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Robert F. Werner

TWST
CHIEF ACCOUNTING OFFICER · TWIST BIOSCIENCE CORP · CIK 0001590947
FILING MIX · LIFETIME14%/86%
BUYS
7
SELLS
44
TOTAL VALUE
$1.59M
COMPANIES
1
ACTIVE SINCE
May 2023
HOLDINGS NOW
47,954
AVG SELL PX
$44.67
TRADE KIND
SHOWING 51 / 51
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
35 backtested trades · 8 horizons · 56 pending
Forward-return performance of every backtestable P/S trade by Robert F. Werner, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d35+65.71%-0.70%+0.80%-1.50%-2.93%-1.29
14d35+51.43%+1.02%+0.93%+0.01%-1.74%0.01
30d35+34.29%+5.81%+1.22%+4.03%+4.66%1.87
60d35(1 pending)+23.53%+13.46%+2.22%+11.24%+9.33%3.25
90d35(2 pending)+42.42%+10.15%+4.16%+4.21%-0.24%0.81
180d35(6 pending)+48.28%+20.61%+8.18%+9.57%-8.08%—
1y35(16 pending)+57.89%+4.94%+18.01%-13.07%-27.89%—
2y35(31 pending)+0.00%+33.56%+39.71%-6.15%-6.59%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
TWST · 47,954 shares · as of Jun 8, 2026
016,79933,59750,39667,194202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 7 buys / 44 sellsCOVERAGE · 13 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
1,127$69.07$77.8K46,827Jun 8, 2026Jun 10, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALEGRANT
Gift
500——46,327Jun 8, 2026Jun 10, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
232$69.84$16.2K47,954Jun 8, 2026Jun 10, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
800$62.48$50.0K48,186May 26, 2026May 28, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
688$53.26$36.6K48,986May 21, 2026May 26, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
4,961$56.88$282.2K49,674May 8, 2026May 12, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
164$57.15$9.4K54,635May 4, 2026May 6, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
246$46.43$11.4K54,799Mar 6, 2026Mar 10, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
1,693$46.71$79.1K55,045Feb 23, 2026Feb 25, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALEGRANT
Gift
2,000——56,738Feb 9, 2026Feb 11, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
7,000$45.65$319.5K58,738Feb 4, 2026Feb 5, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
175$46.58$8.2K65,738Feb 3, 2026Feb 5, 2026 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
230$32.88$7.6K65,913Dec 8, 2025Dec 10, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
822$28.71$23.6K66,143Nov 24, 2025Nov 25, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
229$26.50$6.1K66,965Nov 21, 2025Nov 25, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
PURCHASEGRANT
Stock grant
16,324——67,194Nov 18, 2025Nov 20, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
160$32.08$5.1K50,870Nov 3, 2025Nov 5, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
1,016$31.44$31.9K51,030Oct 30, 2025Nov 3, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
PURCHASEGRANT
Stock grant
5,633——52,046Oct 28, 2025Oct 30, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
2,041$32.19$65.7K46,413Oct 6, 2025Oct 8, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
235$25.76$6.1K48,454Sep 8, 2025Sep 10, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
853$27.69$23.6K48,689Aug 25, 2025Aug 27, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
238$25.96$6.2K49,542Aug 21, 2025Aug 25, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
186$28.36$5.3K49,780Aug 4, 2025Aug 6, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
225$31.75$7.1K49,966Jun 6, 2025Jun 10, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
839$27.73$23.3K50,191May 23, 2025May 28, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
242$29.75$7.2K51,030May 21, 2025May 23, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
162$37.65$6.1K51,272May 5, 2025May 7, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
241$40.91$9.9K51,434Mar 6, 2025Mar 10, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
916$41.71$38.2K51,675Feb 24, 2025Feb 25, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
267$44.18$11.8K52,591Feb 21, 2025Feb 25, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
185$49.35$9.1K52,858Feb 3, 2025Feb 5, 2025 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
226$52.70$11.9K53,043Dec 6, 2024Dec 10, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
PURCHASEGRANT
Stock grant
8,438——53,269Dec 4, 2024Dec 6, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
789$44.20$34.9K44,831Nov 25, 2024Nov 27, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
1,448$44.61$64.6K45,620Nov 6, 2024Nov 15, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
1,448$44.61$64.6K45,620Nov 6, 2024Nov 8, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
156$41.56$6.5K47,068Nov 4, 2024Nov 6, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
PURCHASEGRANT
Stock grant
8,500——47,224Nov 4, 2024Nov 6, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
240$39.16$9.4K38,724Sep 6, 2024Sep 10, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
813$43.14$35.1K38,964Aug 23, 2024Aug 27, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
168$39.93$6.7K39,777Aug 5, 2024Aug 7, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
242$51.33$12.4K39,945Jun 6, 2024Jun 10, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
3,361$42.32$142.2K40,187May 23, 2024May 28, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
132$37.13$4.9K43,548May 3, 2024May 7, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
181$37.43$6.8K43,680Mar 6, 2024Mar 8, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
121$36.59$4.4K43,861Feb 2, 2024Feb 6, 2024 ↗View →
TWST
TWIST BIOSCIENCE CORP
SALE
Chief Accounting Officer
151$24.67$3.7K43,982Dec 5, 2023Dec 7, 2023 ↗View →
TWST
TWIST BIOSCIENCE CORP
PURCHASEGRANT
Stock grant
5,633——44,133Nov 2, 2023Nov 6, 2023 ↗View →
TWST
TWIST BIOSCIENCE CORP
PURCHASEGRANT
Stock grant
8,500——38,500Sep 5, 2023Sep 7, 2023 ↗View →
TWST
TWIST BIOSCIENCE CORP
PURCHASEGRANT
Stock grant
30,000——30,000May 22, 2023May 24, 2023 ↗View →
Other insiders · TWST
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About this filer
CIK 0001590947
ROLE
Chief Accounting Officer
PRIMARY
TWST
COMPANIES
1
ACTIVE SINCE
May 2023
MARKETPEEL · /INSIDER/0001590947DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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