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Twist Bioscience Corp

TWST
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
SEC CIK
0001581280

In the last 90 days, Twist Bioscience Corp insiders filed 0 open-market purchases and 30 sales; 337 institutions reported holding it in 13F filings for Q2 2026, worth $7.85B in total; ARK Invest is the only superinvestor holding it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Twist Bioscience Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
30 filings
8 insiders, $99.7M in total
Insiders trading
8
Net value
−$99.7M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Twist Bioscience Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Twist Bioscience Corp
NameTitleLast reported holdingLast filingFilings, past year
Leproust Emily M.Chief Executive Officer613,699Sep 25, 202630
Cho DennisSee Remarks73,303Sep 23, 202626
Green PaulaSVP of Human Resources116,720Sep 23, 202623
Werner Robert F.Chief Accounting Officer44,399Sep 10, 202619
Finn Patrick JohnPresident and COO210,802Aug 25, 202621
Laponis AdamChief Financial Officer108,633Aug 25, 202617
Blake KatrynDirector17,208Aug 14, 20262
Chess RobertDirector21,084Aug 11, 20264
Starovasnik Melissa A.Director22,222Jun 1, 20265
Johannessen JanDirector17,754May 14, 20263
Crandell KeithDirector27,571Feb 9, 20261
Ragusa Robert PDirector28,983Feb 9, 20261
Chan Nelson CDirector33,251Feb 9, 20261
Banyai WilliamSee Remark345,188May 7, 20240
Mai XiaoyingDirector31,057Feb 9, 20240
Thorburn James MChief Financial Officer86,334Jan 4, 20240
Yankton Kevin BruceChief Accounting Officer9,115May 19, 20230
Barthelemy NicolasDirector23,021Nov 23, 20220
Weiss PatrickChief Operating Officer47,401Apr 5, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jul 6, 2021 (view filing)Jul 24 daysFinn Patrick JohnChief Commercial OfficerSSale−2.70K$131.70−$355.9K−6.2%41.2K after
Jul 14, 2021 (view filing)Jul 122 daysLeproust Emily M.President & CEOSSale−2.00K$125.85−$251.7K−0.8%255.4K after4 lots
Jul 14, 2021 (view filing)Jul 122 daysChess RobertDirectorSSale−4.00K$125.91−$503.6K−6.0%63.0K after6 lots
Jul 23, 2021 (view filing)Jul 212 daysThorburn James MChief Financial OfficerSSale−5.00K$119.75−$598.8K−9.7%46.5K after
Jul 23, 2021 (view filing)Jul 212 daysWeiss PatrickChief Operating OfficerSSale−4.91K$119.75−$587.4K−8.8%50.7K after
Jul 28, 2021 (view filing)Jul 262 daysBanyai WilliamSee RemarksSSale−19.8K$115.25−$2.28M−5.5%339.5K after4 lots
Aug 4, 2021 (view filing)Aug 22 daysLeproust Emily M.President & CEOSSale−2.00K$120.48−$241.0K−0.8%252.4K after4 lots
Aug 5, 2021 (view filing)Aug 32 daysFinn Patrick JohnChief Commercial OfficerSSale−2.70K$117.27−$316.9K−6.2%40.9K after
Aug 13, 2021 (view filing)Aug 121 dayCrandell KeithDirectorSSale−1.41K$106.93−$151.0K−74.4%486 after
Aug 13, 2021 (view filing)Aug 121 dayCrandell KeithDirectorSSale−43.6K$107.01−$4.66M−36.4%76.0K after2 lots
Aug 16, 2021 (view filing)Aug 124 daysThorburn James MChief Financial OfficerSSale−6.00K$103.70−$622.2K−11.5%46.2K after
Aug 20, 2021 (view filing)Aug 182 daysJohannessen JanDirectorSSale−5.00K$97.11−$485.6K−72.5%1.90K after
Aug 20, 2021 (view filing)Aug 182 daysWeiss PatrickChief Operating OfficerSSale−4.91K$97.11−$476.3K−8.9%50.5K after
Aug 25, 2021 (view filing)Aug 232 daysBanyai WilliamSee RemarksSSale−20.1K$105.51−$2.12M−5.9%318.5K after7 lots
Aug 26, 2021 (view filing)Aug 242 daysFinn Patrick JohnChief Commercial OfficerSSale−91$108.26−$9.85K−0.2%39.8K after
Sep 1, 2021 (view filing)Aug 30-312 daysLeproust Emily M.President & CEOSSale−63.7K$108.84−$6.93M−22.0%225.5K after11 lots
Sep 3, 2021 (view filing)Sep 12 daysLeproust Emily M.President & CEOSSale−6.33K$115.48−$730.9K−2.8%219.1K after2 lots
