Sangamo (SGMO) executive shares withheld to cover RSU tax obligations

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Sangamo Therapeutics executive Gregory D. Davis, Head of Research & Technology, had 1,630 shares of Common Stock surrendered to the company on May 25, 2026 for mandatory tax withholding tied to a restricted stock unit (RSU) vesting. The withholding used the issuer’s closing stock price of $0.1743 per share and is classified as a disposition to the issuer for reporting purposes, not an open-market trade. After this tax-withholding transaction, Davis directly holds 113,654 shares. The footnotes state this includes 3,031 shares from the May 25, 2026 vesting installment of a February 25, 2025 RSU grant, with an additional 32,633 RSU shares scheduled to vest in seven equal quarterly installments, subject to continued service under the 2018 equity incentive plan.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Davis Gregory D

Role Head of Research & Technology

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	1,630	$0.1743	$284.11

Holdings After Transaction: Common Stock — 113,654 shares (Direct, null)

Footnotes (1)

Represents shares underlying the portion of an RSU grant that vested on May 25, 2026, which were surrendered by the Reporting Person solely for mandatory tax withholding purposes using the Issuer's closing stock price on May 25, 2026 of $0.1743/share, pursuant to the terms of the 2018 EIP. This required tax withholding transaction is deemed to constitute a disposition of these shares to the Issuer for reporting purposes and does not represent a discretionary trade by the Reporting Person in the open market or otherwise. Includes: 3,031 shares from the May 25, 2026 vesting installment of the Reporting Person's February 25, 2025 RSU grant and the remaining 32,633 shares will vest in 7 successive equal quarterly installments thereafter. The vesting of all such RSU grants is subject to the Reporting Person's Continuous Service (as defined in the 2018 EIP) through each such date and subject to acceleration as provided in the 2018 EIP.

Key Figures

Shares withheld for taxes: 1,630 shares Price used for withholding: $0.1743 per share Shares held after transaction: 113,654 shares +2 more

5 metrics

Shares withheld for taxes 1,630 shares Mandatory tax withholding on RSU vesting at $0.1743/share on May 25, 2026

Price used for withholding $0.1743 per share Issuer’s closing stock price on May 25, 2026

Shares held after transaction 113,654 shares Direct common stock holdings of Gregory D. Davis after withholding

Recently vested RSU shares 3,031 shares May 25, 2026 vesting installment of February 25, 2025 RSU grant

Unvested RSU shares remaining 32,633 shares To vest in 7 successive equal quarterly installments, subject to continuous service

Key Terms

RSU, mandatory tax withholding, 2018 EIP, Continuous Service, +1 more

5 terms

RSU financial

"Represents shares underlying the portion of an RSU grant that vested on May 25, 2026"

Restricted stock units (RSUs) are a form of company shares given to employees as part of their compensation, usually with certain restrictions or conditions, such as remaining with the company for a set period. When these restrictions lift, employees receive actual shares that they can sell or hold. For investors, RSUs can impact a company's stock supply and reflect the company's commitment to attracting and retaining talent.

mandatory tax withholding financial

"surrendered by the Reporting Person solely for mandatory tax withholding purposes"

2018 EIP financial

"pursuant to the terms of the 2018 EIP"

Continuous Service financial

"subject to the Reporting Person's Continuous Service (as defined in the 2018 EIP)"

disposition of these shares to the Issuer financial

"transaction is deemed to constitute a disposition of these shares to the Issuer"

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google

Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 05/27/2026 - 07:30 PM Accepted by SEC EDGAR 05/27/2026 - 07:30 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Davis Gregory D

(Last)

(First)

(Middle)

C/O SANGAMO THERAPEUTICS, INC.

501 CANAL BLVD.

(Street)

RICHMOND

CALIFORNIA

94804

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SANGAMO THERAPEUTICS, INC [ SGMO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Head of Research & Technology

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/25/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/25/2026		F		1,630⁽¹⁾	D	$0.1743	113,654⁽²⁾	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Represents shares underlying the portion of an RSU grant that vested on May 25, 2026, which were surrendered by the Reporting Person solely for mandatory tax withholding purposes using the Issuer's closing stock price on May 25, 2026 of $0.1743/share, pursuant to the terms of the 2018 EIP. This required tax withholding transaction is deemed to constitute a disposition of these shares to the Issuer for reporting purposes and does not represent a discretionary trade by the Reporting Person in the open market or otherwise.

2. Includes: 3,031 shares from the May 25, 2026 vesting installment of the Reporting Person's February 25, 2025 RSU grant and the remaining 32,633 shares will vest in 7 successive equal quarterly installments thereafter. The vesting of all such RSU grants is subject to the Reporting Person's Continuous Service (as defined in the 2018 EIP) through each such date and subject to acceleration as provided in the 2018 EIP.

	/s/ Scott Willoughby, Attorney-in-Fact	05/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Sangamo (SGMO) report for Gregory D. Davis?

Sangamo reported that executive Gregory D. Davis had 1,630 shares withheld to cover taxes on an RSU vesting. These shares were surrendered to the issuer, not sold in the open market, and are treated as a disposition for reporting purposes.

Was the Sangamo (SGMO) insider transaction an open-market sale?

No, the transaction was not an open-market sale. The 1,630 shares were surrendered solely for mandatory tax withholding at $0.1743 per share, in connection with an RSU vesting, and are reported as a disposition back to the issuer.

How many Sangamo (SGMO) shares does Gregory D. Davis hold after the filing?

Following the tax-withholding disposition, Gregory D. Davis directly holds 113,654 shares of Sangamo common stock. This figure reflects his remaining position after 1,630 shares were surrendered to the issuer to satisfy tax obligations on vested RSUs.

What RSU vesting details are disclosed for Sangamo (SGMO) executive Gregory D. Davis?

The filing notes 3,031 shares from a February 25, 2025 RSU grant vested on May 25, 2026. The remaining 32,633 shares from that grant are scheduled to vest in seven equal quarterly installments, subject to Davis’s continuous service under the 2018 equity incentive plan.

At what price were Sangamo (SGMO) shares valued for the tax withholding?

The mandatory tax withholding used Sangamo’s closing stock price of $0.1743 per share on May 25, 2026. That price determined how many shares, 1,630 in total, were surrendered by Gregory D. Davis to satisfy the related tax obligations on the RSU vesting.