To fill out a stock transfer form, write in the number of shares, the company name and stock class, the certificate number, and the recipient’s full legal name and taxpayer identification number exactly as they should appear on the new registration, then sign the form using your name as it is printed on the certificate and have that signature medallion-guaranteed before mailing everything to the company’s transfer agent. The form itself is short. What makes it work is matching every detail to the certificate and to the transfer agent’s requirements, because a single mismatch is enough to send the package back.
The form goes by a couple of names. On the back of a paper certificate it is called an assignment or endorsement. As a standalone document it is called an irrevocable stock power. Both do the same job: they authorize the transfer agent to cancel the old registration and put the shares in someone else’s name.
When You Actually Need One
If you sell publicly traded stock through a brokerage account, you never touch a stock power. The broker and the Depository Trust Company move the shares electronically. A paper form comes into play when shares move outside that normal pipeline: a private sale of shares in a closely held company, a gift to a relative or charity, a transfer into a living trust, re-registration after a name change, or shares passing to heirs after a death. In each of those situations you sign a stock power so the transfer agent has written authority to change the books.
Gather This Before You Start
Most rejected transfers fail on the small stuff. Have all of this in front of you before you write anything down.
- The original stock certificate, if one was issued. You need the certificate number and the exact share count printed on it.
- Your name exactly as it appears on the certificate: same spelling, same middle initial, same suffix. If your legal name has changed since the certificate was issued, you may need to sign in both the old and new names and provide supporting documentation such as a marriage certificate.
- The full legal name of the issuing company, the class of stock (common, preferred, Class A, and so on), and the number of shares being transferred.
- The recipient’s full legal name, mailing address, and Social Security number or taxpayer identification number. The transfer agent and the IRS both need the TIN for tax reporting.
- The consideration: the dollar amount the buyer is paying, or a notation that the transfer is a gift with no consideration.
If your shares are held in book-entry form through the Direct Registration System rather than as a paper certificate, you won’t have a certificate number. You’ll reference your DRS account number with the transfer agent instead.1DTCC. Direct Registration System (DRS) – Securities Processing
Filling In the Form
You have two options. The assignment section on the back of the certificate itself, or a separate stock power form. Many people prefer the separate form because it can be mailed apart from the certificate; if one envelope goes missing, the documents on their own are useless to a thief.
The Certificate Endorsement
Flip the certificate over. On the back are blank lines for the recipient’s name, the number of shares, and your signature. Write the recipient’s full legal name on the assignee line. Sign your name exactly as it appears on the front.
A Separate Stock Power
A standalone stock power covers the same ground with a little more room. The typical fields:
- Number of shares being transferred. If you’re transferring all shares on a single certificate, this must match the certificate exactly.
- The full legal name of the issuing company and the class of stock (for example, “Common Stock”).
- Certificate number or numbers, copied exactly from the physical certificate. If you’re using one stock power for multiple certificates of the same issue, the share quantity should reflect the total across all certificates.2Merrill Lynch. Irrevocable Stock or Bond Power
- Pre-printed appointment language that irrevocably names the transfer agent (or another party) as your attorney to make the change on the company’s books. You don’t fill this in; you just don’t strike it.
- Your signature, the date, and your Social Security or taxpayer ID number.
Do not cross out or white-out anything. Corrections void the form and you’ll need to start over on a fresh copy.2Merrill Lynch. Irrevocable Stock or Bond Power
If the shareholder transferring the stock is a corporation rather than an individual, a corporate resolution authorizing the transfer should go with the stock power.3V Stock Transfer. Frequently Asked Questions – FAQ
Getting the Signature Medallion-Guaranteed
Nearly every transfer agent requires a medallion signature guarantee on the stock power. A notary stamp will not substitute and will be rejected.4SEC. Medallion Signature Guarantees: Preventing the Unauthorized Transfer of Securities The medallion does more than confirm your signature is genuine. It confirms your identity and your legal authority to transfer the securities, and the guaranteeing institution takes on financial liability if something goes wrong.5Bank of America. Medallion Signature Guarantee
Medallion guarantees are available at banks, credit unions, savings institutions, and brokerage firms that participate in one of the three recognized programs: STAMP, SEMP, or MSP.4SEC. Medallion Signature Guarantees: Preventing the Unauthorized Transfer of Securities The institution will almost always require you to be an existing customer, and not every branch offers the service. Call ahead. Sign the stock power only in front of the guarantor, not before.
