Dagmar Dolby - 11 Feb 2026 Form 4 Insider Report for Dolby Laboratories, Inc. (DLB)

Role: 10%+ Owner
Signature: /s/ Daniel Rodriguez, Attorney-in-Fact
Issuer symbol: DLB
Transactions as of: 11 Feb 2026
Net transactions value: $0
Form type: 4
Filing time: 13 Feb 2026, 16:30:21 UTC
Previous filing: 21 Feb 2025
Next filing: 27 Feb 2026
SEC: View on sec.gov

Reporting Owners (2)

Name	Relationship	Address	Signature	Signature date	CIK
Dolby Dagmar	10%+ Owner	C/O DOLBY LABORATORIES, INC., 1275 MARKET STREET, SAN FRANCISCO	/s/ Daniel Rodriguez, Attorney-in-Fact	13 Feb 2026	0001537372
DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999	10%+ Owner	C/O DOLBY LABORATORIES, INC., 1275 MARKET STREET, SAN FRANCISCO	/s/ Daniel Rodriguez, Attorney-in-Fact	13 Feb 2026	0001598813

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DLB	Class A Common Stock	Conversion of derivative security	$0	+380,000		$0.000000	380,000	11 Feb 2026	By Trust	F1, F2, F3
transaction	DLB	Class A Common Stock	Gift	$0	-380,000	-100%	$0.000000	0	11 Feb 2026	By Trust	F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	DLB	Class B Common Stock	Conversion of derivative security	$0	-380,000	-4.7%	$0.000000	7,682,117	11 Feb 2026	Class A Common Stock	380,000		By Trust	F2, F3, F4
holding	DLB	Class B Common Stock						160,592	11 Feb 2026	Class A Common Stock			By Trust	F4, F5
holding	DLB	Class B Common Stock						463,262	11 Feb 2026	Class A Common Stock			By Trust	F4, F6
holding	DLB	Class B Common Stock						403,600	11 Feb 2026	Class A Common Stock			By Trust	F4, F7
holding	DLB	Class B Common Stock						24,108,162	11 Feb 2026	Class A Common Stock			By Trust	F4, F8
holding	DLB	Class B Common Stock						1,040,000	11 Feb 2026	Class A Common Stock			By LLC	F4, F9
holding	DLB	Class B Common Stock						350,000	11 Feb 2026	Class A Common Stock			By LLC	F4, F10

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each share of Class A Common Stock was issued upon conversion of one share of Class B Common Stock at the election of, and at no cost to, the reporting person.
F2	On February 11, 2026, the Dagmar Dolby Trust (as defined below) converted 380,000 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 conversion transactions are exempt from Section 16(b) of the Securities Exchange Act of 1934 (the "Act") pursuant to Rule 16b-6(b) promulgated under the Act. The gift transaction is exempt from Section 16(b) by virtue of Rule 16b-5 promulgated under the Act.
F3	Reflects shares of Class B Common Stock (as converted or convertible, as applicable, into a like number of shares of Class A Common Stock) 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 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.
F4	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.
F5	Reflects shares of Class B Common Stock (convertible into a like number of shares of Class A Common Stock) held of record by Dagmar Dolby as the Trustee of the Ray Dolby 2002 Trust A, dated April 19, 2002 (the "Ray Dolby 2002 Trust A"), voting power of which is held by Thomas E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2002 Trust A. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.
F6	Reflects shares of Class B Common Stock (convertible into a like number of shares of Class A Common Stock) held of record by Dagmar Dolby as the Trustee of the Ray Dolby 2002 Trust B, dated April 19, 2002 (the "Ray Dolby 2002 Trust B"), voting power of which is held by David E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2002 Trust B. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.
F7	Reflects shares of Class B Common Stock (convertible into a like number of shares of Class A Common Stock) held of record by Dagmar Dolby as the Trustee of the Dagmar Dolby 2016 Trust B, dated March 23, 2016 (the "Dagmar Dolby 2016 Trust B"), voting power of which is held by David E. Dolby as Special Trustee of the Dagmar Dolby 2016 Trust B. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.
F8	Reflects shares of Class B Common Stock (convertible into a like number of shares of Class A Common Stock) held of record by Dagmar Dolby as the Trustee of the Marital Trust under the Dolby Family Trust instrument, dated May 7, 1999 (the "Marital Trust"), voting power of which is shared by the Trustee and David E. Dolby as Special Trustee of the Marital Trust. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.
F9	Reflects shares of Class B Common Stock (convertible into a like number of shares of Class A Common Stock) held of record by Dolby Holdings II LLC, a limited liability company ("Dolby Holdings II"), investment power over which is held by Dagmar Dolby, manager of Dolby Holdings II, and voting power over which is held by (i) Thomas E. Dolby, a Special Manager of Dolby Holdings II, with respect to 50% of such shares, and (ii) David E. Dolby, a Special Manager of Dolby Holdings II, with respect to 50% of such shares. This report is filed by Dagmar Dolby with respect to the securities held by Dolby Holdings II. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein
F10	Reflects shares of Class B Common Stock (convertible into a like number of shares of Class A Common Stock) held of record by Dolby Holdings III LLC, a limited liability company ("Dolby Holdings III"), investment power over which is held by Dagmar Dolby, the manager of Dolby Holdings III, and voting power over which is held by David E. Dolby, the Special Manager of Dolby Holdings III. This report is filed by Dagmar Dolby with respect to the securities held by Dolby Holdings III. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.