Updated to 23 October 2025
			(Act No. 10 of 2025 and S.I. No. 506 of 2025)
			
	
		
		
		Contents
		
		
		Commencement
		
            
            
                | Section | 
                Commencement/Effective Date 
                    Where the commencement and effective dates differ, the effective date is shown below. 
                 | 
                Commencement Information | 
            
            
			
			
					| 
						Whole Act | 
					
						1 April 1978 | 
					Companies (Amendment) Act, 1977 (Commencement) Order 1978 (S.I. No. 95 of 1978), art. 2 | 
				
			
		
		
		Amendments and other effects
		
			
				
					| How Affected | 
					Affecting Provision | 
					
			
			
			
					| 
						Repealed with savers and transitional provisions | 
					38/2014, ss. 1(2), (3), 4(1), 5, sch. 2. pt. 1, sch. 6 | 
					
			
					| 
						S. 1 Irish Stock Exchange prescribed  | 
					S.I. No. 310 of 1995, reg. 3(b) | 
					
			
					| 
						S. 1 recognised Stock Exchange prescribed | 
					S.I. No. 337 of 1990, reg. 2(b) | 
					
			
					| 
						  | 
					S.I. No. 122 of 1979, reg. 2 | 
					
			
					| 
						S. 6 rep. | 
					33/1990, ss. 6 (2) (b), 2 | 
					
			
		
		
		SIs made under the Act
		
			| Section | SIs made under the Act | 
			
			
					| 
						S. 1(1) | 
					Companies (Amendment) Act, 1977 (Designation of Stock Exchange Nominee) Regulations 1979 (S.I. No. 122 of 1979) | 
				
			
					| 
						S. 4 | 
					Companies Act 1990 (Uncertificated Securities) (Amendment) Regulations 2005 (S.I. No. 693 of 2005) | 
				
			
					| 
						  | 
					Companies Act, 1990 (Uncertificated Securities) Regulations 1996 (S.I. No. 68 of 1996) |