HOW ANTOINETTE (Chief Accounting Officer) sold 20.9% of their position (9.42K shares) of NEXTDOOR HOLDINGS, INC. on the open market

Open‑market sale worth $23.4K — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

HOW ANTOINETTE

Filed: 7/17/2026ACC: 0001846069-26-000148

InsiderHOW ANTOINETTECIK 2083093

→

IssuerNEXTDOOR HOLDINGS, INC.CIK 1846069

Officer· Chief Accounting Officer

Since Sep 2025

-21K

Net shares

Net seller

$52.6K

Total sold

Open market trades

0B · 1S

Total transactions

32.27K acquired · 53.27K disposed

Non-Derivative Transactions9

Class A Common Stock

Direct

M · Option Exercise

+7.35K

Price / share

—

Trade value

—

% of position

30.2%

7/15/2026

24.30K→31.65K

Class A Common Stock

Direct

F · Tax Withholding

−2.63K

Price / share

$2.52

Trade value

$6.64K

% of position

8.3%

7/15/2026

31.65K→29.02K

Class A Common Stock

Direct

M · Option Exercise

+7.35K

Price / share

—

Trade value

—

% of position

25.3%

7/15/2026

29.02K→36.36K

Class A Common Stock

Direct

F · Tax Withholding

−2.63K

Price / share

$2.52

Trade value

$6.64K

% of position

7.2%

7/15/2026

36.36K→33.73K

Class A Common Stock

Direct

M · Option Exercise

+9.48K

Price / share

—

Trade value

—

% of position

28.1%

7/15/2026

33.73K→43.20K

Class A Common Stock

Direct

F · Tax Withholding

−3.40K

Price / share

$2.52

Trade value

$8.56K

% of position

7.9%

7/15/2026

43.20K→39.81K

Class A Common Stock

Direct

M · Option Exercise

+8.10K

Price / share

—

Trade value

—

% of position

20.4%

7/15/2026

39.81K→47.91K

Class A Common Stock

Direct

F · Tax Withholding

−2.91K

Price / share

$2.52

Trade value

$7.32K

% of position

6.1%

7/15/2026

47.91K→45.01K

Class A Common Stock

Direct

S · Sale

−9.42K

Price / share

$2.48

Trade value

$23.41K

% of position

20.9%

7/16/2026

45.01K→35.58K

Total

Net shares

+11.28K

Net value

-$52.57K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	7/15/2026	M · Option Exercise	+7.35K	—	—	30.2%	24.30K	31.65K
Class A Common Stock Direct	7/15/2026	F · Tax Withholding	−2.63K	$2.52	$6.64K	8.3%	31.65K	29.02K
Class A Common Stock Direct	7/15/2026	M · Option Exercise	+7.35K	—	—	25.3%	29.02K	36.36K
Class A Common Stock Direct	7/15/2026	F · Tax Withholding	−2.63K	$2.52	$6.64K	7.2%	36.36K	33.73K
Class A Common Stock Direct	7/15/2026	M · Option Exercise	+9.48K	—	—	28.1%	33.73K	43.20K
Class A Common Stock Direct	7/15/2026	F · Tax Withholding	−3.40K	$2.52	$8.56K	7.9%	43.20K	39.81K
Class A Common Stock Direct	7/15/2026	M · Option Exercise	+8.10K	—	—	20.4%	39.81K	47.91K
Class A Common Stock Direct	7/15/2026	F · Tax Withholding	−2.91K	$2.52	$7.32K	6.1%	47.91K	45.01K
Class A Common Stock Direct	7/16/2026	S · Sale	−9.42K	$2.48	$23.41K	20.9%	45.01K	35.58K
Total			+11.28K		-$52.57K

Derivative Transactions4

Restricted Stock Units (RSU)

Direct

M · Option Exercise

Converts to

Class A Common Stock

7.35K shares

−7.35K

Strike price

Held after

22.04K

Exercisable

—

7/15/2026

Restricted Stock Units (RSU)

Direct

M · Option Exercise

Converts to

Class A Common Stock

7.35K shares

−7.35K

Strike price

Held after

51.42K

Exercisable

—

7/15/2026

Restricted Stock Units (RSU)

Direct

M · Option Exercise

Converts to

Class A Common Stock

9.48K shares

−9.48K

Strike price

Held after

75.83K

Exercisable

—

7/15/2026

Restricted Stock Units (RSU)

Direct

M · Option Exercise

Converts to

Class A Common Stock

8.10K shares

−8.10K

Strike price

Held after

89.16K

Exercisable

—

7/15/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units (RSU) Direct	Class A Common Stock7.35K shares	7/15/2026	M · Option Exercise	−7.35K	—	22.04K
Restricted Stock Units (RSU) Direct	Class A Common Stock7.35K shares	7/15/2026	M · Option Exercise	−7.35K	—	51.42K
Restricted Stock Units (RSU) Direct	Class A Common Stock9.48K shares	7/15/2026	M · Option Exercise	−9.48K	—	75.83K
Restricted Stock Units (RSU) Direct	Class A Common Stock8.10K shares	7/15/2026	M · Option Exercise	−8.10K	—	89.16K