Robert F. Werner Insider Trading Activity

Corporate InsiderChief Accounting Officer · CIK 1590947

20

Total trades

$1.0M

Total volume

May 26, 2026

Last activity

TWST

Twist Bioscience Corp

Robert F. Werner has been net-selling over the last 12 months with 0 purchases and 18 sales across 1 company.

TWST is the most-traded position with 18 trades. The largest single transaction was a sale of TWST for $320K on Feb 4, 2026.

Performance Scorecard

Forward stock performance after each transaction by Robert F. Werner. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIODAVG BUY RETURNAVG SELL AVOIDEDSUCCESS RATETRADES
30 days—-9.5%29%17
90 days—-28.6%19%16
120 days—-38.4%0%14

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

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TWST · Twist Bioscience Corp

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Recent Trades

DATETICKERTYPESHARESPRICEVALUEROLE
May 26, 2026TWSTSell800$62.48$50KChief Accounting Officer
May 21, 2026TWSTSell688$53.26$37KChief Accounting Officer
May 8, 2026TWSTSell4,961$56.88$282KChief Accounting Officer
May 4, 2026TWSTSell164$57.15$9KChief Accounting Officer
Mar 6, 2026TWSTSell246$46.43$11KChief Accounting Officer
Feb 23, 2026TWSTSell1,693$46.71$79KChief Accounting Officer
Feb 4, 2026TWSTSell7,000$45.65$320KChief Accounting Officer
Feb 3, 2026TWSTSell175$46.58$8KChief Accounting Officer
Dec 8, 2025TWSTSell230$32.88$8KChief Accounting Officer
Nov 24, 2025TWSTSell822$28.71$24KChief Accounting Officer
Nov 21, 2025TWSTSell229$26.50$6KChief Accounting Officer
Nov 3, 2025TWSTSell160$32.08$5KChief Accounting Officer
Oct 30, 2025TWSTSell1,016$31.44$32KChief Accounting Officer
Oct 6, 2025TWSTSell2,041$32.19$66KChief Accounting Officer
Sep 8, 2025TWSTSell235$25.76$6KChief Accounting Officer
Aug 25, 2025TWSTSell853$27.69$24KChief Accounting Officer
Aug 21, 2025TWSTSell238$25.96$6KChief Accounting Officer
Aug 4, 2025TWSTSell186$28.36$5KChief Accounting Officer
Jun 6, 2025TWSTSell225$31.75$7KChief Accounting Officer
May 23, 2025TWSTSell839$27.73$23KChief Accounting Officer

Top Companies Traded

TICKERCOMPANYTRADESTOTAL VOLUME
TWSTTwist Bioscience Corp20$1.0M

Other insiders at Twist Bioscience Corp

7 other tracked filers at TWST.

Leproust Emily M.

CEO

23

Trades

Finn Patrick John

COO

23

Trades

Cho Dennis

See Remarks

23

Trades

Green Paula

VP

21

Trades

Laponis Adam

CFO

15

Trades

Starovasnik Melissa A.

Director

3

Trades

Jan Johannessen

Director

3

Trades