DLB

SEC source: 0001209191-16-155890 · doc4.xml · derivative · entry 2

Dolby Dagmar · CIK 0001537372 · 10% owner

MARITAL TRUST UNDER DOLBY FAMILY TRUST DATED MAY 7, 1999 · CIK 0001598817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 23,847,797

Underlying: Class A Common Stock · 1,473,301 shares

Expires not disclosed

F1 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F2 · kind: On December 15, 2016, each of the Ray Dolby 2011 Trust A and the Ray Dolby 2011 Trust B transferred to the Marital Trust (each such trust as defined below) all securities of the Issuer held of record by each such trust, totaling (i) 1,473,301 shares of Class B Common Stock transferred by the Ray Dolby 2011 Trust A and (ii) 1,474,365 shares of Class B Common Stock transferred by the Ray Dolby 2011 Trust B. Each such share transfer was made pursuant to the terms of the trust instruments for the Ray Dolby 2011 Trust A and the Ray Dolby 2011 Trust B, respectively, for tax and estate planning purposes and for no value, and no reporting person received any funds or other consideration in exchange for such share transfers.

F1 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F1 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · ownership.nature: 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, son of Dagmar Dolby, as Special Trustee of the Marital Trust. This report is filed jointly by Dagmar Dolby and the Marital Trust with respect to the securities held and transactions effected by the Marital Trust. The reporting persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein.

SEC source: 0001209191-16-155890 · doc4.xml · derivative · entry 1

Dolby Dagmar · CIK 0001537372 · 10% owner

MARITAL TRUST UNDER DOLBY FAMILY TRUST DATED MAY 7, 1999 · CIK 0001598817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

Underlying: Class A Common Stock · 1,473,301 shares

Expires not disclosed

F1 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F2 · kind: On December 15, 2016, each of the Ray Dolby 2011 Trust A and the Ray Dolby 2011 Trust B transferred to the Marital Trust (each such trust as defined below) all securities of the Issuer held of record by each such trust, totaling (i) 1,473,301 shares of Class B Common Stock transferred by the Ray Dolby 2011 Trust A and (ii) 1,474,365 shares of Class B Common Stock transferred by the Ray Dolby 2011 Trust B. Each such share transfer was made pursuant to the terms of the trust instruments for the Ray Dolby 2011 Trust A and the Ray Dolby 2011 Trust B, respectively, for tax and estate planning purposes and for no value, and no reporting person received any funds or other consideration in exchange for such share transfers.

F1 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F1 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F3 · ownership.nature: 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 2011 Trust A, dated December 14, 2011 (the "Ray Dolby 2011 Trust A"), voting power of which is held by Thomas E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust A. This report is filed by Dagmar Dolby with respect to the securities held and transactions effected by the Ray Dolby 2011 Trust A. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-152737 · doc4.xml · nonDerivative · entry 2

SHERMAN MARK ANDREW · CIK 0001256708 · EVP, GEN. COUN. & SECRTY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,144

F1 · kind: Gifts to charitable and/or non-profit organizations.

F2 · balance_after: Shares held following the reported transactions include 32,070 shares of Class A common stock underlying restricted stock units, which are subject to forfeiture until they vest.

SEC source: 0001209191-16-152737 · doc4.xml · nonDerivative · entry 1

SHERMAN MARK ANDREW · CIK 0001256708 · EVP, GEN. COUN. & SECRTY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,241

F1 · kind: Gifts to charitable and/or non-profit organizations.

F2 · balance_after: Shares held following the reported transactions include 32,070 shares of Class A common stock underlying restricted stock units, which are subject to forfeiture until they vest.

SEC source: 0001209191-16-151726 · doc4.xml · derivative · entry 3

CHEW LEWIS · CIK 0001224994 · EVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 63,700

Underlying: Class A Common Stock · 15,000 shares

Expires 2022-12-21

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: This option was granted for a total of 98,700 shares of Class A Common Stock. 1/4 of the total number of shares issuable under the option vested on the first anniversary of December 21, 2012, the vesting commencement date, and the balance of the shares vest in equal monthly installments over the next 36 months thereafter.

