Updated Jul 16, 2026 · Last SEC filing 2026-07-08
MeiraGTx Holdings plc (MGTX) has filed 20 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-08. 4 Form 8-K material event filings were reported by MGTX in the last 90 days. 3 Form 144 notices of proposed sale were filed for MGTX stock. InsiderAlpha tracks every MGTX SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Biological Products, (No Diagnostic Substances) (SIC 2836) |
|---|---|
| SEC CIK | 0001735438 |
| Form 4 filings (90d) | 20 |
|---|---|
| Form 8-K filings (90d) | 4 |
| Form 144 notices (90d) | 3 |
| Latest Form 4 filing | 2026-07-08 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Naylor Stuart | CHIEF SCI OFCR, OPHTHALMOLOGY | S — Open-market sale | 2.5K | $13.86 | $35K | SEC | |
| Naylor Stuart | CHIEF SCI OFCR, OPHTHALMOLOGY | S — Open-market sale | 25.1K | $14.90 | $374K | SEC | |
| Harris Keith R. | Insider | M — Option exercise | 75.0K | — | — | SEC | |
| Giroux Richard | CFO & COO | G — Bona-fide gift | 7.0K | $0.00 | — | SEC | |
| Forbes Alexandria | PRESIDENT & CEO | S — Open-market sale | 62.0K | $9.17 | $569K | SEC | |
| Giroux Richard | CFO & COO | S — Open-market sale | 56.0K | $10.22 | $572K | SEC | |
| PERCEPTIVE ADVISORS LLC | Insider | A — Grant or award | 555.6K | $9.00 | $5.00M | SEC | |
| Naylor Stuart | CHIEF DEV. OFFICER | S — Open-market sale [10b5-1] | 27.7K | $9.36 | $259K | SEC | |
| Forbes Alexandria | PRESIDENT & CEO | S — Open-market sale [10b5-1] | 62.0K | $7.41 | $459K | SEC | |
| Forbes Alexandria | PRESIDENT & CEO | F — Tax withholding / forfeiture | 33.0K | $7.45 | $246K | SEC | |
| Forbes Alexandria | PRESIDENT & CEO | M — Option exercise | 62.5K | — | — | SEC | |
| Giroux Richard | CFO & COO | F — Tax withholding / forfeiture | 31.7K | $7.45 | $236K | SEC | |
| Zeldin Robert K | CHIEF MEDICAL OFFICER | F — Tax withholding / forfeiture | 3.0K | $7.45 | $22K | SEC | |
| Wollin Robert J | GENERAL COUNSEL AND SECRETARY | M — Option exercise | 11.2K | — | — | SEC | |
| Giroux Richard | CFO & COO | M — Option exercise | 60.0K | — | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for MeiraGTx Holdings plc (MGTX). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| PERCEPTIVE ADVISORS LLC | 8 | $5.00M |
| Giroux Richard | 3 | $572K |
| Harris Keith R. | 3 | — |
| Naylor Stuart | 3 | $409K |
| Forbes Alexandria | 2 | $569K |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in MGTX insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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