Secondary sales and tender offers for private shares
How employees turn private stock into cash before an IPO, what the price really means, what it taxes, and how much you should actually sell.
Hybrids & more · Rules & mechanics
Can you sell your startup shares before the company goes public? Sometimes, and the path is a secondary sale or a tender offer. But private stock is not yours to sell freely the way public stock is. The company usually holds a veto, the price on the table is not the price on your grant paperwork, and even when you can sell, the tax and the risk are not what people assume.
This is the complete guide to early liquidity in a private company. I will cover the two ways out and who controls each, why the offer price differs from your 409A valuation and which number actually hits your wallet, the tax fork that turns on one question, the diversification decision that is the real reason to sell, and the QSBS clock that can cost you a fortune if you sell at the wrong moment. Read it before any tender lands in your inbox.
The two ways out
A secondary sale is you selling your private shares to an outside buyer, often a fund or a wealthy investor, while the company is still private. A tender offer is the company organizing a window where many employees can sell some shares at a set price, usually to investors or back to the company itself.
The difference matters, and one of these you do not get to start yourself.
A tender offer
The company organizes a window where eligible employees can sell some shares at a set price, usually to incoming investors or back to the company. There is often a cap on how much each person can sell. Most employees get their first real liquidity this way, on the company’s timeline, not their own.
A secondary sale
You find an outside buyer for your shares while the company is still private. This is something you go arrange, and the company usually holds a veto over it through transfer restrictions and a right of first refusal. The price is set by negotiation.
Caution
Most private companies control transfers of their stock. Right-of-first-refusal clauses, transfer restrictions, and board approval can all stand between you and a sale. Read your stock agreement before you assume you can sell a single share, because the company’s veto is real, and it comes first, before any tax question.
How a tender offer window usually works
A tender is the company’s event, not yours, and it runs on a fixed shape. A buyer commits to purchase a set dollar amount of employee stock at a fixed per-share price. The company opens a window, sends eligible holders the offer documents, and gives you a hard deadline to opt in. There is almost always a per-person cap on how much you can sell, so you choose a number inside that limit, weighing cash today against the upside you give up. You take the terms or you wait for the next window, which may never come. The price is set for you, not negotiated. Read the offer documents and your stock agreement before you decide anything, because the eligibility rules and the cap are spelled out there, not assumed.
Why the price differs from your 409A
Here is the first thing that confuses people: the price someone offers for your shares often looks nothing like the 409A value on your grant paperwork. That is not a mistake. They answer two different questions.
The 409A valuation is an independent appraisal a private company gets to set the fair market value of its common stock. Its main job is tax safety: it fixes the strike price on your options so the IRS does not later call your grant underpriced and punish you for it. Companies have a reason to want it conservative. A secondary price, by contrast, is set by supply and demand. An investor wants in, you want out, and the clearing price is whatever the two of you agree on. It often reflects the latest preferred round, the buyer’s appetite, and the company’s momentum, not a careful appraisal of common stock.
Why the secondary price usually runs higher
The 409A values common stock, and it tends to come in below the preferred price investors paid, because common sits behind preferred in line. A secondary buyer is often pricing off that preferred round and the company’s growth story. So the number a buyer offers can sit well above the 409A on your grant. Same company, two very different figures.
The last preferred round
The most recent priced round is the anchor everyone watches. A fresh, high round pulls secondary bids up. A flat or down round pulls them down.
Where common sits versus preferred
You almost certainly hold common. Preferred shareholders get paid first in a sale, so common is worth less per share. A serious buyer prices that gap in.
Demand and the company's story
A hot company with investors fighting to get in commands a premium. A quiet one trades at a discount, if it trades at all. The price is a negotiation, not a fact.
The tax turns on one question: do you already own the stock?
This is the fork that catches people. The tax on a secondary depends entirely on whether you hold real shares already, or have to exercise options to get them.
You exercised long ago, so you hold real stock. A secondary sale is a capital gain over your basis, long-term or short-term by how long you have held. The 409A is behind you. Clean and simple.
You exercise options into the tender. The spread between the strike and the current value is taxed now, ordinary income on an NSO or possible AMT on an ISO. A rising 409A or secondary price widens that spread and the bill. Then the sale adds its own gain on top. Selling freshly exercised ISO shares can also be a disqualifying disposition, which turns the break into ordinary income.
