The holding period for restricted stock under SEC Rule 144 is six months if the issuing company files regular reports with the SEC, or one year if it does not. That is the minimum time you must own the shares before you can sell them into the public market. A second clock, the tax holding period, decides whether your gain is taxed at short-term or long-term rates, and it does not always start on the same day as the SEC clock.
Getting both dates right matters. Sell too early and the transaction is an illegal unregistered distribution. Sell before the tax clock crosses one year and you can lose roughly half your gain to a higher tax rate.
When the SEC Clock Starts
Rule 144 says the holding period begins the day you acquire the shares and they are “fully paid for.” For most employees, the payment is the services you perform. What counts as the acquisition date depends on the form of your award.
A Restricted Stock Award (RSA) delivers actual shares on the grant date. You own them then, even though the company can claw them back if you leave before vesting. Your Rule 144 clock starts at grant.
A Restricted Stock Unit (RSU) is a contractual promise to deliver shares later, once you vest. You do not own any securities until the RSU settles and the shares hit your account. Your Rule 144 clock starts on the delivery date, not the grant date. An RSU holder at a reporting company therefore waits the full vesting period and then six months more before selling under Rule 144.
Identifying the start date is not a matter of preference. Selling before the holding period ends is an unregistered distribution regardless of intent, and the sale can be forced to rescind.1U.S. Securities and Exchange Commission. Rule 144 – Selling Restricted and Control Securities
Tacking a Prior Holding Period
If you obtained your shares by converting or exchanging another security from the same issuer, such as exercising a convertible note or swapping preferred for common, Rule 144 lets you tack the earlier holding period. The clock is treated as having started when you acquired the original security.2eCFR. 17 CFR 230.144 – Persons Deemed Not to Be Engaged in a Distribution and Therefore Not Underwriters
A Boundary: Shell Company Stock
Rule 144 is unavailable for shares originally issued by a shell company. If the company later becomes an operating business and files “Form 10 information” reflecting that change, holders can sell one year after that filing, provided the company stays current on its SEC reports during the year.2eCFR. 17 CFR 230.144 – Persons Deemed Not to Be Engaged in a Distribution and Therefore Not Underwriters
Other Rule 144 Conditions Beyond the Wait
Waiting out the calendar is necessary, not always sufficient. Additional conditions attach depending on whether you are an affiliate of the company. An affiliate is someone who controls, is controlled by, or shares common control with the issuer, which in practice means directors, executive officers, and large shareholders.
Current Public Information
Between six months and one year after acquisition, adequate public information about the company must be available. For a reporting company, this means it has been filing all required SEC reports for the preceding 12 months. For a non-reporting company, basic business and financial information must be publicly accessible.2eCFR. 17 CFR 230.144 – Persons Deemed Not to Be Engaged in a Distribution and Therefore Not Underwriters
Non-Affiliates After One Year
If you are not an affiliate, have not been one for at least three months, and have held the shares for at least one year, you can sell freely. No volume limits, no manner-of-sale restrictions, no Form 144 filing, no public information requirement. Between six months and one year at a reporting company, non-affiliates can sell but must confirm the company is current on its filings.1U.S. Securities and Exchange Commission. Rule 144 – Selling Restricted and Control Securities
Affiliates: Ongoing Volume and Filing Rules
Affiliates face restrictions on every sale, even after the holding period ends. In any rolling three-month period, an affiliate cannot sell more than the greater of 1% of the outstanding shares of the same class, or, for exchange-listed stock, the average weekly trading volume for the four calendar weeks before the Form 144 notice is filed.1U.S. Securities and Exchange Commission. Rule 144 – Selling Restricted and Control Securities For thinly traded stock the 1% figure can be small: at a company with 10 million shares outstanding, the cap is 100,000 shares per quarter.
Affiliates must also sell through routine brokerage transactions, with no solicitation of buyers and no more than a standard commission. And they must file Form 144 electronically through EDGAR at the time they place a sell order if the sale in any three-month period exceeds 5,000 shares or $50,000 in total price.3eCFR. 17 CFR 239.144 – Form 144, for Notice of Proposed Sale of Securities
Removing the Restrictive Legend
Restricted shares carry a legend, either printed on a paper certificate or noted in the book-entry record, that stops your broker from placing them on the open market. Even after the Rule 144 holding period is satisfied, no sale happens until that legend is removed.
