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SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•185 filings

TWST

Twist Bioscience Corp

Net sales of $96M over the last 3 months

4 sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.

How to read this signal

Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.

JSON example

3-month balance

−$95,962,288

0 buyers · 4 sellers

12-month purchases

$0.00

0 distinct insiders

12-month sales

$117,625,514

9 distinct insiders

Highlighted alerts

8

81 Rule 10b5-1 trades treated as informational

Buying cluster · 30 days

Fewer than three distinct buyers

CEO/CFO purchases · 12 months

No executive purchases found

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Form 4 raw → Raspberry

The value is in what we do not call a signal.

The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.

100
Raw transactions
Everything returned by the filing
89
Voluntary view
P/S trades after deterministic checks
47
Administrative noise
Stored, never alerted
64
10b5-1
Shown as informational
SEC ownership XML facts
Code
S
Shares
2,245
Price
$134.59
Footnotes
1

Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the satisfaction of a tax withholding obligation to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person.

Raspberry interpretation
Informational — no alert

Reason: tax_withholding. The filing footnotes identify tax withholding.

Verify in SEC EDGAR

Recent transactions

Voluntary purchases and sales; administrative noise stays hidden.

89 transactions

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
45
Price
$207.46
Value
$9,336
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
146
Price
$206.84
Value
$30,199
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
297
Price
$205.78
Value
$61,116
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
290
Price
$204.80
Value
$59,392
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
432
Price
$203.61
Value
$87,958
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
1,017
Price
$202.32
Value
$205,763
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
481
Price
$201.26
Value
$96,804
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
1,840
Price
$200.44
Value
$368,806
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
655
Price
$200.00
Value
$131,000
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
83
Price
$184.60
Value
$15,322
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
501
Price
$183.76
Value
$92,066
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
16
Price
$182.50
Value
$2,920
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
21
Price
$181.45
Value
$3,810
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
515
Price
$180.39
Value
$92,901
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
143
Price
$179.93
Value
$25,730
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
330
Price
$178.67
Value
$58,961
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
164
Price
$177.17
Value
$29,056
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
945
Price
$176.39
Value
$166,690
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
2,485
Price
$175.23
Value
$435,450
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
232,173
Price
$158.09
Value
$36,703,672
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
32,260
Price
$157.49
Value
$5,080,498
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
9,097
Price
$156.47
Value
$1,423,384
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
13,378
Price
$155.46
Value
$2,079,701
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
4,175
Price
$154.17
Value
$643,661
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
3,399
Price
$153.40
Value
$521,417
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
6,644
Price
$152.21
Value
$1,011,291
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
2,440
Price
$151.46
Value
$369,566
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
869
Price
$163.39
Value
$141,988
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
2,565
Price
$162.31
Value
$416,334
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
11,169
Price
$161.49
Value
$1,803,715
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
14,493
Price
$160.44
Value
$2,325,245
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
23,884
Price
$159.53
Value
$3,810,250
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
1,093
Price
$154.45
Value
$168,809
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
9,181
Price
$153.93
Value
$1,413,204
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
6,412
Price
$152.75
Value
$979,433
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
12,236
Price
$151.36
Value
$1,851,980
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
12,648
Price
$150.56
Value
$1,904,333
Open SEC filing

Cho Dennis

See Remarks

Sale 10b5-1
Shares
14,205
Price
$129.75
Value
$1,843,099
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
2,000
Price
$122.58
Value
$245,162
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
6,296
Price
$121.01
Value
$761,860
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
12,917
Price
$119.86
Value
$1,548,206
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
4,500
Price
$119.04
Value
$535,680
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
8,868
Price
$117.70
Value
$1,043,737
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
10,420
Price
$116.82
Value
$1,217,266
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
33,354
Price
$115.90
Value
$3,865,695
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
19,952
Price
$125.08
Value
$2,495,508
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
113,318
Price
$125.16
Value
$14,183,051
Open SEC filing

CHESS ROBERT

Director

Sale 10b5-1
Shares
18,417
Price
$110.89
Value
$2,042,261
Open SEC filing

Cho Dennis

See Remarks

Sale 10b5-1
Shares
14,205
Price
$109.75
Value
$1,558,999
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
18,880
Price
$95.00
Value
$1,793,600
Open SEC filing

Cho Dennis

See Remarks

Sale 10b5-1
Shares
14,205
Price
$89.75
Value
$1,274,899
Open SEC filing

Green Paula

SVP of Human Resources

SaleAlert
Shares
2,028
Price
$82.17
Value
$166,632
Open SEC filing

Green Paula

SVP of Human Resources

SaleAlert
Shares
24,109
Price
$81.62
Value
$1,967,856
Open SEC filing

WERNER ROBERT F.

