Share Vesting Agreements in Turkey: Legal Guide for Foreign Startup Founders (2026 Updated Guide)

Learn how share vesting agreements can be structured for foreign startup founders in Turkey, including cliffs, founder departures, share transfers, repurchase rights, acceleration, tax and investor risks.

Share vesting is one of the most important mechanisms used by startups to prevent a founder from leaving the business early while retaining a disproportionate shareholding. For foreign entrepreneurs establishing or investing in a Turkish startup, however, importing a Silicon Valley-style vesting agreement without adapting it to Turkish corporate law can create serious enforcement problems. A contractual statement that a founder owns “25% after one year and the remainder monthly over four years” does not by itself resolve how shares are legally acquired, transferred, repurchased or cancelled within a Turkish company. The vesting model must therefore be coordinated with the company’s legal form, articles of association, shareholders’ agreement, share-transfer restrictions, corporate approvals and exit provisions.

What Is a Share Vesting Agreement?

A share vesting arrangement links a founder’s economic ownership of company shares to continued service or achievement of agreed milestones. Instead of allowing the founder to retain the entire founder stake immediately regardless of future involvement, the arrangement creates consequences if the founder leaves before completing the vesting period.

The commercial objective is straightforward: founders should generally earn their long-term equity through continued contribution to the startup.

Why Do Investors Require Founder Vesting?

An investor may hesitate to finance a startup where one founder can leave immediately after the investment while keeping a substantial percentage of the company.

That situation creates what is often called “dead equity.” The departed founder retains economic rights while the remaining founders and investors must continue building the company with a reduced equity pool.

Vesting is intended to reduce this risk.

Can Share Vesting Be Used in Turkey?

Yes, vesting concepts can be incorporated into Turkish startup structures, but the implementation must be adapted to Turkish corporate and contract law.

The parties should distinguish between the contractual vesting arrangement and the legal ownership of the shares.

Why Foreign Templates Can Create Problems

Foreign startup documents frequently assume corporate mechanisms available under another jurisdiction. Terms such as restricted stock, automatic forfeiture, repurchase at nominal value and automatic transfer may not operate identically in a Turkish company.

Simply translating an American or British vesting agreement into English or Turkish does not make the underlying mechanism enforceable in Turkey.

Limited Liability Company or Joint Stock Company?

The company’s legal form materially affects the structure.

Share transfers in a Turkish limited liability company and transfers of shares in a joint stock company operate under different corporate-law rules. The vesting agreement should therefore be designed after determining the company’s actual legal form.

Reverse Vesting Is Often More Practical

Founder vesting frequently operates through a reverse-vesting structure. The founder may legally receive shares at the beginning, but the company, other founders or another designated party obtains contractual rights concerning the unvested portion if the founder leaves early.

This avoids treating equity as if shares simply appear automatically each month without considering Turkish corporate formalities.

Example of a Four-Year Vesting Schedule

A common commercial structure is four-year vesting with a one-year cliff.

The founder may receive no vested entitlement during the first twelve months. At the first anniversary, 25% becomes vested. The remaining 75% then vests periodically over the following three years.

This is only an example. The schedule can be adapted to the transaction.

What Is a Vesting Cliff?

A cliff establishes a minimum service period before the first portion of equity becomes vested.

For example, under a twelve-month cliff, a founder leaving after eight months may leave with no vested portion under the contractual arrangement, while a founder completing twelve months may reach the first vesting threshold.

The agreement must explain precisely how the consequence will be implemented.

Monthly or Quarterly Vesting?

After the cliff, vesting may occur monthly, quarterly, annually or according to another agreed schedule.

Monthly vesting generally creates a smoother economic result, while less frequent vesting may simplify administration.

Time-Based Vesting

Time-based vesting depends primarily on how long the founder remains involved with the company.

The agreement should define what counts as continued service. A founder may simultaneously be a shareholder, board member, employee, consultant or executive.

These capacities should not be confused.

Milestone-Based Vesting

Some startups link part of the founder’s equity to performance milestones rather than time alone.

