Form 144: Proposed sale of SGMO common stock

Filer submitted a Form 144 notifying a proposed sale of Common Stock.

Accepted by SEC EDGAR 04/06/2026 - 07:08 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Filer submitted a Form 144 notifying a proposed sale of Common Stock. The notice lists securities held through E*TRADE from Morgan Stanley and documents multiple past acquisitions via ESPP purchases and vested restricted stock units. Examples include a 438,758 shares lot vested on 01/22/2026 and other grants on 02/25/2025 and 02/24/2026.

Key Figures

Broker reference: E*TRADE from Morgan Stanley Example vested lot: 438,758 shares Vested lot: 32,620 shares +3 more

6 metrics

Broker reference E*TRADE from Morgan Stanley broker listed on the Form 144

Example vested lot 438,758 shares vested grant settled in stock on 01/22/2026

Vested lot 32,620 shares vested grant settled in stock on 02/24/2026

Vested lot 17,646 shares vested grant settled in stock on 02/25/2026

Vested lot 29,047 shares vested grant settled in stock on 02/25/2025

Form date 04/06/2026 date shown in filing header

Key Terms

ESPP Purchase, Restricted Stock Units, Vested grant settled in stock

3 terms

ESPP Purchase financial

"ESP P Purchase entries with dates and share counts"

Restricted Stock Units financial

"Restricted Stock Units | Issuer | Vested grant settled in stock"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Vested grant settled in stock financial

"Vested grant settled in stock; consideration was Reporting Person's continued service"

FAQ

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

What does the Form 144 filing for SGMO mean?

It notifies regulators of a proposed sale of SGMO common stock by a holder. The filing lists past ESPP purchases and vested RSU grants, documenting share lots and acquisition dates that the reporting person intends to offer for sale.

How many shares are shown in the SGMO Form 144 examples?

The filing lists multiple share lots, including an example of 438,758 shares vested on 01/22/2026. Other listed vested grants include 29,047, 32,620, and 17,646 shares on earlier dates.

Who is acting as the broker for the proposed SGMO sale?

The filing shows the broker as E*TRADE from Morgan Stanley. The notice includes a brokerage reference and a Nasdaq listing designation for the common stock, indicating the intended sale channel.

Do Form 144 filings for SGMO indicate immediate sales?

A Form 144 notifies a proposed sale but does not by itself confirm execution. It documents the holder's intent and the acquisition history; actual sales are separate events and may be reported later in trade filings.

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	0001947007
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	SANGAMO THERAPEUTICS, INC
SEC File Number	000-30171
Address of Issuer	501 CANAL BLVD. RICHMOND CALIFORNIA 94084
Phone	510-970-6000
Name of Person for Whose Account the Securities are To Be Sold	Nathalie Dubois-Stringfellow
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 Stock	E*TRADE from Morgan Stanley PO Box 484 Jersey City NJ 07303-0484	588711	176672.17	414274017	04/06/2026	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 Stock	10/30/2020	ESPP Purchase	Issuer			645	10/30/2020	Cash
Common Stock	04/30/2021	ESPP Purchase	Issuer			1802	04/30/2021	Cash
Common Stock	05/28/2021	ESPP Purchase	Issuer			474	05/28/2021	Cash
Common Stock	10/29/2021	ESPP Purchase	Issuer			322	10/29/2021	Cash
Common Stock	02/25/2022	Restricted Stock Units	Issuer			1091	02/25/2022	Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.
Common Stock	05/31/2022	ESPP Purchase	Issuer			3122	05/31/2022	Cash
Common Stock	02/25/2023	Restricted Stock Units	Issuer			17992	02/25/2023	Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.
Common Stock	05/31/2023	ESPP Purchase	Issuer			5000	05/31/2023	Cash
Common Stock	11/30/2023	ESPP Purchase	Issuer			5000	11/30/2023	Cash
Common Stock	02/25/2024	Restricted Stock Units	Issuer			15192	02/25/2024	Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.
Common Stock	05/31/2024	ESPP Purchase	Issuer			5000	05/31/2024	Cash
Common Stock	11/29/2024	ESPP Purchase	Issuer			5000	11/29/2024	Cash
Common Stock	02/25/2025	Restricted Stock Units	Issuer			29047	02/25/2025	Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.
Common Stock	05/30/2025	ESPP Purchase	Issuer			5000	05/30/2025	Cash
Common Stock	11/28/2025	ESPP Purchase	Issuer			5000	11/28/2025	Cash
Common Stock	01/22/2026	Restricted Stock Units	Issuer			438758	01/22/2026	Vested grant settled instock; consideration was Reporting Person's continued service as an employee ofthe Issuer.
Common Stock	02/24/2026	Restricted Stock Units	Issuer			32620	02/24/2026	Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.
Common Stock	02/25/2026	Restricted Stock Units	Issuer			17646	02/25/2026	Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.

* 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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	04/06/2026
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/ Nathalie Dubois-Stringfellow
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)