U.S. legal term

cusip

A CUSIP (CUSIP) is a unique identifier assigned to a specific security, such as a stock or bond, which is used for the purpose of uniquely identifying that security in financial transactions and record-keeping.

Think of a CUSIP as a special tag or ID number for a specific company's stock. It’s like a unique fingerprint that helps track exactly which stock is being talked about, especially when it moves between different banks or exchanges.

It matters because it provides a standardized, unique way to identify a specific security instrument, which is crucial for accurate record-keeping, proper transaction processing, and ensuring that securities are correctly identified when traded or recorded in legal documents.

This page gives general U.S. legal information, not legal advice, and contract meaning can change by jurisdiction, industry, and clause wording.

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Source
LexPredict Legal Dictionary
Category
Security Identification
Status
Expanded entry available
Updated
Apr 26, 2026

Direct answer

What does cusip mean in U.S. legal context?

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A CUSIP (CUSIP) is a unique identifier assigned to a specific security, such as a stock or bond, which is used for the purpose of uniquely identifying that security in financial transactions and record-keeping.

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Plain English

cusip, explained simply

A cleaner interpretation for founders, operators, freelancers, and anyone reading legal text without slowing down the whole document review.

Think of a CUSIP as a special tag or ID number for a specific company's stock. It’s like a unique fingerprint that helps track exactly which stock is being talked about, especially when it moves between different banks or exchanges.

How cusip shows up in legal documents

Structured for both skimming humans and answer-oriented search systems: direct questions, direct answers, minimal fluff.

What is it?

A CUSIP (CUSIP) is a unique identifier assigned to a security, such as a stock or bond, used for the purpose of uniquely identifying that security in financial transactions and record-keeping. It serves as an unambiguous reference for the underlying asset.

Why does it matter?

It matters because it provides a standardized, unique way to identify a specific security instrument, which is crucial for accurate record-keeping, proper transaction processing, and ensuring that securities are correctly identified when traded or recorded in legal documents.

When does it matter?

It usually appears when dealing with the trading, issuance, or recording of a security, particularly in financial transactions involving securities listed on exchanges or held by specific financial institutions.

Where is it usually seen?

It is usually seen in regulatory filings, transaction records, security master lists, and official documentation related to the issuance or transfer of securities.

Who is affected?

The entity that issues the CUSIP (e.g., a corporation) and the financial institutions that hold or trade the security are affected by it.

How does it work?

In practice, a CUSIP is used to ensure that when one party refers to a specific security, there is no confusion about which asset is being referred to, ensuring proper identification across various legal and transactional systems.

Understand cusip fast

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1
Example

A company's stock issued by the Securities and Exchange Commission (SEC).

2
Example

A bond or security listed on an exchange that requires a unique identifier for tracking.

Next step

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Glossary source
LexPredict legal dictionary
Use it for
Fast meaning checks before deeper contract review
Public page status
Expanded and live

Source attribution: LexPredict legal dictionary repository. CC BY-SA 4.0.

Disclaimer: We do not provide legal advice. We translate legal language into plain English and help you prepare for a conversation with a lawyer.