General Transaction Codes

    P – Open market or private purchase of securities
    S – Open market or private sale of securities
    V – Transaction voluntarily reported earlier than required

Rule 16b-3 Transaction Codes

    A – Grant, award, or other acquisition
    D – Sale (or disposition) back to the issuer of the securities
    F – Payment of exercise price or tax liability by delivering or withholding securities
    I – Discretionary transaction, which is an order to the broker to execute the transaction at the best possible price
    M – Exercise of conversion of derivative security

Derivative Securities Codes

    C – Conversion of derivative security (usually options)
    E – Expiration of short derivative position (usually options)
    H – Expiration (or cancellation) of long derivative position with value received (usually options)
    O – Exercise of out-of-the-money derivative securities (usually options)
    X – Exercise of in-the-money or at-the-money derivatives securities (usually options)

Other Sections 16b Exempt Transactions and Small Acquisition Codes

    G – Bona fide gift
    L – Small Acquisition
    W – Acquisition or disposition by will or laws of descent and distribution
    Z – Deposit into or withdrawal from voting trust

Other Transaction Codes

    J – Other acquisition or disposition (transaction described in footnotes)
    K – Transaction in equity swap or similar instrument
    U – Disposition due to a tender of shares in a change of control transaction