Sec Form 4 Filing - SC XI MANAGEMENT LLC @ QUANTENNA COMMUNICATIONS INC - 2016-11-02

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 SC XI MANAGEMENT LLC 2. Issuer Name and Ticker or Trading Symbol QUANTENNA COMMUNICATIONS INC [ QTNA] 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) 2800 SAND HILL ROAD, SUITE 101 3. Date of Earliest Transaction (MM/DD/YY) 11/02/2016 (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 Common Stock 11/02/2016 C 3,108,633 A 3,108,633 I By Sequoia Capital XI, L.P. ( 7 ) Common Stock 11/02/2016 C 338,190 A 338,190 I By Sequoia Capital XI Principals Fund, LLC ( 7 ) Common Stock 11/02/2016 C 98,188 A 98,188 I By Sequoia Technology Partners XI, L.P. ( 7 ) Common Stock 11/02/2016 C 2,583,233 A 2,583,233 I By SC US GF V Holdings, LTD. ( 8 )

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 Series A Preferred Stock ( 1 ) 11/02/2016 C 385,357 ( 1 ) ( 1 ) Common Stock 727,111 $ 0 0 I By Sequoia Capital XI, L.P. ( 7 ) Series A Preferred Stock ( 1 ) 11/02/2016 C 41,923 ( 1 ) ( 1 ) Common Stock 79,102 $ 0 0 I By Sequoia Capital XI Principals Fund, LLC ( 7 ) Series A Preferred Stock ( 1 ) 11/02/2016 C 12,172 ( 1 ) ( 1 ) Common Stock 22,967 $ 0 0 I By Sequoia Technology Partners XI, L.P. ( 7 ) Series B Preferred Stock ( 2 ) 11/02/2016 C 85,753 ( 2 ) ( 2 ) Common Stock 165,777 $ 0 0 I By Sequoia Capital XI, L.P. ( 7 ) Series B Preferred Stock ( 2 ) 11/02/2016 C 9,329 ( 2 ) ( 2 ) Common Stock 18,035 $ 0 0 I By Sequoia Capital XI Principals Fund, LLC ( 7 ) Series B Preferred Stock ( 2 ) 11/02/2016 C 2,708 ( 2 ) ( 2 ) Common Stock 5,235 $ 0 0 I By Sequoia Technology Partners XI, L.P. ( 7 ) Series C Preferred Stock ( 3 ) 11/02/2016 C 117,366 ( 3 ) ( 3 ) Common Stock 232,247 $ 0 0 I By Sequoia Capital XI, L.P. ( 7 ) Series C Preferred Stock ( 3 ) 11/02/2016 C 12,768 ( 3 ) ( 3 ) Common Stock 25,265 $ 0 0 I By Sequoia Capital XI Principals Fund, LLC ( 7 ) Series C Preferred Stock ( 3 ) 11/02/2016 C 3,706 ( 3 ) ( 3 ) Common Stock 7,333 $ 0 0 I By Sequoia Technology Partners XI, L.P. ( 7 ) Series D Preferred Stock ( 4 ) 11/02/2016 C 962,995 ( 4 ) ( 4 ) Common Stock 962,995 $ 0 0 I By Sequoia Capital XI, L.P. ( 7 ) Series D Preferred Stock ( 4 ) 11/02/2016 C 104,766 ( 4 ) ( 4 ) Common Stock 104,766 $ 0 0 I By Sequoia Capital XI Principals Fund, LLC ( 7 ) Series D Preferred Stock ( 4 ) 11/02/2016 C 30,418 ( 4 ) ( 4 ) Common Stock 30,418 $ 0 0 I By Sequoia Technology Partners XI, L.P. ( 7 ) Series E Preferred Stock ( 5 ) 11/02/2016 C 561,493 ( 5 ) ( 5 ) Common Stock 561,493 $ 0 0 I By Sequoia Capital XI, L.P. ( 7 ) Series E Preferred Stock ( 5 ) 11/02/2016 C 61,086 ( 5 ) ( 5 ) Common Stock 61,086 $ 0 0 I By Sequoia Capital XI Principals Fund, LLC ( 7 ) Series E Preferred Stock ( 5 ) 11/02/2016 C 17,736 ( 5 ) ( 5 ) Common Stock 17,736 $ 0 0 I By Sequoia Technology Partners XI, L.P. ( 7 ) Series F-1 Preferred Stock ( 6 ) 11/02/2016 C 459,010 ( 6 ) ( 6 ) Common Stock 459,010 $ 0 0 I By Sequoia Capital XI, L.P. ( 7 ) Series F-1 Preferred Stock ( 6 ) 11/02/2016 C 49,936 ( 6 ) ( 6 ) Common Stock 49,936 $ 0 0 I y Sequoia Capital XI Principals Fund, LLC ( 7 ) Series F-1 Preferred Stock ( 6 ) 11/02/2016 C 14,499 ( 6 ) ( 6 ) Common Stock 14,499 $ 0 0 I By Sequoia Technology Partners XI, L.P. ( 7 ) Series F-1 Preferred Stock ( 6 ) 11/02/2016 C 2,583,233 ( 6 ) ( 6 ) Common Stock 2,583,233 $ 0 0 I By SC US GF V Holdings, LTD. ( 8 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other SC XI MANAGEMENT LLC 2800 SAND HILL ROAD SUITE 101 MENLO PARK, CA94025 X SEQUOIA CAPITAL XI 2800 SAND HILL ROAD SUITE 101 MENLO PARK, CA94025 X SEQUOIA CAPITAL XI PRINCIPALS FUND 2800 SAND HILL ROAD SUITE 101 MENLO PARK, CA94025 X SEQUOIA TECHNOLOGY PARTNERS XI 2800 SAND HILL ROAD SUITE 101 MENLO PARK, CA94025 X SC