Examples may include completion of a technology platform, regulatory approval, revenue targets, financing milestones or successful commercial launch.

Milestones must be objectively measurable.

Avoid Vague Performance Conditions

Terms such as “satisfactory performance,” “sufficient contribution” or “successful development of the company” can create major disputes.

The agreement should identify who determines whether a milestone has been achieved, what evidence is used and whether the decision can be challenged.

What Happens When a Founder Leaves?

The answer should be established before the startup receives significant investment.

The agreement should determine what happens to vested and unvested shares when a founder resigns, is dismissed, dies, becomes incapacitated or otherwise stops working with the company.

Good Leaver and Bad Leaver Provisions

Startup agreements commonly distinguish between a good leaver and a bad leaver.

A good leaver may include a founder leaving because of death, permanent incapacity, termination without cause or another agreed circumstance.

A bad leaver may include serious misconduct, fraud, material breach, competition with the company or another specifically defined event.

The definitions should be precise.

What Happens to Unvested Shares?

A common commercial objective is for unvested shares to become subject to a transfer or repurchase mechanism when the founder leaves.

The legal implementation must be structured carefully. The agreement should identify who can acquire the shares, how the right is exercised, what approvals are required and how the price is calculated.

Can Shares Simply Be Cancelled?

Foreign founders should not assume that a contractual sentence saying “all unvested shares are automatically cancelled” will necessarily produce the intended corporate-law result.

Share cancellation, capital reduction, acquisition of own shares and transfers can involve different legal requirements.

The appropriate mechanism should be selected at the drafting stage.

Repurchase Rights

A vesting agreement may provide a call option or another repurchase mechanism concerning unvested shares.

The agreement should specify the beneficiary of the right, exercise period, notice method, purchase price, payment method and corporate steps required to complete the transfer.

How Should the Repurchase Price Be Determined?

This is often one of the most contentious issues.

Possible approaches include nominal value, original acquisition price, fair market value or another contractual formula. Different prices may apply to vested and unvested shares or to good-leaver and bad-leaver scenarios.

The price mechanism should be examined carefully for enforceability and fairness under the circumstances.

Founder Shares May Become Extremely Valuable

A nominal-price repurchase clause may appear unimportant when the company is worth very little. Several financing rounds later, the same shares may be worth millions.

Ambiguous vesting provisions therefore become substantially more dangerous as the startup grows.

Articles of Association Must Be Reviewed

The shareholders’ agreement cannot be drafted in isolation.

The company’s articles may contain transfer restrictions, approval mechanisms or other provisions affecting implementation of the vesting arrangement.

The documents should be coordinated.

Shareholders’ Agreement and Vesting Agreement

Vesting can be included directly in the shareholders’ agreement or documented separately.

Whichever structure is chosen, there should be no conflict between the vesting provisions, founders’ agreement, investment agreement and articles of association.

Share Transfer Restrictions Matter

The agreement should consider whether the relevant transfer requires corporate approval or compliance with another restriction.

A contractual obligation to transfer shares is commercially weak if the parties have not considered how the corporate transfer will actually be completed.

Pre-Emption Rights Can Interfere With Vesting

Existing pre-emption or first-refusal rights may affect a repurchase following a founder departure.

The documents should clarify whether vesting-related transfers are exempt or how competing rights interact.

Drag-Along and Tag-Along Rights

Vesting should also be coordinated with exit provisions.

If the company is sold while a founder still has unvested shares, the documents must determine whether those shares accelerate, remain subject to vesting or are dealt with under another mechanism.

What Is Vesting Acceleration?

Acceleration allows some or all unvested equity to vest earlier following a defined event.

This is particularly relevant during an acquisition or change of control.

Single-Trigger Acceleration

Under single-trigger acceleration, vesting accelerates when one specified event occurs, commonly a sale of the company.

Investors may resist full single-trigger acceleration because founders could become fully vested immediately before leaving the acquired company.

