Maurice J. Duca - 18 Aug 2026 Form 4 Insider Report for APPFOLIO INC (APPF)

Reporting relationship: 10%+ Owner
Issuer ticker: APPF
Reported as of: 18 Aug 2026
Net transaction value: -$1,494,854
SEC form: 4
Accepted by SEC: 20 Aug 2026, 18:35:19 UTC
Prior SEC filing: 18 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Kimberly Shea, Attorney-in-Fact for Maurice J. Duca

Key filing fact

Maurice J. Duca filed Form 4 for APPFOLIO INC (APPF) on 20 Aug 2026.

Key facts

This page summarizes Maurice J. Duca's Form 4 filing for APPFOLIO INC (APPF).
14 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 20 Aug 2026, 18:35.

Change

Previous filing in this sequence was filed on 18 Aug 2026.
Current net transaction value: -$1,494,854.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0000938333 Primary reporting owner

DUCA MAURICE J

Relationship: 10%+ Owner
Address: C/O IGSB, INC., 1485 E. VALLEY ROAD, SUITE H, SANTA BARBARA
Signature: /s/ Kimberly Shea, Attorney-in-Fact for Maurice J. Duca
Signature date: 20 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

APPF transaction

Class A Common Stock

Sale

Transaction value: $46,568
Shares: -219
Change %: -2%
Price: $212.64
Shares after: 11,006
Date: 19 Aug 2026
Ownership: By Family Trust
Footnotes: F1, F2

APPF transaction

Class A Common Stock

Sale

Transaction value: $124,848
Shares: -584
Change %: -5.3%
Price: $213.78
Shares after: 10,422
Date: 19 Aug 2026
Ownership: By Family Trust
Footnotes: F1, F3

APPF transaction

Class A Common Stock

Sale

Transaction value: $109,619
Shares: -510
Change %: -4.9%
Price: $214.94
Shares after: 9,912
Date: 19 Aug 2026
Ownership: By Family Trust
Footnotes: F1, F4

APPF transaction

Class A Common Stock

Sale

Transaction value: $18,973
Shares: -88
Change %: -0.89%
Price: $215.60
Shares after: 9,824
Date: 19 Aug 2026
Ownership: By Family Trust
Footnotes: F1, F5

APPF transaction

Class A Common Stock

Sale

Transaction value: $15,804
Shares: -78
Change %: -0.17%
Price: $202.61
Shares after: 45,054
Date: 19 Aug 2026
Ownership: By Pension Trust
Footnotes: F1, F6

APPF transaction

Class A Common Stock

Sale

Transaction value: $15,910
Shares: -78
Change %: -0.17%
Price: $203.98
Shares after: 44,976
Date: 19 Aug 2026
Ownership: By Pension Trust
Footnotes: F1, F6

APPF transaction

Class A Common Stock

Sale

Transaction value: $27,251
Shares: -132
Change %: -0.29%
Price: $206.45
Shares after: 44,844
Date: 19 Aug 2026
Ownership: By Pension Trust
Footnotes: F1, F6, F7

APPF transaction

Class A Common Stock

Sale

Transaction value: $4,767
Shares: -23
Change %: -0.05%
Price: $207.27
Shares after: 44,821
Date: 19 Aug 2026
Ownership: By Pension Trust
Footnotes: F1, F6

APPF transaction

Class A Common Stock

Sale

Transaction value: $32,623
Shares: -156
Change %: -0.35%
Price: $209.12
Shares after: 44,665
Date: 19 Aug 2026
Ownership: By Pension Trust
Footnotes: F1, F6, F8

APPF transaction

Class A Common Stock

Sale

Transaction value: $49,416
Shares: -234
Change %: -0.52%
Price: $211.18
Shares after: 44,431
Date: 19 Aug 2026
Ownership: By Pension Trust
Footnotes: F1, F6, F9

