TWST
insider transactionsTwist Bioscience Corp — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 30d
-118.8K
0 buy · 118.8K sell
Net value · 30d
-$8.3M
$0 in · $8.3M out
Sentiment · 30d
Net selling
0% buying · 100% selling
Open-market trades · 30d
19
0 buy · 118.8K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Exercise·M
SVP of Human Resources
$0
26.1K sh
Own New
-
Sell·S
SVP of Human Resources
$166.6K
2.0K sh · $82.17
Own -2%
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Sell·S
SVP of Human Resources
$2.0M
24.1K sh · $81.62
Own -16%
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Exercise·M
SVP of Human Resources
$609.8K
26.1K sh · $23.33
Own +22%
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Other·G
Chief Accounting Officer
$0
500 sh
Own -1%
-
Sell·S
Chief Accounting Officer
$77.8K
1.1K sh · $69.07
Own -2%
-
Sell·S
Chief Accounting Officer
$16.2K
232 sh · $69.84
Own -0%
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Sell·S
Chief Executive Officer
$158.2K
2.3K sh · $69.84
Own -0%
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Sell·S
SVP of Human Resources
$61.7K
884 sh · $69.84
Own -1%
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Sell·S
Dennis Cho KEY
Senior Vice President, Chief …
$28.1K
402 sh · $69.84
Own -0%
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Sell·S
Adam Laponis KEY
Chief Financial Officer · 10b5-1
$280.0K
4.0K sh · $70.00
Own -3%
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Sell·S
Dennis Cho KEY
Senior Vice President, Chief … · 10b5-1
$990.8K
14.2K sh · $69.75
Own -11%
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Sell·S
Director · 10b5-1
$170.0K
2.5K sh · $68.00
Own -10%
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Exercise·M
Chief Executive Officer · 10b5-1
$0
16.5K sh
Own +28%
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Sell·S
Chief Executive Officer · 10b5-1
$443.6K
6.5K sh · $68.61
Own -1%
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Sell·S
Chief Executive Officer · 10b5-1
$518.0K
7.6K sh · $67.95
Own -1%
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Sell·S
Chief Executive Officer · 10b5-1
$60.2K
900 sh · $66.85
Own -0%
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Sell·S
Chief Executive Officer · 10b5-1
$96.8K
1.5K sh · $65.33
Own -0%
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Exercise·M
Chief Executive Officer · 10b5-1
$145.3K
16.5K sh · $8.82
Own +2%
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Exercise·M
Chief Executive Officer · 10b5-1
$0
25.0K sh
Own +37%
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Sell·S
Chief Executive Officer · 10b5-1
$83.8K
1.3K sh · $66.28
Own -0%
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Sell·S
Chief Executive Officer · 10b5-1
$1.5M
23.8K sh · $65.24
Own -3%
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Exercise·M
Chief Executive Officer · 10b5-1
$220.6K
25.0K sh · $8.82
Own +3%
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Sell·S
Chief Accounting Officer
$50.0K
800 sh · $62.48
Own -2%
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Sell·S
Director · 10b5-1
$30.5K
500 sh · $61.04
Own -2%
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Exercise·M
Chief Executive Officer · 10b5-1
$0
24.3K sh
Own +26%
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Sell·S
Chief Executive Officer · 10b5-1
$1.6M
24.3K sh · $65.08
Own -3%
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Exercise·M
Chief Executive Officer · 10b5-1
$214.2K
24.3K sh · $8.82
Own +3%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 15, 2026 | Paula Green | Exercise M | 26.1K | $0 |
| Jun 15, 2026 | Paula Green | Sell S | 2.0K | $166.6K |
| Jun 15, 2026 | Paula Green | Sell S | 24.1K | $2.0M |
| Jun 15, 2026 | Paula Green | Exercise M | 26.1K | $609.8K |
| Jun 8, 2026 | Robert F. Werner | Other G | 500 | $0 |
| Jun 8, 2026 | Robert F. Werner | Sell S | 1.1K | $77.8K |
| Jun 8, 2026 | Robert F. Werner | Sell S | 232 | $16.2K |
| Jun 8, 2026 | Emily M. Leproust KEY | Sell S | 2.3K | $158.2K |
| Jun 8, 2026 | Paula Green | Sell S | 884 | $61.7K |
| Jun 8, 2026 | Dennis Cho KEY | Sell S | 402 | $28.1K |
| May 29, 2026 | Adam Laponis KEY 10b5-1 | Sell S | 4.0K | $280.0K |
| May 29, 2026 | Dennis Cho KEY 10b5-1 | Sell S | 14.2K | $990.8K |
| May 28, 2026 | Melissa A. Starovasnik 10b5-1 | Sell S | 2.5K | $170.0K |
| May 28, 2026 | Emily M. Leproust KEY 10b5-1 | Exercise M | 16.5K | $0 |
| May 28, 2026 | Emily M. Leproust KEY 10b5-1 | Sell S | 6.5K | $443.6K |
| May 28, 2026 | Emily M. Leproust KEY 10b5-1 | Sell S | 7.6K | $518.0K |
| May 28, 2026 | Emily M. Leproust KEY 10b5-1 | Sell S | 900 | $60.2K |
| May 28, 2026 | Emily M. Leproust KEY 10b5-1 | Sell S | 1.5K | $96.8K |
| May 28, 2026 | Emily M. Leproust KEY 10b5-1 | Exercise M | 16.5K | $145.3K |
| May 27, 2026 | Emily M. Leproust KEY 10b5-1 | Exercise M | 25.0K | $0 |
| May 27, 2026 | Emily M. Leproust KEY 10b5-1 | Sell S | 1.3K | $83.8K |
| May 27, 2026 | Emily M. Leproust KEY 10b5-1 | Sell S | 23.8K | $1.5M |
| May 27, 2026 | Emily M. Leproust KEY 10b5-1 | Exercise M | 25.0K | $220.6K |
| May 26, 2026 | Robert F. Werner | Sell S | 800 | $50.0K |
| May 26, 2026 | Melissa A. Starovasnik 10b5-1 | Sell S | 500 | $30.5K |
| May 26, 2026 | Emily M. Leproust KEY 10b5-1 | Exercise M | 24.3K | $0 |
| May 26, 2026 | Emily M. Leproust KEY 10b5-1 | Sell S | 24.3K | $1.6M |
| May 26, 2026 | Emily M. Leproust KEY 10b5-1 | Exercise M | 24.3K | $214.2K |
About TWST insider trading
This page tracks insider transactions for Twist Bioscience Corp (TWST) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.