Most pre-IPO shareholders think about selling in the abstract for months before they take any concrete step. Then a milestone happens — a funding round closes, an IPO filing drops, a strategic deal is announced — and suddenly everyone wants to sell at the same time. The window that looked wide a quarter ago has narrowed sharply.

Timing a secondary sale well means reading the milestone calendar before it becomes obvious to everyone else. This article is a framework for doing that, with attention to the mechanics that actually determine whether a deal closes and at what price.

The milestones that move secondary prices

Not all company news affects secondary liquidity equally. Some events expand the buyer pool and lift prices. Others freeze the market entirely. Knowing which is which lets you position yourself ahead of the crowd.

New primary funding round
Typically positive for secondary prices in the short term, because buyers gain a fresh reference point for valuation. Supply often spikes simultaneously as employees take the signal to sell, compressing the price benefit.
IPO filing (S-1 or F-1 submitted)
Demand from public-market investors who cannot yet buy creates a brief surge in secondary interest. Lock-up periods imposed at IPO (commonly 180 days) mean selling after the filing but before the IPO is often the last clean secondary window.
Tender offer by the company or a lead investor
Tender offers set a floor price and a participation cap. If you can participate, tendering is the path of least resistance. If you cannot — perhaps your shares are not eligible — a simultaneous open-market secondary often prices at or near the tender price, giving you an indirect floor.
Revenue or product milestone announcements
Publicly disclosed metrics (ARR milestones, customer count records) bring in new buyers unfamiliar with the name. These windows are short; sophisticated buyers adjust quickly once a new data point is absorbed.
Regulatory, litigation, or geopolitical headwinds
Buyer demand contracts sharply. Sellers who act before these events crystallize avoid the widest bid-ask spreads. Sellers who wait may find no liquid market at all for weeks.

The mechanics that sellers frequently underestimate

Even if you pick the right moment to sell in principle, three operational factors determine whether your transaction actually closes — and at what net price.

Right of first refusal (ROFR)

Most private company equity grants contain a right of first refusal, which gives the company (and sometimes existing investors) the right to match any third-party offer before you can transfer shares to an outside buyer. ROFR exercise periods typically run 30–60 days from when the company receives formal notice of your intended sale.

The timing implication: if you initiate a secondary transaction two months before a milestone event you believe will lift prices — say, a rumored funding round — the company's ROFR clock may expire right as that news breaks, handing the economic benefit to the company rather than your buyer. The better approach is to initiate the process early enough that ROFR clears before the catalytic window, or to use a marketplace that processes ROFR in parallel with execution documentation to compress the overall timeline.

Lock-up periods

A lock-up is a contractual restriction on selling shares, most commonly triggered at an IPO. Standard IPO lock-ups restrict insiders and employees from selling for 180 days after listing. Some companies negotiate shorter or longer windows; some introduce tiered release schedules that free up tranches of shares at 90, 120, and 180 days.

Lock-ups apply to shares held directly after an IPO. If you sell on the secondary market before the IPO, the buyer (typically through an SPV) takes on exposure with the expectation of receiving registered shares after lock-up expiry. Buyers price in that waiting period. Selling before an IPO filing is generally earlier in the price discovery curve; selling after the IPO is announced but before lock-up expiry means the buyer's hold is visible and bounded, which can support a tighter spread.

Transfer eligibility under your grant documents

Not every equity instrument is transferable in the same way. Unvested stock options cannot be sold. ISOs (incentive stock options) are generally not transferable except by will or inheritance. RSUs that have vested and been settled into shares are transferable, subject to ROFR and any company consent requirements. NSOs (non-qualified stock options) may be exercisable before a sale depending on company policy.

Before approaching a marketplace, pull your grant agreements and confirm: what is vested and settled, what requires exercise, and what the company's written transfer policy says about consent timelines. This step is often the difference between a 10-day transaction and a 90-day one.

Constructing your personal milestone calendar

The information asymmetry in private markets is real but not total. The clearest signal of where you are in the cycle is the company's last financing round — see our deep-dive on secondary sale timing around fundraising rounds for the round-by-round pricing pattern. Public signals — SEC Form D amendments, press coverage of fundraising activity, executive departure announcements, job posting surges in go-to-market roles — all carry information about where a company is in its cycle. Building a simple timeline of what you know and what you expect lets you map candidate selling windows.

  • Mark your ROFR period: count forward 30–60 days from when you would formally notify the company of a sale. This is your minimum runway to allow.
  • Mark your vesting cliff or next tranche date: selling shortly before a large vest creates the impression of insider pessimism among sophisticated buyers; selling after gives you more supply to move at once.
  • Mark any known company quiet periods: companies frequently restrict employee transactions in windows around board meetings or anticipated announcements, even if they are private.
  • Mark macro liquidity windows: secondary market activity tends to slow materially in August and December. If your milestone calendar is flexible, avoid those months for a transaction you need to close quickly.
  • Identify the two or three most likely catalyst events for the next 12 months and work backward: how long does execution take, and does that mean you should be initiating now?
The sellers who capture the best secondary prices are not the ones who react fastest to news — they are the ones who begin the process 60–90 days before the market realizes the window is open.

Tax holding period: the variable sellers forget until it is too late

Long-term capital gains treatment in the U.S. requires holding an asset for more than one year. Sellers who have recently relocated should also revisit secondary sale tax residency rules before closing. For shares acquired by exercising options, the holding period begins on the exercise date, not the grant date. For RSUs, it begins on the settlement date.

If you are three months away from crossing the one-year threshold on a significant lot, selling today means paying short-term rates on the full gain. Waiting three months may reduce your effective tax rate by a meaningful margin. The right answer depends on the size of the lot, your marginal rate, and your assessment of whether the secondary price is likely to hold or improve over that quarter.

This is a decision your tax advisor is best positioned to model precisely. What we can say here is that ignoring holding period in the timing calculation is a common and avoidable error.

Starting the process

The single most useful step for a prospective seller is to read your transfer policy and grant agreements before you engage with any buyer. Knowing your constraints — ROFR period, consent requirements, eligible share classes — tells you how much runway you actually have and which milestones you can realistically target.

Once you know your constraints, you can sequence the transaction properly: initiate before the window opens, clear ROFR in the background, and arrive at execution at the moment buyer demand is strongest.

If you are ready to explore what your shares might be worth in today's market, visit our Sell page — we can show you current buyer interest for your issuer before you commit to any timeline.