Dolby Laboratories, Inc.
US ˙ NYSE ˙ US25659T1079

SecurityDLB / Dolby Laboratories, Inc.
InstitutionBoston Trust Walden Corp
Latest Disclosed Ownership449,530 shares
Latest Disclosed Value $ 26,998,771
Boston Trust Walden Corp reports 49.22% decrease in ownership of DLB / Dolby Laboratories, Inc.

On April 24, 2026 - Boston Trust Walden Corp filed a 13F-HR form disclosing ownership of 449,530 shares of Dolby Laboratories, Inc. (US:DLB) valued at $26,998,772 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 885,234 shares of Dolby Laboratories, Inc.. This represents a change in shares of -49.22% during the quarter. The current value of the position is $24,292,601 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)
2026-04-24 2026-03-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 449,530 -435,704 -49.22 26,999 -52.51 0.1327
2026-01-28 2025-12-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 885,234 -202,951 -18.65 56,850 -27.81 0.4291
2025-10-17 2025-09-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 1,088,185 -10,033 -0.91 78,752 -3.44 0.5778
2025-07-28 2025-06-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 1,098,218 22,404 2.08 81,554 -5.61 0.5817
2025-04-21 2025-03-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 1,075,814 -8,886 -0.82 86,399 1.99 0.6312
2025-01-24 2024-12-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 1,084,700 9,624 0.90 84,715 2.97 0.5944
2024-10-24 2024-09-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 1,075,076 698,283 185.32 82,276 175.60 0.5724
2024-07-19 2024-06-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 376,793 11,177 3.06 29,853 -2.53 0.2214
2024-04-22 2024-03-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 365,616 -1,180 -0.32 30,628 -3.11 0.2185
2024-01-24 2023-12-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 366,796 3,549 0.98 31,610 9.80 0.2385
2023-10-18 2023-09-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 363,247 1,959 0.54 28,791 -4.77 0.2413
2023-07-24 2023-06-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 361,288 23,342 6.91 30,233 4.73 0.2480
2023-04-19 2023-03-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 337,946 8,234 2.50 28,867 24.12 0.2492
2023-01-20 2022-12-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 329,712 30,625 10.24 23,258 19.36 0.2045
2022-10-19 2022-09-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 299,087 -2,076 -0.69 19,485 -9.59 0.1930
2022-07-22 2022-06-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 301,163 143,229 90.69 21,551 74.46 0.2036
2022-04-20 2022-03-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 157,934 20,071 14.56 12,353 -5.90 0.1020
2022-01-21 2021-12-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 137,863 -1,918 -1.37 13,127 6.72 0.1054
2021-10-25 2021-09-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 139,781 -58,618 -29.55 12,300 -36.92 0.1089
2021-07-22 2021-06-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 198,399 10,973 5.85 19,500 5.39 0.1734
2021-04-21 2021-03-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 187,426 -54,366 -22.48 18,502 -21.22 0.1792
2021-01-15 2020-12-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 241,792 490 0.20 23,485 46.85 0.2505
2020-10-14 2020-09-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 241,302 2,570 1.08 15,993 1.70 0.1992
2020-07-23 2020-06-30 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 238,732 7,784 3.37 15,725 25.60 0.2123
2020-04-24 2020-03-31 13F/A-1 DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 230,948 230,948 12,520 0.1995
2020-04-21 2020-03-31 13F DOLBY LABORATORIES INC-CL A COMMON STOCK 25659T107 247,665 13,426
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.