SEC Form 4 · accession 0001193125-26-374860
Dolby Laboratories, Inc. · DLB
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owners
Dagmar Dolby
10% Owner
Period of report
Aug 28, 2026
Accepted (ET)
Aug 28, 2026 · 6:02 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001308547
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Class A Common StockF1,F3 | Aug 28, 2026 | C | 300,000 | $0.00 | A | 300,000 | I | By Trust |
| Class A Common StockF3 | Aug 28, 2026 | G | 300,000 | $0.00 | D | 0 | I | By Trust |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Class B Common StockF3,F4 | — | Aug 28, 2026 | G | 2,000,000 | D | — | — | Class A Common Stock | 2,000,000 | 4,672,117 | I |
| Class B Common StockF6,F4 | — | Aug 28, 2026 | G | 1,000,000 | A | — | — | Class A Common Stock | 1,000,000 | 1,000,000 | I |
| Class B Common StockF7,F4 | — | Aug 28, 2026 | G | 1,000,000 | A | — | — | Class A Common Stock | 1,000,000 | 1,000,000 | I |
| Class B Common StockF3,F4 | — | Aug 28, 2026 | C | 300,000 | D | — | — | Class A Common Stock | 300,000 | 4,372,117 | I |
| Class B Common StockF8,F4 | — | holding | — | — | — | — | — | Class A Common Stock | — | 160,592 | I |
| Class B Common StockF9,F4 | — | holding | — | — | — | — | — | Class A Common Stock | — | 463,262 | I |
| Class B Common StockF10,F4 | — | holding | — | — | — | — | — | Class A Common Stock | — | 403,600 | I |
| Class B Common StockF11,F4 | — | holding | — | — | — | — | — | Class A Common Stock | — | 24,108,162 | I |
| Class B Common StockF12,F4 | — | holding | — | — | — | — | — | Class A Common Stock | — | 1,040,000 | I |
| Class B Common StockF13,F4 | — | holding | — | — | — | — | — | Class A Common Stock | — | 350,000 | I |
| Class B Common StockF14,F4 | — | holding | — | — | — | — | — | Class A Common Stock | — | 1,000,000 | I |
Explanation of responses
- F1Each 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.
- F10Reflects 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.
- F11Reflects 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.
- F12Reflects 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
- F13Reflects 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.
- F14Reflects 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 2026 Trust AA, dated February 25, 2026 (the "Dagmar Dolby 2026 Trust AA"), voting power over which is held by David E. Dolby as Special Trustee of the Dagmar Dolby 2026 Trust AA. This report is filed by Dagmar Dolby with respect to the securities held by the Dagmar Dolby 2026 Trust AA. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.
- F2On 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").
- F3Reflects 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.
- F4Shares 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.
- F5On August 28, 2026, the Dagmar Dolby Trust contributed a total of 2,000,000 shares of Class B Common Stock: 1,000,000 to a newly formed grantor retained annuity trust, the Dagmar Dolby 2026 Trust AA-2 (as defined below) and 1,000,000 to a newly formed grantor retained annuity trust, the Dagmar Dolby 2026 Trust BB (as defined below). Such share contributions were effected solely for tax and estate planning purposes, and were each a transfer for no value without the payment or receipt of any funds or other consideration by any reporting person in exchange therefor. As such a change in form of indirect beneficial ownership only, applicable rules consider each a share contribution to be exempt from the reporting requirements of Section 16(a) and the provisions of Section 16(b) of the Act, and as a result the reporting persons are voluntarily reporting such share contribution on this Form 4.
- F6Reflects 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 2026 Trust AA-2, dated August 25, 2026 (the "Dagmar Dolby 2026 Trust AA-2"), voting power over which is held by David E. Dolby as Special Trustee of the Dagmar Dolby 2026 Trust AA-2. This report is filed by Dagmar Dolby with respect to the securities held by the Dagmar Dolby 2026 Trust AA-2. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.
- F7Reflects 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 2026 Trust BB, dated August 25, 2026 (the "Dagmar Dolby 2026 Trust BB"), voting power over which is held by David E. Dolby as Special Trustee of the Dagmar Dolby 2026 Trust BB. This report is filed by Dagmar Dolby with respect to the securities held by the Dagmar Dolby 2026 Trust BB. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.
- F8Reflects 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.
- F9Reflects 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, 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.