Form 4 - Statement of changes in beneficial ownership of securities

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
X	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* McIlvenny Patrick (Last) (First) (Middle) C/O HORIZON THERAPEUTICS PLC 70 ST. STEPHEN'S GREEN (Street) DUBLIN L2 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Horizon Therapeutics Public Ltd Co [ HZNP ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Chief Accounting Officer
	3. Date of Earliest Transaction (Month/Day/Year) 10/06/2023
	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
Ordinary Shares	10/06/2023		D		6,874(1)	D	$116.5(2)	0	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
Restricted Stock Units	(3)	10/06/2023		D			2,198	(4)	(4)	Ordinary Shares	2,198	(5)	0	D
Restricted Stock Units	(3)	10/06/2023		D			3,809	(6)	(6)	Ordinary Shares	3,809	(5)	0	D
Restricted Stock Units	(3)	10/06/2023		D			11,498	(7)	(7)	Ordinary Shares	11,498	(5)	0	D

Explanation of Responses:

1. Includes an aggregate of 558 Ordinary Shares (as defined in footnote 2 of this Form 4) acquired by the reporting person on December 1, 2022, June 1, 2023 and October 2, 2023 pursuant to an employee stock purchase program.

2. Reflects the disposition of ordinary shares of Horizon Therapeutics plc ("Issuer"), nominal value $0.0001 per share ("Ordinary Shares"), in connection with the consummation of the transactions contemplated by the Transaction Agreement (the "Transaction Agreement"), dated as of December 11, 2022, by and among Issuer, Amgen Inc. ("Parent"), and Pillartree Limited, a wholly owned subsidiary of Parent ("Acquirer Sub"), including the consummation of a scheme of arrangement under Chapter 1 of Part 9 of the Companies Act 2014 of Ireland (the "Scheme") pursuant to which Acquirer Sub acquired Issuer. Pursuant to the Transaction Agreement, on October 6, 2023, the effective time of the Scheme (the "Effective Time"), each outstanding Ordinary Share was converted into $116.50 in cash (the "Consideration").

3. Each RSU (as defined in footnote 5 to this Form 4) represents a contingent right to receive one Ordinary Share of the Issuer.

4. The Ordinary Shares subject to the RSUs (as defined in footnote 5 to this Form 4) vest on January 5, 2024.

5. Reflects the disposition of Issuer's restricted stock unit awards, excluding Issuer's restricted stock unit awards with performance-based vesting or delivery requirement, (each, a "RSU") as contemplated by the Transaction Agreement. Pursuant to the Transaction Agreement, at the Effective Time, each outstanding RSU (whether or not vested) was assumed and converted into a restricted stock unit (each, a "Parent RSU") denominated in shares of Parent's common stock. The number of shares of Parent's common stock subject to each such Parent RSU was equal to the product (rounded down to the nearest whole number) of (y) the number of shares of Ordinary Shares subject to the RSU immediately prior to the Effective Time multiplied by (z) the ratio equal to (1) the Consideration divided by (2) the volume weighted average of the per share closing price of Parent's common stock on the Nasdaq for five (5) trading days ending on the second business day prior to the completion of the Scheme.

6. The Ordinary Shares subject to the RSUs vest 1/3rd annually on each anniversary of January 5, 2022.

7. The Ordinary Shares subject to the RSUs vest 1/3rd annually on each anniversary of January 5, 2023.

Remarks:

	/s/ Patrick McIlvenny	10/06/2023
	** 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.

---