NTRA Form 144: Notice to Sell 100,000 Shares

Morgan Stanley Smith Barney LLC submits a Form 144 notice listing 100,000 Common shares to be sold, described as proceeds from Previously Exercised Stock Options for cash, with an associated aggregate amount of $21,923,000.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC submits a Form 144 notice listing 100,000 Common shares to be sold, described as proceeds from Previously Exercised Stock Options for cash, with an associated aggregate amount of $21,923,000. The filing also reports 10b5-1 sales by Matthew Rabinowitz of 75,000 and 50,000 Common shares on 03/13/2026 and 03/16/2026, respectively.

Insights

Compliance Counsel

Form 144 lists a proposed broker-facilitated resale of 100,000 Common shares and recent 10b5-1 sales.

The notice states 100,000 Common shares tied to Previously Exercised Stock Options and an aggregate amount of $21,923,000. It separately records two 10b5-1 dispositions by Matthew Rabinowitz of 75,000 and 50,000 shares on 03/13/2026 and 03/16/2026.

Timing and settlement mechanics are not detailed here; subsequent broker reports or Form 4/Form 5 filings would show completed transfers or final proceeds. Review of 10b5-1 plan terms and transaction confirmations is recommended for full compliance context.

Key Figures

Shares listed for resale: 100,000 shares Associated aggregate amount: $21,923,000 10b5-1 sale on 03/13/2026: 75,000 shares +3 more

6 metrics

Shares listed for resale 100,000 shares Form 144 "Securities To Be Sold" entry

Associated aggregate amount $21,923,000 Amount shown alongside 100,000 shares in the excerpt

10b5-1 sale on 03/13/2026 75,000 shares Reported 10b5-1 sale by Matthew Rabinowitz

Proceeds from 03/13/2026 sale $14,175,382.50 Dollar amount shown for the 75,000-share sale

10b5-1 sale on 03/16/2026 50,000 shares Reported 10b5-1 sale by Matthew Rabinowitz

Proceeds from 03/16/2026 sale $9,813,885.00 Dollar amount shown for the 50,000-share sale

Key Terms

Form 144, 10b5-1 Sales, Previously Exercised Stock Options

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

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.

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 | Issuer | Cash"

FAQ

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

What does the NTRA Form 144 disclose?

It discloses a proposed resale of 100,000 Common shares linked to previously exercised options and lists an aggregate figure of $21,923,000. It also records two recent 10b5-1 sales by Matthew Rabinowitz on 03/13/2026 and 03/16/2026.

Who is identified as the selling party in the NTRA filing?

The broker listed is Morgan Stanley Smith Barney LLC acting for the selling holder. The transactions reported for the past three months were executed under 10b5-1 plans by Matthew Rabinowitz on specified dates.

How many shares were sold recently according to the filing?

The filing reports two recent 10b5-1 sales totaling 125,000 Common shares: 75,000 on 03/13/2026 and 50,000 on 03/16/2026, with listed dollar amounts for each transaction in the excerpt.

Does the Form 144 show sale proceeds for the transactions?

Yes. The excerpt shows an aggregate amount of $21,923,000 associated with the 100,000-share notice and lists proceeds of $14,175,382.50 and $9,813,885.00 for the 03/13/2026 and 03/16/2026 sales, respectively.

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

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Accepted by SEC EDGAR 06/12/2026 - 04:42 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	100000	21923000.00	143215382	06/12/2026	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	11/11/2024	Previously Exercised Stock Options	Issuer			100000	11/11/2024	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	03/16/2026	50000	9813885.00
10b5-1 Sales for MATTHEW RABINOWITZ 13011 McCallen Pass, Bldg A Suite 100 Austin TX 78753	Common	03/13/2026	75000	14175382.50

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the exercise of stock options from 11/11/2024 through 4/6/2026 .
Date of Notice	06/12/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/13/2026
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)