Double-Trigger Acceleration

Double-trigger acceleration generally requires two events—for example, a change of control followed by termination of the founder within an agreed period.

This can provide founder protection while preserving retention incentives for the buyer.

What Happens During an Investment Round?

New investors will usually review founder vesting during legal due diligence.

They may require existing founders to accept new vesting conditions or reset part of the vesting schedule as a condition to investment.

Founders should understand this possibility before signing a term sheet.

Vesting and Dilution Are Different

Vesting determines whether a founder earns or retains particular equity under the contractual arrangement.

Dilution occurs when new shares are issued and the founder’s percentage ownership decreases.

A fully vested founder can still be diluted during future financing rounds.

Vesting and Employee Stock Options Are Different

Founder vesting should not automatically be treated as an employee stock-option plan.

Founders, employees, advisers and senior executives may receive equity through different structures with different corporate and tax consequences.

Foreign Founders Should Consider Immigration Status Separately

Ownership of shares and authorization to work for the company are separate legal questions.

A foreign national’s status as a shareholder does not automatically determine whether the person may perform employment or executive functions in Turkey.

Intellectual Property Must Be Coordinated With Vesting

A startup can face a serious problem if a departing founder loses unvested shares but continues owning the company’s software, source code, trademark, patent rights or other intellectual property.

Founder documentation should therefore include appropriate intellectual-property transfer and confidentiality provisions.

Source Code Ownership Is Particularly Important

Technology startups should establish whether software was created personally by founders, employees, contractors or a foreign affiliate.

The company should have a clear chain of rights before seeking institutional investment.

Confidentiality Obligations Should Survive Departure

A founder’s departure should not terminate obligations concerning confidential business information, trade secrets, customer data and proprietary technology.

The survival period and scope should be drafted appropriately.

Non-Compete Clauses Require Careful Drafting

Overly broad restrictions may create enforceability issues.

Any post-departure restriction should be assessed according to its duration, geography, activities covered and legitimate commercial purpose.

Founder Duties Should Be Clearly Defined

Vesting disputes frequently arise because one founder believes another is no longer contributing sufficiently.

The agreement should therefore define expected roles, time commitment, responsibilities and circumstances permitting changes.

Part-Time Founders Require Special Attention

If one founder is expected to remain employed elsewhere while another works full-time, using identical vesting conditions may not reflect the commercial arrangement.

The parties should address this before investment.

What If a Founder Stops Working but Remains a Director?

Employment, management, board membership and shareholding are legally distinct positions.

The vesting agreement should define which relationship must continue for vesting to proceed.

What If the Founder Is Dismissed?

The consequences should depend on the reason for dismissal.

A founder terminated without serious misconduct may receive different treatment from a founder dismissed because of fraud, intentional misconduct or material contractual breach.

Death and Disability

The agreement should address what happens if the founder dies or becomes permanently unable to perform their duties.

Possible solutions include partial acceleration, good-leaver treatment or continuation of vested shares through the founder’s estate.

Divorce and Inheritance Risks

Founder shares may also become relevant in family-property and inheritance matters.

Shareholders’ agreements should consider how transfers to spouses, heirs or other successors interact with transfer restrictions and company governance.

Tax Consequences Must Be Reviewed

Equity transfers, repurchases, option arrangements and founder compensation can create tax consequences depending on the specific structure.

Tax analysis should therefore be completed before implementing the vesting model rather than after a taxable event occurs.

Foreign Tax Residence Can Complicate the Structure

A foreign founder may remain tax resident in another jurisdiction.

Cross-border tax consequences should therefore be considered alongside Turkish corporate and tax treatment.

Investors Will Examine Vesting During Due Diligence

Institutional investors commonly ask whether founder equity is subject to vesting and whether the documentation is legally implementable.

Poorly drafted vesting provisions can delay financing or become a condition precedent to closing.

Cap Table Must Reflect the Economic Arrangement

The company should maintain a clear capitalization table showing founders, investors, option pools and relevant vesting information.

The cap table should be consistent with legally issued shares and contractual rights.