So the 409A is not just trivia. It sets your option strike, and if you exercise before selling, it drives the tax you owe on the spread. The person selling already-owned stock has a clean capital gain. The person exercising-to-sell has a layered bill, and the gap between a low strike and a high secondary price is exactly what makes that bill fat.
Whether your gain is long-term or short-term turns on the holding period: more than a year and it is long-term, a year or less and it is short-term, taxed as ordinary income. For 2026 the long-term rates run 0% up to $98,900, 15% up to $613,700, and 20% above that for married filing jointly 2026, and 0% up to $49,450, 15% up to $545,500, and 20% above that for single filers 2026, with the 3.8% net investment income tax on top once income clears $250,000 married filing jointly or $200,000 single 2026.
The hidden price of the headline number
A juicy secondary number is not free money waiting for you. Three things can each take a bite the price tag never shows.
First, the company usually controls the sale, through the right of first refusal, transfer restrictions, and board approval that can sit between you and any buyer no matter the price. Second, a big gap between a low strike and a high secondary price means a fat taxable spread if you exercise to sell, so the after-tax cash is smaller than the sticker. Third, selling early can break a QSBS holding clock and forfeit a large federal exclusion.
Caution
A high secondary price is a real signal that your paper wealth grew. It is not a promise you can sell at that number, keep all of it, or sell at all. The veto, the spread, and the QSBS clock can each take a bite the price never shows.
Diversification is the real reason to sell
Here is the second-order question most people skip. Should you sell at all, and if so, how much? The case for selling some shares early is not greed, it is survival. If your salary, your bonus, and your entire net worth all ride on one private company, you are not an investor in that company. You are a hostage to it.
I do not manage money for people who can live forever. A concentrated private position is exactly the kind of bet that can erase years of work if it breaks the wrong way, and private stock breaks quietly. There is no daily price to warn you, no easy exit when sentiment turns, and the down round you never see coming can cut your paper fortune in half between two financings.
So the question is not all-or-nothing. Sell enough to be safe. Keep enough to stay in the game.
The second-order trap: optimizing for the wrong thing
The most common mistake I see in pre-IPO holders is letting the tax tail wag the dog. People hold a wildly concentrated position to chase a lower rate or a QSBS exclusion, and call it a plan. Saving on the rate means nothing if the stock you are clinging to falls before you ever sell. The rate is a discount on a gain. Diversification protects the gain itself.
The QSBS clock can cost you either way
Selling at the wrong moment can forfeit one of the largest breaks in the tax code, and holding blindly to protect it can sink you in concentration risk. Both directions have a price.
Could selling early hurt my QSBS treatment?
It can. If your shares are QSBS, the exclusion rewards holding for the required period, and selling before you clear it can forfeit a large tax break. Worse, certain company redemptions around the time you got your stock can damage the qualification entirely. If QSBS might be in play, check the holding clock before you join a tender. Sometimes selling a partial position to diversify, while holding a core block past the QSBS date, is the move that gets you both safety and the break.
How much should I sell in a tender offer?
There is no single number, but the framing is simple: enough that a company blowup would not derail your life, not so much that you have abandoned the upside you helped build. For someone whose net worth is almost entirely one private stock, taking a meaningful slice off the table is rarely the wrong call. The exact size depends on your other assets, your runway, and how much of the position is QSBS you want to protect.
Does a high secondary price raise my 409A and my future strike?
It can. Companies factor recent secondary transactions into the next 409A, especially when the volume is meaningful. A wave of high-priced secondaries can lift the appraised common value, which raises the strike on options granted after that. Good for the paper value of what you hold, more expensive for anyone exercising new grants later.
What this means for you
If a secondary sale or tender offer is on the table, start with two questions before the price even matters: do I already own these shares or do I have to exercise first, and how much of my net worth is riding on this one company? The first decides your tax. The second decides how much you should sell.
Then line up the rest: your stock agreement and the company’s transfer rules, because the veto comes first; the taxable spread if you have to exercise to sell; and any QSBS clock you might break. Do not read your 409A as what your stock is worth, and do not read a secondary offer as cash in hand. Liquidity in a private company is rare and worth using well, which usually means selling enough to be safe and keeping enough to stay in the game. When a chunk of your net worth is riding on one private stock, a fit check before you sell is the cheapest risk control you have.
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