DUBOIS-STRINGFELLOW NATHALIE

PrivateCIK: 1947007
Location

BRISBANE, CA

Senior insider sale

SVP-CHIEF DEVELOPMENT OFFICER at SANGAMO THERAPEUTICS, INC — senior position signals high conviction

$176.7K

588.71K shares

What this filing means

DUBOIS-STRINGFELLOW NATHALIE plans to sell 588.71K shares of SANGAMO THERAPEUTICS, INC valued at approximately $176.7K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.

IssuerSANGAMO THERAPEUTICS, INCCIK 1001233
Officer· SVP-CHIEF DEVELOPMENT OFFICER
Since Feb 2026
588.71K
Shares to sell
$176.7K
Approx. market value
588.71K
Acquired (3 months)
1
Planned
Securities Acquired — Last 3 Months18
Sort

Restricted Stock Units

Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.

2/25/2026
17.65K

Restricted Stock Units

Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.

2/24/2026
32.62K

Restricted Stock Units

Vested grant settled instock; consideration was Reporting Person's continued service as an employee ofthe Issuer.

1/22/2026
438.76K

ESPP Purchase

Cash

11/28/2025
5K

ESPP Purchase

Cash

5/30/2025
5K

Restricted Stock Units

Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.

2/25/2025
29.05K

ESPP Purchase

Cash

11/29/2024
5K

ESPP Purchase

Cash

5/31/2024
5K

Restricted Stock Units

Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.

2/25/2024
15.19K

ESPP Purchase

Cash

11/30/2023
5K

ESPP Purchase

Cash

5/31/2023
5K

Restricted Stock Units

Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.

2/25/2023
17.99K

ESPP Purchase

Cash

5/31/2022
3.12K

Restricted Stock Units

Vested grant settled in stock; consideration was Reporting Person's continued service as an employee of the Issuer.

2/25/2022
1.09K

ESPP Purchase

Cash

10/29/2021
322.00

ESPP Purchase

Cash

5/28/2021
474.00

ESPP Purchase

Cash

4/30/2021
1.80K

ESPP Purchase

Cash

10/30/2020
645.00
Total acquired588.71K
Planned & Completed Dispositions1
Sort
NasdaqPlanned

Units to sell

588.71K

Market value

$176.7K

4/6/2026
Total

Units

588.71K

Value

$176.7K

DUBOIS-STRINGFELLOW NATHALIE — Planned Insider Sale (Form 144) | Finecho