SEC Form 4 · accession 0000938333-26-000006

APPFOLIO INC · APPF

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Maurice J Duca

10% Owner

Period of report

Jul 28, 2026

Accepted (ET)

Jul 30, 2026 · 7:41 pm EDT

Rule 10b5-1 plan

yes — trade under a plan

Issuer CIK

0001433195

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Class A Common Stock^F2	Jul 28, 2026	S	1,900	$180.64	D	79,580	D
Class A Common Stock^F3	Jul 28, 2026	S	992	$181.49	D	78,588	D
Class A Common Stock^F4	Jul 28, 2026	S	608	$182.97	D	77,980	D
Class A Common Stock	Jul 28, 2026	S	1,600	$180.00	D	34,198	I	By Family Trust
Class A Common Stock^F2,F5	Jul 28, 2026	S	1,900	$180.59	D	128,540	I	By Pension Trust
Class A Common Stock^F6,F5	Jul 28, 2026	S	1,000	$181.54	D	127,540	I	By Pension Trust
Class A Common Stock^F7,F5	Jul 28, 2026	S	1,800	$183.40	D	125,740	I	By Pension Trust
Class A Common Stock^F5	Jul 28, 2026	S	900	$184.00	D	124,840	I	By Pension Trust
Class A Common Stock^F8	Jul 29, 2026	S	900	$181.07	D	77,080	D
Class A Common Stock^F9	Jul 29, 2026	S	200	$183.17	D	76,880	D
Class A Common Stock^F10	Jul 29, 2026	S	300	$184.47	D	76,580	D
Class A Common Stock^F11	Jul 29, 2026	S	900	$186.05	D	75,680	D
Class A Common Stock^F12	Jul 29, 2026	S	1,200	$187.68	D	74,480	D
Class A Common Stock	Jul 29, 2026	S	1,600	$180.00	D	32,598	I	By Family Trust
Class A Common Stock^F13,F5	Jul 29, 2026	S	900	$180.97	D	123,940	I	By Pension Trust
Class A Common Stock^F9,F5	Jul 29, 2026	S	200	$183.17	D	123,740	I	By Pension Trust
Class A Common Stock^F10,F5	Jul 29, 2026	S	400	$184.48	D	123,340	I	By Pension Trust
Class A Common Stock^F11,F5	Jul 29, 2026	S	800	$186.04	D	122,540	I	By Pension Trust
Class A Common Stock^F14,F5	Jul 29, 2026	S	2,400	$187.64	D	120,140	I	By Pension Trust
Class A Common Stock^F15,F5	Jul 29, 2026	S	900	$188.23	D	119,240	I	By Pension Trust
Class A Common Stock^F16	Jul 30, 2026	S	389	$180.13	D	74,091	D
Class A Common Stock^F17	Jul 30, 2026	S	230	$181.39	D	73,861	D
Class A Common Stock	Jul 30, 2026	S	199	$182.34	D	73,662	D
Class A Common Stock^F18	Jul 30, 2026	S	178	$180.13	D	32,420	I	By Family Trust
Class A Common Stock^F17	Jul 30, 2026	S	105	$181.39	D	32,315	I	By Family Trust
Class A Common Stock	Jul 30, 2026	S	91	$182.34	D	32,224	I	By Family Trust
Class A Common Stock^F16,F5	Jul 30, 2026	S	624	$180.13	D	118,616	I	By Pension Trust
Class A Common Stock^F17,F5	Jul 30, 2026	S	365	$181.39	D	118,251	I	By Pension Trust
Class A Common Stock^F5	Jul 30, 2026	S	319	$182.34	D	117,932	I	By Pension Trust
Class A Common Stock^F19	holding	—	—		—	26,667	I	By IGSB Cardinal I, LLC

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1Sales made pursuant to a 10b5-1 trading plan previously adopted by the Reporting Person on March 13, 2026.
F10This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $184.46 to $184.49, 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.
F11This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $185.61 to $186.58, 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.
F12This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $186.99 to $187.97, 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.
F13This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $180.34 to $181.18, 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.
F14This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $186.99 to $187.96, 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.
F15This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $188.02 to $188.35, 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.
F16This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $180.00 to $180.95, 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.
F17This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $181.00 to $181.86, 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.
F18This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $180.00 to $180.56, 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.
F19These 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.
F2This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $180.00 to $180.98, 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.
F3This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $181.00 to $181.95, 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.
F4This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $182.74 to $183.18, 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.
F5These 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.
F6This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $181.00 to $181.94, 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.
F7This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $182.91 to $183.81, 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.
F8This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $180.94 to $181.18, 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.
F9This price reflects the weighted average price at which these shares were sold. The shares were sold in multiple transactions at prices ranging from $183.15 to $183.18, 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.

Remarks

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