The Pay Defteri (Share Register) is the official ledger of a Turkish Anonim Şirket (A.Ş.) recording ownership of registered shares (nama yazılı paylar) — who owns which shares, when ownership transferred, and any restrictions or pledges affecting the shares. Mandated by TTK Article 499, the pay defteri is the single source of truth for shareholder identity in companies with registered shares and is the operational mechanism through which share transfers become effective against the company and third parties.
The pay defteri must record for each shareholder: (i) full identity (name, citizenship, address for individuals; corporate name and registry for legal entities); (ii) number and serial numbers of shares held; (iii) share class (common, preferred, etc.); (iv) date of share acquisition; (v) transferor identity for transferred shares; (vi) pledges, usufructs, or other limited rights affecting the shares; and (vii) any voting trust or proxy arrangements. The board is responsible for maintaining the pay defteri and the chairperson is personally accountable for its accuracy and timely updating.
Share transfer effectiveness depends on pay defteri registration. Under TTK Article 499, registered-share transfers require: (i) endorsement of the share certificate by the transferor (or assignment instrument for uncertificated shares); (ii) delivery of the certificate to the transferee (or written transfer agreement for uncertificated shares); and (iii) registration in the pay defteri. Until the transfer is registered in the pay defteri, the transferee is not recognized as a shareholder against the company — meaning the transferor remains entitled to receive dividends, vote at general assembly, and exercise other shareholder rights even after the underlying share-purchase transaction has closed.
In M&A and financing contexts, pay defteri management is operationally critical: (i) closing-day pay defteri updates recording new investor purchases must occur immediately or shortly after closing to avoid dispute over shareholder status; (ii) secondary-sale tracking requires pay defteri entries documenting each transfer in the chain; (iii) pledge registration for share-secured financing or escrow arrangements; and (iv) capital-increase share allocation recording the new shares issued and to whom. For companies with dematerialized (kayıt) shares held through MKK (Merkezi Kayıt Kuruluşu), the central depository system substitutes for the physical pay defteri but the same conceptual framework applies.
Common pay defteri issues in M&A due diligence include: (i) missing or incomplete entries for historical share transfers (especially in older companies with informal ownership-change practices); (ii) discrepancies between pay defteri and trade-registry capital records; (iii) missing pledge registrations for outstanding share-secured loans; (iv) orphan-share situations where original shareholders cannot be located or their successors are unclear; and (v) improperly-recorded class conversions creating ambiguity about current share-class composition. Vircon Legal advises Turkish A.Ş.s on pay defteri maintenance, historical-error remediation, share-transfer procedure documentation, and the integration of pay defteri practice with broader cap-table management and Carta-style equity-platform deployment.