# EDGAR Filing Document

**Accession Number:** 0001537372
**File Stem:** 0001193125-26-051551
**Filing Date:** 2026-2
**Character Count:** 13366
**Document Hash:** 79a78ed02967889bedcde9a8f89ecb2f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-051551.hdr.sgml**: 20260213

**ACCESSION NUMBER**: 0001193125-26-051551

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260211

**FILED AS OF DATE**: 20260213

**DATE AS OF CHANGE**: 20260213

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Dolby Dagmar
- **CENTRAL INDEX KEY:** 0001537372

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-32431
- **FILM NUMBER:** 26633616

**MAIL ADDRESS:**
- **STREET 1:** C/O DOLBY LABORATORIES, INC.
- **STREET 2:** 1275 MARKET STREET
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94103
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999
- **CENTRAL INDEX KEY:** 0001598813

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** CA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-32431
- **FILM NUMBER:** 26633615

**BUSINESS ADDRESS:**
- **STREET 1:** 2515 SCOTT STREET
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94115
- **BUSINESS PHONE:** 415-563-6947

**MAIL ADDRESS:**
- **STREET 1:** 2515 SCOTT STREET
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94115
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Dolby Laboratories, Inc.
- **CENTRAL INDEX KEY:** 0001308547
- **STANDARD INDUSTRIAL CLASSIFICATION:** PATENT OWNERS & LESSORS [6794]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 900199783
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0927

**BUSINESS ADDRESS:**
- **STREET 1:** 1275 MARKET STREET
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94103
- **BUSINESS PHONE:** 415 558 0200

**MAIL ADDRESS:**
- **STREET 1:** 1275 MARKET STREET
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94103

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Dolby Dagmar<br><sub>(Last) (First) (Middle)</sub><br>C/O DOLBY LABORATORIES, INC.<br>1275 MARKET STREET<br><sub>(Street)</sub><br>SAN FRANCISCO, CA 94103<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-11 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Dolby Laboratories, Inc. [ DLB ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999<br><sub>(Last) (First) (Middle)</sub><br>C/O DOLBY LABORATORIES, INC.<br>1275 MARKET STREET<br><sub>(Street)</sub><br>SAN FRANCISCO, CA 94103<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-11 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Dolby Laboratories, Inc. [ DLB ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Class A Common Stock<sup>(1)</sup> | 2026-02-11 |  | C<sup>(2)</sup> |  | 380000 | A | $0 | 380000 | I | By Trust<sup>(3)</sup> |
| Class A Common Stock | 2026-02-11 |  | G<sup>(2)</sup> |  | 380000 | D | $0 | 0 | I | By Trust<sup>(3)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Class B Common Stock | <sup>(4)</sup> | 2026-02-11 |  | C<sup>(2)</sup> |  |  | 380000 | <sup>(4)</sup> | <sup>(4)</sup> | Class A Common Stock | 380000 | $0 | 7682117 | I | By Trust<sup>(3)</sup> |
| Class B Common Stock | <sup>(4)</sup> |  |  |  |  |  |  | <sup>(4)</sup> | <sup>(4)</sup> | Class A Common Stock | <sup>(4)</sup> |  | 160592 | I | By Trust<sup>(5)</sup> |
| Class B Common Stock | <sup>(4)</sup> |  |  |  |  |  |  | <sup>(4)</sup> | <sup>(4)</sup> | Class A Common Stock | <sup>(4)</sup> |  | 463262 | I | By Trust<sup>(6)</sup> |
| Class B Common Stock | <sup>(4)</sup> |  |  |  |  |  |  | <sup>(4)</sup> | <sup>(4)</sup> | Class A Common Stock | <sup>(4)</sup> |  | 403600 | I | By Trust<sup>(7)</sup> |
| Class B Common Stock | <sup>(4)</sup> |  |  |  |  |  |  | <sup>(4)</sup> | <sup>(4)</sup> | Class A Common Stock | <sup>(4)</sup> |  | 24108162 | I | By Trust<sup>(8)</sup> |
| Class B Common Stock | <sup>(4)</sup> |  |  |  |  |  |  | <sup>(4)</sup> | <sup>(4)</sup> | Class A Common Stock | <sup>(4)</sup> |  | 1040000 | I | By LLC<sup>(9)</sup> |
| Class B Common Stock | <sup>(4)</sup> |  |  |  |  |  |  | <sup>(4)</sup> | <sup>(4)</sup> | Class A Common Stock | <sup>(4)</sup> |  | 350000 | I | By LLC<sup>(10)</sup> |

---

### Footnotes:

(1) 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.

(2) 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.

(3) 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.

(4) 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.

(5) 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.

(6) 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.

(7) 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.

(8) 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.

(9) 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

(10) 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.

**Signature:** /s/ Daniel Rodriguez, Attorney-in-Fact  
**Date:** 2026-02-13

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**