MeiraGTx (MGTX) CMO amends Form 4 for 7,814 tax-withheld shares

Rhea-AI Filing Summary

MeiraGTx Holdings plc Chief Medical Officer Robert K. Zeldin reported an administrative update related to equity compensation. On the vesting of an award, 7,814 Ordinary Shares were withheld to pay taxes at an indicated value of $7.73 per share. Following this tax-withholding disposition, he beneficially owns 146,204 Ordinary Shares directly. This amended filing corrects the previously reported number of shares withheld and the post-transaction holdings, and also adjusts total beneficial ownership down by two shares to address earlier rounding errors.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Zeldin Robert K

Role CHIEF MEDICAL OFFICER

Type	Security	Shares	Price	Value
Tax Withholding	Ordinary Shares	7,814	$7.73	$60K

Holdings After Transaction: Ordinary Shares — 146,204 shares (Direct, null)

Footnotes (1)

1. Shares withheld for payment of taxes upon vesting of award. Due to an administrative error, this Form 4 is being amended to reflect the correct number of shares withheld for payment of taxes upon vesting of award as well as the number of securities beneficially owned following the reported transaction. Amount of securities beneficially owned has also been adjusted down by two shares due to rounding errors on two prior reports.

Key Figures

Tax-withheld shares: 7,814 shares Implied tax value per share: $7.73 per share Shares owned after transaction: 146,204 shares +2 more

5 metrics

Tax-withheld shares 7,814 shares Shares withheld for payment of taxes upon vesting of award

Implied tax value per share $7.73 per share Value used for shares withheld to pay taxes

Shares owned after transaction 146,204 shares Ordinary shares beneficially owned following reported transaction

Tax-withholding transactions 1 transaction, 7,814 shares Summary of tax-withholding dispositions in this filing

Rounding adjustment 2 shares Beneficial ownership reduced due to prior rounding errors

Key Terms

tax-withholding disposition, beneficially owned, vesting of award, Form 4/A

4 terms

tax-withholding disposition financial

"The filing describes the event as a tax-withholding disposition related to equity awards."

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

beneficially owned financial

"Amount of securities beneficially owned has also been adjusted down by two shares."

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

vesting of award financial

"Shares withheld for payment of taxes upon vesting of award."

Form 4/A regulatory

"Due to an administrative error, this Form 4 is being amended to reflect the correct number of shares."

Form 4/A is an amended filing that corrects or updates an earlier Form 4, the mandatory report that insiders (like company executives, directors, or large shareholders) must file when their ownership stakes change. Think of it as an edited receipt showing who bought or sold stock and when; investors use it to track insider confidence, detect potential conflicts, and spot trading patterns that might signal future company prospects.

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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).

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^*

Zeldin Robert K

(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 MEDICAL OFFICER

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
01/07/2026

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)
01/08/2026

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	01/07/2026		F		7,814(1)(2)	D	$7.73	146,204(2)(3)	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. Shares withheld for payment of taxes upon vesting of award.

2. Due to an administrative error, this Form 4 is being amended to reflect the correct number of shares withheld for payment of taxes upon vesting of award as well as the number of securities beneficially owned following the reported transaction.

3. Amount of securities beneficially owned has also been adjusted down by two shares due to rounding errors on two prior reports.

	/s/ Robert J. Wollin, Attorney-in-Fact for Robert K. Zeldin	04/28/2026
	** 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 did MeiraGTx (MGTX) executive Robert K. Zeldin report in this Form 4/A?

Robert K. Zeldin reported an amended insider transaction related to equity compensation. The filing updates the number of MeiraGTx ordinary shares withheld to pay taxes on a vesting award and corrects his beneficial ownership figures, including minor rounding adjustments from two prior reports.

How many MeiraGTx (MGTX) shares were withheld for taxes in this Form 4/A?

The filing shows that 7,814 MeiraGTx ordinary shares were withheld to cover tax obligations when an equity award vested. These shares were valued at $7.73 per share for this purpose, reflecting a tax-withholding disposition rather than an open-market purchase or sale of stock.

How many MeiraGTx (MGTX) shares does Robert K. Zeldin own after this transaction?

After the tax-withholding transaction, Robert K. Zeldin beneficially owns 146,204 MeiraGTx ordinary shares directly. This amended Form 4 adjusts his reported holdings to reflect the corrected tax-withholding amount and also includes a two-share reduction to fix rounding errors in earlier reports.

Why was this MeiraGTx (MGTX) Form 4/A filed as an amendment?

The Form 4/A was filed to correct administrative errors in a prior report. It updates the exact number of MeiraGTx shares withheld to pay taxes on a vesting award, revises the post-transaction beneficial ownership, and adjusts that figure down by two shares for earlier rounding mistakes.

Does this MeiraGTx (MGTX) Form 4/A indicate an open-market sale by the CMO?

No, the transaction is described as a tax-withholding disposition, not an open-market sale. MeiraGTx shares were withheld to satisfy tax obligations when an equity award vested, with 7,814 shares applied at $7.73 per share, and remaining holdings updated accordingly in the amended filing.