TXG insider plans sale of common shares

TXG shareholder Sarah A Polonius-Teichmann filed to sell common stock through Morgan Stanley Smith Barney LLC Executive Financial Services on NASDAQ.

Rhea-AI Filing Summary

TXG shareholder Sarah A Polonius-Teichmann filed to sell common stock through Morgan Stanley Smith Barney LLC Executive Financial Services on NASDAQ. The notice covers a proposed sale of 2,273 common shares with an approximate aggregate value of $129,901.95 as of 08/14/2026. Additional securities to be sold include restricted stock awards of 1,155 shares dated 11/21/2025 and 1,118 shares dated 02/21/2026. Over the past three months, a separate sale of 5,278 common shares for $302,376.62 on 08/13/2026 was reported.

Key Figures

Planned common shares to be sold: 2,273 shares Approximate aggregate value of planned sale: $129,901.95 Restricted stock dated 11/21/2025: 1,155 shares +3 more

6 metrics

Planned common shares to be sold 2,273 shares Common stock listed with approximate aggregate value for 08/14/2026

Approximate aggregate value of planned sale $129,901.95 Value associated with 2,273 common shares on 08/14/2026

Restricted stock dated 11/21/2025 1,155 shares Restricted stock identified as securities to be sold

Restricted stock dated 02/21/2026 1,118 shares Restricted stock identified as securities to be sold

Shares sold in past 3 months 5,278 shares Common stock sold on 08/13/2026

Proceeds from recent sale $302,376.62 Total value of 5,278 shares sold on 08/13/2026

Key Terms

Restricted Stock, Securities To Be Sold, Securities Sold During The Past 3 Months, Executive Financial Services

4 terms

Restricted Stock financial

"Common | 11/21/2025 | Restricted Stock | ISSUER"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Securities To Be Sold financial

"144: Securities To Be Sold Common | 11/21/2025"

Securities Sold During The Past 3 Months financial

"144: Securities Sold During The Past 3 Months SARAH A"

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York"

FAQ

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

What stock sale is TXG insider Sarah A Polonius-Teichmann planning?

Sarah A Polonius-Teichmann filed to potentially sell 2,273 TXG common shares through Morgan Stanley Smith Barney LLC on NASDAQ, with an indicated aggregate value of $129,901.95 as of 08/14/2026 under a Form 144 notice.

What restricted stock awards for TXG are included in the planned sales?

The filing lists two restricted stock positions: 1,155 shares dated 11/21/2025 and 1,118 shares dated 02/21/2026. These restricted stock awards are identified as securities to be sold by the issuer in the Form 144 disclosure.

What TXG stock has been sold by the insider in the last three months?

Over the past three months, Sarah A Polonius-Teichmann reported selling 5,278 TXG common shares on 08/13/2026 for total proceeds of $302,376.62, as shown in the "Securities Sold During The Past 3 Months" section.

Which broker is handling the TXG insider’s planned stock sale?

The planned sale is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services at 1 New York Plaza, 8th Floor, New York, NY 10004, which is listed as the broker handling the TXG common stock transaction.

On which market is the TXG stock sale in this Form 144 expected to occur?

The common stock referenced in the Form 144 is listed for sale on NASDAQ, as specified in the securities information section. The planned transaction involves TXG common shares traded on this market.

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

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Accepted by SEC EDGAR 08/14/2026 - 04:35 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	0002030916
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	10X GENOMICS, INC.
SEC File Number	001-39035
Address of Issuer	6230 Stoneridge Mall Road Pleasanton CALIFORNIA 94588
Phone	(925) 401-7300
Name of Person for Whose Account the Securities are To Be Sold	SARAH A POLONIUS-TEICHMANN
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

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	2273	129901.95	120212296	08/14/2026	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	11/21/2025	Restricted Stock	ISSUER			1155	11/21/2025	Not Applicable
Common	02/21/2026	Restricted Stock	ISSUER			1118	02/21/2026	Not Applicable

* 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
SARAH A POLONIUS-TEICHMANN 6230 Stoneridge Mall Road Pleasanton CA 94588	Common	08/13/2026	5278	302376.62

144: Remarks and Signature

Remarks
Date of Notice	08/14/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/14/2026
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/ Sarah Amalia Polonius-Teichmann
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)