The usual sequence: you or your broker ask the issuer to remove the legend. Company counsel writes an opinion letter confirming the shares are eligible for public sale under Rule 144. The opinion goes to the transfer agent, which removes the notation and releases the shares to trade.
The legal opinion is the bottleneck. Attorneys typically charge a few hundred dollars, and turnaround varies. If your sale is tied to a specific date, start the request weeks ahead. Nothing trades until the legend is gone.
The Tax Holding Period Is a Separate Clock
Rule 144 tells you when you can legally sell. The tax holding period tells you what you keep. The two run independently.
Shares held for one year or less from the acquisition date produce short-term capital gain, taxed at your ordinary income rate (up to 37% federal in 2026). Shares held more than one year produce long-term capital gain, taxed at 0%, 15%, or 20% depending on your income. The practical result: an employee at a reporting company can legally sell after six months under Rule 144, but doing so taxes any appreciation at the higher short-term rate. Waiting past one year from acquisition can cut the federal rate on the gain roughly in half.
For RSU holders, the tax clock always starts at vesting and delivery. At that moment you owe ordinary income tax on the full fair market value of the shares, and the day after is day one of your capital gains holding period.
For RSA holders, the default is similar in structure: each tranche is taxed as ordinary income at vesting, and the capital gains clock for that tranche starts at vesting. The 83(b) election changes this.
The 83(b) Election and Its 30-Day Window
An RSA holder can file an election under IRC Section 83(b) to pay ordinary income tax on the shares’ fair market value at the grant date rather than at each vesting date. The election must be filed with the IRS within 30 days of the grant. There is no extension, no late filing, no appeal.4Internal Revenue Service. Instructions for Form 15620, Section 83(b) Election
Two effects follow. First, you pay ordinary income tax now on the (usually lower) grant-date value instead of the vesting-date value. If the stock climbs meaningfully between grant and vesting, that shift is where the savings come from. Second, your capital gains holding period begins the day after the grant date instead of each vesting date. Hold the shares more than one year from grant and future appreciation above the grant-date value qualifies for long-term rates, even for tranches that have not yet vested.
The election does not change the Rule 144 clock. RSA holders’ SEC clocks already start at grant. The 83(b) is purely a tax mechanism, and it is only available for RSAs: an RSU is not property you can elect on until shares are delivered.
The 3.8% Net Investment Income Tax
Higher earners pay an additional 3.8% net investment income tax (NIIT) on capital gains. The NIIT applies to the lesser of your net investment income or the amount by which your modified adjusted gross income exceeds $200,000 (single) or $250,000 (married filing jointly). These thresholds are not indexed for inflation and have not changed since 2013.5Internal Revenue Service. Topic No. 559, Net Investment Income Tax
A single sale of appreciated restricted stock can push income past the threshold in that year alone. Layered on top of the capital gains rate, the NIIT brings the effective federal ceiling on long-term gains to 23.8%, and on short-term gains to 40.8%.
Qualified Small Business Stock Under Section 1202
If your restricted stock came from a small C corporation, a longer holding period can wipe out federal tax on much or all of the gain. Section 1202 excludes some or all of the capital gain on qualified small business stock, depending on how long you hold it.6Office of the Law Revision Counsel. 26 USC 1202 – Partial Exclusion for Gain From Certain Small Business Stock
For stock issued on or after July 5, 2025, following changes enacted in the One, Big, Beautiful Bill Act, the exclusion phases in:
- Three to four years: 50% of the gain is excluded
- Four to five years: 75% is excluded
- Five years or more: 100% is excluded
Excluded gain is also exempt from the NIIT. Any portion not excluded is taxed at 28% rather than the standard long-term rate.
To qualify, the issuer must be a domestic C corporation with aggregate gross assets of no more than $75 million at the time of issuance (raised from $50 million for stock issued on or after July 5, 2025). At least 80% of the corporation’s assets must be used in an active qualified trade or business, which excludes fields like professional services, banking, and real estate. The per-taxpayer, per-issuer exclusion cap is the greater of $15 million or 10 times your adjusted basis in the stock.6Office of the Law Revision Counsel. 26 USC 1202 – Partial Exclusion for Gain From Certain Small Business Stock
Most public-company employees will never touch Section 1202. For startup employees holding stock in a small C corporation, the five-year mark can matter more than any other date on the calendar. Zero federal tax on a gain that would otherwise cost 23.8% is worth planning around.