MarketPeel
Insider Trading Intelligence
SN

Stuart Naylor

MGTX
CHIEF DEVELOPMENT OFFICER · MEIRAGTX HOLDINGS PLC · CIK 0001742771
FILING MIX · LIFETIME31%/69%
BUYS
22
SELLS
49
TOTAL VALUE
$4.27M
COMPANIES
1
ACTIVE SINCE
Jan 2020
HOLDINGS NOW
70,000
AVG SELL PX
$10.82
TRADE KIND
SHOWING 71 / 71
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
24 backtested trades · 8 horizons · 4 pending
Forward-return performance of every backtestable P/S trade by Stuart Naylor, 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
7d24+54.17%-0.90%+0.22%-1.11%-0.60%
14d24+58.33%-5.16%-0.09%-5.08%-7.13%
30d24+62.50%-9.68%-0.59%-9.09%-8.89%
60d24+58.33%-2.98%+2.73%-5.72%-5.02%
90d24(1 pending)+65.22%-4.64%+5.31%-9.95%-8.50%
180d24(1 pending)+52.17%+6.92%+12.37%-5.45%-14.84%
1y24(1 pending)+56.52%-8.41%+17.76%-26.18%-31.34%
2y24(1 pending)+95.65%-48.35%+15.69%-64.03%-64.58%
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
MGTX · 70,000 shares · as of Jun 25, 2026
0179,542359,083538,625718,166202120222023202420252026SHARES 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
FLOW · 22 buys / 49 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
70,00070,000Jun 25, 2026Jun 29, 2026View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE10b5-1
10b5-1 plan
27,661$9.36$258.9K668,505Apr 7, 2026Apr 7, 2026View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
11,750$7.45$87.5K696,166Feb 21, 2026Feb 23, 2026View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
25,00025,000Feb 21, 2026Feb 23, 2026View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
CHIEF DEV. OFFICER
25,000707,916Feb 21, 2026Feb 23, 2026View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
CHIEF DEV. OFFICER
75,000718,166Jan 17, 2026Jan 21, 2026View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
35,250$7.42$261.6K682,916Jan 17, 2026Jan 21, 2026View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
75,00075,000Jan 17, 2026Jan 21, 2026View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
17,625$7.73$136.2K643,166Jan 7, 2026Jan 8, 2026View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
37,5000Jan 7, 2026Jan 8, 2026View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
CHIEF DEV. OFFICER
37,500660,791Jan 7, 2026Jan 8, 2026View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
100,000100,000Apr 3, 2025Apr 7, 2025View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
50,00050,000Feb 21, 2025Feb 25, 2025View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
CHIEF DEV. OFFICER
50,000646,791Feb 21, 2025Feb 25, 2025View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
23,500$7.30$171.6K623,291Feb 21, 2025Feb 25, 2025View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
11,163$5.77$64.4K596,791Jan 14, 2025Jan 16, 2025View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
CHIEF DEV. OFFICER
23,750607,954Jan 14, 2025Jan 16, 2025View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
23,7500Jan 14, 2025Jan 16, 2025View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
CHIEF DEV. OFFICER
37,500601,829Jan 7, 2025Jan 10, 2025View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
37,50037,500Jan 7, 2025Jan 10, 2025View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
17,625$6.34$111.7K584,204Jan 7, 2025Jan 10, 2025View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
150,000150,000Jan 17, 2024Jan 17, 2024View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
23,75023,750Jan 14, 2024Jan 17, 2024View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
11,163$6.36$71.0K564,329Jan 14, 2024Jan 17, 2024View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
CHIEF DEV. OFFICER
23,750575,492Jan 14, 2024Jan 17, 2024View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
CHIEF DEV. OFFICER
40,000570,542Jan 8, 2024Jan 9, 2024View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
18,800$6.63$124.6K551,742Jan 8, 2024Jan 9, 2024View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
40,0000Jan 8, 2024Jan 9, 2024View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
CHIEF DEV. OFFICER
75,000565,792Jan 7, 2024Jan 9, 2024View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
75,00075,000Jan 7, 2024Jan 9, 2024View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