SEC source: 0001209191-16-151726 · doc4.xml · nonDerivative · entry 2

CHEW LEWIS · CIK 0001224994 · EVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 76,604

F1 · balance_after: Shares held following the reported transactions include 43,473 restricted stock units, which are subject to forfeiture until they vest.

SEC source: 0001209191-16-151726 · doc4.xml · nonDerivative · entry 1

CHEW LEWIS · CIK 0001224994 · EVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,604

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Shares held following the reported transactions include 43,473 restricted stock units, which are subject to forfeiture until they vest.

SEC source: 0001209191-16-148662 · doc4.xml · derivative · entry 9

Dolby Dagmar · CIK 0001537372 · 10% owner

DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999 · CIK 0001598813 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 12,136,194

Underlying: Class A Common Stock · 330,000 shares

Expires not disclosed

F4 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F2 · kind: On November 3, 2016, the Dagmar Dolby Trust (as defined below) (i) converted 330,000 shares of Class B Common Stock into the same number of shares of Class A Common Stock, and (ii) gifted all such shares of Class A Common Stock to the Dagmar Dolby Fund, a charitable organization of which Dagmar Dolby serves as one of three directors.

F4 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F3 · ownership.nature: 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, 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 persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein.

SEC source: 0001209191-16-148662 · doc4.xml · derivative · entry 8

Dolby Dagmar · CIK 0001537372 · 10% owner

DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999 · CIK 0001598813 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 12,466,194

Underlying: Class A Common Stock · 520,000 shares

Expires not disclosed

F4 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F6 · kind: On November 3, 2016, (i) the Family LLC (as defined below) distributed 520,000 shares of Class B Common Stock to each of its two members, which are Dolby family trusts of which Dagmar Dolby serves as the trustee, (ii) each such member of the Family LLC transferred all such shares to the Dagmar Dolby Trust, (iii) the Dagmar Dolby Trust transferred 520,000 shares of Class B Common Stock back to each such member of the Family LLC, and (iv) each such member of the Family LLC contributed all such shares to the Family LLC. All of these share transfers were made for tax and estate planning purposes and for no value, and no reporting person received any funds or other consideration in exchange for any such share transfers.

F4 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F3 · ownership.nature: 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, 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 persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein.

SEC source: 0001209191-16-148662 · doc4.xml · derivative · entry 7

Dolby Dagmar · CIK 0001537372 · 10% owner

DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999 · CIK 0001598813 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 12,986,194

Underlying: Class A Common Stock · 520,000 shares

Expires not disclosed

F4 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F6 · kind: On November 3, 2016, (i) the Family LLC (as defined below) distributed 520,000 shares of Class B Common Stock to each of its two members, which are Dolby family trusts of which Dagmar Dolby serves as the trustee, (ii) each such member of the Family LLC transferred all such shares to the Dagmar Dolby Trust, (iii) the Dagmar Dolby Trust transferred 520,000 shares of Class B Common Stock back to each such member of the Family LLC, and (iv) each such member of the Family LLC contributed all such shares to the Family LLC. All of these share transfers were made for tax and estate planning purposes and for no value, and no reporting person received any funds or other consideration in exchange for any such share transfers.

F4 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F3 · ownership.nature: 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, 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 persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein.

SEC source: 0001209191-16-148662 · doc4.xml · derivative · entry 6

Dolby Dagmar · CIK 0001537372 · 10% owner

DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999 · CIK 0001598813 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 13,506,194

Underlying: Class A Common Stock · 520,000 shares

Expires not disclosed

F4 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F6 · kind: On November 3, 2016, (i) the Family LLC (as defined below) distributed 520,000 shares of Class B Common Stock to each of its two members, which are Dolby family trusts of which Dagmar Dolby serves as the trustee, (ii) each such member of the Family LLC transferred all such shares to the Dagmar Dolby Trust, (iii) the Dagmar Dolby Trust transferred 520,000 shares of Class B Common Stock back to each such member of the Family LLC, and (iv) each such member of the Family LLC contributed all such shares to the Family LLC. All of these share transfers were made for tax and estate planning purposes and for no value, and no reporting person received any funds or other consideration in exchange for any such share transfers.

