ROFN vs ROFR: Key Differences Explained

The table compares the two on what each is, when it starts, who sets the price, who uses it, legal and tax treatment, the main risk, the effect on liquidity and a typical example. Both give one party a head start on buying an asset. They differ on whether an outside offer exists yet.

Right of First Negotiation

1. 1.0
   NoticeThe owner tells the right holder it wants to sell or license the asset.
2. 2.0
   Exclusive talksFor a set period, the two sides negotiate. The owner cannot shop the asset to others.
3. 3.0
   OutcomeThey sign a deal, or the window closes. The owner is then usually free to go to the market.

Some ROFNs add a limit. The owner may not sell to an outsider on terms better than the right holder’s last offer. That turns the ROFN partly into a right of first offer.

Right of First Refusal

1. 1.0
   Outside offerThe holder of the shares finds a buyer and agrees a price and terms.
2. 2.0
   NoticeThe holder sends the company the buyer’s name, the number of shares and the terms.
3. 3.0
   Match or passThe company, and in many cases its investors, can buy on the same terms within the window.
4. 4.0
   SaleIf they pass, the holder can sell to the buyer on those terms within a set time.

In the NVCA model, a template from the National Venture Capital Association, the company gets 15 days and investors 10 more. Astera Labs gave itself 30 days. Its ROFR ended at its IPO. For the full path of a private share sale, see secondary transaction.

It depends on which side you are on. For the party holding the right, a ROFR is stronger. It sees a real market price and can step in at that price. For the owner, a ROFN is lighter. It costs a few weeks of talks, then the owner can sell freely.

Employees usually sit on the owner side of a ROFR. If you hold private company stock, a buyer must wait out the company’s window before closing. Some buyers will not do the work if the deal can be taken from them. That makes private shares harder to sell.

Investors often hold both kinds of rights. A venture fund may have a ROFR on founder shares and pro rata rights in new rounds. A strategic investor, such as a drug company, may ask for a ROFN on a product. Sanofi did so with Vigil in 2024 and bought the whole company a year later.

Neither right creates a tax event by itself. Tax arises when you sell the shares, whether to the right holder or to an outside buyer. The sale is taxed the same way in both cases.

One detail matters for stock you receive for work. US tax rules value such stock without most restrictions on it. The exception is a nonlapse restriction: a permanent duty to sell at a price set by formula. A permanent ROFR at a formula price counts as one. A duty to offer the shares at fair market value does not.

A typical startup ROFR matches a buyer’s price and ends at the IPO. So it does not lower the taxable value of your shares. Get advice if your documents set a formula price.

Right of First Negotiation

For

The owner keeps control of price and timing. Outside buyers are not chilled, because no deal can be taken from them. The right holder gets early, exclusive access.

Against

The right holder may lose the asset to a higher bidder. Talks can tie up the owner and still fail.

Verdict: a ROFN is a light right. It suits a partner who wants a first look and a seller who wants to keep a free hand. It gives the holder access with no promise of a deal.

Right of First Refusal

For

The right holder can keep shares away from unwanted buyers. It pays only a price the market has set.

Against

Every sale takes longer. Buyers may bid less, or not at all, if they can be matched.

Verdict: a ROFR is the stronger right. It lets a private company keep control of its cap table. For a shareholder who wants to sell, it is a real cost in time and in the number of willing buyers.

Before you look for a buyer, find the ROFR in your documents. It can sit in the bylaws, your stock plan or a separate agreement. Note who holds it, how long the window runs and what notice you must send.

Under Delaware law, the restriction must be noted on your certificate or in the share notice. Otherwise it binds only people who actually knew about it. A third right, the right of first offer, sits between the two. See ROFO vs ROFR and tender offer for a company-run alternative.

Common Mistakes

• Using the two terms as oneA ROFN opens talks before any offer. A ROFR matches an offer that already exists.
• Promising a buyer a closing dateThe ROFR window comes first. Under the NVCA model, that is up to 25 days.
• Forgetting the investorsMany agreements give investors a second turn after the company passes.
• Assuming the right lasts foreverStartup ROFRs often end at the IPO, as Astera Labs’ did.

Right of first negotiation (ROFN)

A promise to negotiate exclusively with one party for a set period before offering an asset to others.

Right of first refusal (ROFR)

A right to buy an asset on the same terms an outside buyer has offered.

Right of first offer (ROFO)

A right to receive the owner’s offer first, before it goes to others.

Transfer notice

The written notice a seller sends with the buyer’s name, the shares and the terms.

Nonlapse restriction

A permanent duty to sell at a formula price. US tax rules take it into account when valuing stock.

NVCA model documents

Template venture financing agreements published by the National Venture Capital Association.

Contingent value right (CVR)

A right to an extra payment if a set event happens after a deal closes.

Secondary transaction

A sale of existing shares from one holder to another.

Figures were last checked on November 6, 2026. Corporate law is Delaware law, and tax rules are United States federal rules. Each company’s own documents set the binding terms.