secwatch / observer

Arcellx, Inc. — fact timeline

Source-grounded facts extracted from Arcellx, Inc.'s SEC 8-K filings across all families, newest first. Each cites a verbatim SEC excerpt.

ACLX Arcellx, Inc. JSON

Thomas Kennedy was appointed as General Counsel at Arcellx, Inc..

“the directors and officers of Purchaser as of immediately prior to the Effective Time, which consisted of Andrew D. Dickinson, Keeley Cain Wettan, and Thomas Kennedy, became the directors and officers of the Company.”

Keeley Cain Wettan was appointed as Chief Financial Officer at Arcellx, Inc..

“the directors and officers of Purchaser as of immediately prior to the Effective Time, which consisted of Andrew D. Dickinson, Keeley Cain Wettan, and Thomas Kennedy, became the directors and officers of the Company.”

Andrew D. Dickinson was appointed as Chief Executive Officer at Arcellx, Inc..

“the directors and officers of Purchaser as of immediately prior to the Effective Time, which consisted of Andrew D. Dickinson, Keeley Cain Wettan, and Thomas Kennedy, became the directors and officers of the Company.”

Thomas Kennedy was appointed as Director at Arcellx, Inc..

“the directors and officers of Purchaser as of immediately prior to the Effective Time, which consisted of Andrew D. Dickinson, Keeley Cain Wettan, and Thomas Kennedy, became the directors and officers of the Company.”

Keeley Cain Wettan was appointed as Director at Arcellx, Inc..

“the directors and officers of Purchaser as of immediately prior to the Effective Time, which consisted of Andrew D. Dickinson, Keeley Cain Wettan, and Thomas Kennedy, became the directors and officers of the Company.”

Andrew D. Dickinson was appointed as Director at Arcellx, Inc..

“the directors and officers of Purchaser as of immediately prior to the Effective Time, which consisted of Andrew D. Dickinson, Keeley Cain Wettan, and Thomas Kennedy, became the directors and officers of the Company.”

Rami Elghandour resigned as Chief Executive Officer at Arcellx, Inc..

“each officer of the Company resigned and ceased to be an officer of the Company as of the Effective Time.”

Kristin Myers resigned as Director at Arcellx, Inc..

“Rami Elghandour, David Lubner, Kavita Patel, Olivia Ware, Ali Behbahani, Jill Carroll, Andrew Galligan, and Kristin Myers, being all of the directors of the Company immediately prior to the Effective Time, resigned and ceased to be directors of the Company as of the Effective Time.”

Andrew Galligan resigned as Director at Arcellx, Inc..

“Rami Elghandour, David Lubner, Kavita Patel, Olivia Ware, Ali Behbahani, Jill Carroll, Andrew Galligan, and Kristin Myers, being all of the directors of the Company immediately prior to the Effective Time, resigned and ceased to be directors of the Company as of the Effective Time.”

Jill Carroll resigned as Director at Arcellx, Inc..

“Rami Elghandour, David Lubner, Kavita Patel, Olivia Ware, Ali Behbahani, Jill Carroll, Andrew Galligan, and Kristin Myers, being all of the directors of the Company immediately prior to the Effective Time, resigned and ceased to be directors of the Company as of the Effective Time.”

Ali Behbahani resigned as Director at Arcellx, Inc..

“Rami Elghandour, David Lubner, Kavita Patel, Olivia Ware, Ali Behbahani, Jill Carroll, Andrew Galligan, and Kristin Myers, being all of the directors of the Company immediately prior to the Effective Time, resigned and ceased to be directors of the Company as of the Effective Time.”

Olivia Ware resigned as Director at Arcellx, Inc..

“Rami Elghandour, David Lubner, Kavita Patel, Olivia Ware, Ali Behbahani, Jill Carroll, Andrew Galligan, and Kristin Myers, being all of the directors of the Company immediately prior to the Effective Time, resigned and ceased to be directors of the Company as of the Effective Time.”

Kavita Patel resigned as Director at Arcellx, Inc..

“Rami Elghandour, David Lubner, Kavita Patel, Olivia Ware, Ali Behbahani, Jill Carroll, Andrew Galligan, and Kristin Myers, being all of the directors of the Company immediately prior to the Effective Time, resigned and ceased to be directors of the Company as of the Effective Time.”

David Lubner resigned as Director at Arcellx, Inc..

“Rami Elghandour, David Lubner, Kavita Patel, Olivia Ware, Ali Behbahani, Jill Carroll, Andrew Galligan, and Kristin Myers, being all of the directors of the Company immediately prior to the Effective Time, resigned and ceased to be directors of the Company as of the Effective Time.”

Rami Elghandour resigned as Director at Arcellx, Inc..

“Rami Elghandour, David Lubner, Kavita Patel, Olivia Ware, Ali Behbahani, Jill Carroll, Andrew Galligan, and Kristin Myers, being all of the directors of the Company immediately prior to the Effective Time, resigned and ceased to be directors of the Company as of the Effective Time.”
Material Agreements

Arcellx, Inc. entered into Agreement and Plan of Merger with Gilead Sciences, Inc. (effective 2026-02-22).

“On February 22, 2026, Arcellx, Inc., a Delaware corporation (the “ Company ”), entered into an Agreement and Plan of Merger (the “ Merger Agreement ”) with Gilead Sciences, Inc., a Delaware corporation (“ Parent ”), and Ravens Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Parent (“ Purchaser ”).”

Kristin Myers was appointed as Director at Arcellx, Inc..

“On March 18, 2025, the Board appointed Kristin Myers to fill one of the two vacancies on the Board, effective March 18, 2025, as a Class III director”

Andrew Galligan was appointed as Director at Arcellx, Inc..

“On March 18, 2025, the Board appointed Andrew Galligan to fill one of the two vacancies on the Board, effective March 18, 2025, as a Class I director”

Derek Yoon resigned as Director at Arcellx, Inc..

“On March 17, 2025, Arcellx, Inc. (the “Company”) was notified by Derek Yoon that he intended to resign from the Company’s board of directors (the “Board”) and from the Board committees on which he served.”
Earnings Releases

Arcellx, Inc. reported for the first quarter ended March 31, 2024 results: revenue $39.3 million, net income Net loss was $7.2 million.

“million. Arcellx anticipates that its cash, cash equivalents, and marketable securities will fund its operations into 2027. Collaboration revenue: Collaboration revenue were $39.3 million and $17.9 million for the quarters ended March 31, 2024 and 2023, respectively, an increase of $21.4 million. This increase was primarily driven by changes in estimated”

Facts are extracted by an LLM and gated to those whose source quote is present verbatim in the filing text. Coverage is best-effort while backfill and monitoring mature; this is not yet a full-market index. See methodology.