TMDX director sells 4,142 shares at $130.45 after option exercise

TransMedics Group (TMDX) Form 4: A director exercised 4,142 stock options at $0.70 on 10/29/2025 and sold 4,142 common shares at $130.45 the same day under a Rule 10b5-1 trading plan entered on November 6, 2024.

Rhea-AI Filing Summary

TransMedics Group (TMDX) Form 4: A director exercised 4,142 stock options at $0.70 on 10/29/2025 and sold 4,142 common shares at $130.45 the same day under a Rule 10b5-1 trading plan entered on November 6, 2024. After these transactions, the director directly owned 2,866 shares. The option was fully vested and carried a stated expiration of 02/16/2026, with zero derivative securities remaining afterward.

Insider Trade Summary

Exercise and Sale: 4,142 shares ($537K approx. pre-tax spread)

Exercise and Sale 3 txns

Insider Basile Edward M

Role Director

Sold 4,142 shs ($540K)

Approx. gross sale proceeds $540K

Approx. exercise cost $3K

Approx. pre-tax spread $537K

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy)	4,142	$0.00	$0.00
Exercise	Common Stock	4,142	$0.70	$3K
Sale	Common Stock	4,142	$130.45	$540K

Holdings After Transaction: Stock Option (Right to Buy) — 0 contracts (Direct); Common Stock — 2,866 shares (Direct)

Footnotes (3)

1. F1. The reported transactions were effected pursuant to a Rule 10b5-1 trading plan entered into on November 6, 2024.
2. F2. The option is fully vested.
3. F3. The Stock Option reported herein as being disposed of is an option to purchase common stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the terms of the Merger Agreement, each outstanding option to purchase shares of common stock of TransMedics, Inc. was converted into an outstanding option to purchase shares of common stock of the Issuer adjusted on a 3.5-for-one basis, with a corresponding adjustment to the exercise price.

FAQ

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What did TMDX report in this Form 4?

A director exercised 4,142 options at $0.70 and sold 4,142 shares at $130.45 on 10/29/2025.

Was the transaction under a Rule 10b5-1 plan for TMDX?

Yes. It was effected pursuant to a Rule 10b5-1 plan entered on November 6, 2024.

How many TMDX shares does the director own after the trades?

The director directly owned 2,866 shares following the reported transactions.

What were the exercise and sale prices in the TMDX transactions?

Option exercise price was $0.70 per share; sale price was $130.45 per share.

What is the status and expiration of the exercised option?

The option was fully vested and had a stated expiration of 02/16/2026.

Did the director retain any derivative securities after the trades?

No. The filing reports 0 derivative securities owned after the transactions.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 10/31/2025 - 04:30 PM EDT Learn about SEC filing dates

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^*

Basile Edward M

(Last) (First) (Middle)

C/O TRANSMEDICS GROUP, INC.

200 MINUTEMAN ROAD

(Street)

ANDOVER MA 01810

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
TransMedics Group, Inc. [ TMDX ]

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/29/2025

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

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

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

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
Common Stock	10/29/2025		M(1)		4,142	A	$0.7	7,008	D
Common Stock	10/29/2025		S(1)		4,142	D	$130.45	2,866	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
Stock Option (Right to Buy)	$0.7	10/29/2025		M(1)			4,142	(2)	02/16/2026	Common Stock	4,142	(3)	0	D

Explanation of Responses:

1. The reported transactions were effected pursuant to a Rule 10b5-1 trading plan entered into on November 6, 2024.

2. The option is fully vested.

3. The Stock Option reported herein as being disposed of is an option to purchase common stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the terms of the Merger Agreement, each outstanding option to purchase shares of common stock of TransMedics, Inc. was converted into an outstanding option to purchase shares of common stock of the Issuer adjusted on a 3.5-for-one basis, with a corresponding adjustment to the exercise price.

	By: /s/ Gerardo Hernandez, Attorney-in-Fact	10/31/2025
	** 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.