MarketPeel
Insider Trading Intelligence
SL

Samsara Biocapital Gp, Llc

MLYS
10% OWNER · MINERALYS THERAPEUTICS, INC. · CIK 0001888829
FILING MIX · LIFETIME86%/14%
BUYS
12
SELLS
2
TOTAL VALUE
$38.04M
COMPANIES
5
ACTIVE SINCE
Oct 2023
HOLDINGS NOW
14,402,373
AVG SELL PX
TRADE KIND
SHOWING 14 / 14
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
7 backtested trades · 8 horizons · 6 pending
Forward-return performance of every backtestable P/S trade by Samsara Biocapital Gp, Llc, 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
7d7+14.29%-11.48%-0.03%-11.46%-17.40%
14d7+28.57%-2.42%-0.21%-2.21%-12.15%
30d7+14.29%-2.63%+1.45%-4.08%-10.76%
60d7+14.29%-11.19%+2.50%-13.70%-45.51%
90d7+14.29%-13.58%+1.55%-15.14%-37.98%
180d7+14.29%-23.53%+3.54%-27.07%-32.72%
1y7(1 pending)+16.67%+20.60%+18.78%+1.83%-35.76%
2y7(5 pending)+100.00%+197.28%+47.95%+149.32%+149.32%
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
MLYS · 5,674,916 shares · as of Mar 13, 2025
01,418,7292,837,4584,256,1875,674,9162025SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 12 buys / 2 sellsCOVERAGE · 11 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
KLRS
KALARIS THERAPEUTICS, INC.
PURCHASE
14,93714,937May 20, 2026May 22, 2026View →
KLRS
KALARIS THERAPEUTICS, INC.
PURCHASE
4,47119,408May 20, 2026May 22, 2026View →
KLRS
KALARIS THERAPEUTICS, INC.
PURCHASE
244,300$4.83$1.18M2,224,147May 20, 2026May 22, 2026View →
KLRS
KALARIS THERAPEUTICS, INC.
SALE
66,90610,657,028May 20, 2026May 22, 2026View →
KLRS
KALARIS THERAPEUTICS, INC.
PURCHASE
479,847$10.42$5.00M1,979,847Dec 18, 2025Feb 17, 2026View →
MLYS
MINERALYS THERAPEUTICS, INC.
PURCHASE
600,000$13.50$8.10M5,674,916Mar 13, 2025Mar 17, 2025View →
NGNE
NEUROGENE INC.
PURCHASE
20,748$24.91$516.8K1,689,105Nov 26, 2024Nov 27, 2024View →
NGNE
NEUROGENE INC.
PURCHASE
15,219$26.73$406.8K1,715,127Nov 26, 2024Nov 27, 2024View →
NGNE
NEUROGENE INC.
PURCHASE
10,803$26.01$281.0K1,699,908Nov 26, 2024Nov 27, 2024View →
NGNE
NEUROGENE INC.
PURCHASE
2,000$27.50$55.0K1,717,127Nov 26, 2024Nov 27, 2024View →
VTVT
VTV THERAPEUTICS INC.
PURCHASEGRANT
Stock grant
58,885892,578Mar 5, 2024Dec 6, 2024View →
VTVT
VTV THERAPEUTICS INC.
SALE
58,836206,784Mar 5, 2024Dec 6, 2024View →
MLYS
MINERALYS THERAPEUTICS, INC.
PURCHASE
555,555$13.50$7.50M5,074,916Feb 12, 2024Feb 14, 2024View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASE
2,189,781$6.85$15.00M6,788,609Oct 16, 2023Oct 18, 2023View →
Other insiders · MLYS
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About this filer
CIK 0001888829
ROLE
10% Owner
PRIMARY
MLYS
COMPANIES
5
ACTIVE SINCE
Oct 2023
MARKETPEEL · /INSIDER/0001888829DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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