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Who

Dennis Cho

Officer

Company insider

Files Form 4 as: Officer, Twist Bioscience.

Every Form 4 they filed

In numbers

Trades disclosed
118
Buys
1
Sells
65
Bought
$132K
Sold
$16.6M
Companies
1
Companies where not an officer
0
First trade
13 Sep 2021
Last trade
2 Oct 2026
Last filed
5 Oct 2026

Companies traded

Where they are an officer
TWST Twist BioscienceOfficer · Genomics & Gene Editing · last 2 Oct 20261 buy · 65 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
40Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
2 Oct 2026filed 5 Oct 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$1.8M9,514 at $188.88filing
21 Sep 2026filed 23 Sep 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$58K348 at $165.49filing
21 Sep 2026filed 23 Sep 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$58K348 at $165.49filing
8 Sep 2026filed 10 Sep 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$51K412 at $122.62filing
8 Sep 2026filed 10 Sep 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$51K412 at $122.62filing
21 Aug 2026filed 25 Aug 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$222K1,598 at $139.07filing
21 Aug 2026filed 25 Aug 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$222K1,598 at $139.07filing
19 Aug 2026filed 21 Aug 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$1.8M14,205 at $129.75filing
19 Aug 2026filed 21 Aug 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$1.8M14,205 at $129.75filing
5 Aug 2026filed 7 Aug 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$1.6M14,205 at $109.75filing
5 Aug 2026filed 7 Aug 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$1.6M14,205 at $109.75filing
3 Aug 2026filed 5 Aug 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$91K1,070 at $85.32filing
3 Aug 2026filed 5 Aug 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$91K1,070 at $85.32filing
24 Jun 2026filed 26 Jun 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$1.3M14,205 at $89.75filing
24 Jun 2026filed 26 Jun 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$1.3M14,205 at $89.75filing
22 Jun 2026filed 24 Jun 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$30K346 at $87.32filing
22 Jun 2026filed 24 Jun 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$30K346 at $87.32filing
8 Jun 2026filed 10 Jun 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$28K402 at $69.84filing
8 Jun 2026filed 10 Jun 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$28K402 at $69.84filing
29 May 2026filed 2 Jun 2026TWST Twist BioscienceGenomics & Gene EditingSEC FORM 4 Sold$991K14,205 at $69.75filing

Sectors

Health Care66

Buys in green, sells in red, by the company’s sector.

Related people

Adam LaponisChief Financial Officer · Chief Financial Officer at Twist Bioscience, filing Form 4 there in the last year
Emily M. LeproustChief Executive Officer · Chief Executive Officer at Twist Bioscience, filing Form 4 there in the last year
Robert F. WernerChief Accounting Officer · Chief Accounting Officer at Twist Bioscience, filing Form 4 there in the last year
Patrick John FinnPresident and COO · President and COO at Twist Bioscience, filing Form 4 there in the last year
Paula GreenSVP of Human Resources · SVP of Human Resources at Twist Bioscience, filing Form 4 there in the last year
Katryn BlakeDirector · Also traded TWST in the last 90 days
Robert ChessDirector · Also traded TWST in the last 90 days