Voting Rights and Issued Share Capital

2nd February 2018

Seplat Petroleum Development Company Plc

("Seplat" or the "Company")

Announcement of Voting Rights and Issued Share Capital

The following announcement is being made in accordance with Rule 14 of the Nigerian Stock Exchange Amended Listing Rules and Article 17 - 19 of the UK Market Abuse Regulations 2016.

In exercise of the powers granted to the Board of Directors of the Company, by the Shareholders at the Annual General Meeting held on 30th June 2014 to implement the IPO award and other remuneration of the top Management and Directors as disclosed in the IPO Prospectus, 25,000,000 ordinary shares of Seplat has been allotted to Stanbic IBTC Trustees Limited as Custodian in furtherance of the Company's Long Term Incentive Plan. These shares have also been formally listed on the Nigerian Stock Exchange.

In light of the above, Seplat's share capital now consists of 588,444,561 ordinary shares of ₦0.50k each, all with voting rights.

Therefore, the figure of 588,444,561 may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in Seplat under the NSE Rules and the UK Market Abuse Regulations 2016.

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Notes to editors

Seplat Petroleum Development Company Plc is a leading indigenous Nigerian oil and gas exploration and production company with a strategic focus on Nigeria, listed on the Main Market of the London Stock Exchange ("LSE") (LSE:SEPL) and Nigerian Stock Exchange ("NSE") (NSE:SEPLAT).

Seplat is pursuing a Nigeria focused growth strategy and is well positioned to participate in future divestment programmes by the international oil companies, farm-in opportunities and future licensing rounds. For further information please refer to the company website, http://seplatpetroleum.com.