Natera: Matthew Rabinowitz proposes $19.7M share sale

The proposed transaction is listed alongside three recent 50,000-share sales identified as 10b5-1 sales.

Rhea-AI Filing Summary

Natera, Inc. (NTRA) is identified as the issuer in a notice reporting Matthew Rabinowitz’s proposed sale of 50,000 common shares, with an aggregate market value of $19,737,500.00 and an approximate sale date of October 15, 2026. The sales history also lists three earlier sales labeled 10b5-1 Sales, each for 50,000 shares, on September 11, September 14 and September 15, 2026.

Key Figures

Proposed sale shares: 50,000 shares Aggregate market value: $19,737,500.00 Past sale shares: 50,000 shares +2 more

5 metrics

Proposed sale shares 50,000 shares Approximate sale date October 15, 2026

Aggregate market value $19,737,500.00 For the proposed sale

Past sale shares 50,000 shares 10b5-1 Sales, September 15, 2026

Past sale shares 50,000 shares 10b5-1 Sales, September 14, 2026

Past sale shares 50,000 shares 10b5-1 Sales, September 11, 2026

Key Terms

10b5-1 Sales, Previously Exercised Stock Options, aggregate market value

3 terms

10b5-1 Sales regulatory

"10b5-1 Sales for MATTHEW RABINOWITZ"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Previously Exercised Stock Options financial

"Previously Exercised Stock Options"

aggregate market value financial

"aggregate market value 19737500.00"

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.

FAQ

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

How many NTRA shares is Matthew Rabinowitz proposing to sell?

Matthew Rabinowitz’s notice covers a proposed sale of 50,000 Natera common shares, with an aggregate market value of $19,737,500.00 and an approximate sale date of October 15, 2026.

What other NTRA sales appear in the sales history?

The history lists 731 shares attributed to TINKERBELLE II TR U/A DTD 10/22/2021 on August 3, 2026, with a reported amount of $195,900.18, and 1,718 shares attributed to Matthew Rabinowitz on July 27, 2026, with a reported amount of $447,523.19.

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

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Available on EDGAR 10/15/2026 - 04:18 PM EDT Accepted by SEC EDGAR 10/15/2026 - 04:18 PM EDT 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	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, Bldg A Suite 100 Austin TEXAS 78753
Phone	6509809190
Name of Person for Whose Account the Securities are To Be Sold	MATTHEW RABINOWITZ
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	Director
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	50000	19737500.00	144144170	10/15/2026	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	10/15/2026	Previously Exercised Stock Options	Issuer			50000	10/15/2026	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 MATTHEW RABINOWITZ 13011 McCallen Pass, Bldg A Suite 100 Austin TX 78753	Common	09/15/2026	50000	17359280.00
10b5-1 Sales for MATTHEW RABINOWITZ 13011 McCallen Pass, Bldg A Suite 100 Austin TX 78753	Common	09/14/2026	50000	16737975.00
10b5-1 Sales for MATTHEW RABINOWITZ 13011 McCallen Pass, Bldg 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, Bldg A Suite 100 Austin TX 78753	Common	08/03/2026	731	195900.18
MATTHEW RABINOWITZ 13011 McCallen Pass, Bldg A Suite 100 Austin TX 78753	Common	07/27/2026	1718	447523.19

144: Remarks and Signature

Remarks
Date of Notice	10/15/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/12/2026
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/ Matthew Rabinowitz
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)