IPO Lockup Expiration: What to Do With Your Stock Options When It Ends

Your company went public. For 90 to 180 days you've been watching the stock price while legally prohibited from selling a single share. Then lockup expires — and suddenly you have to make several of the biggest financial decisions of your life, simultaneously, under time pressure.

Most tech employees underplan this moment. They either sell everything immediately (maximizing taxes) or hold too long out of loyalty (maximizing concentration risk). A deliberate strategy, built before lockup expires, is worth real money. This guide walks through the mechanics and the decisions.

What an IPO Lockup Agreement Is

A lockup agreement is a contractual commitment between the company (and its shareholders) and the IPO underwriters. It restricts insiders — employees, founders, investors — from selling shares for a specified period after the IPO. The purpose is to prevent a flood of insider selling from depressing the stock price during the critical weeks after the offering.

Lockup agreements are private contracts, not SEC rules. The terms vary:

Read your specific lockup agreement. The term "180-day lockup" is market convention, not law — your deal may differ, and some agreements have staggered release dates or early-release provisions tied to stock price performance.

What You Can and Cannot Do During Lockup

During the lockup period you cannot sell, transfer, pledge, hedge, or otherwise dispose of your shares or options. This includes:

• Open-market sales
• Short sales, puts, or any derivative that functions as a sale
• Pledging shares as collateral for a loan
• Transferring to a trust or family member (in most agreements)

What you can typically do during lockup:

• Exercise stock options — you just can't sell the resulting shares until lockup ends
• Set up a 10b5-1 trading plan — in fact, this is the optimal time, because the 90-day cooling-off period for non-officers (120 days + next earnings date for officers) runs during lockup¹
• Plan your sell-down strategy — mapping your lots, modeling tax scenarios, hiring a specialist advisor

Smart Moves to Make During Lockup

1. Exercise ISOs to Start the Qualifying-Disposition Clock

If you still hold unexercised ISOs, exercising them during lockup starts the 1-year holding period for qualifying disposition treatment. The qualifying-disposition test requires holding at least 1 year from exercise AND 2 years from grant. If you exercise during the 180-day lockup and your grant date was more than 2 years ago, you'll clear the 2-year hurdle — and after lockup expires plus a few months of holding, you'll clear the 1-year exercise hurdle too.

Tax difference: On a $1M ISO spread, qualifying-disposition treatment (15% LTCG vs. 37% ordinary income) saves roughly $220,000 in federal tax. The 180-day lockup window may be the last practical opportunity to start that clock.

AMT warning: Exercising ISOs creates an AMT preference item. Model your AMT exposure before exercising — especially if you already have significant AMT liability. Use our ISO AMT calculator to find your safe exercise zone. See also: AMT and ISO exercise guide.

2. Set Up a 10b5-1 Plan While Locked Up

A 10b5-1 plan allows insiders to schedule future stock sales in advance, providing an affirmative defense against insider-trading claims. Under the SEC's 2022 amendments (effective February 2023), officers and directors must wait for the later of 90 days after plan adoption or the next quarterly earnings announcement (not to exceed 120 days) before trading under a new plan. Non-officers/non-directors face a 30-day cooling-off.

If you adopt your 10b5-1 plan during lockup, the cooling-off period runs concurrent with lockup. When lockup expires, your plan may already be operative — meaning you can begin trading immediately under a pre-established schedule rather than making ad-hoc decisions each day.

3. Map Your Lot Inventory

Before you sell a share, know exactly what you own. Different lots have different tax treatment:

At Lockup Expiration: The Tax Decisions

Which Lots to Sell First

Use specific identification (not FIFO) to choose which shares you sell. The general principle: sell high-basis, short-term-taxed lots first (especially disqualifying-disposition ISOs you can't avoid triggering), and hold long-term qualifying lots as long as the concentration risk permits.

For lots where you have choice, HIFO (highest-in, first-out) minimizes the realized gain per dollar of proceeds — but make sure "highest basis" shares are also long-term before you select them. A high-basis lot that's only 9 months old still creates a short-term gain taxed at ordinary rates up to 37%.

