MarketPeel
Insider Trading Intelligence
RW

Roald Graham Webster

ALGM
VP, CHIEF ACCOUNTING OFFICER · ALLEGRO MICROSYSTEMS, INC. · CIK 0001970184
FILING MIX · LIFETIME64%/36%
BUYS
9
SELLS
5
TOTAL VALUE
$918.4K
COMPANIES
1
ACTIVE SINCE
May 2023
HOLDINGS NOW
13,106
AVG SELL PX
$35.57
TRADE KIND
SHOWING 14 / 14
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 2 pending
Forward-return performance of every backtestable P/S trade by Roald Graham Webster, 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
7d1+100.00%-3.98%-0.04%-3.94%-3.94%
14d1+100.00%-4.86%+0.30%-5.15%-5.15%
30d1+100.00%-2.21%+3.34%-5.55%-5.55%
60d1+100.00%-3.36%+4.03%-7.39%-7.39%
90d1+100.00%-29.04%+1.12%-30.16%-30.16%
180d1+0.00%+20.11%+6.35%+13.76%+13.76%
1y1(1 pending)
2y1(1 pending)
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
ALGM · 13,106 shares · as of May 21, 2026
07,62915,25722,88630,514202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 9 buys / 5 sellsCOVERAGE · 13 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ALGM
ALLEGRO MICROSYSTEMS, INC.
SALE
VP, Chief Accounting Officer
5,217$44.89$234.2K13,106May 21, 2026May 22, 2026View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
SALE
VP, Chief Accounting Officer
4,277$43.10$184.3K18,323May 16, 2026May 19, 2026View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
PURCHASEGRANT
Stock grant
54422,600May 13, 2026May 15, 2026View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
PURCHASEGRANT
Stock grant
4,75622,056May 13, 2026May 15, 2026View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
SALE
VP, Chief Accounting Officer
8,266$32.81$271.2K17,300Aug 22, 2025Aug 25, 2025View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
SALE
VP, Chief Accounting Officer
4,948$27.51$136.1K25,566May 16, 2025May 19, 2025View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
PURCHASEGRANT
Stock grant
9,76530,514May 15, 2025May 19, 2025View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
PURCHASEGRANT
Stock grant
1,00220,749May 13, 2025May 14, 2025View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
PURCHASEGRANT
Stock grant
5,52019,747Jun 11, 2024Jun 13, 2024View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
SALE
SVP, CAO
3,113$29.75$92.6K14,227May 16, 2024May 17, 2024View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
PURCHASEGRANT
Stock grant
5,01717,340May 15, 2024May 17, 2024View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
PURCHASEGRANT
Stock grant
78712,323May 15, 2024May 17, 2024View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
PURCHASEGRANT
Stock grant
7,91011,536May 15, 2023May 17, 2023View →
ALGM
ALLEGRO MICROSYSTEMS, INC.
PURCHASEGRANT
Stock grant
3,6263,626May 15, 2023May 17, 2023View →
Other insiders · ALGM
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About this filer
CIK 0001970184
ROLE
VP, Chief Accounting Officer
PRIMARY
ALGM
COMPANIES
1
ACTIVE SINCE
May 2023
MARKETPEEL · /INSIDER/0001970184DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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