The entity is the party: you are the authority
A retirement plan entity cannot sign for itself. The LLC, IRA Trust, or Solo 401(k) trust is the legal party to the contract, but a human being must execute it on the entity's behalf. That person is you, acting in your designated role.
For an IRA LLC, your role is manager. For an IRA Trust or Solo 401(k) trust, your role is trustee.
Your signature must reflect that role. Signing your name alone, without your title, leaves the entity's authority ambiguous and can create problems with title companies, lenders, and counterparties.
Signature block format by plan type
IRA LLC
SB Property Holdings LLC
By: ___________________________
Sophie Bennett, Manager
IRA Trust
Blue Sky Investment Trust
By: ___________________________
Samir Mansour, trustee
Solo 401(k)
Widget Enterprises 401(k) Plan
By: ___________________________
Lucas Meyer, trustee
How most contracts handle this
Many investment documents (purchase agreements, subscription agreements, loan documents) have separate fields for the entity name and the authorized signer. In those cases:
- Entity / Buyer field: Enter the full legal name of the LLC or trust
- Signature / Authorized by field: Sign your name and print your title (manager or trustee) beneath it
You do not need to repeat the full formal vesting language in every field. The entity name goes where the contracting party is identified; your name and title go where the signature is required.