Lock-in of pre-issue capital restricts transfers after IPO, with tailored exceptions for employee schemes and investment funds. The regulation mandates that all pre-issue capital held by non-promoters be locked for the prescribed period post-allotment, subject to exceptions for employee share scheme allotments and employee stock option trusts which are governed by the issuer's share based benefits lock-in regime. Venture capital, specified alternative investment funds and foreign venture capital investor holdings must themselves be locked for the prescribed period from purchase, with holding periods of converted convertible securities and bonus-related shares aggregated to determine compliance. If a lock-in cannot be created, depositories shall mark such securities as non-transferable on issuer instruction for the lock-in duration.