Sec Form 4 Filing - Buyer Lise J @ Trade Desk, Inc. - 2019-03-14

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 Buyer Lise J 2. Issuer Name and Ticker or Trading Symbol Trade Desk, Inc. [ TTD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O THE TRADE DESK, INC., 42 NORTH CHESTNUT ST. 3. Date of Earliest Transaction (MM/DD/YY) 03/14/2019 (Street) VENTURA, CA93001 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ 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 A Common Stock 03/14/2019 A 507 ( 1 ) A $ 0 ( 2 ) 9,907 D Class A Common Stock 03/14/2019 A 65 ( 3 ) A $ 0 ( 4 ) 9,972 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 Stock Option (Right to Buy) $ 208.23 03/14/2019 A 998 ( 5 ) 03/14/2029 Class A Common Stock 998 $ 0 ( 6 ) 996 D Stock Option (Right to Buy) $ 208.23 03/14/2019 A 136 ( 7 ) 03/14/2029 Class A Common Stock 136 $ 0 ( 8 ) 136 D Stock Option (Right to Buy) $ 208.23 03/14/2019 A 61 ( 7 ) 03/14/2029 Class A Common Stock 61 $ 94.55 ( 9 ) 61 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Buyer Lise J C/O THE TRADE DESK, INC. 42 NORTH CHESTNUT ST. VENTURA, CA93001 X Signatures /s/ Vivian Yang, Attorney-in-Fact for Lise Buyer 03/18/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Grant of restricted stock award under the Issuer's 2016 Equity Incentive Plan. The shares vest in quarterly installments over the three-year period following the grant, subject to the Reporting Person's continuous service as a board member through such date. ( 2 )This restricted stock award was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an initial director equity grant. ( 3 )Grant of restricted stock award under the Issuer's 2016 Equity Incentive Plan. The shares vest in full on the date of the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continuous service as a board member through such date. ( 4 )This restricted stock award was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an annual director equity grant, prorated from the date of grant until the Issuer's next annual meeting date. ( 5 )Grant of option to purchase Class A Common Stock under the Issuer's 2016 Equity Incentive Plan. The shares subject to the option vest in quarterly installments over the three-year period following the grant, subject to the Reporting Person's continuous service as a board member through such date. ( 6 )This option was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an initial director equity grant. ( 7 )Grant of option to purchase Class A Common Stock under the Issuer's 2016 Equity Incentive Plan. The shares subject to the option vest in full on the date of the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continuous service as a board member through such date. ( 8 )This option was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy as an annual director equity grant. ( 9 )This option was issued to the Reporting Person pursuant to the Issuer's Non-Employee Director Compensation Policy in lieu of director retainer fees of $5,795

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).

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