Ronald B. Stark - 04 Jan 2024 Form 4 Insider Report for Arcadium Lithium plc

Role: Corp Ctrlr & CAO
Signature: /s/ Sara Ponessa, as attorney-in-fact
Issuer symbol: N/A
Transactions as of: 04 Jan 2024
Net transactions value: $0
Form type: 4
Filing time: 08 Jan 2024, 16:20:28 UTC
Previous filing: 27 Dec 2023
Next filing: 01 Feb 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALTM	Ordinary Shares	Award		+12,051			12,051	04 Jan 2024	Direct	F1
transaction	ALTM	Ordinary Shares	Award		+19,270	+160%		31,321	04 Jan 2024	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ALTM	Stock Option (Right to Buy)	Award		+7,177			7,177	04 Jan 2024	Ordinary Shares	7,177	$9.70	Direct	F3
transaction	ALTM	Stock Option (Right to Buy)	Award		+7,723			7,723	04 Jan 2024	Ordinary Shares	7,723	$8.74	Direct	F3
transaction	ALTM	Stock Option (Right to Buy)	Award		+29,317			29,317	04 Jan 2024	Ordinary Shares	29,317	$8.46	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the conversion of common stock of Livent Corporation ("Livent"), par value $0.001 per share ("Livent Common Stock"), held by the reporting person as of January 4, 2024, into ordinary shares of Arcadium Lithium plc ("Arcadium"), par value $1.00 per share ("Arcadium Ordinary Shares"), in accordance with the terms of the Transaction Agreement, dated as of May 10, 2023, by and between Livent, Allkem Limited ("Allkem"), Lightning-A Merger Sub, Inc. and Arcadium, providing for a combination of Livent and Allkem in a merger of equals transaction (as amended, the "Transaction Agreement").
F2	Represents the conversion of restricted share units with respect to shares of Livent Common Stock ("Livent RSUs"), held by the reporting person as of January 4, 2024, into restricted share units with respect to Arcadium Ordinary Shares ("Arcadium RSUs"), in accordance with the terms of the Transaction Agreement, in connection with the merger of equals transaction.
F3	Represents the conversion of stock options to purchase Livent Common Stock ("Livent Options") into stock options to purchase Arcadium Ordinary Shares ("Arcadium Options"), in accordance with the terms of the Transaction Agreement, in connection with the merger of equals transaction.