F4 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F3 · ownership.nature: 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, 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 persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein.

SEC source: 0001209191-16-148662 · doc4.xml · derivative · entry 5

Dolby Dagmar · CIK 0001537372 · 10% owner

DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999 · CIK 0001598813 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 12,986,194

Underlying: Class A Common Stock · 520,000 shares

Expires not disclosed

F4 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F6 · kind: On November 3, 2016, (i) the Family LLC (as defined below) distributed 520,000 shares of Class B Common Stock to each of its two members, which are Dolby family trusts of which Dagmar Dolby serves as the trustee, (ii) each such member of the Family LLC transferred all such shares to the Dagmar Dolby Trust, (iii) the Dagmar Dolby Trust transferred 520,000 shares of Class B Common Stock back to each such member of the Family LLC, and (iv) each such member of the Family LLC contributed all such shares to the Family LLC. All of these share transfers were made for tax and estate planning purposes and for no value, and no reporting person received any funds or other consideration in exchange for any such share transfers.

F4 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F3 · ownership.nature: 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, 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 persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein.

SEC source: 0001209191-16-148662 · doc4.xml · derivative · entry 4

Dolby Dagmar · CIK 0001537372 · 10% owner

DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999 · CIK 0001598813 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 12,466,194

Underlying: Class A Common Stock · 730,000 shares

Expires not disclosed

F4 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F5 · kind: On November 3, 2016, (i) the Family LLC (as defined below) distributed 730,000 shares of Class B Common Stock to each of its two members, which are Dolby family trusts of which Dagmar Dolby serves as the trustee, and (ii) each such member of the Family LLC transferred all such shares to the Dagmar Dolby Trust. All such shares were acquired by the Dagmar Dolby Trust in good faith in connection with a debt previously contracted and, pursuant to Section 16(b) of the Securities Exchange Act of 1934, such acquisitions are exempt from the application of such section.

F4 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F3 · ownership.nature: 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, 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 persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein.

SEC source: 0001209191-16-148662 · doc4.xml · derivative · entry 3

Dolby Dagmar · CIK 0001537372 · 10% owner

DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999 · CIK 0001598813 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 11,736,194

Underlying: Class A Common Stock · 730,000 shares

Expires not disclosed

F4 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F5 · kind: On November 3, 2016, (i) the Family LLC (as defined below) distributed 730,000 shares of Class B Common Stock to each of its two members, which are Dolby family trusts of which Dagmar Dolby serves as the trustee, and (ii) each such member of the Family LLC transferred all such shares to the Dagmar Dolby Trust. All such shares were acquired by the Dagmar Dolby Trust in good faith in connection with a debt previously contracted and, pursuant to Section 16(b) of the Securities Exchange Act of 1934, such acquisitions are exempt from the application of such section.

F4 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F3 · ownership.nature: 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, 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 persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein.

SEC source: 0001209191-16-148662 · doc4.xml · nonDerivative · entry 2

Dolby Dagmar · CIK 0001537372 · 10% owner

DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999 · CIK 0001598813 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F2 · kind: On November 3, 2016, the Dagmar Dolby Trust (as defined below) (i) converted 330,000 shares of Class B Common Stock into the same number of shares of Class A Common Stock, and (ii) gifted all such shares of Class A Common Stock to the Dagmar Dolby Fund, a charitable organization of which Dagmar Dolby serves as one of three directors.

F3 · ownership.nature: 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, 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 persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein.

