Arcellx amends and restates bylaws to update director nomination procedures and conform to Delaware law

Arcellx, Inc.

• Board amended and restated bylaws effective December 15, 2022, revising director nomination and stockholder proposal procedures.
• Requires stockholders nominating directors to provide evidence of Rule 14a-19 compliance no later than five business days before the meeting.
• Updates stockholder meeting procedures to conform to recent amendments to the Delaware General Corporation Law.
• Makes various updates to conform to current Delaware law, including ministerial and clarifying changes.