X0306 4 2018-03-23 0 0000895728 ENBRIDGE INC ENB 0001437823 England James Herbert C/O ENBRIDGE INC. 200, 425 1ST STREET SW CALGARY A0 T2P 3L8 ALBERTA, CANADA 1 0 0 0 Common Shares 2018-03-23 4 A 0 1553 A 16926 D Deferred Stock Units 2018-03-23 4 A 0 617 0 A Common Shares 617 64250 D All non-employee directors may elect to receive a portion of their compensation in the form of Enbridge Common Shares. The Enbridge Common Shares granted as a component of director compensation are not subject to any vesting conditions or other restrictions on transfer. Includes 214 Enbridge Common Shares acquired by the Reporting Person between January 2, 2018 and March 23, 2018 under the Enbridge Dividend Reinvestment and Share Purchase Plan in transactions that were exempt under Rule 16a-11. All non-employee directors receive a portion of their compensation in the form of Deferred Stock Units ("DSUs"), which represent notional shares with the same value as Enbridge Common Shares. Such DSUs are fully vested at grant and are settled in cash upon retirement of the director based on the price of Enbridge Common Shares. The DSUs have no expiration date. Includes 1,014 DSUs acquired by the Reporting Person between January 2, 2018 and March 23, 2018 under the Enbridge Dividend Reinvestment and Share Purchase Plan in transactions that were exempt under Rule 16a-11. /s/ Michelle Lowther, attorney-in-fact 2018-03-27