MA H501

Requires all Massachusetts LLCs and foreign LLCs operating in the state to disclose beneficial owners to the Secretary of State, including name, date of birth, address, government ID number, and taxpayer identification number

Defines "beneficial owner" as any person who holds membership interest, exercises substantial control, or has been assigned membership interest in an LLC, with exemptions for minor children, employees, nominees, and creditors

Mandates disclosure of ownership chains through intermediary entities, with special requirements for trusts controlling 25% or more of an LLC to identify trustees, beneficiaries, and grantors

Requires LLCs to report the total number and location of properties each beneficial owner holds in Massachusetts

Makes all disclosed beneficial ownership information a public record under Chapter 66, and requires updated filings within 30 days of any ownership changes