TWST
Twist Bioscience Corp
152.80$
-11.9%
vs. previous close
Closing price · As of: Oct 30, 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. 93.3% 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.
93.3%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
20.1%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
66Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 8.80 | 5,833,891 | +5.0 | 06/30/2026 |
| Artisan Partners Limited Partnership | 7.24 | 4,802,017 | -24.6 | 06/30/2026 |
| FMR Inc | 7.09 | 4,703,044 | +148.8 | 06/30/2026 |
| ARK Investment Management LLC | 6.86 | 4,549,803 | -28.3 | 06/30/2026 |
| T. Rowe Price Associates, Inc. | 5.48 | 3,634,652 | +5,069.8 | 06/30/2026 |
| State Street Corp | 4.88 | 3,232,532 | -11.9 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 4.26 | 2,824,989 | +6.6 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.07 | 2,699,280 | +2.3 | 06/30/2026 |
| 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 | +0.0 | 03/31/2026 |
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 | 562,760 | 85,989,728 $ | Oct 5, 2026 | direct |
| Finn Patrick John | President and COO | 182,843 | 27,938,410 $ | Oct 23, 2026 | direct |
| Green Paula | SVP of Human Resources | 106,632 | 16,293,370 $ | Oct 2, 2026 | direct |
| Laponis Adam | Chief Financial Officer | 98,114 | 14,991,819 $ | Oct 9, 2026 | direct |
| Cho Dennis | See Remarks | 63,789 | 9,746,959 $ | Oct 2, 2026 | direct |
| Werner Robert F. | Chief Accounting Officer | 42,917 | 6,557,718 $ | Oct 2, 2026 | direct |
| Chess Robert | Director | 21,084 | 3,221,635 $ | Aug 7, 2026 | direct |
| Blake Katryn | Director | 17,208 | 2,629,382 $ | 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 |
|---|---|---|---|---|---|---|
| Oct 23, 2026 | Finn Patrick John | President and COO | Sell | 2,245 | 134.59 | 302,152 |
| Oct 9, 2026 | Laponis Adam | Chief Financial Officer | Sell | 2,462 | 156.30 | 384,823 |
| Oct 5, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 45 | 207.46 | 9,336 |
| Oct 5, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 146 | 206.84 | 30,199 |
| Oct 5, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 297 | 205.78 | 61,116 |
| Oct 5, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 290 | 204.80 | 59,392 |
| Oct 5, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 432 | 203.61 | 87,958 |
| Oct 5, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 1,017 | 202.32 | 205,763 |
| Oct 5, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 481 | 201.26 | 96,804 |
| Oct 5, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 1,840 | 200.44 | 368,806 |
| Oct 2, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 45,736 | 188.88 | 8,638,799 |
| Oct 2, 2026 | Werner Robert F. | Chief Accounting Officer | Sell | 1,482 | 188.88 | 279,926 |
| Oct 2, 2026 | Laponis Adam | Chief Financial Officer | Sell | 8,057 | 188.88 | 1,521,838 |
| Oct 2, 2026 | Green Paula | SVP of Human Resources | Sell | 10,088 | 188.88 | 1,905,462 |
| Oct 2, 2026 | Finn Patrick John | President and COO | Sell | 25,714 | 188.88 | 4,856,963 |
| Oct 2, 2026 | Cho Dennis | See Remarks | Sell | 9,514 | 188.88 | 1,797,042 |
| Oct 1, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 655 | 200.00 | 131,000 |
| Sep 24, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 83 | 184.60 | 15,322 |
| Sep 24, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 501 | 183.76 | 92,066 |
| Sep 24, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 16 | 182.50 | 2,920 |
| Sep 24, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 21 | 181.45 | 3,810 |
| Sep 24, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 515 | 180.39 | 92,901 |
| Sep 24, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 143 | 179.93 | 25,730 |
| Sep 24, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 330 | 178.67 | 58,961 |
| Sep 24, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 164 | 177.17 | 29,056 |
| Sep 24, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 945 | 176.39 | 166,690 |
| Sep 24, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 2,485 | 175.23 | 435,450 |
| Sep 21, 2026 | Cho Dennis | See Remarks | Sell | 348 | 165.49 | 57,591 |
| Sep 21, 2026 | Green Paula | SVP of Human Resources | Sell | 294 | 165.49 | 48,654 |
| Sep 21, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 1,687 | 165.49 | 279,183 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 869 | 163.39 | 141,988 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 2,565 | 162.31 | 416,334 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 11,169 | 161.49 | 1,803,715 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 14,493 | 160.44 | 2,325,245 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 23,884 | 159.53 | 3,810,250 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 232,173 | 158.09 | 36,703,672 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 32,260 | 157.49 | 5,080,498 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 9,097 | 156.47 | 1,423,384 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 13,378 | 155.46 | 2,079,701 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 4,175 | 154.17 | 643,661 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 3,399 | 153.40 | 521,417 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 6,644 | 152.21 | 1,011,291 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Sell | 2,440 | 151.46 | 369,566 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Other | 75,439 | 8.82 | 665,372 |
| Sep 17, 2026 | Leproust Emily M. | Chief Executive Officer | Other | 133,269 | 26.66 | 3,552,952 |
| 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 |
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: October 30, 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.