Sec Form 4 Filing - MV Management X, L.L.C. @ ROKU, INC - 2018-03-26

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person MV Management X, L.L.C. 2. Issuer Name and Ticker or Trading Symbol ROKU, INC [ ROKU] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 2884 SAND HILL ROAD, SUITE 100, 3. Date of Earliest Transaction (MM/DD/YY) 03/26/2018 (Street) MENLO PARK, CA94025 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class B Common Stock 03/26/2018 C 23,388,668 A $ 0 23,388,668 I See footnote ( 1 ) ( 2 ) Class B Common Stock 03/26/2018 J( 3 ) 4,300,000 D 19,088,668 ( 3 ) I See footnote ( 1 ) ( 4 ) Class B Common Stock 03/26/2018 J( 5 ) 1,063,771 A 1,063,771 D Class B Common Stock 03/26/2018 J( 6 ) 1,063,771 D 0 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Class B Common Stock ( 7 ) 03/26/2018 C 23,388,668 ( 7 ) ( 7 ) Class A Common Stock 23,388,668 $ 0 0 I See footnote ( 1 ) ( 2 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other MV Management X, L.L.C. 2884 SAND HILL ROAD, SUITE 100 MENLO PARK, CA94025 X Menlo Ventures X L P 2884 SAND HILL ROAD, SUITE 100 MENLO PARK 94025 X MENLO ENTREPRENEURS FUND X LP 2884 SAND HILL ROAD, SUITE 100 MENLO PARK 94025 X MMEF X LP 2884 SAND HILL ROAD, SUITE 100 MENLO PARK, CA94025 X Signatures MV Management X, L.L.C., /s/ Shawn T. Carolan, Shawn T. Carolan, Managing Member 03/28/2018 Signature of Reporting Person Date Menlo Ventures X, L.P., By: MV Management X, L.L.C., its General Partner, /s/ Shawn T. Carolan, Shawn T. Carolan, Managing Member 03/28/2018 Signature of Reporting Person Date Menlo Entrepreneurs Fund X, L.P., By: MV Management X, L.L.C., its General Partner, /s/ Shawn T. Carolan, Shawn T. Carolan, Managing Member 03/28/2018 Signature of Reporting Person Date MMEF X, L.P., By: MV Management X, L.L.C., its General Partner, /s/ Shawn T. Carolan, Shawn T. Carolan, Managing Member 03/28/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )MV Management X, L.L.C. ("MVM-X") is the sole general partner of Menlo Ventures X, L.P. ("Menlo X"), MMEF X, L.P. ("MMEF X") and Menlo Entrepreneurs Fund X, L.P. ("MEF X" and, collectively with Menlo X and MMEF X, the "Menlo Funds"). MVM-X exercises voting and dispositive power over the shares held by each of the Menlo Funds. Each of the reporting persons disclaims beneficial ownership of the shares reported herein, except to the extent of its proportionate pecuniary interest therein. ( 2 )The shares of Class B Common Stock converted, and the shares of Class A Common Stock received on conversion, were held as follows: (i) 22,795,982 shares held by Menlo X, (ii) 398,925 shares held by MMEF X, and (iii) 193,761 shares held by MEF X. ( 3 )Represents a pro rata in kind distribution of shares of Class A Common Stock, without consideration, by each of Menlo X, MMEF X and MEF X to their respective partners, including their general partner, MVM-X, pursuant to a distribution plan adopted in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934. The shares were distributed as follows: (i) 4,191,035 shares by Menlo X, (ii) 73,342 shares by MMEF X, and (iii) 35,623 shares by MEF X. ( 4 )Following the distributions described in footnote (3), these shares are held as follows: (i) 18,604,947 shares by Menlo X, (ii) 325,583 shares by MMEF X, and (iii) 158,138 shares by MEF X. ( 5 )Represents the receipt of shares by MVM-X in the distributions described in greater detail in footnote (3). ( 6 )Represents a pro-rata in-kind distribution of shares of Class A Common Stock by MVM-X, without consideration, to its members, pursuant to a distribution plan adopted in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934. ( 7 )The Class B Common Stock will convert automatically into Class A Common Stock upon the earlier of: (i) any transfer except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation, (ii) the first "Trading Day," as defined in the Issuer's restated certificate of incorporation, falling on or after the date on which the shares of Class B Common Stock represent less than 10% of the aggregate number of outstanding shares of Class A Common Stock and Class B Common Stock or (iii) the vote of the holders of Class B Common Stock representing at least 66-2/3% of the shares of Class B Common Stock.

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