MarketPeel
Insider Trading Intelligence
JS

John W. Smither

NAMS
DIRECTOR · NEWAMSTERDAM PHARMA CO N.V. · CIK 0001559583
FILING MIX · LIFETIME55%/45%
BUYS
31
SELLS
25
TOTAL VALUE
$727.4K
COMPANIES
3
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
101,763
AVG SELL PX
$21.09
TRADE KIND
SHOWING 56 / 56
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
16 backtested trades · 8 horizonsHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by John W. Smither, 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
7d16+56.25%-3.35%+1.21%-4.56%-3.64%
14d16+56.25%-3.13%+1.84%-4.97%-9.14%
30d16+75.00%-12.04%+2.34%-14.39%-11.52%
60d16+50.00%-8.65%+6.02%-14.67%-23.24%
90d16+75.00%-11.05%+8.97%-20.02%-20.10%
180d16+87.50%-24.91%+16.05%-40.96%-43.00%
1y16+87.50%-45.01%+20.59%-65.60%-66.51%
2y16+100.00%-44.64%+11.51%-63.60%-59.13%
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
NAMS · 10,360 shares · as of Jan 7, 2026
08,12516,25024,37532,500202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
FLOW · 31 buys / 25 sellsCOVERAGE · 27 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GNLX
GENELUX CORP
SALE
12,000$2.91$34.9K91,403Jul 1, 2026Jul 2, 2026View →
GNLX
GENELUX CORP
PURCHASEGRANT
Stock grant
28,409103,403Jun 16, 2026Jun 18, 2026View →
GNLX
GENELUX CORP
PURCHASEGRANT
Stock grant
31,56631,566Jun 16, 2026Jun 18, 2026View →
NAMS
NEWAMSTERDAM PHARMA CO N.V.
PURCHASEGRANT
Stock grant
15,30015,300Jan 7, 2026Jan 9, 2026View →
NAMS
NEWAMSTERDAM PHARMA CO N.V.
PURCHASEGRANT
Stock grant
3,40010,360Jan 7, 2026Jan 9, 2026View →
GNLX
GENELUX CORP
PURCHASEGRANT
Stock grant
28,57628,576Aug 27, 2025Aug 29, 2025View →
GNLX
GENELUX CORP
PURCHASEGRANT
Stock grant
22,28374,994Aug 27, 2025Aug 29, 2025View →
NAMS
NEWAMSTERDAM PHARMA CO N.V.
PURCHASEGRANT
Stock grant
6,9606,960Jan 7, 2025Jan 8, 2025View →
NAMS
NEWAMSTERDAM PHARMA CO N.V.
PURCHASEGRANT
Stock grant
32,50032,500Jan 6, 2025Jan 8, 2025View →
GNLX
GENELUX CORP
PURCHASEGRANT
Stock grant
50,46950,469Aug 1, 2024Dec 31, 2024View →
GNLX
GENELUX CORP
PURCHASEGRANT
Stock grant
39,54152,711Aug 1, 2024Aug 5, 2024View →
GNLX
GENELUX CORP
PURCHASEGRANT
Stock grant
50,46950,469Aug 1, 2024Aug 5, 2024View →
GNLX
GENELUX CORP
PURCHASE
6,2506,250May 29, 2024Jun 7, 2024View →
GNLX
GENELUX CORP
PURCHASE
6,25013,170May 29, 2024Jun 7, 2024View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
2,7932,793Feb 13, 2024Feb 15, 2024View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
8,3790Feb 13, 2024Feb 15, 2024View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
8,57211,365Feb 13, 2024Feb 15, 2024View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
25,7180Feb 13, 2024Feb 15, 2024View →
NAMS
NEWAMSTERDAM PHARMA CO N.V.
PURCHASEGRANT
Stock grant
10,00010,000Jan 1, 2024Jan 3, 2024View →
GNLX
GENELUX CORP
SALE
900$20.78$18.7K6,920Sep 13, 2023Sep 14, 2023View →
GNLX
GENELUX CORP
PURCHASEGRANT
Stock grant
8,4478,447Sep 11, 2023Sep 13, 2023View →
GNLX
GENELUX CORP
PURCHASEGRANT
Stock grant
6,9207,820Sep 11, 2023Sep 13, 2023View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
125,000125,000Aug 31, 2023Sep 5, 2023View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
1,250$32.90$41.1K86,715Mar 10, 2021Mar 11, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
500$32.90$16.4K46,321Mar 10, 2021Mar 11, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASE
Chief Financial Officer
500$1.68$84046,821Mar 10, 2021Mar 11, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
50044,982Mar 10, 2021Mar 11, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
12,39697,684Mar 4, 2021Mar 5, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASE
Chief Financial Officer
12,396$1.68$20.8K46,321Mar 4, 2021Mar 5, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
9,50033,925Mar 3, 2021Mar 5, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
28,80028,800Mar 3, 2021Mar 5, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
773$34.20$26.4K24,425Mar 1, 2021Mar 3, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASE
Chief Financial Officer
750$1.68$1.3K25,948Feb 10, 2021Feb 12, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
75045,482Feb 10, 2021Feb 12, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
2,000$35.64$71.3K87,965Feb 10, 2021Feb 12, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
750$35.64$26.7K25,198Feb 10, 2021Feb 12, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
1,250$35.00$43.8K25,198Feb 1, 2021Feb 3, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
3,750$35.00$131.3K89,965Feb 1, 2021Feb 3, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASE
Chief Financial Officer
1,250$1.68$2.1K26,448Feb 1, 2021Feb 3, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
1,25046,232Feb 1, 2021Feb 3, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASE
Chief Financial Officer
500$1.68$84025,698Jan 19, 2021Jan 21, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
500$30.00$15.0K25,198Jan 19, 2021Jan 21, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
1,250$30.00$37.5K93,715Jan 19, 2021Jan 21, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
50047,482Jan 19, 2021Jan 21, 2021View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
3,750$30.00$112.5K94,965Dec 14, 2020Dec 16, 2020View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASE
Chief Financial Officer
1,500$1.68$2.5K26,698Dec 14, 2020Dec 16, 2020View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
1,500$30.00$45.0K25,198Dec 14, 2020Dec 16, 2020View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
1,50047,982Dec 14, 2020Dec 16, 2020View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
1,250$30.00$37.5K98,715Sep 29, 2020Oct 1, 2020View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASE
Chief Financial Officer
500$1.68$84024,375Sep 29, 2020Oct 1, 2020View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
500$30.00$15.0K23,875Sep 29, 2020Oct 1, 2020View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
50049,482Sep 29, 2020Oct 1, 2020View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
SALE
Chief Financial Officer
14,875110,080Jun 11, 2020Jun 15, 2020View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASE
Chief Financial Officer
14,875$1.68$25.0K123,840Jun 11, 2020Jun 15, 2020View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
12,00012,000Feb 27, 2020Mar 3, 2020View →
ARQT
ARCUTIS BIOTHERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
9,000108,965Feb 27, 2020Mar 3, 2020View →
Other insiders · NAMS
Loading peer insiders…
About this filer
CIK 0001559583
ROLE
Director
PRIMARY
NAMS
COMPANIES
3
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001559583DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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

Feedback