Chief Accounting Officer

SaleAlert
Shares
1,127
Price
$69.07
Value
$77,842
Open SEC filing

Cho Dennis

See Remarks

Sale 10b5-1
Shares
14,205
Price
$69.75
Value
$990,799
Open SEC filing

Laponis Adam

Chief Financial Officer

Sale 10b5-1
Shares
4,000
Price
$70.00
Value
$280,000
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
6,465
Price
$68.61
Value
$443,590
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
7,623
Price
$67.95
Value
$517,989
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
900
Price
$66.85
Value
$60,163
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
1,482
Price
$65.33
Value
$96,813
Open SEC filing

Starovasnik Melissa A.

Director

Sale 10b5-1
Shares
2,500
Price
$68.00
Value
$170,000
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
1,265
Price
$66.28
Value
$83,846
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
23,752
Price
$65.24
Value
$1,549,561
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
24,282
Price
$65.08
Value
$1,580,246
Open SEC filing

Starovasnik Melissa A.

Director

Sale 10b5-1
Shares
500
Price
$61.04
Value
$30,520
Open SEC filing

JOHANNESSEN JAN

Director

SaleAlert
Shares
12,000
Price
$56.12
Value
$673,440
Open SEC filing

WERNER ROBERT F.

Chief Accounting Officer

SaleAlert
Shares
4,961
Price
$56.88
Value
$282,187
Open SEC filing

Starovasnik Melissa A.

Director

Sale 10b5-1
Shares
500
Price
$61.83
Value
$30,915
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
151
Price
$66.00
Value
$9,966
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
7,910
Price
$65.28
Value
$516,325
Open SEC filing

Leproust Emily M.

Chief Executive Officer

Sale 10b5-1
Shares
1,610
Price
$65.01
Value
$104,666
Open SEC filing

Laponis Adam

Chief Financial Officer

Sale 10b5-1
Shares
4,000
Price
$60.00
Value
$240,000
Open SEC filing

Laponis Adam

Chief Financial Officer

Sale 10b5-1
Shares
3,000
Price
$55.00
Value
$165,000
Open SEC filing

Starovasnik Melissa A.

Director

Sale 10b5-1
Shares
1,000
Price
$51.00
Value
$51,000
Open SEC filing

CHESS ROBERT

Director

Sale 10b5-1
Shares
10,000
Price
$47.00
Value
$470,000
Open SEC filing

Green Paula

SVP of Human Resources

SaleAlert
Shares
39,404
Price
$52.40
Value
$2,064,770
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
3,541
Price
$53.11
Value
$188,063
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
26,952
Price
$52.69
Value
$1,419,993
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
16,616
Price
$51.42
Value
$854,445
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
21,858
Price
$50.32
Value
$1,099,916
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
1,750
Price
$50.04
Value
$87,572
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
3,500
Price
$50.23
Value
$175,788
Open SEC filing

Laponis Adam

Chief Financial Officer

Sale 10b5-1
Shares
7,000
Price
$50.00
Value
$350,000
Open SEC filing

Cho Dennis

See Remarks

Sale 10b5-1
Shares
5,000
Price
$49.93
Value
$249,650
Open SEC filing

WERNER ROBERT F.

Chief Accounting Officer

SaleAlert
Shares
7,000
Price
$45.65
Value
$319,536
Open SEC filing

Laponis Adam

Chief Financial Officer

Sale 10b5-1
Shares
3,000
Price
$40.00
Value
$120,000
Open SEC filing

Finn Patrick John

President and COO

Sale 10b5-1
Shares
23,279
Price
$40.00
Value
$931,160
Open SEC filing

JOHANNESSEN JAN

Director

SaleAlert
Shares
7,044
Price
$24.77
Value
$174,480
Open SEC filing

Laponis Adam

Chief Financial Officer

Sale 10b5-1
Shares
3,000
Price
$31.15
Value
$93,450
Open SEC filing

“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.