What is a dual-class share structure?
Dual-class share structure is a corporate governance configuration where the company issues two (or more) classes of common stock with different voting rights. Typically Class A shares (1 vote each, sold to public) and Class B shares (10+ votes each, held by founders/insiders) maintain founder control while accessing public capital markets. Dual-class structures are common in technology IPOs since 2004 (Google’s IPO popularized the structure), though governance debate continues.
Dual-class evolution
Three distinct eras. (1) Traditional era (pre-2000) — dual-class structures existed but limited mostly to media companies (NYT, WaPo) where editorial independence justified founder control. (2) Tech adoption era (2004-2017) — Google’s IPO popularized dual-class for tech; Meta, LinkedIn, Snap followed. (3) Sunset era (2017-present) — increasing pressure for time-limited or event-based termination of supervoting rights.
Index inclusion controversies
Major index providers responded to dual-class growth. (1) S&P Dow Jones (2017) — banned dual-class companies from new S&P 500 inclusion (existing companies grandfathered). (2) FTSE Russell (2017) — limited dual-class inclusion in major indices unless minimum public voting threshold met. (3) MSCI (2018-2020) — initially considered exclusion, ultimately maintained dual-class inclusion with disclosure requirements. The index decisions affect institutional capital flow to dual-class companies.
Stock exchange responses
Different exchanges have different dual-class rules. (1) NYSE and Nasdaq — allow dual-class IPOs with disclosure. (2) London Stock Exchange — historically restricted, reformed 2021 to allow dual-class. (3) Hong Kong Stock Exchange — initially restricted, reformed 2018 to allow weighted voting rights structures. (4) Singapore — allows dual-class. Global exchange competition for tech IPOs drove regulatory liberalization.
Governance protections
Standard dual-class IPOs include investor protections. (1) Independent directors — majority independent board even with founder control. (2) Audit committee independence — independent directors only. (3) Sunset provisions — time-based or ownership-based termination of supervoting. (4) Restrictions on Class B transfer — converts to Class A on transfer to non-founders. (5) Disclosure requirements — public disclosure of voting power concentration and related transactions.
Investor advocacy positions
Two competing institutional positions. (1) Council of Institutional Investors (CII) — argues against permanent dual-class as anti-democratic and anti-accountability. Supports sunset provisions and ownership-based termination. (2> Some institutional investors — accept dual-class as necessary for innovation-economy companies, particularly with adequate governance protections. The tension affects ongoing exchange and index policy.
Türkiye context
For Türk-incorporated companies, TTK structure permits limited “imtiyazlı pay” categories with specific privileged rights but generally requires equal voting per share. Türk SPK-regulated companies seeking IPO must address dual-class structure compatibility with Borsa Istanbul listing requirements. Türk founders pursuing global IPOs (US, UK, HK) often re-incorporate to enable dual-class structures, requiring sophisticated cross-border tax and corporate planning.
Related: Supervoting Shares, Board of Directors, Imtiyazlı Paylar.