10b5-1 Plans: How Executives Sell Stock Without Insider-Trading Risk

A 10b5-1 plan is a written stock-trading plan you adopt in advance, at a time when you hold no material nonpublic information (MNPI), that locks in the amount, price, and timing of future sales. Because the plan makes each trade rather than you, it gives you an SEC safe harbor from insider-trading liability under Rule 10b-5, even if you know inside information when the sales execute. A trading window, by contrast, is just a compliance calendar, not a legal safe harbor.

How the Safe Harbor Works

Rule 10b5-1 defines insider trading as trading "on the basis of" MNPI, and a senior employee almost by definition knows things the market does not. The safe harbor separates the decision from the execution: you commit in writing while you are clean, a cooling-off period passes, then sales run automatically through your broker on the schedule you set. You are not deciding in the moment, so you are not trading on inside information.

Meet the SEC's formal requirements and the plan protects you from civil and criminal liability. For a VP, director, or named executive officer, it is often the only responsible way to diversify.

The 2023 Rule Update Changed the Math

The SEC tightened the rules in February 2023. The biggest change: officers and directors must now observe a cooling-off period of the later of 90 days after plan adoption or the first quarterly or annual filing after adoption, capped at 120 days.

Also new: single-trade plans are limited to one per 12-month period per person, multiple overlapping plans are prohibited in most circumstances, and every plan must include a representation that you are not aware of MNPI and are entering the plan in good faith. The plan must be a genuine advance commitment, not a mechanism to time trades behind a legal fig leaf.

When a Plan Beats Trading Windows Alone

Most people who need a 10b5-1 plan do not think of themselves as insiders. But if you are a VP of Engineering, a senior finance leader, or a product executive who sees revenue data or deal flow before the public does, you likely hold MNPI at some point in any given quarter, and a window that opens 48 hours after earnings does not erase what you knew before the release.

Windows alone work for infrequent, smaller transactions when your MNPI access is episodic. A plan becomes essential in three situations: you are a Section 16 insider, you need to unwind a concentrated position across multiple quarters, or your role gives you ongoing MNPI access that makes clean windows rare.

I had a client, a VP at a mid-cap software company, who sat on a concentrated position for three years because she never felt confident a window was clean. That was avoidance, not a strategy, and her equity was more than 60% of her net worth. A plan gave her a schedule, protection, and a path to diversify.

How This Connects to Equity Compensation

The sell decision is one piece of the equity puzzle. This page covers the legal infrastructure for selling; taxes, timing, and position sizing compound around it. Start with the equity compensation guide for how RSUs, ISOs, and NSOs fit in.

Frequently Asked Questions

Does a 10b5-1 plan have to be approved by my company's legal team?

Most public company policies require pre-clearance of a plan before it is established, typically by the General Counsel or Chief Compliance Officer. Never set one up without that step.

Can I modify or cancel a plan after it is set up?

Certain modifications effectively terminate the existing plan and trigger a new cooling-off period. Canceling is generally permitted, but frequent cancellation and re-adoption is a pattern the SEC has flagged as potentially manipulative.

Do I still have Section 16 reporting obligations?

Yes, trades that execute under the plan still appear on Form 4 within two business days for Section 16 insiders. The plan protects you from insider trading liability, not from disclosure obligations.

Can I have both a 10b5-1 plan and trade through open windows?

You can trade during open windows for transactions outside the plan, but any window trade will be scrutinized against your plan activity. Most compliance officers advise executives with active plans to channel all selling through the plan.

What to Do Next

1. Check your title and role against your company's insider trading policy. If you are a VP or above, or if you regularly see financial data before public release, confirm whether a plan is required or recommended.
2. Talk to your company's General Counsel or compliance team about their 10b5-1 pre-clearance process before you approach a broker.
3. Work with a financial advisor to map the tax implications of planned sales before the plan is adopted, because the timing and structure of sales affects your tax year significantly.
4. If you are already diversifying through trading windows and have not thought carefully about MNPI exposure, schedule a conversation with a fiduciary advisor who works with equity compensation regularly.

The information provided is for educational purposes only and does not constitute investment, legal, or tax advice. Tax law changes frequently — verify current rules before acting. Consult with qualified professionals for guidance specific to your situation.