2026 LTCG Rate Management

For 2026, the federal LTCG rate thresholds are:²

• 0% — taxable income up to $49,450 (single) / $98,900 (MFJ)
• 15% — taxable income $49,451–$545,500 (single) / $98,901–$613,700 (MFJ)
• 20% — taxable income above $545,500 (single) / $613,700 (MFJ)
• +3.8% NIIT — applies when MAGI exceeds $200,000 (single) / $250,000 (MFJ), for a combined 23.8% top rate on qualifying gains

If your pre-sale income (salary, bonus, vested RSUs) already puts you above $545,500, every additional qualifying gain is taxed at 23.8%. Spreading sales across multiple years — say, 25% of your position per year over 4 years — keeps annual realized gains more manageable and may allow you to recover AMT credits in years when your LTCG rate drops. See: post-IPO diversification sell-down playbook.

Don't Let AMT Credits Sit

If you exercised ISOs and paid AMT in prior years, those payments created a recoverable credit (Form 8801). Selling ISOs in qualifying dispositions generates regular tax that can absorb the credit. The post-lockup period — when you're likely recognizing significant capital gains — is the natural time to model how much AMT credit you can recover. See: AMT credit carryforward guide.

Disqualifying Disposition Trade-Off

Sometimes a disqualifying disposition (selling ISOs before qualifying disposition requirements are met) is the right call despite the ordinary income rate. If the stock has dropped sharply since your exercise, selling now at a loss (against your AMT basis) may save more than holding for qualifying treatment. This is a scenario-specific calculation — the type a specialist advisor runs in their sleep.

Rule 144 and Insider Restrictions

If you're an officer, director, or 10% shareholder ("control person" under SEC Rule 144), you face additional restrictions even after lockup expires:³

• Volume limits: Sales in any 90-day period cannot exceed the greater of 1% of outstanding shares or the average weekly trading volume over the prior 4 weeks
• Manner of sale: Must be sold in broker transactions or directly with a market maker
• Form 144 filing: Required when the amount to be sold exceeds 5,000 shares or $50,000 in a 90-day period

If you're a rank-and-file employee (not a control person), Rule 144's volume limits don't apply to your registered shares (Form S-8 covers employee equity plans). But blackout windows — the company's internal trading-window policy — still apply after lockup. You generally may only trade during the open window following each quarterly earnings release.

Mistakes to Avoid at Lockup Expiration

1. Selling all shares on day one. Tax cost of front-loading is enormous. Day-one sellers crystallize a massive gain in a single year, often pushing into 23.8% federal LTCG territory plus state tax. Spreading sales over 2–4 years almost always lowers the effective rate — if the stock holds value.
2. Selling nothing because you believe in the company. Concentration risk is real. A single-stock position representing 80%+ of your net worth is a financial planning failure, regardless of your conviction. Most employees who hold too long through an IPO sell eventually — just at lower prices.
3. Forgetting about quarterly blackout windows. Even after lockup, you cannot trade freely. Most companies restrict trading to a 2–3 week window after earnings. Plan your sales around these windows.
4. Missing the 10b5-1 setup window. If you don't adopt your plan while locked up, you'll face a 30–120 day cooling-off after lockup expires before you can trade under it. This gap creates improvised selling decisions that often don't hold up to scrutiny.
5. Ignoring state tax timing. If you're considering a state residency change (CA → TX or FL), get that move complete before the taxable event — not during. California will source your gain to in-state workdays if your grant or exercise occurred while you were a CA resident. See: California stock options tax guide and multi-state sourcing guide.

When to Bring in a Specialist

Most of the decisions above interact: exercising ISOs during lockup affects your AMT, which affects your qualifying-disposition strategy, which affects your lot-selection order, which affects your LTCG bracket management, which determines how fast you should diversify. These are not independent choices — they're a system that needs to be modeled together.

An advisor who has run these scenarios many times will build the full model before lockup expires: what AMT exposure looks like at various exercise levels, which lots to prioritize selling, what the multi-year sell-down schedule looks like under different price scenarios. The decision cost of getting this wrong routinely exceeds $100,000 in avoidable tax — and the 180-day lockup period is the last time you have to do this work without time pressure.