MarketPeel
Insider Trading Intelligence
MM

Melissa Mclaughlin

ALNY
CHIEF HUMAN RESOURCES OFFICER · ALNYLAM PHARMACEUTICALS, INC. · CIK 0002127187
FILING MIX · LIFETIME0%/100%
BUYS
0
SELLS
14
TOTAL VALUE
$1.27M
COMPANIES
1
ACTIVE SINCE
Apr 2026
HOLDINGS NOW
9,935
AVG SELL PX
$325.92
TRADE KIND
SHOWING 14 / 14
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
14 backtested trades · 8 horizons · 70 pending
Forward-return performance of every backtestable P/S trade by Melissa Mclaughlin, 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
7d14+0.00%+0.78%+3.83%-3.06%-2.91%
14d14+35.71%-1.84%+7.19%-9.03%-6.59%
30d14+100.00%-7.54%+10.41%-17.95%-17.02%
60d14(14 pending)
90d14(14 pending)
180d14(14 pending)
1y14(14 pending)
2y14(14 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
ALNY · 9,935 shares · as of Apr 6, 2026
03,2726,5449,81613,088SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2026
FLOW · 0 buys / 14 sellsCOVERAGE · 1 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILED
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
199$333.94$66.5K9,443Apr 6, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
293$331.89$97.2K9,642Apr 6, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
909$329.76$299.8K10,764Apr 6, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
56$320.14$17.9K11,673Apr 6, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
829$330.46$274.0K9,935Apr 6, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
147$320.62$47.1K12,287Apr 2, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
86$319.69$27.5K12,434Apr 2, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
359$317.44$114.0K12,729Apr 2, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
209$318.47$66.6K12,520Apr 2, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
81$323.64$26.2K11,737Apr 2, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
265$316.61$83.9K13,088Apr 2, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
245$322.86$79.1K11,818Apr 2, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
8$325.49$2.6K11,729Apr 2, 2026Apr 7, 2026
ALNY
ALNYLAM PHARMACEUTICALS, INC.
SALE10b5-1
10b5-1 plan
224$321.64$72.0K12,063Apr 2, 2026Apr 7, 2026
Other insiders · ALNY
Loading peer insiders…
About this filer
CIK 0002127187
ROLE
Chief Human Resources Officer
PRIMARY
ALNY
COMPANIES
1
ACTIVE SINCE
Apr 2026
MARKETPEEL · /INSIDER/0002127187DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback