SIENNA BIOPHARMACEUTICALS, INC.

PrivateCIK: 1656328
Location

WESTLAKE VILLAGE, CA

Total Insiders

24

Active leadership & owners

Board Directors

8

Governing body

Corporate Officers

6

Executive management

10%+ Owners

11

Major shareholders

Active Insiders

24

Currently serving

Former Insiders

0

Past roles

ARCH VENTURE FUND VIII OVERAGE, L.P.
10% Owner
Position
TenureSince Feb 2019
Holdings
ARCH VENTURE FUND VIII, L.P.
10% Owner
Position
TenureSince Feb 2019
Holdings
ARCH VENTURE FUND X OVERAGE, L.P.
10% Owner
Position
TenureSince Feb 2019
Holdings
ARCH VENTURE PARTNERS VIII, L.P.
10% Owner
Position
TenureSince Feb 2019
Holdings
ARCH VENTURE PARTNERS VIII, LLC
10% Owner
Position
TenureSince Feb 2019
Holdings
ARCH VENTURE PARTNERS X OVERAGE, L.P.
10% Owner
Position
TenureSince Feb 2019
Holdings
ARCH VENTURE PARTNERS X, LLC
10% Owner
Position
TenureSince Feb 2019
Holdings
BYBEE CLINTON
10% Owner
Position
TenureSince Feb 2019
Holdings
CRANDELL KEITH
10% Owner
Position
TenureSince Feb 2019
Holdings
GILLIS STEVEN
10% Owner
Position
TenureSince Feb 2019
Holdings
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