Biogen MA Inc. insider trades: Sangamo Therapeutics (SGMO) stock sales

10% Owner, Sangamo Therapeutics Last trade Sep 26, 2023 8 Form 4 filings

Sold, last 12 months

0 sales

Bought, last 12 months

0 buys

Open-market trades

since 2021

Company

last trade 2023

Trades on the price chart

Daily close, with an arrow on each day they bought or sold

Companies

Where Biogen MA Inc. reports to the SEC

SGMOSangamo Therapeutics

10% Owner · last filing Sep 28, 2023

-$8.0M

Open-market buys and sales

8 trades reported on SEC Form 4, newest first

Date	Stock	Type	Shares	Price	Value	Holding	Reported
Sep 26, 2023	SGMOSangamo Therapeutics	↓ Sell	6,000,000	$0.50	$3.0M	By Biogen MA Inc.	Sep 28, 2023 (2d)
Aug 30, 2022	SGMOSangamo Therapeutics	↓ Sell	500,000	$5.31	$2.7M	By Biogen MA Inc.	Aug 31, 2022 (1d)
Dec 28, 2021	SGMOSangamo Therapeutics	↓ Sell	2,764	$8.51	$24K	By Biogen MA Inc.	Dec 30, 2021 (2d)
Dec 27, 2021	SGMOSangamo Therapeutics	↓ Sell	81,787	$8.55	$700K	By Biogen MA Inc.	Dec 28, 2021 (1d)
Dec 9, 2021	SGMOSangamo Therapeutics	↓ Sell	23,660	$8.56	$203K	By Biogen MA Inc.	Dec 10, 2021 (1d)
Dec 8, 2021	SGMOSangamo Therapeutics	↓ Sell	127,992	$8.59	$1.1M	By Biogen MA Inc.	Dec 9, 2021 (1d)
Dec 2, 2021	SGMOSangamo Therapeutics	↓ Sell	2,604	$8.51	$22K	By Biogen MA Inc.	Dec 3, 2021 (1d)
Nov 26, 2021	SGMOSangamo Therapeutics	↓ Sell	28,884	$8.60	$248K	By Biogen MA Inc.	Nov 30, 2021 (4d)

Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.

Other SGMO insiders

Open-market trades in the last 12 months

Gregory D Davis

Head of Research & Technology

1 sale

Apr 22, 2026

Nathalie Dubois-Stringfellow

Svp-Chief Development Officer

1 sale

Apr 21, 2026

About Biogen MA Inc.'s insider trades

Biogen MA Inc. is a 10% owner of Sangamo Therapeutics (SGMO). Since Nov 26, 2021, it has reported no open-market purchases and 8 sales worth $8.0M on SEC Form 4. There have been no open-market trades in the last 12 months.

How to read insider trades

Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every SGMO insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.