Sep 7, 2021 (view filing)Sep 25 daysFinn Patrick JohnChief Commercial OfficerSSale−2.70K$117.99−$318.8K−6.4%39.8K after
Sep 13, 2021 (view filing)Sep 9-104 daysLeproust Emily M.President & CEOSSale−29.6K$118.55−$3.51M−11.9%219.1K after5 lots
Sep 14, 2021 (view filing)Sep 104 daysChess RobertDirectorSSale−4.00K$120.23−$480.9K−6.3%59.0K after
Sep 17, 2021 (view filing)Sep 152 daysWeiss PatrickChief Operating OfficerSSale−4.91K$112.52−$551.9K−9.1%49.2K after
Sep 22, 2021 (view filing)Sep 202 daysBanyai WilliamSee RemarksSSale−20.0K$113.90−$2.28M−6.3%298.5K after6 lots
Oct 6, 2021 (view filing)Oct 42 daysFinn Patrick JohnChief Commercial OfficerSSale−2.70K$104.27−$281.7K−6.4%39.6K after
Oct 8, 2021 (view filing)Oct 6-72 daysLeproust Emily M.President & CEOSSale−8.70K$98.04−$853.0K−4.8%172.5K after5 lots
Oct 14, 2021 (view filing)Oct 122 daysThorburn James MChief Financial OfficerSSale−8.00K$101.76−$814.1K−15.1%45.0K after
Oct 15, 2021 (view filing)Oct 132 daysLeproust Emily M.President & CEOSSale−1.74K$110.16−$191.7K−1.0%172.5K after
Oct 15, 2021 (view filing)Oct 132 daysWeiss PatrickChief Operating OfficerSSale−4.91K$104.00−$510.2K−9.1%49.0K after
Oct 21, 2021 (view filing)Oct 192 daysChess RobertDirectorSSale−300$120.00−$36.0K−0.5%58.7K after
Oct 25, 2021 (view filing)Oct 214 daysChess RobertDirectorSSale−3.70K$120.15−$444.6K−6.3%55.0K after
Oct 25, 2021 (view filing)Oct 214 daysLeproust Emily M.President & CEOSSale−1.74K$120.78−$210.2K−1.0%172.5K after2 lots
Oct 26, 2021 (view filing)Oct 251 dayBanyai WilliamSee RemarksSSale−19.8K$118.14−$2.34M−6.1%306.4K after4 lots
Nov 3, 2021 (view filing)Nov 12 daysChess RobertDirectorSSale−4.00K$120.15−$480.6K−7.3%51.0K after
Nov 4, 2021 (view filing)Nov 22 daysFinn Patrick JohnChief Commercial OfficerSSale−1.76K$127.23−$223.7K−4.3%39.3K after
Nov 4, 2021 (view filing)Nov 2-32 daysLeproust Emily M.President & CEOSSale−22.4K$130.40−$2.92M−11.7%168.8K after8 lots
Nov 8, 2021 (view filing)Nov 4-54 daysLeproust Emily M.President & CEOSSale−9.71K$138.87−$1.35M−5.4%168.8K after2 lots
Nov 17, 2021 (view filing)Nov 152 daysLeproust Emily M.President & CEOSSale−10.4K$115.34−$1.20M−5.8%168.8K after2 lots
Nov 19, 2021 (view filing)Nov 172 daysJohannessen JanDirectorSSale−5.00K$115.17−$575.9K−72.5%1.90K after
Nov 23, 2021 (view filing)Nov 221 dayBanyai WilliamSee RemarksSSale−20.0K$101.83−$2.03M−6.5%285.4K after8 lots
Nov 29, 2021 (view filing)Nov 245 daysWeiss PatrickChief Operating OfficerSSale−2.80K$95.29−$266.9K−5.6%47.5K after
Dec 6, 2021 (view filing)Dec 24 daysFinn Patrick JohnChief Commercial OfficerSSale−1.76K$88.04−$154.8K−4.4%38.2K after2 lots
Dec 10, 2021 (view filing)Dec 82 daysThorburn James MChief Financial OfficerSSale−7.00K$89.37−$625.6K−13.8%43.7K after7 lots
Dec 10, 2021 (view filing)Dec 82 daysLeproust Emily M.President & CEOSSale−6.96K$85.52−$595.2K−4.0%166.0K after3 lots
Dec 16, 2021 (view filing)Dec 142 daysWeiss PatrickChief Operating OfficerSSale−2.80K$84.00−$235.3K−5.6%47.5K after
Dec 17, 2021 (view filing)Dec 152 daysBanyai WilliamSee RemarksSSale−25.0K$85.20−$2.13M−8.8%260.4K after7 lots
Dec 23, 2021 (view filing)Dec 212 daysWeiss PatrickChief Operating OfficerSSale−3.92K$82.85−$324.6K−8.3%43.6K after
Dec 23, 2021 (view filing)Dec 212 daysFinn Patrick JohnChief Commercial OfficerSSale−219$82.85−$18.1K−0.6%38.2K after
Dec 27, 2021 (view filing)Dec 225 daysFinn Patrick JohnChief Commercial OfficerSSale−5.99K$85.09−$510.0K−13.6%38.2K after
Dec 29, 2021 (view filing)Dec 272 daysLeproust Emily M.President & CEOSSale−5.30K$80.90−$428.8K−3.2%159.6K after5 lots
Dec 30, 2021 (view filing)Dec 291 dayFinn Patrick JohnChief Commercial OfficerSSale−5.99K$75.62−$453.3K−11.9%44.3K after
Jan 5, 2022 (view filing)Jan 41 dayBanyai WilliamSee RemarksSSale−292$83.49−$24.4K−0.1%266.0K after