Natera holder files notice to sell $700K stock

A trust associated with Natera, Inc. has notified of a potential sale of 2,000 NTRA shares and disclosed significant recent Rule 10b5-1 sales.

Available on EDGAR 09/15/2026 - 04:54 PM EDT Accepted by SEC EDGAR 09/15/2026 - 04:53 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Natera, Inc. (NTRA) is named as the issuer in a notice that the TINKERBELLE II TR U/A DTD 10/22/2021, with trustee Sharon Minto, may sell 2,000 shares of Natera common stock through Morgan Stanley Smith Barney on NASDAQ, with an aggregate market value of $700,014.60. The notice also lists recent Rule 10b5-1 and other sales of Natera common stock over the prior three months by Matthew Rabinowitz and the same trust.

Key Figures

Shares proposed for sale: 2,000 shares Aggregate market value of proposed sale: $700,014.60 Recent 10b5-1 sale 1: 50,000 shares; $16,737,975.00 +5 more

8 metrics

Shares proposed for sale 2,000 shares Common stock of Natera, Inc. to be sold by TINKERBELLE II TR U/A DTD 10/22/2021

Aggregate market value of proposed sale $700,014.60 Proposed sale of 2,000 Natera common shares through Morgan Stanley Smith Barney

Recent 10b5-1 sale 1 50,000 shares; $16,737,975.00 Common stock sold on September 14, 2026 by Matthew Rabinowitz under a 10b5-1 plan

Recent 10b5-1 sale 2 50,000 shares; $16,398,265.00 Common stock sold on September 11, 2026 by Matthew Rabinowitz under a 10b5-1 plan

Trust sale August 7, 2026 2,000 shares; $641,800.00 Common stock sold by TINKERBELLE II TR U/A DTD 10/22/2021

Trust sale July 6, 2026 1,000 shares; $280,000.00 Common stock sold by TINKERBELLE II TR U/A DTD 10/22/2021

Other sale August 3, 2026 731 shares; $195,900.18 Common stock sale by Matthew Rabinowitz

Other sale July 27, 2026 1,718 shares; $447,523.19 Common stock sale by Matthew Rabinowitz

Key Terms

Rule 144, 10b5-1, aggregate market value, Gift from Affiliate, +1 more

5 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 MATTHEW RABINOWITZ 13011 McCallen Pass Building A"

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.

aggregate market value financial

"2000 | 700014.60 | 144144170 | 09/15/2026 | NASDAQ"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

Gift from Affiliate financial

"Common | 03/20/2020 | Gift from Affiliate | ISSUER |"

trustee financial

"Signature | /s/ SHARON MINTO, TRUSTEE ATTENTION:"

A trustee is a person or institution legally appointed to hold and manage assets or enforce an agreement on behalf of other people (beneficiaries). Think of a trustee as a neutral referee or custodian who must act in the beneficiaries’ best interests, follow the trust or contract rules, and handle distributions, recordkeeping and enforcement. Investors care because a trustworthy trustee protects their rights, ensures promised payments or remedies are delivered, and can influence recoveries if things go wrong.

FAQ

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

What does the Form 144 notice disclose for NTRA?

The notice states that TINKERBELLE II TR U/A DTD 10/22/2021 may sell 2,000 shares of Natera, Inc. common stock through Morgan Stanley Smith Barney on NASDAQ, with an aggregate market value of $700,014.60, and lists other recent sales of Natera common stock.

How many Natera (NTRA) shares are proposed to be sold by the trust?

TINKERBELLE II TR U/A DTD 10/22/2021 has given notice of a proposed sale of 2,000 shares of Natera common stock, with an aggregate market value of $700,014.60 as stated in the document.

Which broker is named for the potential NTRA share sale?

The potential sale of 2,000 Natera common shares is listed as being through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004.

What recent 10b5-1 sales of NTRA shares are disclosed?

The document lists Rule 10b5-1 sales by Matthew Rabinowitz of 50,000 shares on September 14, 2026 for $16,737,975.00 and 50,000 shares on September 11, 2026 for $16,398,265.00, among other smaller transactions.

Are there recent sales by the TINKERBELLE II trust in NTRA stock?

Yes. The TINKERBELLE II TR U/A DTD 10/22/2021 is shown selling 2,000 shares of Natera common stock on August 7, 2026 for $641,800.00 and 1,000 shares on July 6, 2026 for $280,000.00.

How were the NTRA shares to be sold by the trust originally acquired?

The shares to be sold by the TINKERBELLE II TR U/A DTD 10/22/2021 are described as acquired on March 20, 2020 as a “Gift from Affiliate” from the issuer.

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

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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	0001646382
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	NATERA, INC.
SEC File Number	001-37478
Address of Issuer	13011 MCCALLEN PASS BUILDING A SUITE 100 AUSTIN TEXAS 78753
Phone	650-249-9090
Name of Person for Whose Account the Securities are To Be Sold	TINKERBELLE II TR U/A DTD 10/22/2021
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
Relationship to Issuer	Director

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	2000	700014.60	144144170	09/15/2026	NASDAQ

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	03/20/2020	Gift from Affiliate	ISSUER		11/26/2003	2000		NA

* 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 MATTHEW RABINOWITZ 13011 McCallen Pass Building A Suite 100 Austin TX 78753	Common	09/14/2026	50000	16737975.00
10b5-1 Sales for MATTHEW RABINOWITZ 13011 McCallen Pass Building A Suite 100 Austin TX 78753	Common	09/11/2026	50000	16398265.00
TINKERBELLE II TR U/A DTD 10/22/2021 13011 McCallen Pass Building A Suite 100 Austin TX 78753	Common	08/07/2026	2000	641800.00
MATTHEW RABINOWITZ 13011 McCallen Pass Building A Suite 100 Austin TX 78753	Common	08/03/2026	731	195900.18
MATTHEW RABINOWITZ 13011 McCallen Pass Building A Suite 100 Austin TX 78753	Common	07/27/2026	1718	447523.19
TINKERBELLE II TR U/A DTD 10/22/2021 13011 McCallen Pass Building A Suite 100 Austin TX 78753	Common	07/06/2026	1000	280000.00

144: Remarks and Signature

Remarks
Date of Notice	09/15/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/05/2025
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/ SHARON MINTO, TRUSTEE
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)