MarketPeel
Insider Trading Intelligence
MC

Michael Andrew Chambers

SRPT
DIRECTOR · SAREPTA THERAPEUTICS, INC. · CIK 0001932527
FILING MIX · LIFETIME96%/4%
BUYS
25
SELLS
1
TOTAL VALUE
$23.27M
COMPANIES
1
ACTIVE SINCE
Jun 2022
HOLDINGS NOW
27,535
AVG SELL PX
TRADE KIND
SHOWING 26 / 26
Trades · vs SPY
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Performance · forward returns vs SPY
14 backtested trades · 8 horizons · 3 pending
Forward-return performance of every backtestable P/S trade by Michael Andrew Chambers, 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+100.00%+3.61%-2.01%+5.61%+6.36%
14d14+100.00%+4.57%-2.57%+7.14%+7.89%
30d14+78.57%+4.82%-2.71%+7.52%+13.21%
60d14+78.57%+4.97%-1.72%+6.69%+8.30%
90d14+35.71%-11.77%+0.47%-12.24%-22.28%
180d14+78.57%+12.60%+6.78%+5.83%+7.63%
1y14+78.57%-7.24%+17.14%-24.38%-4.31%
2y14(3 pending)+45.45%-35.76%+44.82%-80.58%-129.07%
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
SRPT · 27,535 shares · as of Jun 4, 2026
071,009142,017213,026284,0342023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 25 buys / 1 sellsCOVERAGE · 17 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
16,87527,535Jun 4, 2026Jun 5, 2026View →
SRPT
SAREPTA THERAPEUTICS, INC.
SALE
Dec 18, 2025Dec 19, 2025View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
Dec 18, 2025Dec 19, 2025View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
4,7924,792Mar 10, 2025Mar 11, 2025View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
2,38310,660Mar 10, 2025Mar 11, 2025View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
5,648$134.66$760.6K284,034Aug 16, 2024Aug 20, 2024View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
13,106$133.07$1.74M260,102Aug 16, 2024Aug 20, 2024View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
18,284$134.06$2.45M278,386Aug 16, 2024Aug 20, 2024View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
1,8468,277Mar 1, 2024Mar 5, 2024View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
3,6793,679Mar 1, 2024Mar 5, 2024View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
4,032$109.89$443.1K246,996Aug 14, 2023Aug 15, 2023View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
5,947$109.19$649.4K242,964Aug 14, 2023Aug 15, 2023View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
23,686$108.05$2.56M237,017Aug 11, 2023Aug 14, 2023View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
31,570$106.26$3.35M213,331Aug 10, 2023Aug 11, 2023View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
1,091$105.90$115.5K181,761Aug 10, 2023Aug 11, 2023View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
2,206$104.67$230.9K180,670Aug 10, 2023Aug 11, 2023View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
1,5236,431Mar 6, 2023Mar 8, 2023View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
3,2573,257Mar 6, 2023Mar 8, 2023View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
6,250$105.16$657.3K108,178Sep 14, 2022Sep 15, 2022View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
20,744$103.87$2.15M71,822Sep 14, 2022Sep 15, 2022View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
30,106$104.67$3.15M101,928Sep 14, 2022Sep 15, 2022View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
$20,000,000.00Sep 13, 2022Sep 14, 2022View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
40,110$108.20$4.34M45,018Aug 19, 2022Aug 22, 2022View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASE
6,060$108.80$659.3K51,078Aug 19, 2022Aug 22, 2022View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
8,3298,329Jun 2, 2022Jun 6, 2022View →
SRPT
SAREPTA THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
4,9084,908Jun 2, 2022Jun 6, 2022View →
Other insiders · SRPT
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About this filer
CIK 0001932527
ROLE
Director
PRIMARY
SRPT
COMPANIES
1
ACTIVE SINCE
Jun 2022
MARKETPEEL · /INSIDER/0001932527DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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