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TWST insider trading — Twist Bioscience Corp

Over the last 90 days, insiders at Twist Bioscience Corp (TWST) made 0 open-market purchases worth $0 and 27 open-market sales worth $15.36M, making them net sellers by $15.36M. The largest sale was by Finn Patrick John (President and COO), who sold 25,714 shares for $4.86M on Oct 2, 2026.

Updated Oct 16, 2026.

Insider buying · 90d
$0
Insider selling · 90d
$15.36M
Net · 90d
−$15.36M
Last 30 days
0B / 9S

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Recent TWST insider transactions

Every Form 4 filed by Twist Bioscience Corp officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.

Trade dateInsiderRoleTypeOwnershipSharesPriceValueFiling
Oct 9, 2026Laponis AdamChief Financial OfficerS · SaleDirect2,462$156.30$385KForm 4
Oct 5, 2026Leproust Emily M.Chief Executive OfficerS · Sale · 10b5-1Direct4,548$202.15$919KForm 4
Oct 2, 2026Cho DennisSee RemarksS · SaleDirect9,514$188.88$1.80MForm 4
Oct 2, 2026Finn Patrick JohnPresident and COOS · SaleDirect25,714$188.88$4.86MForm 4
Oct 2, 2026Leproust Emily M.Chief Executive OfficerS · Sale · 10b5-1Direct45,736$188.88$8.64MForm 4
Oct 2, 2026Green PaulaSVP of Human ResourcesS · SaleDirect10,088$188.88$1.91MForm 4
Oct 2, 2026Werner Robert F.Chief Accounting OfficerS · SaleDirect1,482$188.88$280KForm 4
Oct 2, 2026Laponis AdamChief Financial OfficerS · SaleDirect8,057$188.88$1.52MForm 4
Oct 1, 2026Leproust Emily M.Chief Executive OfficerS · Sale · 10b5-1Direct655$200.00$131KForm 4
Sep 24, 2026Leproust Emily M.Chief Executive OfficerS · Sale · 10b5-1Direct5,203$177.38$923KForm 4
Sep 21, 2026Cho DennisSee RemarksS · SaleDirect348$165.49$58KForm 4
Sep 21, 2026Green PaulaSVP of Human ResourcesS · SaleDirect294$165.49$49KForm 4
Sep 21, 2026Leproust Emily M.Chief Executive OfficerS · SaleDirect1,687$165.49$279KForm 4
Sep 17, 2026Leproust Emily M.Chief Executive OfficerM · Option exercise · 10b5-1Direct208,708$20.21$4.22MForm 4
Sep 17, 2026Leproust Emily M.Chief Executive OfficerS · Sale · 10b5-1Direct356,546$157.99$56.33MForm 4
Sep 8, 2026Leproust Emily M.Chief Executive OfficerS · SaleDirect2,302$122.62$282KForm 4
Sep 8, 2026Werner Robert F.Chief Accounting OfficerS · SaleDirect238$122.62$29KForm 4
Sep 8, 2026Green PaulaSVP of Human ResourcesS · SaleDirect907$122.62$111KForm 4
Sep 8, 2026Cho DennisSee RemarksS · SaleDirect412$122.62$51KForm 4
Aug 25, 2026Leproust Emily M.Chief Executive OfficerS · Sale · 10b5-1Direct41,570$151.98$6.32MForm 4
Aug 24, 2026Werner Robert F.Chief Accounting OfficerS · SaleDirect854$140.77$120KForm 4
Aug 21, 2026Leproust Emily M.Chief Executive OfficerS · SaleDirect6,639$139.07$923KForm 4
Aug 21, 2026Werner Robert F.Chief Accounting OfficerS · SaleDirect669$139.07$93KForm 4
Aug 21, 2026Cho DennisSee RemarksS · SaleDirect1,598$139.07$222KForm 4
Aug 21, 2026Green PaulaSVP of Human ResourcesS · SaleDirect1,360$139.07$189KForm 4
Aug 21, 2026Laponis AdamChief Financial OfficerS · SaleDirect1,965$139.07$273KForm 4
Aug 21, 2026Finn Patrick JohnPresident and COOS · SaleDirect4,046$139.07$563KForm 4
Aug 19, 2026Cho DennisSee RemarksS · Sale · 10b5-1Direct14,205$129.75$1.84MForm 4
Aug 18, 2026Finn Patrick JohnPresident and COOM · Option exercise · 10b5-1Direct23,355$67.85$1.58MForm 4
Aug 18, 2026Finn Patrick JohnPresident and COOS · Sale · 10b5-1Direct78,355$117.64$9.22MForm 4
Aug 12, 2026Blake KatrynDirectorS · SaleDirect2,240$122.88$275KForm 4
Aug 12, 2026Leproust Emily M.Chief Executive OfficerM · Option exercise · 10b5-1Direct19,952$26.66$532KForm 4
Aug 12, 2026Leproust Emily M.Chief Executive OfficerS · Sale · 10b5-1Direct19,952$125.08$2.50MForm 4
Aug 10, 2026Leproust Emily M.Chief Executive OfficerM · Option exercise · 10b5-1Direct113,318$26.66$3.02MForm 4
Aug 10, 2026Leproust Emily M.Chief Executive OfficerS · Sale · 10b5-1Direct113,318$125.16$14.18MForm 4
Aug 7, 2026Chess RobertDirectorM · Option exercise · 10b5-1Direct18,417$11.89$219KForm 4
Aug 7, 2026Chess RobertDirectorS · Sale · 10b5-1Direct18,417$110.89$2.04MForm 4
Aug 5, 2026Cho DennisSee RemarksS · Sale · 10b5-1Direct14,205$109.75$1.56MForm 4
Aug 3, 2026Werner Robert F.Chief Accounting OfficerS · SaleDirect167$85.32$14KForm 4
Aug 3, 2026Cho DennisSee RemarksS · SaleDirect1,070$85.32$91KForm 4
Aug 3, 2026Leproust Emily M.Chief Executive OfficerS · SaleDirect5,101$85.32$435KForm 4
Aug 3, 2026Green PaulaSVP of Human ResourcesS · SaleDirect1,133$85.32$97KForm 4
Aug 3, 2026Finn Patrick JohnPresident and COOS · SaleDirect2,888$85.32$246KForm 4
Jul 23, 2026Finn Patrick JohnPresident and COOS · SaleDirect2,238$93.89$210KForm 4

TWST insider trading FAQ

Are insiders buying TWST stock?

Not on the open market. In the last 90 days, Twist Bioscience Corp insiders made no open-market purchases, and 27 open-market sales totaling $15.36M. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).

Who are the insiders trading TWST?

Recent sellers: Blake Katryn, Cho Dennis, Finn Patrick John, Green Paula, Laponis Adam, Leproust Emily M..

Where does TWST insider trading data come from?

Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.

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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.