Sec Form 4 Filing - Isern Brian M. @ Tricida, Inc. - 2019-02-05

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 Isern Brian M. 2. Issuer Name and Ticker or Trading Symbol Tricida, Inc. [ TCDA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) X __ Other (specify below) possible member of 10% group (Last) (First) (Middle) 500 YALE AVE N 3. Date of Earliest Transaction (MM/DD/YY) 02/05/2019 (Street) SEATTLE, WA98109 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 02/05/2019 J( 1 ) 245,312 D $ 0 0 I By Sibling Co-Investment LLC ( 2 ) ( 8 ) Common Stock 893,292 I By Sibling Capital Fund II-A L.P. ( 3 ) ( 8 ) Common Stock 3,139,600 I By Sibling Capital Fund II-B L.P. ( 4 ) ( 8 ) Common Stock 1,810,195 I By Sibling Capital Fund II-C L.P. ( 5 ) ( 8 ) Common Stock 599,379 I By Sibling Capital Fund II-D L.P. ( 6 ) ( 8 ) Common Stock 463,158 I By Sibling Insiders Fund II L.P. ( 7 ) ( 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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Isern Brian M. 500 YALE AVE N SEATTLE, WA98109 X possible member of 10% group Sibling Capital Ventures LLC 500 YALE AVE N SEATTLE, WA98109 possible member of 10% group Sibling Co-Investment LLC 500 YALE AVE N SEATTLE, WA98109 possible member of 10% group Signatures /s/ Brian M. Isern 02/07/2019 Signature of Reporting Person Date Sibling Capital Ventures LLC, By: /s/ Brian M. Isern, President 02/07/2019 Signature of Reporting Person Date Sibling Co-Investment LLC, By: Sibling Capital Ventures LLC, its Manager, By: /s/ Brian M. Isern, President 02/07/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Sibling Co-Investment LLC disposed of 245,312 shares of Common Stock of the Issuer through a pro rata distribution to its members. ( 2 )Sibling Capital Ventures LLC is the sole manager of Sibling Co-Investment LLC. As co-manager of Sibling Capital Ventures LLC, Brian M. Isern may be deemed to be an indirect beneficial owner of shares held by Sibling Co-Investment LLC. ( 3 )Sibling Capital Fund II-A L.P. is a direct beneficial owner of 893,292 shares of Common Stock of the Issuer. Sibling Capital Ventures LLC is the sole general partner of Sibling Capital Fund II-A L.P. As co-manager of Sibling Capital Ventures LLC, Brian M. Isern may be deemed to be an indirect beneficial owner of such shares. ( 4 )Sibling Capital Fund II-B L.P. is a direct beneficial owner of 3,139,600 shares of Common Stock of the Issuer. Sibling Capital Ventures II LLC is the sole general partner of Sibling Capital Fund II-B L.P. As co-manager of Sibling Capital Ventures II LLC, Brian M. Isern may be deemed to be an indirect beneficial owner of such shares. ( 5 )Sibling Capital Fund II-C L.P. is a direct beneficial owner of 1,810,195 shares of Common Stock of the Issuer. Sibling Capital Ventures III LLC is the sole general partner of Sibling Capital Fund II-C L.P. As co-manager of Sibling Capital Ventures III LLC, Brian M. Isern may be deemed to be an indirect beneficial owner of such shares. ( 6 )Sibling Capital Fund II-D L.P. is a direct beneficial owner of 599,379 shares of Common Stock of the Issuer. Sibling Capital Ventures IV LLC is the sole general partner of Sibling Capital Fund II-D L.P. As co-manager of Sibling Capital Ventures IV LLC, Brian M. Isern may be deemed to be an indirect beneficial owner of such shares. ( 7 )Sibling Insiders Fund II L.P. is a direct beneficial owner of 463,158 shares of Common Stock of the Issuer. Sibling Insiders II LLC is the sole general partner of Sibling Insiders Fund II L.P. As co-manager of Sibling Insiders II LLC, Brian M. Isern may be deemed to be an indirect beneficial owner of such shares. ( 8 )For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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