Derivative exercise or conversion — not an open-market buy.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell
View the official recordSEC Form 4 — Statement of Changes in Beneficial OwnershipAll the details
Dates, kept separate
Transaction date
Aug 28, 2026
Reporting period
Not applicable
Filed with the SEC
Aug 29, 2026
10% ownerIndirect holdingOption exercise
Context
Classification
option exercise
Code C — exercise or conversion of a derivative security
Planned / mechanical clue
None found in footnotes
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001193125-26-374860
Filed / recorded
Aug 29, 2026, 2:02 AM UTC
Added to OQRO
Oct 6, 2026, 7:14 PM UTC
Parser
form4-xml-v2
Data quality
Verified: identifiers matched exactly
Issuer
Dolby Laboratories, Inc.
Issuer CIK
1308547
Ticker
DLB
Reporting person
Dolby Dagmar
Relationship
10% owner
Security
Class B Common Stock
Table
Derivative (Table II)
Transaction date
Aug 28, 2026
Transaction code
C
Shares / units
300,000
Price per share
$0.00
Acquired / disposed
Disposed (D)
Shares owned after
4,372,117
Ownership form
Indirect — By Trust
Amendment
No
Footnotes from the filing
Shares of Class B Common Stock are convertible, at no cost, at any time at the election of the holder into shares of Class A Common Stock on a 1-for-1 basis.
On August 28, 2026, the Dagmar Dolby Trust (as defined below) converted 300,000 shares of Class B Common Stock into a like number of shares of Class A Common Stock and gifted all such shares of Class A Common Stock to an unaffiliated charitable organization. The gift transaction is exempt from Section 16(b) by virtue of Rule 16b-5 promulgated under the Securities Exchange Act of 1934, as amended (the "Act").
Reflects shares held of record by Dagmar Dolby as the Trustee of the Dagmar Dolby Trust under the Dolby Family Trust Instrument, dated May 7, 1999 (the "Dagmar Dolby Trust"), voting power of which is shared by the Trustee and David E. Dolby, son of Dagmar Dolby, as Special Trustee of the Dagmar Dolby Trust. This report is filed jointly by Dagmar Dolby and the Dagmar Dolby Trust with respect to the securities held and transactions effected by the Dagmar Dolby Trust. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.
