Twist Bioscience Corporation (TWST) Insider Trading
Over the last 3 months, TWST insiders made 0 open-market buys and 51 sales, a net sale of -$49.9M (SEC Form 4). Over the last 6 months, 179 institutions increased and 191 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
51
Net (3m)
-$49.9M
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price +115.9%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 27, 2026 | Leproust Emily M.director, officer: Chief Executive Officer | Sell | 9,181 | $153.93 |
| Aug 27, 2026 | Leproust Emily M.director, officer: Chief Executive Officer | Sell | 1,093 | $154.45 |
| Aug 27, 2026 | Leproust Emily M.director, officer: Chief Executive Officer | Sell | 12,648 | $150.56 |
| Aug 27, 2026 | Leproust Emily M.director, officer: Chief Executive Officer | Sell | 6,412 | $152.75 |
| Aug 27, 2026 | Leproust Emily M.director, officer: Chief Executive Officer | Sell | 12,236 | $151.35 |
| Aug 25, 2026 | Laponis Adamofficer: Chief Financial Officer | Sell | 1,965 | $139.07 |
| Aug 25, 2026 | WERNER ROBERT F.officer: Chief Accounting Officer | Sell | 854 | $140.77 |
| Aug 25, 2026 | WERNER ROBERT F.officer: Chief Accounting Officer | Sell | 669 | $139.07 |
| Aug 25, 2026 | Finn Patrick Johnofficer: President and COO | Sell | 4,046 | $139.07 |
| Aug 25, 2026 | Leproust Emily M.director, officer: Chief Executive Officer | Sell | 6,639 | $139.07 |
| Aug 25, 2026 | Cho Dennisofficer: See Remarks | Sell | 1,598 | $139.07 |
| Aug 25, 2026 | Green Paulaofficer: SVP of Human Resources | Sell | 1,360 | $139.07 |
| Aug 21, 2026 | Cho Dennisofficer: See Remarks | Sell | 14,205 | $129.75 |
| Aug 20, 2026 | Finn Patrick Johnofficer: President and COO | Sell | 33,354 | $115.90 |
| Aug 20, 2026 | Finn Patrick Johnofficer: President and COO | Sell | 10,420 | $116.82 |
| Aug 20, 2026 | Finn Patrick Johnofficer: President and COO | Sell | 4,500 | $119.04 |
| Aug 20, 2026 | Finn Patrick Johnofficer: President and COO | Sell | 6,296 | $121.01 |
| Aug 20, 2026 | Finn Patrick Johnofficer: President and COO | Sell | 8,868 | $117.70 |
| Aug 20, 2026 | Finn Patrick Johnofficer: President and COO | Option | 23,355 | $67.85 |
| Aug 20, 2026 | Finn Patrick Johnofficer: President and COO | Sell | 12,917 | $119.86 |
| Aug 20, 2026 | Finn Patrick Johnofficer: President and COO | Sell | 2,000 | $122.58 |
| Aug 14, 2026 | Leproust Emily M.director, officer: Chief Executive Officer | Sell | 19,952 | $125.08 |
| Aug 14, 2026 | Leproust Emily M.director, officer: Chief Executive Officer | Option | 19,952 | $26.66 |
| Aug 14, 2026 | BLAKE KATRYNdirector | Sell | 2,240 | $122.88 |
| Aug 12, 2026 | Leproust Emily M.director, officer: Chief Executive Officer | Sell | 113,318 | $125.16 |
| Aug 12, 2026 | Leproust Emily M.director, officer: Chief Executive Officer | Option | 113,318 | $26.66 |
| Aug 11, 2026 | CHESS ROBERTdirector | Option | 18,417 | $11.89 |
| Aug 11, 2026 | CHESS ROBERTdirector | Sell | 18,417 | $110.89 |
| Aug 7, 2026 | Cho Dennisofficer: See Remarks | Sell | 14,205 | $109.75 |
| Aug 5, 2026 | Green Paulaofficer: SVP of Human Resources | Sell | 1,133 | $85.32 |
Source: TWST SEC Form 4 filings, latest Aug 27, 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
179
New positions
164
Reduced
191
Sold out
33
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| ARTISAN PARTNERS LIMITED PARTNERSHIP | Increased | 6.4M | May 13, 2026 |
| ARK INVESTMENT MANAGEMENT LLC | Reduced | 6.3M | May 12, 2026 |
| BlackRock, Inc. | Increased | 5.8M | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 5.6M | May 13, 2026 |
| EDGEPOINT INVESTMENT GROUP INC. | Increased | 5.4M | May 15, 2026 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Reduced | 5.3M | May 8, 2026 |
| Artisan Partners Limited Partnership | Reduced | 4.8M | Aug 13, 2026 |
| FMR LLC | Increased | 4.7M | Aug 13, 2026 |
| ARK Investment Management LLC | Reduced | 4.5M | Aug 14, 2026 |
| STATE STREET CORP | Increased | 3.7M | May 15, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 3.6M | Aug 14, 2026 |
| STATE STREET CORP | Reduced | 3.2M | Aug 7, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 2.8M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 2.7M | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 2.6M | May 8, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.