Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 25 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

25 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
July 20, 2020 MGTX S 10b5-1 6,667 $15.00 $100,005 157,476 Indirect -4.06% Disposed -28.1% (price as of 2026-10-02)
May 11, 2020 MGTX S 10b5-1 2,184 $15.00 $32,760 164,143 Indirect -1.31% Disposed -28.1% (price as of 2026-10-02)
April 20, 2020 MGTX S 10b5-1 4,482 $15.00 $67,230 166,327 Indirect -2.62% Disposed -28.1% (price as of 2026-10-02)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
June 11, 2026 MGTX Restricted Share Units Ordinary Shares (69,662) · · 69,662 Acquired
June 12, 2025 MGTX Restricted Share Units Ordinary Shares (45,000) · · 45,000 Acquired
June 6, 2024 MGTX Restricted Share Units Ordinary Shares (45,000) · · 45,000 Acquired
June 8, 2023 MGTX Stock Option (right to buy) Ordinary Shares (20,000) $8.04 June 8, 2033 20,000 Acquired
June 8, 2023 MGTX Restricted Share Units Ordinary Shares (20,000) · · 20,000 Acquired
June 7, 2022 MGTX Stock Option (right to buy) Ordinary Shares (15,000) $8.25 June 7, 2032 15,000 Acquired
June 7, 2022 MGTX Restricted Share Units Ordinary Shares (15,000) · · 15,000 Acquired
June 10, 2021 MGTX Stock Option (right to buy) Ordinary Shares (15,000) $14.88 June 9, 2031 15,000 Acquired
June 10, 2021 MGTX Restricted Share Units Ordinary Shares (15,000) · · 15,000 Acquired
June 2, 2020 MGTX Stock Option (right to buy) Ordinary Shares (25,000) $13.85 June 1, 2030 25,000 Acquired
June 19, 2019 MGTX Stock Option (right to buy) Ordinary Shares (25,000) $21.28 June 19, 2029 25,000 Acquired
May 27, 2011 MRK Phantom Stock Common Stock (4,143) · · 4,143 Acquired
Aug. 4, 2010 MRK Stock Option (right to buy) Common Stock (5,000) $35.19 Aug. 3, 2020 5,000 Acquired
May 28, 2010 MRK Phantom Stock Common Stock (1,633) · · 1,633 Acquired
Nov. 3, 2009 MRK Stock Option (right to buy) Common Stock (5,000) $24.30 April 30, 2019 5,000 Acquired
Nov. 3, 2009 MRK Stock Option (right to buy) Common Stock (5,000) $38.04 April 29, 2018 5,000 Acquired
Nov. 3, 2009 MRK Stock Option (right to buy) Common Stock (5,000) $51.86 April 26, 2017 5,000 Acquired
Nov. 3, 2009 MRK Stock Option (right to buy) Common Stock (5,000) $34.44 April 27, 2016 5,000 Acquired
Nov. 3, 2009 MRK Stock Option (right to buy) Common Stock (5,000) $33.83 April 28, 2015 5,000 Acquired
Nov. 3, 2009 MRK Stock Option (right to buy) Common Stock (5,275) $71.30 April 26, 2011 5,275 Acquired
Nov. 3, 2009 MRK Stock Option (right to buy) Common Stock (5,000) $47.23 April 29, 2014 5,000 Acquired
Nov. 3, 2009 MRK Stock Option (right to buy) Common Stock (5,275) $53.84 April 27, 2013 5,275 Acquired
Nov. 3, 2009 MRK Stock Option (right to buy) Common Stock (5,275) $51.60 April 25, 2012 5,275 Acquired
Nov. 3, 2009 MRK Phantom Stock Common Stock (9,993) · · 9,993 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 3 holdings

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
June 8, 2018 MGTX Ordinary Shares 170,809 Indirect
June 8, 2018 MGTX Stock Option→ Ordinary Shares (19,324) 19,324 Direct
June 8, 2018 MGTX Stock Option→ Ordinary Shares (23,189) 23,189 Direct