13D Filing: Mangrove Partners and Atlantic Power Corp (AT)

(b)

1. Sole power to vote or direct vote: 0 2. Shared power to vote or direct vote: 11,324,092 3. Sole power to dispose or direct the disposition: 0 4. Shared power to dispose or direct the disposition: 11,324,092

(c)

Mangrove Fund has not entered into any transactions in the Shares during the past sixty (60) days.

C.

Mangrove Fund Cayman

(a)

As of the close of business on July 21, 2017, Mangrove Fund Cayman, as a significant shareholder of Mangrove Master Fund, may be deemed to beneficially own the 11,324,092 Shares directly owned by Mangrove Master Fund.

Percentage: Approximately 9.8%

(b)

1. Sole power to vote or direct vote: 0 2. Shared power to vote or direct vote: 11,324,092 3. Sole power to dispose or direct the disposition: 0 4. Shared power to dispose or direct the disposition: 11,324,092

(c)

Mangrove Fund Cayman has not entered into any transactions in the Shares during the past sixty (60) days.

D.

Mangrove Partners

(a)

As of the close of business on July 21, 2017, Mangrove Partners, as the investment manager of each of Mangrove Master Fund, Mangrove Fund and Mangrove Fund Cayman, may be deemed to beneficially own the 11,324,092 Shares directly owned by Mangrove Master Fund.

Percentage: Approximately 9.8%

(b)

1. Sole power to vote or direct vote: 0 2. Shared power to vote or direct vote: 11,324,092 3. Sole power to dispose or direct the disposition: 0 4. Shared power to dispose or direct the disposition: 11,324,092

(c)

Mangrove Partners has not entered into any transactions in the Shares during the past sixty (60) days.

E.

Mangrove Capital

(a)

As of the close of business on July 21, 2017, Mangrove Capital, as the general partner of Mangrove Fund, may be deemed to beneficially own the 11,324,092 Shares directly owned by Mangrove Master Fund.

Percentage: Approximately 9.8%