -8,272 -2.56 4,058 -22.97 0.0073
2023-08-11 2023-06-30 13F SONOS COM 83570H108 322,607 -12,491 -3.73 5,268 -19.87 0.0092
2023-05-12 2023-03-31 13F SONOS COM 83570H108 335,098 52,325 18.50 6,575 37.59 0.0122
2023-02-10 2022-12-31 13F SONOS COM 83570H108 282,773 28,569 11.24 4,779 35.24 0.0106
2022-11-14 2022-09-30 13F SONOS COM 83570H108 254,204 -80,931 -24.15 3,533 -41.56 0.0079
2022-08-15 2022-06-30 13F SONOS COM 83570H108 335,135 106,936 46.86 6,046 -5.97 0.0131
2022-05-13 2022-03-31 13F SONOS COM 83570H108 228,199 69,897 44.15 6,430 36.58 0.0129
2022-02-14 2021-12-31 13F SONOS COM 83570H108 158,302 -2,272 -1.41 4,708 -9.23 0.0088
2021-11-12 2021-09-30 13F SONOS COM 83570H108 160,574 -45,489 -22.08 5,187 -28.50 0.0109
2021-08-06 2021-06-30 13F SONOS COM 83570H108 206,063 -69,962 -25.35 7,255 -26.01 0.0161
2021-05-12 2021-03-31 13F SONOS COM 83570H108 276,025 -68,148 -19.80 9,806 21.77 0.0247
2021-02-08 2020-12-31 13F SONOS COM 83570H108 344,173 8,574 2.55 8,053 58.09 0.0208
2020-12-04 2020-09-30 13F/A-1 SONOS COM 83570H108 335,599 47,538 16.50 5,094 20.88 0.0148
2020-11-06 2020-09-30 13F SONOS COM 83570H108 335,599 47,538 5,094 12,265.2194
2020-08-17 2020-06-30 13F/A-1 SONOS COM 83570H108 288,061 15,730 5.78 4,214 82.50 0.0131
2020-08-11 2020-06-30 13F SONOS COM 83570H108 211,493 -60,838 3,304 8,962.2759
2020-05-14 2020-03-31 13F SONOS COM 83570H108 272,331 60,838 28.77 2,309 -30.12 0.0085
2020-02-06 2019-12-31 13F SONOS COM 83570H108 211,493 -21,893 -9.38 3,304 5.56 0.0099
2019-11-12 2019-09-30 13F SONOS COM 83570H108 233,386 190,071 438.81 3,130 537.47 0.0080
2019-08-14 2019-06-30 13F SONOS COM 83570H108 43,315 43,315 491 0.0016
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.