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Public ownership evidence

Dolby Laboratories, Inc.Class A (DLB) Ownership Disclosures

Read DLB insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-10-062026-10-01Couling John DS836Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-01 and its public availability date is 2026-10-06. Subtracting those calendar dates gives 5 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001193125-26-414725 ↗SEC 0001193125-26-414725 ↗SEC 0001193125-26-394499 ↗

Recent Form 4 activity

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2026-10-062026-10-01Couling John DS836Not reported
2026-10-062026-10-01Couling John DS6,831Not reported
2026-09-172026-09-15Whitten MarcA160,256Not reported
2026-09-172026-09-15Whitten MarcA600,000Not reported
2026-09-172026-09-15Couling John DA48,076Not reported
2026-09-172026-09-15SHERMAN MARK ANDREWA48,076Not reported
2026-09-042026-09-01Couling John DS7,667Not reported
2026-08-282026-08-25Nicholson RyanS1,183Not reported
2026-08-192026-08-14Revankar ShriramS3,000Not reported
2026-08-132026-08-10Nicholson RyanS1,348Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2026-03-312026-08-298$480None
B. Riley Wealth Advisors, Inc.2025-03-312026-08-292,804$225,178None
Advisors Asset Management, Inc.2022-12-312026-08-282,740$193,280None
Corient Private Wealth LP2026-06-302026-08-284,449$233,930None
Advisors Asset Management, Inc.2024-03-312026-08-272,778$232,713None
Advisors Asset Management, Inc.2025-03-312026-08-274,830$387,897None
Advisors Asset Management, Inc.2022-09-302026-08-271,559$102,000None
Advisors Asset Management, Inc.2023-06-302026-08-273,773$315,725None
Advisors Asset Management, Inc.2023-09-302026-08-274,300$340,818None
Advisors Asset Management, Inc.2023-03-312026-08-273,286$280,690None
Advisors Asset Management, Inc.2025-09-302026-08-273,931$284,486None
Advisors Asset Management, Inc.2023-12-312026-08-273,167$272,932None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-264,100$215,578None
Advisors Asset Management, Inc.2025-06-302026-08-254,564$338,923None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2570,467$3,705,155None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-253,705,155$70,467,000None
Advisors Asset Management, Inc.2024-09-302026-08-223,560$272,447None
Advisors Asset Management, Inc.2024-06-302026-08-222,807$222,399None
Advisors Asset Management, Inc.2024-12-312026-08-224,539$354,496None
Advisors Asset Management, Inc.2025-12-312026-08-223,078$197,669None
Assenagon Asset Management S.A.2026-06-302026-08-22104,202$5,478,941None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-204,557$239,608None
Ensign Peak Advisors, Inc2026-03-312026-08-193,368$202,282None
Ensign Peak Advisors, Inc2025-12-312026-08-193,368$216,293None
Ensign Peak Advisors, Inc2025-09-302026-08-1910,718$775,662None
Fulcrum Asset Management LLP2026-06-302026-08-19172$8,965None
Corient Private Wealth LP2026-06-302026-08-184,456$234,295None
Empowered Funds, LLC2026-06-302026-08-1837,411$1,967,070None
Empowered Funds, LLC2026-06-302026-08-186,528$343,242None
Empowered Funds, LLC2026-06-302026-08-182,632$138,391None
Empowered Funds, LLC2026-06-302026-08-18144$7,572None
Transamerica Financial Advisors, LLC2026-06-302026-08-1830$1,611None
UNITED CAPITAL FINANCIAL ADVISORS, LLC2026-06-302026-08-184,022$211,477None
FORMULA GROWTH LTD2026-06-302026-08-1815,900$836,022None
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO2026-06-302026-08-1818,086$950,962None
Graham Capital Management, L.P.2026-06-302026-08-1568,192$3,585,535None
SEI INVESTMENTS CO2026-06-302026-08-1593,751$4,929,428None
SEI INVESTMENTS CO2026-06-302026-08-1530,762$1,617,890None
SEI INVESTMENTS CO2026-06-302026-08-15181,473$9,541,850None
Federation des caisses Desjardins du Quebec2026-06-302026-08-15127$6,680None
Federation des caisses Desjardins du Quebec2026-06-302026-08-154,244$223,150None
Advisors Asset Management, Inc.2026-06-302026-08-1528,516$1,499,371None
Quarry LP2026-06-302026-08-1568$3,576None
Ameritas Advisory Services, LLC2026-06-302026-08-155,701$299,759None
XTX Topco Ltd2026-06-302026-08-1519,231$1,011,166None
Aquatic Capital Management LLC2026-06-302026-08-1548,537$2,552,075None
Treasurer of the State of North Carolina2026-06-302026-08-1525,343$1,333,000None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15808,225$42,496,471None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15808,225$42,496,471None
WORLDQUANT MILLENNIUM ADVISORS LLC2026-06-302026-08-1565,680$3,453,454None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗B. Riley Wealth Advisors, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.