Alfred Sandrock

BIIB

Alfred Sandrock serves as director, officer: President and CEO at Biogen Inc. (BIIB). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

5 trades

$3.56M

Net Position

Net Seller

$3.56M

Companies Traded

VYGR, BIIB

Active Period

Jun 2021 – Feb 2026

5 total trades

Most Recent

Sell VYGR

Feb 26, 2026 · $53.8K

Alfred Sandrock's Insider Trading at Biogen Inc. (BIIB)

Buys

0 · $0.00

Sells

1 · $3.38M

Total Shares Bought

Total Shares Sold

7,672

BIIB Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Jun 7, 2021↗	Sell	7,672	$440.00	$3.38M	0

Alfred Sandrock's Insider Trading at Voyager Therapeutics, Inc. (VYGR)

Buys

0 · $0.00

Sells

4 · $179.9K

Total Shares Bought

Total Shares Sold

49,853

VYGR Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Feb 26, 2026↗	Sell	14,197	$3.79	$53.8K	484,060
Feb 20, 2026↗	Sell	11,732	$3.41	$40.0K	498,257
Feb 18, 2026↗	Sell	11,732	$3.41	$40.0K	0
Feb 11, 2026↗	Sell	12,192	$3.78	$46.1K	509,989