SEC source: 0001209191-16-148662 · doc4.xml · nonDerivative · entry 1

Dolby Dagmar · CIK 0001537372 · 10% owner

DAGMAR DOLBY TRUST UNDER DOLBY FAMILY TRUST INSTRUMENT DATED MAY 7, 1999 · CIK 0001598813 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 330,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each share of Class A Common Stock was issued upon conversion of one share of Class B Common Stock at the election of the reporting person.

F2 · kind: On November 3, 2016, the Dagmar Dolby Trust (as defined below) (i) converted 330,000 shares of Class B Common Stock into the same number of shares of Class A Common Stock, and (ii) gifted all such shares of Class A Common Stock to the Dagmar Dolby Fund, a charitable organization of which Dagmar Dolby serves as one of three directors.

F3 · ownership.nature: 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, 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 persons disclaim beneficial ownership of these securities except to the extent of their respective pecuniary interest therein.

SEC source: 0001209191-16-145578 · doc4.xml · derivative · entry 9

YEAMAN KEVIN J · CIK 0001200469 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By the Kevin and Rachel Yeaman Family Trust, dated May 14, 2009

Disclosed balance after: 87,655

Underlying: Class A Common Stock · 152 shares

Expires 2019-03-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: This option was granted for a total of 134,757 shares of Class A Common Stock and became fully vested on March 16, 2013.

SEC source: 0001209191-16-145578 · doc4.xml · nonDerivative · entry 6

YEAMAN KEVIN J · CIK 0001200469 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By the Kevin and Rachel Yeaman Family Trust, dated May 14, 2009

Disclosed balance after: 117,121

SEC source: 0001209191-16-145578 · doc4.xml · nonDerivative · entry 5

YEAMAN KEVIN J · CIK 0001200469 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By the Kevin and Rachel Yeaman Family Trust, dated May 14, 2009

Disclosed balance after: 117,273

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-16-145578 · doc4.xml · derivative · entry 8

YEAMAN KEVIN J · CIK 0001200469 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By the Kevin and Rachel Yeaman Family Trust, dated May 14, 2009

Disclosed balance after: 87,807

Underlying: Class A Common Stock · 1,701 shares

Expires 2019-03-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: This option was granted for a total of 134,757 shares of Class A Common Stock and became fully vested on March 16, 2013.

SEC source: 0001209191-16-145578 · doc4.xml · nonDerivative · entry 4

YEAMAN KEVIN J · CIK 0001200469 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By the Kevin and Rachel Yeaman Family Trust, dated May 14, 2009

Disclosed balance after: 117,121

SEC source: 0001209191-16-145578 · doc4.xml · nonDerivative · entry 3

YEAMAN KEVIN J · CIK 0001200469 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By the Kevin and Rachel Yeaman Family Trust, dated May 14, 2009

Disclosed balance after: 118,822

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-16-145578 · doc4.xml · derivative · entry 7

YEAMAN KEVIN J · CIK 0001200469 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By the Kevin and Rachel Yeaman Family Trust, dated May 14, 2009

Disclosed balance after: 89,508

Underlying: Class A Common Stock · 20,249 shares

Expires 2019-03-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: This option was granted for a total of 134,757 shares of Class A Common Stock and became fully vested on March 16, 2013.

SEC source: 0001209191-16-145578 · doc4.xml · nonDerivative · entry 2

YEAMAN KEVIN J · CIK 0001200469 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By the Kevin and Rachel Yeaman Family Trust, dated May 14, 2009

Disclosed balance after: 117,121

F1 · price: This transaction was executed in multiple trades at prices ranging from $55 to $55.02. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

SEC source: 0001209191-16-145578 · doc4.xml · nonDerivative · entry 1

YEAMAN KEVIN J · CIK 0001200469 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By the Kevin and Rachel Yeaman Family Trust, dated May 14, 2009

Disclosed balance after: 137,370

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-16-141165 · doc4.xml · derivative · entry 3

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 160,592

Underlying: Class A Common Stock · 50,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F2 · ownership.nature: 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 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.

