Right of First Refusal (ROFR): How Startup Share Sales Work

A right of first refusal (ROFR) gives a startup, and often its major investors, the right to buy shares an existing stockholder wants to sell to a third party, at the same price and on the same terms the outside buyer offered. It covers existing shares changing hands, not new shares the company issues, which preemptive rights and pro rata rights cover.

Venture-backed companies usually have two layers: a company ROFR in the bylaws or equity documents, and an investor ROFR in the NVCA-style Right of First Refusal and Co-Sale Agreement. Together they largely decide who joins the cap table before an exit. It's a quiet clause until someone tries to sell.

Definition: A right of first refusal is a right that requires a stockholder who receives a bona fide offer to sell shares to first offer those shares, at the same price and terms, to the company and then to designated investors, who may buy all or part of them before the shares can go to the outside buyer.

Company ROFR vs. investor ROFR

Cooley GO explains that a company ROFR in the bylaws automatically applies to all shares issued after the bylaws are adopted, and that it can also sit in option award agreements. Bylaws increasingly also require board approval of any transfer. Startup lawyer Ryan Roberts recommends limiting a bylaw ROFR to common stock so it does not restrict preferred shares by accident.

The investor layer comes from the financing round. NVCA's model Right of First Refusal and Co-Sale Agreement, last updated in April 2026, binds "Key Holders," typically the founders. Nixon Peabody covers it alongside the voting agreement, which handles board seats and drag-along rights.

How the right of first refusal works, step by step

McCarter & English's Anatomy of a Term Sheet describes the standard order: the company buys first, and investors can buy what the company passes on. A typical sequence:

1. Bona fide offer. The seller needs a real third-party offer.
2. Transfer notice. The seller sends the buyer, price, and terms to the company and investors.
3. Company election. The company decides whether to buy some or all of the shares.
4. Investor election. Investors may buy what the company declines, pro rata among themselves.
5. Over-allotment. Investors who take their full share can buy what other investors decline.
6. All-or-none. McCarter notes some agreements give the ROFR effect only if the company and investors together buy all the offered shares.
7. Co-sale. For shares not bought, investors can sell a proportional amount of their own shares to the buyer on the same terms.
8. Closing window. Agreements typically require the seller to close within a set period, on terms no better than noticed, or start over.

A worked example with real timelines

Windows are negotiated, and they add up. As one example, the NVCA-style agreement Provention Bio filed with the SEC gives the company 15 days after the transfer notice, investors 10 more days, an extra 10-day over-allotment option, and 15 days for co-sale elections, and requires the sale to the outside buyer to close within 45 days of the notice or the process starts over (purchases by the company and investors close by day 45 or a later date named in the notice). Other agreements use different windows.

As an illustrative example, apply that to a co-founder with an offer of $4.00 per share for 200,000 shares, an $800K sale. The company declines within its 15 days. Two funds use their 10-day window to buy 150,000 shares for $600K. With no all-or-none condition, the remaining 50,000 shares ($200K) can go to the outside buyer at $4.00, subject to the investors' co-sale right, and under that agreement the sale would need to close by day 45.

Standard exemptions

McCarter & English notes that both rights usually allow estate-planning transfers, and that a "limited liquidity" exception letting founders sell a small percentage of their shares is increasingly common. Nixon Peabody adds that transfers to competitors or sanctioned parties are typically prohibited. The rights generally end at an IPO or a sale of the company; after an IPO, resales are governed by securities rules such as SEC Rule 144.

Why investors want a right of first refusal

Control of the cap table. A ROFR can let insiders keep out a competitor or an unaligned buyer. A stranger holding a founder's block is the kind of cap table entry that raises questions later (our take on reading the cap table).

Buying at the secondary price. When a founder or employee sells, the ROFR lets investors buy at that price. Carta's data on company-run tender offers held at least a year after a primary round shows a median discount of zero, but at least a quarter of those tenders carried double-digit discounts. Our guide to tender offers and secondary sales covers how founders run a company-organized sale.

Alignment. Co-sale means that if a founder gets liquidity, investors can share it. That matters more as companies stay private longer: Carta administered 71 tender offers worth about $3 billion in the first half of 2026, the highest first-half figures in at least six years, with nearly 70 percent at Series C or later. The guide to a liquidity event covers the wider secondary market.

