Exhibit 99.1 News Release – May 7, 2024 Arcadium Lithium Releases First Quarter 2024 Results • Solid First Quarter Results Driven by Average Realized Pricing for Lithium Hydroxide and Carbonate of Over $20,000 / product metric ton • On Track to Achieve $60 to 80 million of Realized Synergies / Cost Savings in 2024 • Multiple Expansions Provide Pathway to 170,000 LCEs1 of Capacity by 2026 PHILADELPHIA and PERTH, Australia, May 7, 2024 /PRNewswire/ -- Arcadium Lithium plc (NYSE: ALTM, ASX: LTM, “Arcadium Lith ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 _______________________________________________________________________ FORM 10-K _______________________________________________________________________ ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2023 or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from _______ to _ ...

Arcadium Lithium plc (NYSE:ALTM) Bank of America Securities 2024 Global Agriculture and Materials Conference February 28, 2024 2:50 PM ET Company Participants Paul Graves - CEO Unidentified Company Representative Welcome back. It's a pleasure to host this fireside chat with Paul Graves, CEO of Arcadium Lithium. I have known Paul a long time and he was previously CFO of FMC, and years ago he was Investment Banking, Goldman Sachs Natural Resources. So Lithium's a good fit for him. So we'd like to maybe start ...

Arcadium Lithium plc (NYSE:ALTM) Bank of America Securities 2024 Global Agriculture and Materials Conference February 27, 2024 2:00 PM ET Company Participants Paul Graves - Chief Executive Officer Unidentified Company Representative Thank you. Our next session is with Arcadium Lithium of course created from the recent merger of Livent and Allkem. Arcadium owns a number of Argentine assets -- I did it, sorry, number of Argentine carbon assets as well as spodumene hydroxide conversion assets globally. Please ...

Arcadium Lithium plc (NYSE:ALTM) Q4 2023 Earnings Conference Call February 22, 2024 5:00 PM ET Company Participants Daniel Rosen - Investor Relations and Strategy Paul Graves - President and Chief Executive Officer Gilberto Antoniazzi - Chief Financial Officer Conference Call Participants Stephen Richardson - Evercore ISI Glyn Lawcock - Barrenjoey Joel Jackson - BMO Capital Markets Kate McCutcheon - Citi Chris Kapsch - Loop Capital Markets Rob Stein - Macquarie Ryan Weis - KeyBanc Capital Markets Operator G ...

Exhibit 99.1 News Release – February 22, 2024 Arcadium Lithium Releases Fourth Quarter and Full Year 2023 Results and Provides 2024 Full Year Outlook • Merger Between Allkem and Livent Completed on January 4, 2024 • Arcadium Lithium 2024 Outlook Highlighted by a 40% Increase in Lithium Carbonate and Hydroxide Volumes as a Combined Company • Projecting $60 to 80 million of Realized Synergies / Cost Savings in 2024 • Slowing Pace of Expansion in Light of Current Market Conditions and to Optimize Capital Effic ...

Q3 2023 Earnings Presentation 10.31.23 Safe HarborStatement Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995: Certain statements in this earnings presentation are forward-looking statements. In some cases, we have identified forward-looking statements by such words or phrases as "will likely result," "is confident that," "expect," "expects," "should," "could," "may," "will continue to," "believe," "believes," "anticipates," "predicts," "forecasts," "estimates," "projects," "p ...

Allkem Limited (OROCF) June 2023 Quarter Results Briefing July 26, 2023 8:00 PM ET Company Participants Martin de Solay - Managing Director and CEO Christian Barbier - Chief Sales and Marketing Officer Christian Cortes - Acting CFO James Connolly - Chief Project Development Officer Liam Franklyn - Head of Mt Cattlin Operations Conference Call Participants Rahul Anand - Morgan Stanley Tom Hays - CLSA Max Vickerson - Morgans Kate McCutcheon - Citi Mitch Ryan - Jefferies Al Harvey - JPMorgan Hugo Nicolai - Gol ...

Allkem Limited (OROCF) Q3 2023 Earnings Conference Call April 19, 2023 8:00 PM ET Company Participants Martin Perez de Solay - MD and CEO Christian Barbier - Chief Sales and Marketing Officer James Connolly - Chief Project Development Officer Christian Cortes - Acting CFO Liam Franklyn - Head, Australian Operations Conference Call Participants Tom Hays - CLSA Mitch Ryan - Jefferies Al Harvey - JPMorgan Hugo Nicolaci - Goldman Sachs Kaan Peker - RBC Capital Markets Reg Spencer - Canaccord Genuity Hayden Bair ...

Livent Corporation BMO Conference Presentation February 27, 2023 Safe HarborStatement Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995: Certain statements in this earnings presentation are forward-looking statements. In some cases, we have identified forward-looking statements by such words or phrases as "will likely result," "is confident that," "expect," "expects," "should," "could," "may," "will continue to," "believe," "believes," "anticipates," "predicts," "forecasts," " ...