SEC source: 0001209191-16-141165 · doc4.xml · nonDerivative · entry 2

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F3 · price: The shares were sold in multiple transactions at prices ranging from $48.30 to $48.86, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F2 · ownership.nature: 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 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.

SEC source: 0001209191-16-141165 · doc4.xml · nonDerivative · entry 1

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 50,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each share of Class A Common Stock issued upon conversion of one share of Class B Common Stock at the election of the reporting person.

F2 · ownership.nature: 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 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.

SEC source: 0001209191-16-140945 · doc4.xml · derivative · entry 10

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 210,592

Underlying: Class A Common Stock · 50,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F8 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F8 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F6 · ownership.nature: 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 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 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.

SEC source: 0001209191-16-140945 · doc4.xml · nonDerivative · entry 7

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F6 · ownership.nature: 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 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 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.

SEC source: 0001209191-16-140945 · doc4.xml · nonDerivative · entry 6

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 200

F7 · price: The shares were sold in multiple transactions at prices ranging from $48.66 to $49.65, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F6 · ownership.nature: 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 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 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.

SEC source: 0001209191-16-140945 · doc4.xml · nonDerivative · entry 5

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 50,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each share of Class A Common Stock issued upon conversion of one share of Class B Common Stock at the election of the reporting person.

F6 · ownership.nature: 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 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 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.

SEC source: 0001209191-16-140945 · doc4.xml · derivative · entry 9

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 1,474,365

Underlying: Class A Common Stock · 24,420 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F8 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F8 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · ownership.nature: 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 Ray Dolby 2011 Trust B, dated December 14, 2011 (the "Ray Dolby 2011 Trust B"), voting power of which is held by David E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust B. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140945 · doc4.xml · derivative · entry 8

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 1,473,301

Underlying: Class A Common Stock · 24,418 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F8 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F8 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F2 · ownership.nature: 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 Ray Dolby 2011 Trust A, dated December 14, 2011 (the "Ray Dolby 2011 Trust A"), voting power of which is held by Thomas E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust A. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140945 · doc4.xml · nonDerivative · entry 4

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F5 · price: The shares were sold in multiple transactions at prices ranging from $49.66 to $50.07, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F4 · ownership.nature: 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 Ray Dolby 2011 Trust B, dated December 14, 2011 (the "Ray Dolby 2011 Trust B"), voting power of which is held by David E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust B. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140945 · doc4.xml · nonDerivative · entry 3

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 24,420

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each share of Class A Common Stock issued upon conversion of one share of Class B Common Stock at the election of the reporting person.

F4 · ownership.nature: 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 Ray Dolby 2011 Trust B, dated December 14, 2011 (the "Ray Dolby 2011 Trust B"), voting power of which is held by David E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust B. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140945 · doc4.xml · nonDerivative · entry 2

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F3 · price: The shares were sold in multiple transactions at prices ranging from $49.66 to $50.065, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F2 · ownership.nature: 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 Ray Dolby 2011 Trust A, dated December 14, 2011 (the "Ray Dolby 2011 Trust A"), voting power of which is held by Thomas E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust A. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140945 · doc4.xml · nonDerivative · entry 1

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 24,418

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each share of Class A Common Stock issued upon conversion of one share of Class B Common Stock at the election of the reporting person.

