Twist Bioscience Corporation (TWST) Insider Trading

Over the last 3 months, TWST insiders made 0 open-market buys and 42 sales, a net sale of -$10.5M (SEC Form 4). Over the last 6 months, 168 institutions increased and 166 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
42
Net (3m)
-$10.5M
Insider trades by month Buys Sells
Jan
Feb
Mar
Apr
May
Jun
Context3-month price +50.5%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Jun 2, 2026Laponis Adamofficer: Chief Financial OfficerSell4,000$70.00
Jun 2, 2026Cho Dennisofficer: See RemarksSell14,205$69.75
Jun 1, 2026Leproust Emily M.director, officer: Chief Executive OfficerSell1,482$65.33
Jun 1, 2026Leproust Emily M.director, officer: Chief Executive OfficerSell7,623$67.95
Jun 1, 2026Starovasnik Melissa A.directorSell2,500$68.00
Jun 1, 2026Leproust Emily M.director, officer: Chief Executive OfficerSell6,465$68.61
Jun 1, 2026Leproust Emily M.director, officer: Chief Executive OfficerSell900$66.85
Jun 1, 2026Leproust Emily M.director, officer: Chief Executive OfficerOption16,470$8.82
May 28, 2026Leproust Emily M.director, officer: Chief Executive OfficerSell1,265$66.28
May 28, 2026Leproust Emily M.director, officer: Chief Executive OfficerSell24,282$65.08
May 28, 2026Starovasnik Melissa A.directorSell500$61.04
May 28, 2026Leproust Emily M.director, officer: Chief Executive OfficerOption25,017$8.82
May 28, 2026WERNER ROBERT F.officer: Chief Accounting OfficerSell800$62.48
May 28, 2026Leproust Emily M.director, officer: Chief Executive OfficerSell23,752$65.24
May 28, 2026Leproust Emily M.director, officer: Chief Executive OfficerOption24,282$8.82
May 26, 2026Finn Patrick Johnofficer: President and COOSell4,160$53.26
May 26, 2026Leproust Emily M.director, officer: Chief Executive OfficerSell6,888$53.26
May 26, 2026Laponis Adamofficer: Chief Financial OfficerSell2,019$53.26
May 26, 2026Green Paulaofficer: SVP of Human ResourcesSell1,399$53.26
May 26, 2026Cho Dennisofficer: See RemarksSell1,642$53.26
May 26, 2026WERNER ROBERT F.officer: Chief Accounting OfficerSell688$53.26
May 14, 2026JOHANNESSEN JANdirectorOption12,000$14.00
May 14, 2026JOHANNESSEN JANdirectorSell12,000$56.12
May 12, 2026WERNER ROBERT F.officer: Chief Accounting OfficerSell4,961$56.88
May 6, 2026Leproust Emily M.director, officer: Chief Executive OfficerSell5,127$57.15
May 6, 2026Green Paulaofficer: SVP of Human ResourcesSell1,116$57.15
May 6, 2026Cho Dennisofficer: See RemarksSell1,962$57.15
May 6, 2026WERNER ROBERT F.officer: Chief Accounting OfficerSell164$57.15
May 6, 2026Finn Patrick Johnofficer: President and COOSell2,844$57.15
Apr 29, 2026Starovasnik Melissa A.directorSell500$61.83

Source: TWST SEC Form 4 filings, latest Jun 2, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their TWST positions over the last 6 months (SEC Form 13F).

Increased
168
New positions
111
Reduced
166
Sold out
66
Largest moves
InstitutionActionSharesFiled
ARK INVESTMENT MANAGEMENT LLCIncreased7.6MFeb 11, 2026
ARTISAN PARTNERS LIMITED PARTNERSHIPIncreased6.4MMay 13, 2026
ARK INVESTMENT MANAGEMENT LLCReduced6.3MMay 12, 2026
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLCIncreased6.0MFeb 9, 2026
BLACKROCK, INC.Reduced5.9MFeb 12, 2026
ARTISAN PARTNERS LIMITED PARTNERSHIPReduced5.8MFeb 17, 2026
VANGUARD GROUP INCIncreased5.8MJan 29, 2026
BLACKROCK, INC.Reduced5.6MMay 13, 2026
EDGEPOINT INVESTMENT GROUP INC.Increased5.4MMay 15, 2026
EDGEPOINT INVESTMENT GROUP INC.Increased5.4MFeb 17, 2026
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLCReduced5.3MMay 8, 2026
STATE STREET CORPIncreased3.7MMay 15, 2026
STATE STREET CORPIncreased3.6MFeb 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position2.6MMay 8, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position2.6MMay 15, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.

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