Dennis Cho Biography and Net Worth

Chief Legal Officer and Corporate Secretary of Twist Bioscience


Dennis Cho is a seasoned in-house business attorney with a proven track record of agile strategic guidance and practical problem solving. Prior to Twist, he served as assistant general counsel at CytomX Therapeutics, where he was department head for all deals and contracts as well as day-to-day lead on compliance and numerous other legal subject matters. Prior to CytomX, Mr. Cho was the lead transactional attorney on antibody-related licenses and collaborations, major commercial agreements, and combination trials at Seattle Genetics. Before that, he spent nine years at Celgene as the lead West Coast attorney supervising over 100 business transactions, including in- and out- licenses, options, collaborations and M&A agreements, and held primary legal responsibility for Celgene’s alliances, equity investments and “big data” machine learning initiative. Prior to Celgene, Mr. Cho served as general counsel for four private and public companies. He earned his J.D. and a B.A. in Molecular Cell Biology (Genetics) from University of California, Berkeley.

What is Dennis Cho's net worth?

The estimated net worth of Dennis Cho is at least $3.96 million as of November 3rd, 2025. Mr. Cho owns 120,694 shares of Twist Bioscience stock worth more than $3,959,970 as of December 5th. This net worth approximation does not reflect any other assets that Mr. Cho may own. Additionally, Mr. Cho receives an annual salary of $537,930.00 as Chief Legal Officer and Corporate Secretary at Twist Bioscience. Learn More about Dennis Cho's net worth.

How old is Dennis Cho?

Mr. Cho is currently 53 years old. There are 6 older executives and no younger executives at Twist Bioscience. The oldest executive at Twist Bioscience is Dr. William Charles Banyai Ph.D., Senior VP of Advanced Development, GM of Data Storage & Director, who is 69 years old. Learn More on Dennis Cho's age.

What is Dennis Cho's salary?

As the Chief Legal Officer and Corporate Secretary of Twist Bioscience Corporation, Mr. Cho earns $537,930.00 per year. There are 4 executives that earn more than Mr. Cho. The highest earning executive at Twist Bioscience is Dr. Emily Marine Leproust Ph.D., Co-Founder, Chairman & CEO, who commands a salary of $1,370,000.00 per year. Learn More on Dennis Cho's salary.

How do I contact Dennis Cho?

The corporate mailing address for Mr. Cho and other Twist Bioscience executives is 681 GATEWAY BLVD., SOUTH SAN FRANCISCO CA, 94080. Twist Bioscience can also be reached via phone at (800) 719-0671 and via email at [email protected]. Learn More on Dennis Cho's contact information.

Has Dennis Cho been buying or selling shares of Twist Bioscience?

During the last quarter, Dennis Cho has sold $362,289.56 of Twist Bioscience stock. Most recently, Dennis Cho sold 1,019 shares of the business's stock in a transaction on Monday, November 3rd. The shares were sold at an average price of $32.08, for a transaction totalling $32,689.52. Following the completion of the sale, the insider now directly owns 120,694 shares of the company's stock, valued at $3,871,863.52. Learn More on Dennis Cho's trading history.

Who are Twist Bioscience's active insiders?

Twist Bioscience's insider roster includes William Banyai (Insider), Robert Chess (Director), Dennis Cho (Chief Legal Officer and Corporate Secretary), Keith Crandell (Director), Mark Daniels (Insider), Patrick Finn (Insider), Paula Green (SVP), Jan Johannessen (Director), Adam Laponis (CFO), Emily Leproust (CEO), James Thorburn (CFO), Patrick Weiss (COO), and Robert Werner (CAO). Learn More on Twist Bioscience's active insiders.

Are insiders buying or selling shares of Twist Bioscience?

In the last year, insiders at the sold shares 77 times. They sold a total of 192,145 shares worth more than $6,870,513.10. The most recent insider tranaction occured on November, 3rd when insider Dennis Cho sold 1,019 shares worth more than $32,689.52. Insiders at Twist Bioscience own 3.0% of the company. Learn More about insider trades at Twist Bioscience.

Information on this page was last updated on 11/3/2025.