F2 · ownership.nature: 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 Ray Dolby 2011 Trust A, dated December 14, 2011 (the "Ray Dolby 2011 Trust A"), voting power of which is held by Thomas E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust A. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · derivative · entry 12

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 1,498,785

Underlying: Class A Common Stock · 25,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F7 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F7 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · ownership.nature: 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 Ray Dolby 2011 Trust B, dated December 14, 2011 (the "Ray Dolby 2011 Trust B"), voting power of which is held by David E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust B. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · derivative · entry 11

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 1,497,719

Underlying: Class A Common Stock · 25,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F7 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F7 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F2 · ownership.nature: 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 Ray Dolby 2011 Trust A, dated December 14, 2011 (the "Ray Dolby 2011 Trust A"), voting power of which is held by Thomas E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust A. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · nonDerivative · entry 8

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F6 · price: The shares were sold in multiple transactions at prices ranging from $49.62 to $50.095, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F4 · ownership.nature: 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 Ray Dolby 2011 Trust B, dated December 14, 2011 (the "Ray Dolby 2011 Trust B"), voting power of which is held by David E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust B. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · nonDerivative · entry 7

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 25,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each share of Class A Common Stock issued upon conversion of one share of Class B Common Stock at the election of the reporting person.

F4 · ownership.nature: 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 Ray Dolby 2011 Trust B, dated December 14, 2011 (the "Ray Dolby 2011 Trust B"), voting power of which is held by David E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust B. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · nonDerivative · entry 6

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F6 · price: The shares were sold in multiple transactions at prices ranging from $49.62 to $50.095, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F2 · ownership.nature: 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 Ray Dolby 2011 Trust A, dated December 14, 2011 (the "Ray Dolby 2011 Trust A"), voting power of which is held by Thomas E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust A. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · nonDerivative · entry 5

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 25,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each share of Class A Common Stock issued upon conversion of one share of Class B Common Stock at the election of the reporting person.

F2 · ownership.nature: 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 Ray Dolby 2011 Trust A, dated December 14, 2011 (the "Ray Dolby 2011 Trust A"), voting power of which is held by Thomas E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust A. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · derivative · entry 10

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 1,523,785

Underlying: Class A Common Stock · 25,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F7 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F7 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F4 · ownership.nature: 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 Ray Dolby 2011 Trust B, dated December 14, 2011 (the "Ray Dolby 2011 Trust B"), voting power of which is held by David E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust B. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · derivative · entry 9

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 1,522,719

Underlying: Class A Common Stock · 25,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_price: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F7 · derivative.exercise_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F7 · derivative.expiration_date: Shares of Class B Common Stock are convertible, at no cost, at any time at the option of the holder into shares of Class A Common Stock on a 1-for-1 basis.

F2 · ownership.nature: 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 Ray Dolby 2011 Trust A, dated December 14, 2011 (the "Ray Dolby 2011 Trust A"), voting power of which is held by Thomas E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust A. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · nonDerivative · entry 4

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F5 · price: The shares were sold in multiple transactions at prices ranging from $49.36 to $49.98, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F4 · ownership.nature: 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 Ray Dolby 2011 Trust B, dated December 14, 2011 (the "Ray Dolby 2011 Trust B"), voting power of which is held by David E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust B. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · nonDerivative · entry 3

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 25,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each share of Class A Common Stock issued upon conversion of one share of Class B Common Stock at the election of the reporting person.

F4 · ownership.nature: 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 Ray Dolby 2011 Trust B, dated December 14, 2011 (the "Ray Dolby 2011 Trust B"), voting power of which is held by David E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust B. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · nonDerivative · entry 2

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F3 · price: The shares were sold in multiple transactions at prices ranging from $49.38 to $49.99, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F2 · ownership.nature: 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 Ray Dolby 2011 Trust A, dated December 14, 2011 (the "Ray Dolby 2011 Trust A"), voting power of which is held by Thomas E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust A. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.

SEC source: 0001209191-16-140557 · doc4.xml · nonDerivative · entry 1

Dolby Dagmar · CIK 0001537372 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 25,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each share of Class A Common Stock issued upon conversion of one share of Class B Common Stock at the election of the reporting person.

F2 · ownership.nature: 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 Ray Dolby 2011 Trust A, dated December 14, 2011 (the "Ray Dolby 2011 Trust A"), voting power of which is held by Thomas E. Dolby, son of Dagmar Dolby, as Special Trustee of the Ray Dolby 2011 Trust A. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein.