Twist Bioscience Corp (TWST) Insider Ownership

Historic Insider Ownership Trends

Twist Bioscience's top three insider shareholders as of March 23, 2026 are Emily M. Leproust (Chief Executive Officer, 860.63K shares), William Banyai (See Remark, 345.19K shares), Patrick John Finn (President And Coo, 284.13K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Emily M. Leproust Chief Executive Officer 860,629 0 10 Mar, 2026
William Banyai See Remark 345,188 0 07 May, 2024
Patrick John Finn President And Coo 284,129 0 25 Feb, 2026
Dennis Cho See Remarks 138,257 0 10 Mar, 2026
Adam Laponis Chief Financial Officer 128,291 0 25 Feb, 2026
Paula Green Svp Of Human Resources 124,401 0 10 Mar, 2026
Mark Daniels See Remarks 66,736 0 05 Apr, 2021
Robert F. Werner Chief Accounting Officer 54,799 0 10 Mar, 2026
Patrick Weiss Chief Operating Officer 47,401 0 01 Apr, 2022
Xiaoying Mai 31,057 0 09 Feb, 2024
Melissa A. Starovasnik 26,722 0 09 Feb, 2026
Robert Chess 21,084 0 19 Mar, 2026
Kevin Bruce Yankton Chief Accounting Officer 9,115 0 19 May, 2023

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
17 Mar, 2026 Robert Chess Common Stock A 10,000 $11.89 31,084 D M
17 Mar, 2026 Robert Chess Common Stock D 10,000 $47.00 21,084 D S
17 Mar, 2026 Robert Chess Stock Option (right to buy) D 10,000 $0.00 18,417 D M
06 Mar, 2026 Dennis Cho Common Stock D 425 $46.43 138,257 D S
06 Mar, 2026 Paula Green Common Stock D 935 $46.43 124,401 D S
06 Mar, 2026 Robert F. Werner Common Stock D 246 $46.43 54,799 D S
06 Mar, 2026 Emily M. Leproust Common Stock D 2,423 $46.43 860,629 D S
23 Feb, 2026 Paula Green Common Stock D 1,465 $46.71 125,336 D S
23 Feb, 2026 Adam Laponis Common Stock D 2,085 $46.71 128,291 D S
23 Feb, 2026 Dennis Cho Common Stock D 844 $46.71 138,682 D S
23 Feb, 2026 Robert F. Werner Common Stock D 1,693 $46.71 55,045 D S
23 Feb, 2026 Emily M. Leproust Common Stock D 7,205 $46.71 863,052 D S
23 Feb, 2026 Patrick John Finn Common Stock D 4,294 $46.71 284,129 D S
17 Feb, 2026 Paula Green Common Stock D 39,404 $52.40 126,041 D S
17 Feb, 2026 Patrick John Finn Common Stock A 18,205 $23.33 324,455 D M
17 Feb, 2026 Patrick John Finn Common Stock A 32,300 $26.66 356,755 D M
17 Feb, 2026 Patrick John Finn Common Stock D 21,858 $50.32 334,897 D S
17 Feb, 2026 Patrick John Finn Common Stock D 16,616 $51.42 318,281 D S
17 Feb, 2026 Patrick John Finn Common Stock D 26,952 $52.69 291,329 D S
17 Feb, 2026 Patrick John Finn Common Stock D 3,541 $53.11 287,788 D S