US GF V Holdings, Ltd. 2800 SAND HILL ROAD SUITE 101 MENLO PARK, CA94025 X LEONE DOUGLAS M 2800 SAND HILL ROAD SUITE 101 MENLO PARK, CA94025 X MORITZ MICHAEL J 2500 SAND HILL ROAD SUIT E 101 MENLO PARK, CA94025 X Signatures /s/ Melinda Dunn, by power of attorney for Douglas M. Leone, a Managing Member of SC XI Management, LLC 11/04/2016 Signature of Reporting Person Date /s/ Melinda Dunn, by power of attorney for Douglas M. Leone, a Managing Member of SC XI Management, LLC, the General Partner of Sequoia Capital XI, L.P. 11/04/2016 Signature of Reporting Person Date /s/ Melinda Dunn, by power of attorney for Douglas M. Leone, a Managing Member of SC XI Management, LLC, the Managing Member of Sequoia Capital XI Principals Fund, LLC 11/04/2016 Signature of Reporting Person Date /s/ Melinda Dunn, by power of attorney for Douglas M. Leone, a Managing Member of SC XI Management, LLC, the General Partner of Sequoia Technology Partners XI, L.P. 11/04/2016 Signature of Reporting Person Date /s/ Melinda Dunn, by power of attorney for Douglas M. Leone, a Director of SC US TTGP, the general partner of GF V Management, the general partner of SC Growth and SC USGF, the shareholders of SC Holdings. 11/04/2016 Signature of Reporting Person Date /s/ Melinda Dunn, by power of attorney for Douglas M. Leone 11/04/2016 Signature of Reporting Person Date /s/ Melinda Dunn, by power of attorney for Michael J. Moritz 11/04/2016 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The Series A Preferred Stock automatically converted into Common Stock on a 1.8868501529052:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date. ( 2 )The Series B Preferred Stock automatically converted into Common Stock on a 1.9332015399022:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date. ( 3 )The Series C Preferred Stock automatically converted into Common Stock on a 1.97882655585238:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date. ( 4 )The Series D Preferred Stock automatically converted into Common Stock on a 1:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date. ( 5 )The Series E Preferred Stock automatically converted into Common Stock on a 1:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date. ( 6 )The Series F-1 Preferred Stock automatically converted into Common Stock on a 1:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date. ( 7 )SC XI Management, LLC ("SC XI Management") is the general partner of Sequoia Capital XI, L.P. ("SC XI") and Sequoia Technology Partners XI, L.P. ("STP XI"), and the managing member of Sequoia Capital XI Principals Fund, LLC ("SC XI PF"). Douglas Leone and Michael Moritz are the managing members of SC XI Management. As a result, each of Messrs. Leone and Moritz and SC XI Management may be deemed to share voting and dispositive power with respect to the shares held by SC XI, STP XI and SC XI PF. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of his or its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes. ( 8 )SC US (TTGP), Ltd. ("SC US TTGP") is the general partner of SCGF V Management, L.P. ("GF V Management"), which is the general partner of each of Sequoia Capital U.S. Growth Fund V, L.P. ("SC Growth") and Sequoia Capital USGF Principals Fund V, L.P. ("SC USGF"). SC Growth and SC USGF together own 100% of the outstanding ordinary shares of SC US GF V Holdings, Ltd. ("SC Holdings"). As a result, SC US TTGP, SC Growth, SC USGF and GF V Management may be deemed to share voting and dispositive power with respect to the shares held by SC Holdings. Each of the filing persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

Remarks: This filing is Part 1 of 2.

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).

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