Dennis Cho Insider Trading History at Twist Bioscience

Transaction DateBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
11/3/2025Sell1,019$32.08$32,689.52120,694View SEC Filing Icon  
10/30/2025Sell6,515$31.44$204,831.60121,713View SEC Filing Icon  
10/6/2025Sell3,876$32.19$124,768.4498,710View SEC Filing Icon  
9/22/2025Sell233$27.56$6,421.48102,710View SEC Filing Icon  
9/15/2025Sell94$25.33$2,381.02102,943View SEC Filing Icon  
9/8/2025Sell269$25.76$6,929.44103,037View SEC Filing Icon  
7/2/2025Sell125$36.19$4,523.75104,612View SEC Filing Icon  
6/20/2025Sell230$35.76$8,224.80104,737View SEC Filing Icon  
5/21/2025Sell531$29.75$15,797.25105,318View SEC Filing Icon  
5/5/2025Sell689$37.65$25,940.85110,849View SEC Filing Icon  
4/2/2025Sell124$38.73$4,802.52111,538View SEC Filing Icon  
3/20/2025Sell230$41.68$9,586.40111,662View SEC Filing Icon  
3/14/2025Sell92$40.05$3,684.60111,892View SEC Filing Icon  
3/6/2025Sell277$40.91$11,332.07111,984View SEC Filing Icon  
2/3/2025Sell806$49.35$39,776.10112,221View SEC Filing Icon  
1/3/2025Sell144$45.59$6,564.96113,027View SEC Filing Icon  
12/20/2024Sell316$44.90$14,188.40113,171View SEC Filing Icon  
12/16/2024Sell133$46.81$6,225.73113,487View SEC Filing Icon  
12/6/2024Sell367$52.70$19,340.90113,620View SEC Filing Icon  
11/11/2024Sell1,507$48.00$72,336.0091,163View SEC Filing Icon  
11/4/2024Sell659$41.56$27,388.0494,481View SEC Filing Icon  
10/2/2024Sell3,104$43.21$134,123.8475,289View SEC Filing Icon  
9/20/2024Sell234$46.94$10,983.9678,393View SEC Filing Icon  
8/5/2024Sell709$39.93$28,310.3778,996View SEC Filing Icon  
7/2/2024Sell126$48.00$6,048.0079,705View SEC Filing Icon  
6/20/2024Sell234$49.41$11,561.9479,831View SEC Filing Icon  
6/14/2024Sell95$51.04$4,848.8080,065View SEC Filing Icon  
6/6/2024Sell276$51.33$14,167.0880,160View SEC Filing Icon  
3/20/2024Sell230$33.52$7,709.6081,133View SEC Filing Icon  
3/14/2024Sell93$34.60$3,217.8081,363View SEC Filing Icon  
3/6/2024Sell272$37.43$10,180.9681,456View SEC Filing Icon  
5/10/2023Buy10,000$13.20$132,000.0029,297View SEC Filing Icon  
See Full Table

Dennis Cho Buying and Selling Activity at Twist Bioscience

This chart shows Dennis Cho's buying and selling at Twist Bioscience by year and by quarter.

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Twist Bioscience Company Overview

Twist Bioscience logo
Twist Bioscience Corporation engages in the manufacture and sale of synthetic DNA-based products. The company offers synthetic genes and gene fragments used in product development for therapeutics, diagnostics, chemicals/materials, food/agriculture, data storage, and various applications within academic research by biotech, pharma, industrial chemical, and agricultural companies, as well as academic labs; Oligo pools used in targeted NGS, CRISPR gene editing, mutagenesis experiments, DNA origami, DNA computing, data storage in DNA, and other applications; and immunoglobulin G proteins for customers focused on the pursuit of drug discovery and development. It also provides NGS tools comprising library preparation kits, human exome kits, and fixed and custom panels, as well as alliance panels, primarily used within diagnostic tests for various indications, population genetics research and biomarker discovery, translational research, microbiology, and applied markets research; and methylation detection kits for cancer, and rare and inherited disease study, as well as fast hybridization and full RNA sequencing workflow solution. In addition, the company provides synthetic SARS-CoV-2 RNA reference sequences as positive controls for the development of both NGS and reverse transcription-polymerase chain reaction assays; synthetic monkeypox controls; and various respiratory viral controls, including for influenzas, respiratory syncytial virus, rhinoviruses, SARS, MERS, and coronaviruses. Further, it offers SARS-CoV-2 Research Panels, such as the Twist Respiratory Virus Panel and the Pan-Viral Research Panel, for the detection of disease in a research setting; precision DNA libraries used for antibody engineering, affinity maturation, and humanization; and antibody optimization solution to enable simultaneous optimization of multiple characteristics of a given antibody. The company was incorporated in 2013 and is headquartered in South San Francisco, California.
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Today's Range

Now: $32.81
Low: $30.42
High: $33.21

50 Day Range

MA: $30.55
Low: $25.45
High: $34.18

2 Week Range

Now: $32.81
Low: $23.30
High: $55.33

Volume

1,186,214 shs

Average Volume

1,779,870 shs

Market Capitalization

$2.01 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

2.24