Insider Transactions Reported by 19 Insiders of Twist Bioscience Corp

Symbol
TWST on Nasdaq
Location
South San Francisco, CA

Insiders trading volume in the past year

Twist Bioscience Corp executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Emily M. Leproust Chief Executive Officer, Director $39,955,561 -$3,893,022 -8.9% 06 Mar 2026
Patrick John Finn President and COO $13,271,608 -$7,842,766 -37% 23 Feb 2026
William Banyai Senior Vice President of Advanced Development and General Manager of Data Storage $12,818,211 03 May 2024
Dennis Cho Senior Vice President, Chief Legal Officer & Corporate Secretary $6,418,719 -$1,065,552 -14% 06 Mar 2026
Adam Laponis Chief Financial Officer $5,992,446 -$1,460,319 -20% 23 Feb 2026
Paula Green SVP of Human Resources $5,775,440 -$3,059,017 -35% 06 Mar 2026
Keith Crandell Director $3,558,241 05 Feb 2026
James M. Thorburn Chief Financial Officer $3,000,970 02 Jan 2024
Robert Chess Director $2,843,686 -$105,402 -3.6% 13 Feb 2026
Robert F. Werner Chief Accounting Officer $2,544,098 -$643,026 -20% 06 Mar 2026
Patrick Weiss Chief Operating Officer $1,647,659 01 Apr 2022
Nelson Chan Director $1,141,839 05 Feb 2026
Xiaoying Mai Director $1,086,498 06 Feb 2024
Robert P. Ragusa Director $995,276 05 Feb 2026
Melissa A. Starovasnik Director $917,633 05 Feb 2026
Jan Johannessen Director $850,535 -$279,875 -25% 05 Feb 2026
Nicolas Barthelemy Director $800,210 21 Nov 2022
Katryn Blake Director $667,844 05 Feb 2026
Kevin B. Yankton Chief Accounting Officer $316,837 17 May 2023

Recent Insider Transactions by Companies or Individuals for Twist Bioscience Corp

