CHESS ROBERT

PrivateCIK: 1227886
Location

SOUTH SAN FRANCISCO, CA

CHESS ROBERT sold 46.6% of their position (18.42K shares) of TWIST BIOSCIENCE CORP on the open market

Open‑market sale worth $2.04M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderCHESS ROBERTCIK 1227886
IssuerTWIST BIOSCIENCE CORPCIK 1581280
Director
Since Oct 2018
-18.42K
Net shares
Net seller
$2.04M
Total sold
1
Open market trades
0B · 1S
3
Total transactions
18.42K acquired · 36.83K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+18.42K

Price / share

$11.89

Trade value

$218.98K

% of position

87.4%
8/7/2026
21.08K39.50K

Common Stock

Direct
S · Sale

Shares

18.42K

Price / share

$110.89

Trade value

$2.04M

% of position

46.6%
8/7/2026
39.50K21.08K
Total

Net shares

+0.00

Net value

-$1.82M

Derivative Transactions1

Stock Option (right to buy)

Direct
M · Option Exercise
Converts to

Common Stock

18.42K shares

Shares

18.42K

Strike price

11.89

Held after

0.00

Exercisable

8/7/2026
Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect
Shares owned42.53K
Total
42.53K indirect42.53K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported