Sara Ponessa - Jan 4, 2024 Form 4/A Insider Report for Arcadium Lithium plc (ALTM)

Role: General Counsel, VP & Sec
Signature: /s/ Sara Ponessa
Stock symbol: ALTM
Transactions as of: Jan 4, 2024
Transactions value $: $0
Form type: 4/A
Date filed: 1/12/2024, 10:39 AM
Date Of Original Report: Jan 8, 2024
Previous filing: Dec 27, 2023
Next filing: Feb 1, 2024

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		+64.2K			64.2K	Jan 4, 2024	Ordinary Shares	64.2K	$7.07	Direct	F1, F2
transaction	ALTM	Stock Option (Right to Buy)	Award		+64.2K			64.2K	Jan 4, 2024	Ordinary Shares	64.2K	$7.07	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	The original Form 4, filed on January 8, 2024, is being amended by this Form 4 amendment to correct an error which omitted these tranches from the list of stock options to purchase common stock of Livent Corporation ("Livent"), par value $0.001 per share ("Livent Options") beneficially owned by the reporting person as of January 4, 2024 and converted 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 Livent Options into stock options to purchase ordinary shares of Arcadium Lithium plc ("Arcadium"), par value $1.00 per share ("Arcadium Options"), in accordance with the terms of the Transaction Agreement, in connection with the merger of equals transaction.

Content

The original Form 4, filed on January 8, 2024, is being amended by this Form 4 amendment to correct an error which omitted these tranches from the list of stock options to purchase common stock of Livent Corporation ("Livent"), par value $0.001 per share ("Livent Options") beneficially owned by the reporting person as of January 4, 2024 and converted 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")

Represents the conversion of Livent Options into stock options to purchase ordinary shares of Arcadium Lithium plc ("Arcadium"), par value $1.00 per share ("Arcadium Options"), in accordance with the terms of the Transaction Agreement, in connection with the merger of equals transaction.