Do Not Rely Only on the Cap Table

A spreadsheet showing that a founder is “40% vested” does not itself transfer or cancel shares.

Corporate records and contractual documentation must support the economic presentation.

Dispute Resolution Should Be Planned

Founder disputes can threaten the survival of a startup.

The agreement should contain a workable dispute-resolution mechanism covering vesting calculations, leaver classification, repurchase price and transfer obligations.

Injunctive Relief May Become Necessary

If a departing founder refuses to perform a required share transfer or attempts to dispose of disputed shares, urgent legal protection may need to be considered depending on the circumstances.

Foreign-Law Agreements Need Turkish Review

International investors sometimes require an English-law, Delaware-style or other foreign-law shareholders’ agreement while the operating company remains Turkish.

The interaction between the foreign contractual framework and mandatory Turkish corporate rules should be reviewed carefully.

Due Diligence Before Signing a Vesting Agreement

Foreign founders should verify the company’s legal form, issued share capital, existing shareholders, articles of association, transfer restrictions, investment agreements, option rights, intellectual-property ownership and existing founder obligations before signing.

2026 Practical Strategy for Foreign Startup Founders

A strong Turkish founder-vesting structure should not consist of a single clause stating that shares vest over four years. It should create a complete legal mechanism connecting vesting schedule, cliff, founder duties, good-leaver and bad-leaver events, repurchase rights, transfer procedures, valuation, acceleration, corporate approvals, intellectual property and exit provisions.

For foreign founders, the additional cross-border questions concerning tax residence, foreign-law investment documents and immigration status should also be addressed before the financing round.

Frequently Asked Questions

Can founders use a four-year vesting schedule in Turkey?

Yes, a four-year commercial vesting schedule can be agreed, but the legal mechanism implementing the arrangement should be adapted to Turkish corporate law and the company’s legal form.

Is a one-year cliff mandatory?

No. It is a contractual structure commonly used in startup transactions rather than a universal statutory requirement.

Can unvested founder shares automatically disappear?

The parties should not assume that contractual language alone automatically cancels legally issued shares. An appropriate transfer, repurchase or other corporate mechanism should be structured.

Can a founder keep vested shares after leaving?

Potentially. The answer depends on the leaver provisions, repurchase rights and other terms agreed between the parties.

What is a bad leaver?

It is a contractually defined category generally used for departures involving specified serious circumstances. The definition should be drafted precisely rather than left to subjective interpretation.

Can investors require founders to restart vesting?

An investor may negotiate new or revised founder vesting as a condition of financing. Whether the founders accept it is part of the investment negotiation.

What happens to vesting if the startup is sold?

The documents should specify whether vesting continues, accelerates or becomes subject to another mechanism following a change of control.

Is reverse vesting possible in Turkey?

Reverse-vesting structures can be used, but the repurchase or transfer mechanism must be designed consistently with Turkish corporate law and the company’s constitutional documents.

Should intellectual property be included in founder documentation?

Yes. The startup should ensure that relevant intellectual property is legally controlled by the company independently of whether a founder later leaves.

What is the biggest mistake foreign founders make?

Using a foreign vesting template without creating an enforceable Turkish corporate mechanism for the transfer or repurchase of unvested shares. The commercial vesting schedule and the legal ownership structure must work together.

Client-Focused Legal Support for Foreign Startup Founders

Fırat Fesih Kaya Law Office assists foreign founders, international investors and startups with founder vesting arrangements, shareholders’ agreements, investment documentation, share-transfer restrictions, good-leaver and bad-leaver provisions, founder exits, corporate governance and cross-border startup transactions. Lawyer Fırat Fesih Kaya provides legal support in structuring founder equity arrangements that are commercially suitable for international investment while remaining compatible with the Turkish corporate structure.

Phone: +90 312 434 22 22
Mobile: +90 532 769 22 22
Email: info@firatfesihkaya.av.tr
Address: Mevlana Boulevard No:221, Yıldırım Tower, Office No:148, 06520 Balgat, Çankaya, Ankara, Turkey