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Robert F. Werner TWST Common Stock Sale -0.45% $11,421 $46.43 -246 54,799 06 Mar 2026 Direct
Dennis Cho TWST Common Stock Sale -0.31% $19,731 $46.43 -425 138,257 06 Mar 2026 Direct
Paula Green TWST Common Stock Sale -0.75% $43,408 $46.43 -935 124,401 06 Mar 2026 Direct
Emily M. Leproust TWST Common Stock Sale -0.28% $112,490 $46.43 -2,423 860,629 06 Mar 2026 Direct
Patrick John Finn TWST Common Stock Sale -1.49% $200,572 $46.71 -4,294 284,129 23 Feb 2026 Direct
Robert F. Werner TWST Common Stock Sale -2.98% $79,080 $46.71 -1,693 55,045 23 Feb 2026 Direct
Adam Laponis TWST Common Stock Sale -1.6% $97,390 $46.71 -2,085 128,291 23 Feb 2026 Direct
Emily M. Leproust TWST Common Stock Sale -0.83% $336,544 $46.71 -7,205 863,052 23 Feb 2026 Direct
Paula Green TWST Common Stock Sale -1.16% $68,430 $46.71 -1,465 125,336 23 Feb 2026 Direct
Dennis Cho TWST Common Stock Sale -0.6% $39,423 $46.71 -844 138,682 23 Feb 2026 Direct
Paula Green TWST Common Stock Sale -23.8% $2,064,770 $52.40 -39,404 126,041 17 Feb 2026 Direct
Patrick John Finn TWST Common Stock Sale -19.3% $3,562,417 $51.65 -68,967 287,788 17 Feb 2026 Direct
Patrick John Finn TWST Common Stock Options Exercise 16.5% 50,505 356,755 17 Feb 2026 Direct
Patrick John Finn TWST Stock Option (right to buy) Options Exercise -100% -50,505 0 17 Feb 2026 Direct
Robert Chess TWST Common Stock Sale -9.39% $105,402 $48.26 -2,184 21,084 13 Feb 2026 Direct
Patrick John Finn TWST Common Stock Sale -0.57% $87,572 $50.04 -1,750 306,250 13 Feb 2026 Direct
Patrick John Finn TWST Common Stock Options Exercise 0.4% 1,212 308,000 13 Feb 2026 Direct
Patrick John Finn TWST Stock Option (right to buy) Options Exercise -6.29% -1,212 18,052 13 Feb 2026 Direct
Patrick John Finn TWST Common Stock Sale -1.13% $175,788 $50.22 -3,500 306,788 12 Feb 2026 Direct
Patrick John Finn TWST Common Stock Options Exercise 0.81% 2,500 310,288 12 Feb 2026 Direct
Patrick John Finn TWST Stock Option (right to buy) Options Exercise -11.8% -2,500 18,705 12 Feb 2026 Direct
Adam Laponis TWST Common Stock Sale -5.11% $350,000 $50.00 -7,000 130,031 12 Feb 2026 Direct
Dennis Cho TWST Common Stock Sale -3.48% $249,650 $49.93 -5,000 138,581 11 Feb 2026 Direct
Robert F. Werner TWST Common Stock Gift -3.4% -2,000 56,738 09 Feb 2026 Direct
Jan Johannessen TWST Common Stock Sale -11% $105,395 $47.91 -2,200 17,754 06 Feb 2026 Direct
Keith Crandell TWST Common Stock Award 22.7% 5,095 27,571 05 Feb 2026 Direct
Melissa A. Starovasnik TWST Common Stock Award 23.6% 5,095 26,722 05 Feb 2026 Direct
Robert P. Ragusa TWST Common Stock Award 21.3% 5,095 28,983 05 Feb 2026 Direct
Robert Chess TWST Common Stock Award 28% 5,095 23,268 05 Feb 2026 Direct
Nelson Chan TWST Common Stock Award 18.1% 5,095 33,251 05 Feb 2026 Direct
Katryn Blake TWST Common Stock Award 35.5% 5,095 19,448 05 Feb 2026 Direct
Jan Johannessen TWST Common Stock Award 34.3% 5,095 19,954 05 Feb 2026 Direct
Robert F. Werner TWST Common Stock Sale -10.6% $319,536 $45.65 -7,000 58,738 04 Feb 2026 Direct
Emily M. Leproust TWST Common Stock Sale -0.57% $232,927 $46.58 -5,001 869,312 03 Feb 2026 Direct
Robert F. Werner TWST Common Stock Sale -0.27% $8,151 $46.58 -175 65,738 03 Feb 2026 Direct
Paula Green TWST Common Stock Sale -0.72% $55,612 $46.58 -1,194 165,445 03 Feb 2026 Direct
Patrick John Finn TWST Common Stock Sale -0.87% $125,988 $46.58 -2,705 307,788 03 Feb 2026 Direct
Dennis Cho TWST Common Stock Sale -0.76% $51,187 $46.58 -1,099 143,581 03 Feb 2026 Direct
Patrick John Finn TWST Common Stock Sale -0.76% $107,330 $44.91 -2,390 310,493 23 Jan 2026 Direct
Adam Laponis TWST Common Stock Sale -2.14% $120,000 $40.00 -3,000 137,031 13 Jan 2026 Direct
Patrick John Finn TWST Common Stock Sale -6.92% $931,160 $40.00 -23,279 312,883 13 Jan 2026 Direct
Patrick John Finn TWST Common Stock Options Exercise 0.99% 3,279 336,162 13 Jan 2026 Direct
Patrick John Finn TWST Stock Option (right to buy) Options Exercise -100% -3,279 0 13 Jan 2026 Direct
Adam Laponis TWST Common Stock Sale -1.92% $96,545 $35.26 -2,738 140,031 09 Jan 2026 Direct
Paula Green TWST Common Stock Sale -0.16% $9,434 $34.56 -273 166,639 22 Dec 2025 Direct
Dennis Cho TWST Common Stock Sale -0.22% $11,196 $34.56 -324 144,680 22 Dec 2025 Direct
Emily M. Leproust TWST Common Stock Sale -0.18% $55,462 $34.56 -1,605 874,313 22 Dec 2025 Direct
Dennis Cho TWST Common Stock Sale -0.27% $13,085 $32.88 -398 145,004 08 Dec 2025 Direct
Emily M. Leproust TWST Common Stock Sale -0.26% $74,140 $32.88 -2,255 875,918 08 Dec 2025 Direct
Paula Green TWST Common Stock Sale -0.52% $28,834 $32.88 -877 166,912 08 Dec 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.