"A ROFR just traps founders' equity"

From the seller's chair, it can feel that way. Every window is time a buyer has to wait, and buyers walk when windows stack up. A founder ten years in may want some cash without asking a dozen funds.

We'd separate the clause from its settings. The right is a fair trade for investors who backed the company early; the windows, thresholds and carve-outs are where protection turns into friction. Keep the ROFR and negotiate the details.

What founders and employees should negotiate

Asks worth considering:

• Limit the investor ROFR to founders and executives, or holders above a minimum percentage.
• Shorten the windows and run the company and investor elections at the same time.
• Add a limited liquidity exception for a modest percentage of founder shares.
• Exempt small sales below a threshold from co-sale.
• Exempt transfers in a company-run tender offer the board has approved.

For the company's view of these terms, see the founder-side term sheet guide.

How a new investor should read a ROFR

For an angel or small fund, the investor ROFR generally helps only if you are in the group that holds it, usually Major Investors; otherwise you typically get no right to buy and no co-sale when a founder sells. If you're buying a founder's shares, assume both layers exist and that insiders may take the block. Your offer may simply set the price for someone else.

Secondary mechanics like this one are easiest to learn by watching a fund work through them, which is what 1752vc's Emerging Angels offers accredited investors who are new to angel investing: an 8-week live program with a seat at the table in a working fund's investment process, diligence calls and deal reviews included.

The bottom line

A ROFR is about who gets to own the company, not just at what price. Founders should know where theirs lives and what it exempts before the first secondary offer arrives; investors should know whether they actually hold one. That's our read; your documents are what count.

The outside buyer names the price.

The ROFR decides whose name goes on the shares.

Key takeaways

• A ROFR gives the company, then usually its major investors, the first chance to buy shares a stockholder wants to sell, on the buyer's terms.
• It covers existing shares only; new issuances fall under preemptive or pro rata rights.
• Startups often have two layers: a company ROFR in the bylaws or equity agreements, and an investor ROFR with co-sale for Key Holders.
• A typical sequence is notice, company election, investor election with over-allotment, co-sale, then a deadline to close with the buyer.
• Exemptions usually cover estate planning and a small founder liquidity carve-out, and the rights end at an IPO or a sale.

Frequently asked questions

What is a right of first refusal in a startup?

It is a right that requires a stockholder who wants to sell shares to a third party to first offer them to the company, and often then to major investors, at the same price and terms. Only shares the company and investors decline can be sold to the outside buyer, usually within a fixed closing window.

What is the difference between a right of first refusal and a right of first offer?

A right of first refusal is triggered by an actual third-party offer, which the rights holder can match. A right of first offer requires the seller to offer the shares to the rights holder before looking for outside buyers, so there is no outside price to match. In venture documents, "right of first offer" usually means the investor's right to buy new shares in future rounds.

How long does the right of first refusal process take?

It depends on the agreement. In one NVCA-style agreement filed with the SEC, the company had 15 days, investors 10 more days plus a 10-day over-allotment option, and the seller had to close within 45 days of the original notice. Founders often ask for shorter or concurrent windows.

Do employee shares have a right of first refusal?

Usually, yes. Cooley GO notes that private company common stock is often subject to a company right of first refusal, placed in the bylaws, in option award agreements, or both. Employees who exercise options are then typically required to offer their shares to the company before selling them to an outside buyer.

What is a co-sale right?

A co-sale or tag-along right lets investors sell a proportional share of their own stock to the buyer, on the same terms, when a founder or Key Holder sells shares that were not bought under the ROFR. It is designed to stop founders from getting liquidity that investors cannot share.

Sources

• NVCA: Model Legal Documents
• Cooley GO: Secondary Sales of Private Company Stock
• Nixon Peabody: Key shareholder documents, Voting agreement, ROFR, and co-sale rights
• McCarter & English: Anatomy of a Term Sheet, Series A Financing
• SEC EDGAR: Provention Bio, Right of First Refusal and Co-Sale Agreement (Exhibit 10.12)
• Startup Lawyer (Ryan Roberts): Right of First Refusal in Company Bylaws
• Carta: Tender-Offer Activity Reaches a Four-Year High (H1 2026)
• SEC: Rule 144, Selling Restricted and Control Securities