TWST
Twist Bioscience Corp
155.60$
+8.7%
vs. previous close
Closing price · As of: Sep 17, 2026
Ownership
Ownership Structure
Who owns Twist Bioscience Corp (TWST)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 93.2% of the shares are freely tradable; institutional investors hold 123.8%.
Institutional ownership
?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
123.8%
Insiders
?Share of the stock held by the executives, founders and major shareholders of the company itself.
1.3%
Float
?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
93.2%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
23.0%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
66Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| ARK Investment Management LLC | 9.57 | 6,342,733 | -16.1 | 03/31/2026 |
| BlackRock Inc | 8.38 | 5,554,362 | -5.8 | 03/31/2026 |
| Artisan Partners Limited Partnership | 7.24 | 4,802,017 | -24.6 | 06/30/2026 |
| State Street Corp | 5.54 | 3,670,682 | +1.2 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 4.00 | 2,649,101 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.98 | 2,639,044 | +0.0 | 03/31/2026 |
| EdgePoint Investment | 3.80 | 2,521,635 | -53.2 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| EdgePoint Global Portfolio Series F | 4.24 | 2,810,002 | +30.8 | 12/31/2025 |
| EdgePoint Global | 4.24 | 2,810,002 | +30.8 | 12/31/2025 |
| ARK Disruptive Innovation Full Composite | 3.62 | 2,400,963 | -32.4 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Leproust Emily M. | Chief Executive Officer | 768,427 | 119,567,241 $ | Sep 8, 2026 | direct |
| Finn Patrick John | President and COO | 210,802 | 32,800,791 $ | Aug 21, 2026 | direct |
| Green Paula | SVP of Human Resources | 117,014 | 18,207,378 $ | Sep 8, 2026 | direct |
| Laponis Adam | Chief Financial Officer | 108,633 | 16,903,295 $ | Aug 21, 2026 | direct |
| Cho Dennis | See Remarks | 73,651 | 11,460,096 $ | Sep 8, 2026 | direct |
| Werner Robert F. | Chief Accounting Officer | 44,399 | 6,908,484 $ | Sep 8, 2026 | direct |
| Chess Robert | Director | 21,084 | 3,280,670 $ | Aug 7, 2026 | direct |
| Blake Katryn | Director | 17,208 | 2,677,565 $ | Aug 12, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 8, 2026 | Cho Dennis | See Remarks | Sell | 412 | 122.62 | 50,521 |
| Sep 8, 2026 | Green Paula | SVP of Human Resources | Sell | 907 | 122.62 | 111,220 |
| Sep 8, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 2,302 | 122.62 | 282,280 |
| Sep 8, 2026 | Werner Robert F. | Chief Accounting Officer | Sell | 238 | 122.62 | 29,185 |
| Aug 25, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 1,093 | 154.45 | 168,809 |
| Aug 25, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 9,181 | 153.93 | 1,413,204 |
| Aug 25, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 6,412 | 152.75 | 979,433 |
| Aug 25, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 12,236 | 151.36 | 1,851,980 |
| Aug 25, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 12,648 | 150.56 | 1,904,333 |
| Aug 24, 2026 | Werner Robert F. | Chief Accounting Officer | Sell | 854 | 140.77 | 120,220 |
| Aug 21, 2026 | Cho Dennis | See Remarks | Sell | 1,598 | 139.07 | 222,227 |
| Aug 21, 2026 | Finn Patrick John | President and COO | Sell | 4,046 | 139.07 | 562,661 |
| Aug 21, 2026 | Green Paula | SVP of Human Resources | Sell | 1,360 | 139.07 | 189,130 |
| Aug 21, 2026 | Laponis Adam | Chief Financial Officer | Sell | 1,965 | 139.07 | 273,265 |
| Aug 21, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 6,639 | 139.07 | 923,259 |
| Aug 21, 2026 | Werner Robert F. | Chief Accounting Officer | Sell | 669 | 139.07 | 93,035 |
| Aug 19, 2026 | Cho Dennis | See Remarks | Sell | 14,205 | 129.75 | 1,843,099 |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell | 2,000 | 122.58 | 245,162 |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell | 6,296 | 121.01 | 761,860 |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell | 12,917 | 119.86 | 1,548,206 |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell | 4,500 | 119.04 | 535,680 |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell | 8,868 | 117.70 | 1,043,737 |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell | 10,420 | 116.82 | 1,217,266 |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell | 33,354 | 115.90 | 3,865,695 |
| Aug 18, 2026 | Finn Patrick John | President and COO | Other | 23,355 | 67.85 | 1,584,637 |
| Aug 12, 2026 | Blake Katryn | Director | Sell | 2,240 | 122.88 | 275,251 |
| Aug 12, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 19,952 | 125.08 | 2,495,508 |
| Aug 12, 2026 | Leproust Emily M. | Chief Executive Officer | Other | 19,952 | 26.66 | 531,920 |
| Aug 10, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 113,318 | 125.16 | 14,183,051 |
| Aug 10, 2026 | Leproust Emily M. | Chief Executive Officer | Other | 113,318 | 26.66 | 3,021,058 |
| Aug 7, 2026 | Chess Robert | Director | Sell | 18,417 | 110.89 | 2,042,261 |
| Aug 7, 2026 | Chess Robert | Director | Other | 18,417 | 11.89 | 218,978 |
| Aug 5, 2026 | Cho Dennis | See Remarks | Sell | 14,205 | 109.75 | 1,558,999 |
| Aug 3, 2026 | Finn Patrick John | President and COO | Sell | 2,888 | 85.32 | 246,408 |
| Aug 3, 2026 | Green Paula | SVP of Human Resources | Sell | 1,133 | 85.32 | 96,669 |
| Aug 3, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 5,101 | 85.32 | 435,223 |
| Aug 3, 2026 | Werner Robert F. | Chief Accounting Officer | Sell | 167 | 85.32 | 14,249 |
| Aug 3, 2026 | Cho Dennis | See Remarks | Sell | 1,070 | 85.32 | 91,294 |
| Jul 23, 2026 | Finn Patrick John | President and COO | Sell | 2,238 | 93.89 | 210,133 |
| Jul 9, 2026 | Laponis Adam | Chief Financial Officer | Sell | 2,399 | 94.33 | 226,307 |
| Apr 22, 2026 | Emily M Leproust | CEO | Sell | 8,061 | 65.29 | 526,303 |
| Apr 21, 2026 | Emily M Leproust | CEO | Sell | 1,610 | 65.01 | 104,666 |
| Apr 17, 2026 | Adam Laponis | CFO | Sell | 4,000 | 60.00 | 240,000 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.