MeiraGTx (MGTX) CDO Stuart Naylor sells 27,661 shares via 10b5-1 plan

Rhea-AI Filing Summary

MeiraGTx Holdings plc chief development officer Stuart Naylor reported an open-market sale of 27,661 Ordinary Shares of MGTX on April 7, 2026. The shares were sold at a weighted average price of $9.36, in multiple trades between $9.11 and $9.52 per share.

After this transaction, Naylor directly holds 668,505 Ordinary Shares. The sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on December 9, 2025, indicating it was planned in advance rather than timed discretionarily.

Insider Trade Summary 10b5-1

Net Seller: 27,661 shares ($258,907)

Net Sell 1 txn

Insider Naylor Stuart

Role CHIEF DEV. OFFICER

Sold 27,661 shs ($259K)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	27,661	$9.36	$259K

Holdings After Transaction: Ordinary Shares — 668,505 shares (Direct)

Footnotes (1)

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 9, 2025. The price reported reflects the weighted average sales price. The shares were sold in multiple transactions at prices ranging from $9.11 to $9.52, inclusive. The reporting person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.

Key Figures

Shares sold: 27,661 shares Weighted average sale price: $9.36 per share Post-transaction holdings: 668,505 shares +3 more

6 metrics

Shares sold 27,661 shares Open-market sale on April 7, 2026

Weighted average sale price $9.36 per share Ordinary Shares sold on April 7, 2026

Post-transaction holdings 668,505 shares Ordinary Shares directly held after sale

Sale price range $9.11–$9.52 per share Prices of individual trades included in the sale

Rule 10b5-1 plan adoption date December 9, 2025 Plan governing the reported share sales

Transaction date April 7, 2026 Date of open-market sale

Key Terms

Rule 10b5-1 trading plan, weighted average sales price, open-market sale, Ordinary Shares

4 terms

Rule 10b5-1 trading plan regulatory

"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average sales price financial

"The price reported reflects the weighted average sales price."

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Ordinary Shares financial

"security_title: Ordinary Shares"

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Naylor Stuart

(Last) (First) (Middle)

655 THIRD AVENUE

SUITE 1115

(Street)

NEW YORK NEW YORK 10017

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MeiraGTx Holdings plc [ MGTX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CHIEF DEV. OFFICER

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/07/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	04/07/2026		S(1)		27,661	D	$9.36(2)(3)	668,505	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 9, 2025.

2. The price reported reflects the weighted average sales price. The shares were sold in multiple transactions at prices ranging from $9.11 to $9.52, inclusive.

3. The reporting person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.

	/s/ Richard Giroux, Attorney-in-fact for Stuart Naylor	04/07/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did MeiraGTx (MGTX) report for Stuart Naylor?

MeiraGTx reported that chief development officer Stuart Naylor sold 27,661 Ordinary Shares in an open-market transaction. The sale occurred on April 7, 2026, at a weighted average price of $9.36 per share, across multiple trades between $9.11 and $9.52.

At what prices did Stuart Naylor’s MeiraGTx (MGTX) shares sell?

The reported MeiraGTx share sale used a weighted average price of $9.36 per share. Individual trades were executed in a range from $9.11 to $9.52 per share, with the filing noting that detailed price-by-trade information is available upon request.

How many MeiraGTx (MGTX) shares does Stuart Naylor hold after this sale?

After the reported sale, chief development officer Stuart Naylor directly holds 668,505 Ordinary Shares of MeiraGTx. This figure reflects his ownership immediately following the 27,661-share open-market sale disclosed in the Form 4 filing for the April 7, 2026 transaction date.

Was the MeiraGTx (MGTX) insider sale made under a Rule 10b5-1 plan?

Yes. The Form 4 states that the sales were effected pursuant to a Rule 10b5-1 trading plan. This plan was adopted by the reporting person on December 9, 2025, indicating the transactions were pre-scheduled rather than opportunistically timed based on short-term market movements.

Who is the MeiraGTx (MGTX) insider involved in this Form 4 filing?

The insider is Stuart Naylor, who serves as chief development officer of MeiraGTx Holdings plc. He reported a direct, open-market sale of 27,661 Ordinary Shares and now holds 668,505 shares, as disclosed in the Form 4 filed for the April 7, 2026 transaction.