Nextdoor officer plans sale of 40,000 shares

A Nextdoor Holdings, Inc. officer has filed a Rule 144 notice covering a 40,000‑share sale of common stock following an option exercise, with prior 10b5‑1 sales also disclosed.

Rhea-AI Filing Summary

Nextdoor Holdings, Inc. (NXDR) has an officer, Antoinette How, filing a notice of proposed sale of common stock under Rule 144. The notice covers the planned sale of 40,000 shares of common stock, valued at $99,600.00, following an exercise of stock options on September 21, 2026, with sales through Morgan Stanley Smith Barney LLC on the NYSE.

In addition, the filing lists prior Rule 10b5-1 plan sales over the past three months totaling 199,898 shares of common stock for aggregate proceeds of $479,471.03.

Key Figures

Proposed shares to be sold: 40,000 shares Value of proposed sale: $99,600.00 10b5-1 sale on September 15, 2026: 154,893 shares for $375,940.80 +3 more

6 metrics

Proposed shares to be sold 40,000 shares Common stock under Rule 144, tied to option exercise dated September 21, 2026

Value of proposed sale $99,600.00 Estimated value for 40,000 shares of common stock in the Rule 144 notice

10b5-1 sale on September 15, 2026 154,893 shares for $375,940.80 Common stock sold under a 10b5-1 plan for Antoinette Orzano How

10b5-1 sale on September 2, 2026 35,581 shares for $80,117.24 Common stock sold under a 10b5-1 plan for Antoinette Orzano How

10b5-1 sale on July 16, 2026 9,424 shares for $23,412.99 Common stock sold under a 10b5-1 plan for Antoinette Orzano How

Aggregate recent 10b5-1 sales 199,898 shares for $479,471.03 Total of three 10b5-1 sales in the past three months

Key Terms

Rule 144, 10b5-1, Exercise of Stock Options, Form 144

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

10b5-1 regulatory

"10b5-1 Sales for ANTOINETTE ORZANO HOW 420 Taylor Street"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Exercise of Stock Options financial

"Common | 09/21/2026 | Exercise of Stock Options | Issuer"

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

FAQ

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

What does the Form 144 filing disclose for Nextdoor Holdings, Inc. (NXDR)?

The filing discloses that officer Antoinette How has notified of a proposed sale of 40,000 shares of Nextdoor Holdings, Inc. common stock under Rule 144, valued at $99,600.00, following an exercise of stock options dated September 21, 2026.

How many NXDR shares are proposed to be sold in this Rule 144 notice?

The notice covers a proposed sale of 40,000 shares of Nextdoor Holdings, Inc. common stock. The shares are associated with an exercise of stock options on September 21, 2026, with the total value listed as $99,600.00.

What prior 10b5-1 sales by the NXDR officer are reported in the past 3 months?

The filing lists three 10b5-1 sales by Antoinette Orzano How: 154,893 shares for $375,940.80 on September 15, 2026; 35,581 shares for $80,117.24 on September 2, 2026; and 9,424 shares for $23,412.99 on July 16, 2026.

Through which broker and market will the NXDR shares in this Form 144 be sold?

The proposed 40,000-share sale is listed through Morgan Stanley Smith Barney LLC Executive Financial Services at 1 New York Plaza, with the securities identified for trading on the NYSE.

What is the method of acquisition for the NXDR shares to be sold under Form 144?

The 40,000 shares of Nextdoor Holdings, Inc. common stock to be sold are stated as acquired via Exercise of Stock Options from the Issuer, with the transaction dated September 21, 2026 and the consideration listed as Cash.

What total proceeds from recent NXDR sales are disclosed in the Form 144?

The filing reports proceeds of $375,940.80 on September 15, 2026, $80,117.24 on September 2, 2026, and $23,412.99 on July 16, 2026, from 10b5-1 sales, for aggregate disclosed proceeds of $479,471.03 over the past three months.

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

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Available on EDGAR 09/21/2026 - 04:36 PM Accepted by SEC EDGAR 09/21/2026 - 04:36 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002083093
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Nextdoor Holdings, Inc.
SEC File Number	001-40246
Address of Issuer	420 Taylor Street San Francisco CALIFORNIA 94102
Phone	4153440333
Name of Person for Whose Account the Securities are To Be Sold	Antoinette How
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	40000	99600.00	259381559	09/21/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/21/2026	Exercise of Stock Options	Issuer			40000	09/21/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for ANTOINETTE ORZANO HOW 420 Taylor Street San Francisco CA 94102	Common	09/15/2026	154893	375940.80
10b5-1 Sales for ANTOINETTE ORZANO HOW 420 Taylor Street San Francisco CA 94102	Common	09/02/2026	35581	80117.24
10b5-1 Sales for ANTOINETTE ORZANO HOW 420 Taylor Street San Francisco CA 94102	Common	07/16/2026	9424	23412.99

144: Remarks and Signature

Remarks
Date of Notice	09/21/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/03/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Antoinette How
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)