Sending It to the Transfer Agent
The stock power goes to the company’s transfer agent, not to the company itself and not to the buyer. A complete package includes:3V Stock Transfer. Frequently Asked Questions – FAQ
- The original stock certificate, if physical certificates were issued
- The endorsed certificate back or a separate stock power carrying the medallion guarantee
- The recipient’s full name, address, and taxpayer identification number
- A corporate resolution, if a company rather than an individual is transferring the shares
- Delivery instructions for the new certificate or DRS statement
- The transfer agent’s processing fee
If you use a separate stock power, mail it in a different envelope from the certificate. Routine transfers are generally processed the same day they arrive and almost always within 72 hours. Non-routine transfers, meaning those involving restricted stock, estate documentation, or missing paperwork, take longer but can often be expedited for an extra fee.3V Stock Transfer. Frequently Asked Questions – FAQ The transfer agent cancels the old certificate and issues a new one, or a DRS statement, in the recipient’s name.
Situations That Complicate or Block the Transfer
Private Company Restrictions
Shares in a private company almost always carry transfer restrictions. The company’s bylaws, articles of incorporation, or a separate shareholder agreement spell out the rules. Ignoring them isn’t just a delay: under Delaware law, a transfer that violates a valid restriction gives the recipient no legal or equitable title to the shares.6Open Casebook. DGCL Sec. 202 – Restrictions on Transfer of Stock Common restrictions include a right of first refusal (you must offer the shares to the company or existing holders first, usually with 15 to 30 days to match an outside offer), a requirement of board approval, and outright bans on transfers to competitors or non-accredited investors. Look at the face of the certificate first: restrictions are often printed there as a legend.
Restricted Securities Under SEC Rule 144
Shares acquired through private placements, employee stock options, or compensation plans are often “restricted securities” that cannot be resold to the public without registration or an exemption. SEC Rule 144 is the most common exemption, and it imposes a holding period: at least six months for shares issued by a company that files reports with the SEC, or at least one year for a non-reporting company, running from the date you bought and fully paid for the shares.7SEC. Rule 144: Selling Restricted and Control Securities A restrictive legend on the certificate flags this. The transfer agent will refuse to process the transfer until you show that an exemption applies or the holding period is met.
Lost or Destroyed Certificate
A missing certificate doesn’t block a transfer, but it adds paperwork and cost. You submit a lost stock affidavit swearing under penalty of perjury that the certificate is gone and that you’ve searched for it, and you sign an indemnity agreement holding the company harmless if the old certificate resurfaces.8SEC. Lost Stock Affidavit The transfer agent will typically also require a surety bond covering the value of the lost shares, with premiums running roughly 1% to 3% of current market value. If the missing certificate turns up later, you’re obligated to surrender it for cancellation.
Community Property and Spousal Consent
In the nine community property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin), shares acquired during a marriage are generally treated as jointly owned even if only one spouse is named on the certificate. Alaska allows couples to opt into community property rules by written agreement. Transferring those shares without the other spouse’s written consent can create serious problems, and most transfer agents and buyers will require a spousal signature on the stock power or a separate consent form.
Taxes the Transfer Triggers
Whether the transfer generates a tax bill depends on whether the shares are sold or given away.
A sale at a profit is a capital gains event for the seller. Shares held more than a year get long-term rates; shares held a year or less are taxed at ordinary income rates. The sale gets reported on IRS Form 8949, with totals flowing to Schedule D of your return.9Internal Revenue Service. Instructions for Form 8949 (2025)
A gift is different. The donor doesn’t recognize gain at the time of the gift; the tax bill shifts to the recipient, who inherits the donor’s cost basis and will owe capital gains tax based on that basis when they eventually sell. If the fair market value at the time of the gift is lower than the donor’s basis, the rules get more complicated because the recipient uses different basis figures depending on whether they later sell at a gain or a loss.10Internal Revenue Service. Property (Basis, Sale of Home, etc.) For 2026, you can gift up to $19,000 per recipient per year without filing a gift tax return, and married couples electing to split gifts can give $38,000 per recipient. Larger gifts require IRS Form 709, though actual gift tax is owed only once cumulative lifetime gifts exceed the lifetime exemption.11Internal Revenue Service. Gifts and Inheritances
Private company shares create a valuation problem because there’s no market price. The IRS accepts fair market value established through a Section 409A valuation by an independent appraiser, which carries a safe-harbor presumption of reasonableness. A qualifying appraisal is valid for 12 months or until a material event such as a new funding round, whichever comes first.12Carta. What Is a 409A Valuation? Key Concepts and Process If you’re transferring private shares and need a value for tax reporting, ask the company whether a current 409A valuation is on file.