Rearrange data from 6 columns to 1 column

Newbie here. I mean to say, how do I add 617 columns with 3 rows of data (name, address, and phone numbers) from columns B, C, D . . . WR (617 columns) to the end of column A (resulting in one column with 1852 rows (3x617)?

Simplified Example:

Current

Company A	Company B	Company C
101 Oak St	102 Oak St	103 Oak St
555-5555	666-6666	777-7777

Needed

Company A

101 Oak St

555-5555

Company B

102 Oak St

666-6666

Company C

103 Oak St

777-7777

Thanks.

If you want a cell gap between company entries like shown in your example, you could try this in A4 and copied downward:

=IF(MOD(ROW(),4)=0,"",OFFSET($B$1,MOD(ROW(),4)-1,FLOOR(ROW()/4,1)-1))