SCHEDULE: FMR LLC Discloses 0.5% Passive Stake in ARCELLX INC

FMR LLC and Abigail P. Johnson have filed an Amendment No. 7 to Schedule 13G, reporting a 0.5% beneficial ownership in ARCELLX INC's common stock as of February 27, 2026.

Summary

• FMR LLC and Abigail P. Johnson jointly filed an Amendment No. 7 to Schedule 13G regarding their beneficial ownership in ARCELLX INC.
• The filing reports beneficial ownership of 309,117.46 shares of ARCELLX INC's common stock.
• This ownership represents 0.5% of the total class of securities.
• The event requiring this filing occurred on February 27, 2026.
• FMR LLC holds sole voting power over 305,940.00 shares and sole dispositive power over 309,117.46 shares.
• Abigail P. Johnson holds sole dispositive power over 309,117.46 shares, with no sole or shared voting power.
• The securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of ARCELLX INC.
• FMR LLC is classified as a parent holding company, and Abigail P. Johnson is an individual.
• Several FMR LLC subsidiaries, including FIAM LLC, Fidelity Institutional Asset Management Trust Company, Fidelity Management & Research Company LLC, and Strategic Advisers LLC, are identified as relevant entities beneficially owning shares.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing, as it is a routine disclosure of a passive, non-controlling stake by a large institutional investor, FMR LLC, and does not indicate any significant strategic shift or performance update for ARCELLX INC.

Positives

• NA

Negatives

• NA

Risks

• NA

Future Outlook

NA

Industry Context

StockSavvy.ai notes that Schedule 13G filings are routine disclosures by passive institutional investors holding less than 5% of a company's stock. FMR LLC, a major asset manager, frequently appears in such filings across various industries, indicating its broad investment portfolio rather than a specific strategic move related to ARCELLX INC's industry.

Stakeholder Impact

• Shareholders: Minimal impact, as it confirms a passive, non-controlling institutional ownership.
• Employees: No direct impact.
• Customers: No direct impact.
• Suppliers: No direct impact.
• Creditors: No direct impact.

Key Dates

Keywords

ARCELX INC, FMR LLC, Abigail P. Johnson, Schedule 13G, Beneficial Ownership, Common Stock, Institutional Investor, Passive Investment, SEC Filing