TWST
TWIST BIOSCIENCE (TWST)
NASDAQ
$144.76-$0.84 (-0.57%)
Price as of Aug 21, 2026 7:55 PM EDT
  • $9.1B
    Market Cap
  • 409.23%
    1-Year Change
  • Diagnostics & Research
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
9.37%
5.8M
+279,529 (+4.79%)
Jun 30, 2026
VANGUARD GROUP INC
9.28%
5.8M
+8,049 (+0.14%)
Dec 31, 2025
BLACKROCK FUNDING, INC. /DE
8.96%
5.6M
+101,842 (+1.83%)
Dec 31, 2024
BLACKROCK INC.
8.71%
5.4M
-351,152 (-6.47%)
Jun 30, 2024
ARTISAN PARTNERS LIMITED PARTNERSHIP
7.71%
4.8M
-1.6M (-32.61%)
Jun 30, 2026
FMR LLC
7.55%
4.7M
+2.8M (+59.81%)
Jun 30, 2026
ARK INVESTMENT MANAGEMENT LLC
7.31%
4.5M
-1.8M (-39.41%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions1.3B (75.10%)
  • Mutual Funds411.5M (24.67%)
  • Insiders4.0M (0.24%)
  • Other0 (0.00%)

Insider Transactions

  • 0.24% (4.0M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 9
    Number of InsiderSelling (last 12 months)
  • $1.3B
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Cho Dennis
See Remarks
Sell
Aug 19, 2026
$1.8M
14,205
$129.75
75,661
Finn Patrick John
President and COO
Exempt
Aug 18, 2026
$0.00
23,355
$0.00
0
Finn Patrick John
President and COO
Exempt
Aug 18, 2026
$1.6M
23,355
$67.85
293,033
Finn Patrick John
President and COO
Sell
Aug 18, 2026
$3.9M
33,354
$115.90
259,679
Finn Patrick John
President and COO
Sell
Aug 18, 2026
$1.2M
10,420
$116.82
249,259
Finn Patrick John
President and COO
Sell
Aug 18, 2026
$1.0M
8,868
$117.70
240,391
Finn Patrick John
President and COO
Sell
Aug 18, 2026
$535,680.00
4,500
$119.04
235,891
Finn Patrick John
President and COO
Sell
Aug 18, 2026
$1.5M
12,917
$119.86
222,974
Finn Patrick John
President and COO
Sell
Aug 18, 2026
$761,860.07
6,296
$121.01
216,678
Finn Patrick John
President and COO
Sell
Aug 18, 2026
$245,162.00
2,000
$122.58
214,678
Leproust Emily M.
Chief Executive Officer
Exempt
Aug 12, 2026
$0.00
19,952
$0.00
133,269
Leproust Emily M.
Chief Executive Officer
Exempt
Aug 12, 2026
$531,920.32
19,952
$26.66
838,890
Leproust Emily M.
Chief Executive Officer
Sell
Aug 12, 2026
$2.5M
19,952
$125.08
818,938
CHESS ROBERT
Exempt
Aug 07, 2026
$0.00
18,417
$0.00
0
CHESS ROBERT
Exempt
Aug 07, 2026
$218,978.13
18,417
$11.89
39,501
CHESS ROBERT
Sell
Aug 07, 2026
$2.0M
18,417
$110.89
21,084
Cho Dennis
See Remarks
Sell
Aug 05, 2026
$1.6M
14,205
$109.75
89,866
WERNER ROBERT F.
Chief Accounting Officer
Sell
Aug 03, 2026
$14,248.64
167
$85.32
46,160
Cho Dennis
See Remarks
Sell
Aug 03, 2026
$91,293.68
1,070
$85.32
104,071
Finn Patrick John
President and COO
Sell
Jul 23, 2026
$210,132.53
2,238
$93.89
272,566
Leproust Emily M.
Chief Executive Officer
Sell
Jun 25, 2026
$1.8M
18,880
$95.00
824,039
Cho Dennis
See Remarks
Sell
Jun 24, 2026
$1.3M
14,205
$89.75
105,141
Cho Dennis
See Remarks
Sell
Jun 22, 2026
$30,213.55
346
$87.32
119,346
Leproust Emily M.
Chief Executive Officer
Sell
Jun 22, 2026
$147,400.21
1,688
$87.32
842,919
Green Paula
SVP of Human Resources
Sell
Jun 22, 2026
$25,410.82
291
$87.32
120,414
Green Paula
SVP of Human Resources
Exempt
Jun 15, 2026
$0.00
26,137
$0.00
0
Green Paula
SVP of Human Resources
Exempt
Jun 15, 2026
$609,776.21
26,137
$23.33
146,842
Green Paula
SVP of Human Resources
Sell
Jun 15, 2026
$2.0M
24,109
$81.62
122,733
Green Paula
SVP of Human Resources
Sell
Jun 15, 2026
$166,631.63
2,028
$82.17
120,705
Cho Dennis
See Remarks
Sell
Jun 08, 2026
$28,077.37
402
$69.84
119,692