APPF transaction

Class A Common Stock

Sale

Transaction value: $166,072
Shares: -781
Change %: -1.8%
Price: $212.64
Shares after: 43,650
Date: 19 Aug 2026
Ownership: By Pension Trust
Footnotes: F1, F2, F6

APPF transaction

Class A Common Stock

Sale

Transaction value: $428,629
Shares: -2,005
Change %: -4.6%
Price: $213.78
Shares after: 41,645
Date: 19 Aug 2026
Ownership: By Pension Trust
Footnotes: F1, F3, F6

APPF transaction

Class A Common Stock

Sale

Transaction value: $387,107
Shares: -1,801
Change %: -4.3%
Price: $214.94
Shares after: 39,844
Date: 19 Aug 2026
Ownership: By Pension Trust
Footnotes: F1, F6, F10

APPF transaction

Class A Common Stock

Sale

Transaction value: $67,267
Shares: -312
Change %: -0.78%
Price: $215.60
Shares after: 39,532
Date: 19 Aug 2026
Ownership: By Pension Trust
Footnotes: F1, F5, F6

APPF holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 26,667
Date: 18 Aug 2026
Ownership: By IGSB Cardinal I, LLC
Footnotes: F11

APPF holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 142,857
Date: 18 Aug 2026
Ownership: By IGSB Gaucho Fund I, LLC
Footnotes: F12

APPF holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 9,805
Date: 18 Aug 2026
Ownership: By IGSB Cardinal Core BV, LLC
Footnotes: F13

APPF holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 7,022
Date: 18 Aug 2026
Ownership: By Charitable Remainder Trust
Footnotes: F14

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 14 footnotes

Footnote F1

Sales made pursuant to a 10b5-1 trading plan previously adopted by the Reporting Person on March 13, 2026.

Footnote F2

This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $212.22 to $213.16, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F3

This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $213.31 to $214.30, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F4

This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $214.39 to $215.33, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F5

This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $215.50 to $215.77, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F6

These shares of Class A Common Stock ("Class A Shares") are held by a pension trust of which the Reporting Person is the sole trustee and who, in that capacity, possesses sole voting and sole dispositive power over these Class A Shares. However, the Reporting Person does not possess any pecuniary interest in these Class A Shares.

Footnote F7

This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $206.05 to $207.03, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F8

This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $209.01 to $209.22, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F9

This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $210.94 to $211.67, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F10

This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $214.39 to $215.37, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F11

These Class A Shares are owned by IGSB Cardinal I, LLC, a limited liability company, of which the Reporting Person is the managing member. In that capacity, the Reporting Person possesses sole voting and dispositive power over these Class A Shares. However, the Reporting Person disclaims beneficial ownership in these Class A Shares, except to the extent of any pecuniary interest he may have therein.

Footnote F12

These Class A Shares are owned by IGSB Gaucho Fund I, LLC, a limited liability company, of which the Reporting Person is the managing member. In that capacity, the Reporting Person possesses sole voting and dispositive power over these Class A Shares. However, the Reporting Person disclaims beneficial ownership in these Class A Shares, except to the extent of any pecuniary interest he may have therein.

Footnote F13

These Class A Shares are owned by IGSB Cardinal Core BV, LLC, a limited liability company, of which the Reporting Person is the managing member. In that capacity, the Reporting Person possesses sole voting and dispositive power over these Class A Shares, but he disclaims beneficial ownership in these Class A Shares, except to the extent of any pecuniary interest he may have therein.

Footnote F14

These Class A Shares are held by a trust of which the Reporting Person is a co-trustee and, in that capacity, he may be deemed to share voting and dispositive power over these Class A Shares with the other trustee. However, the Reporting Person does not have a pecuniary interest in, and he disclaims beneficial ownership of, these Class A Shares.

SEC remarks

Due to a 30 line-item limitation in Table I, this is the second of two Forms 4 filed by the Reporting Person on August 20, 2026.