35,250$6.30$222.1K530,542Jan 7, 2024Jan 9, 2024View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
100,000100,000Feb 21, 2023Feb 23, 2023View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
100,000100,000Feb 21, 2023Feb 23, 2023View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
CHIEF DEV. OFFICER
47,500513,117Jan 14, 2023Jan 18, 2023View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
47,50047,500Jan 14, 2023Jan 18, 2023View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
22,325$6.99$156.1K490,792Jan 14, 2023Jan 18, 2023View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
CHIEF DEV. OFFICER
40,000484,417Jan 8, 2023Jan 10, 2023View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
40,00040,000Jan 8, 2023Jan 10, 2023View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
CHIEF DEV. OFFICER
18,800$6.60$124.1K465,617Jan 8, 2023Jan 10, 2023View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
Chief Development Officer
80,000482,017Jan 8, 2022Jan 11, 2022View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
80,00080,000Jan 8, 2022Jan 11, 2022View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
37,600$21.53$809.5K444,417Jan 8, 2022Jan 11, 2022View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
150,000150,000Jan 7, 2022Jan 11, 2022View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
12,000$17.95$215.4K402,017Oct 18, 2021Oct 20, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
9,390$15.06$141.4K414,017Jul 20, 2021Jul 21, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
2,610$15.04$39.3K423,407Jul 13, 2021Jul 15, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
5,040$15.01$75.7K426,017Jun 8, 2021Jun 9, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
1,042$15.02$15.7K431,057Jun 7, 2021Jun 9, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASE
Chief Development Officer
741$15.01$11.1K432,099Apr 30, 2021Apr 30, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
741$15.01$11.1K432,099Apr 30, 2021Apr 30, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
1,405$15.02$21.1K432,840Apr 29, 2021Apr 30, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
1,405$15.02$21.1K432,840Apr 29, 2021Apr 30, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
3,772$15.14$57.1K434,245Apr 28, 2021Apr 30, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
3,772$15.14$57.1K434,245Apr 28, 2021Apr 30, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
95,00095,000Jan 14, 2021Jan 19, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
35,00035,000Jan 14, 2021Jan 19, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
6,000$15.34$92.0K438,017Jan 5, 2021Jan 6, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
6,000$15.40$92.4K444,017Jan 4, 2021Jan 6, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
4,851$15.00$72.8K450,017Nov 10, 2020Jan 6, 2021View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
3,739$15.00$56.1K451,129Nov 10, 2020Nov 12, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
512$15.00$7.7K454,868Nov 9, 2020Nov 9, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
8,282$15.02$124.4K455,380Nov 5, 2020Nov 9, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
301$15.00$4.5K463,662Oct 5, 2020Oct 7, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
7,698$15.04$115.8K463,963Jul 21, 2020Jul 22, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
2,356$15.00$35.3K471,661Jul 20, 2020Jul 22, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
11,304$15.39$174.0K474,017May 11, 2020May 13, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
696$15.00$10.4K485,321Apr 20, 2020Apr 22, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
6,000$17.60$105.6K486,017Feb 19, 2020Feb 20, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
5,831$18.30$106.7K492,186Feb 18, 2020Feb 20, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
SALE
Chief Development Officer
169$18.96$3.2K492,017Feb 18, 2020Feb 20, 2020View →
MGTX
MEIRAGTX HOLDINGS PLC
PURCHASEGRANT
Stock grant
160,000160,000Jan 8, 2020Jan 10, 2020View →
Other insiders · MGTX
Loading peer insiders…
About this filer
CIK 0001742771
ROLE
Chief Development Officer
PRIMARY
MGTX
COMPANIES
1
ACTIVE SINCE
Jan 2020
MARKETPEEL · /INSIDER/0001742771DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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