Nextdoor accounting chief sells 10,800 shares

The option exercise was followed by a one-for-one conversion from Class B to Class A before the Class A sale.

Rhea-AI Filing Summary

Nextdoor Holdings, Inc. (NXDR) Chief Accounting Officer Antoinette How exercised a fully vested option for 10,800 Class B shares at $2.41 per share on October 13, 2026. The shares converted one-for-one into Class A shares, and she sold 10,800 Class A shares at a weighted average $2.7203 per share. The option exercise and sale were made under a Rule 10b5-1 plan adopted June 3, 2026; reported sale prices ranged from $2.72 to $2.7250 per share, inclusive. Her reported stock-option position after the exercise was 40,186 shares.

Insider Trade Summary 10b5-1

Exercise and sale activity reported; no spread calculated

Exercise and Sale 5 txns

Insider How Antoinette

Role Chief Accounting Officer

Sold 10,800 shs ($29K)

Approx. gross sale proceeds $29K

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy) F1, F3	10,800	$0.00	$0.00
Exercise	Class B Common Stock F4, F1	10,800	$0.00	$0.00
Conversion	Class B Common Stock F4	10,800	$0.00	$0.00
Conversion	Class A Common Stock	10,800	$0.00	$0.00
Sale	Class A Common Stock F1, F2	10,800	$2.7203	$29K

Holdings After Transaction: Stock Option (Right to Buy) — 40,186 contracts (Direct); Class B Common Stock — 0 contracts (Direct); Class A Common Stock — 0 shares (Direct)

Footnotes (4)

1. F1. This transaction was entered into pursuant to and in accordance with the requirements of Rule 10b5-1 under the Securities Exchange Act of 1934, as amended, under a plan adopted by the Reporting Person on June 3, 2026.
2. F2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.72 to $2.7250 per share, 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.
3. F3. The stock option award is fully vested and exercisable.
4. F4. Each share of Class B Common Stock is convertible into one share of Class A Common Stock of the Issuer at the election of the holder any time; provided; however, that each share of Class B Common Stock shall automatically be converted into Class A Common Stock on a one-for-one basis on the earlier of the: (i) tenth anniversary of the completion of the Business Combination or (ii) date specified by the affirmative vote of the holders of two-thirds of the Class B Common Stock then outstanding. In addition, each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value (subject to certain exceptions).

Key Figures

Class B shares acquired through option exercise: 10,800 shares Option exercise price: $2.41 per share Class A shares sold: 10,800 shares +2 more

5 metrics

Class B shares acquired through option exercise 10,800 shares October 13, 2026

Option exercise price $2.41 per share Option exercised on October 13, 2026

Class A shares sold 10,800 shares October 13, 2026

Weighted average sale price $2.7203 per share Sale prices ranged from $2.72 to $2.7250 per share, inclusive

Stock-option shares following transaction 40,186 shares Reported following the October 13, 2026 transaction

Key Terms

Rule 10b5-1, weighted average price, fully vested and exercisable, one-for-one basis

4 terms

Rule 10b5-1 regulatory

"pursuant to and in accordance with the requirements of Rule 10b5-1"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

weighted average price financial

"The reported price in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

fully vested and exercisable financial

"The stock option award is fully vested and exercisable."

one-for-one basis technical

"converted into Class A Common Stock on a one-for-one basis"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many NXDR shares did Antoinette How sell?

Antoinette How, Nextdoor's chief accounting officer, sold 10,800 Class A shares on October 13, 2026, at a weighted average price of $2.7203 per share. The sale was made under a Rule 10b5-1 plan adopted June 3, 2026, and reported sale prices ranged from $2.72 to $2.7250 per share, inclusive.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/15/2026 - 04:01 PM EDT Accepted by SEC EDGAR 10/15/2026 - 04:01 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

How Antoinette

(Last) (First) (Middle)

C/O NEXTDOOR HOLDINGS, INC.

420 TAYLOR STREET

(Street)

SAN FRANCISCO CALIFORNIA 94102

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Nextdoor Holdings, Inc. [ NXDR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Accounting Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/13/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	10/13/2026		C		10,800	A	$0	10,800	D
Class A Common Stock	10/13/2026		S(1)		10,800	D	$2.7203(2)	0	D

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 Securities Underlying Derivative Security (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: 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
Stock Option (Right to Buy)	$2.41	10/13/2026		M(1)			10,800	(3)	03/23/2031	Class B Common Stock	10,800	$0	40,186	D
Class B Common Stock	(4)	10/13/2026		M(1)		10,800		(4)	(4)	Class A Common Stock	10,800	$0(4)	10,800	D
Class B Common Stock	(4)	10/13/2026		C			10,800	(4)	(4)	Class A Common Stock	10,800	$0(4)	0	D

Explanation of Responses:

1. This transaction was entered into pursuant to and in accordance with the requirements of Rule 10b5-1 under the Securities Exchange Act of 1934, as amended, under a plan adopted by the Reporting Person on June 3, 2026.

2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.72 to $2.7250 per share, 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.

3. The stock option award is fully vested and exercisable.

4. Each share of Class B Common Stock is convertible into one share of Class A Common Stock of the Issuer at the election of the holder any time; provided; however, that each share of Class B Common Stock shall automatically be converted into Class A Common Stock on a one-for-one basis on the earlier of the: (i) tenth anniversary of the completion of the Business Combination or (ii) date specified by the affirmative vote of the holders of two-thirds of the Class B Common Stock then outstanding. In addition, each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value (subject to certain exceptions).

Remarks:

	/s/ Sophia Contreras Schwartz, as Attorney-in-Fact for Reporting Person	10/15/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)