Twist Bioscience Corporation

Last updated September 27, 2026

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Organization details

Legal name: Twist Bioscience Corporation
Ownership: Public
Status: Active
Sector (GICS): Health Care
SIC code: 2836 — Biological Products, (No Diagnostic Substances)
Jurisdiction of incorporation: Delaware
Headquarters city: South SAN Francisco
Headquarters state / province: California
Headquarters country: United States
Fiscal year end: September
Ticker symbol: TWST
Primary stock exchange: Nasdaq

Identifiers

SEC CIK: 0001581280
EIN: 46-2058888

Board of directors

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Emily M. Leproust · Director · Chief Executive Officer
Since 2023
Jan Johannessen · Director
Since 2023
Katryn Blake · Director
Since 2025
Keith Crandell · Director
Since 2023
Melissa A. Starovasnik · Director
Since 2023
Nelson C. Chan · Director
Since 2023
Robert Chess · Director
Since 2023
Robert P. Ragusa · Director
Since 2023
William Banyai · Director · See Remarks
Since 2023
Xiaoying Mai · Director
Since 2023

Chief executives

Emily M. Leproust · Chief Executive Officer

Dates unknown

Director election results

Annual meeting of February 5, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Keith Crandell

80.5%
Jan Johannessen

84.1%

Board connections

6 of this board's directors also sit on 11 other boards. 4 are in the same sector.

Shared director Other board Same sector

908 Devices Inc.
via Keith Crandell
Alamar Biosciences Inc.
via Robert P. Ragusa
Deckers Outdoor Corporation
via Nelson C. Chan
GCT Semiconductor Holding Inc.
via Nelson C. Chan
GRAIL Inc. Same sector
via Robert P. Ragusa
GeneDx Holdings Corp. Same sector
via Emily M. Leproust
Kardigan Inc. Same sector
via Keith Crandell
Nektar Therapeutics Same sector
via Robert Chess
Quanterix Corporation
via Keith Crandell
Synaptics Incorporated
via Nelson C. Chan
TripAdvisor Inc.
via Katryn Blake

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $0; 0 purchases by 0 insiders
Sold, last 12 months: $148,134,149; 180 sales by 10 insiders

Date	Insider	Transaction	Shares	Price	Value
Nov 3, 2026	Cho Dennis Officer (See Remarks)	Open-market sale	−949	$135.40	$128,497
Nov 3, 2026	Finn Patrick John Officer (President and COO)	Open-market sale	−2,565	$135.40	$347,306
Nov 3, 2026	Green Paula Officer (SVP of Human Resources)	Open-market sale	−1,007	$135.40	$136,350
Nov 3, 2026	Emily M. Leproust Director, Officer (Chief Executive Officer)	Open-market sale	−4,573	$135.40	$619,193
Nov 3, 2026	WERNER ROBERT F. Officer (Chief Accounting Officer)	Open-market sale	−148	$135.40	$20,040
Oct 23, 2026	Finn Patrick John Officer (President and COO)	Open-market sale	−2,245	$134.59	$302,152
Oct 9, 2026	Laponis Adam Officer (Chief Financial Officer)	Open-market sale	−2,462	$156.30	$384,823
Oct 5, 2026	Emily M. Leproust Director, Officer (Chief Executive Officer)	Open-market sale	−1,840	$200.44	$368,806
Oct 5, 2026	Emily M. Leproust Director, Officer (Chief Executive Officer)	Open-market sale	−481	$201.26	$96,804
Oct 5, 2026	Emily M. Leproust Director, Officer (Chief Executive Officer)	Open-market sale	−1,017	$202.32	$205,763
Oct 5, 2026	Emily M. Leproust Director, Officer (Chief Executive Officer)	Open-market sale	−432	$203.61	$87,958
Oct 5, 2026	Emily M. Leproust Director, Officer (Chief Executive Officer)	Open-market sale	−290	$204.80	$59,392
Oct 5, 2026	Emily M. Leproust Director, Officer (Chief Executive Officer)	Open-market sale	−297	$205.78	$61,116
Oct 5, 2026	Emily M. Leproust Director, Officer (Chief Executive Officer)	Open-market sale	−146	$206.84	$30,199
Oct 5, 2026	Emily M. Leproust Director, Officer (Chief Executive Officer)	Open-market sale	−45	$207.46	$9,336

Peers

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Questions about Twist Bioscience Corporation

Who is the CEO of Twist Bioscience Corporation?

Emily M. Leproust is Twist Bioscience Corporation's Chief Executive Officer.

How many directors are on Twist Bioscience Corporation's board?

Twist Bioscience Corporation's board has 10 directors: Emily M. Leproust, Jan Johannessen, Katryn Blake, Keith Crandell, Melissa A. Starovasnik, Nelson C. Chan, Robert Chess, Robert P. Ragusa, William Banyai and Xiaoying Mai.

Are Twist Bioscience Corporation insiders buying or selling shares?

Over the last 12 months, Twist Bioscience Corporation insiders made no open-market purchases and sold $148.1 million of shares in 180 sales on the open market, as reported to the SEC on Forms 4 and 5.

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