Stocks · Health care · Biological Products, (No Diagnostic Substances)

Twist Bioscience Corp

TWST Clue Score57

United States Fiscal year ends September CIK 0001581280 Results filed 3 Aug 2026

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What the insiders did Net selling

By person

25 insiders · 1,064 transactions

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Emily M. Leproust

Chief Executive Officer

—

$174.94M (263) scheduled

−$174.94M

558,187

0.8901%

$75.58M

−22.5%

William Banyai

See Remark

—

$40.78M (173)

−$40.78M

345,188

0.5505%

$46.74M

−51.3%

Patrick John Finn

President and COO

—

$39.64M (105) scheduled

−$39.64M

180,278

0.2875%

$24.41M

+3,741%

Patrick Weiss

Chief Operating Officer

—

$19.28M (117) scheduled

−$19.28M

47,401

0.0756%

$6.42M

−18.7%

James M Thorburn

Chief Financial Officer

—

$18.06M (62) scheduled

−$18.06M

86,334

0.1377%

$11.69M

+1,849%

Mark Daniels

See Remarks

—

$14.35M (50) scheduled

−$14.35M

66,736

0.1064%

$9.04M

+175.6%

Paula Green

SVP of Human Resources

—

$14.29M (70)

−$14.29M

105,625

0.1684%

$14.30M

+1,460%

Keith Crandell

Director

$1.05M (2)

$12.57M (5)

−$11.52M

103,618

0.1652%

$14.03M

—

Dennis Cho

See Remarks

$132.00K (1)

$9.93M (65) scheduled

−$9.80M

62,840

0.1002%

$8.51M

+218.7%

Robert Chess

Director

—

$6.07M (23) scheduled

−$6.07M

21,084

0.0336%

$2.85M

−22.8%

Adam Laponis

Chief Financial Officer

—

$5.36M (28)

−$5.36M

98,114

0.1565%

$13.28M

+5,058%

Jan Johannessen

Director

—

$2.81M (9) scheduled

−$2.81M

17,754

0.0283%

$2.40M

—

Robert F. Werner

Chief Accounting Officer

—

$2.08M (45)

−$2.08M

42,769

0.0682%

$5.79M

—

Bill Peck

Chief Technology Officer

—

$1.63M (8)

−$1.63M

646,112

1.03%

$87.48M

−8.8%

Robert P Ragusa

Director

—

$1.41M (3) scheduled

−$1.41M

1,731,084

2.76%

$234.39M

—

ARCH Venture Partners VIII, LLC entity

10% owner

$1.05M (2)

—

+$1.05M

954,146

1.52%

$129.19M

—

Nicolas Barthelemy

Director

$250.10K (1)

$888.03K (1) scheduled

−$637.94K

23,021

0.0367%

$3.12M

—

Melissa A. Starovasnik

Director

—

$328.26K (5) scheduled

−$328.26K

22,222

0.0354%

$3.01M

—

Katryn Blake

Director

—

$275.25K (1)

−$275.25K

17,208

0.0274%

$2.33M

—

Ever Alpha Fund L.P. entity

10% owner

—

—

—

3,294,961

5.25%

$446.14M

—

Fred B Craves

Director

—

—

—

66,771

0.1065%

$9.04M

—

Nelson Chan

Director

—

—

—

33,251

0.0530%

$4.50M

—

Xiaoying Mai

Director

—

—

—

31,057

0.0495%

$4.21M

—

Martin Kunz

SVP, Operations

—

—

—

20,346

0.0324%

$2.75M

—

Kevin Bruce Yankton

Chief Accounting Officer

—

—

—

9,115

0.0145%

$1.23M

+971.1%