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 OF SECURITIES 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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(Print or Type Responses)

1. Name and Address of Reporting Person * RAUTH WILLIAM R III   2. Issuer Name and Ticker or Trading Symbol APPFOLIO INC [APPF] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O IGSB, INC., 1485 E. VALLEY ROAD, SUITE H 3. Date of Earliest Transaction (Month/Day/Year) 04/16/2018 (Street) SANTA BARBARA, CA 93108 4. If Amendment, Date Original Filed(Month/Day/Year) 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 04/16/2018   S(1)   19,543 (1) D $ 44.406 457 D   Class A Common Stock 04/17/2018   S(1)   457 (1) D $ 44.9 0 D   Class A Common Stock               13,072 I (2) By IGSB IVP III, LLC

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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
RAUTH WILLIAM R III C/O IGSB, INC. 1485 E. VALLEY ROAD, SUITE H SANTA BARBARA, CA 93108	X	X

Signatures

William R. Rauth, III, By: /s/ Kimberly Shea, Attorney-in-Fact for William R. Rauth, III		04/18/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Sale made pursuant to a 10(b)5-1 Plan previously adopted by the Reporting Person.
(2)	These Class A Shares are owned by IGSB IVP III LLC, a private investment fund, which is managed by Investment Group of Santa Barbara LLC ("IGSB"). The Reporting Person is one of the three members of IGSB and all decisions regarding the voting and disposition of these Shares require the unanimous approval of all three of IGSB's members. As a result, the Reporting Person may be deemed to share voting and dispositive power, with IGSB and its other two members, over these Class A Shares. However, the Reporting Person disclaims beneficial ownership of these Class A Shares, except to the extent of any pecuniary interest he may have therein.

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