Holding(s) in Company

For filings with the FCA include the annex For filings with issuer exclude the annex TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi 1. Identity of the issuer or the underlying issuerof existing shares to which voting rights are Acacia Mining PLCattached:ii 2 Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights An acquisition or disposal of qualifying financial instruments which may resultin the acquisition of shares already issued to which voting rights are attached An acquisition or disposal of instruments with similar economic effect toqualifying financial instruments An event changing the breakdown of voting rights Other (please specify): 3. Full name of person(s) subject to the BlackRock, Inc.notification obligation:iii 4. Full name of shareholder(s) (if different from 3.):iv 5. Date of the transaction and date onwhich the threshold is crossed or 13th January 2015reached: v 6. Date on which issuer notified: 14th January 2015 7. Threshold(s) that is/are crossed or Holding has gone above 5%reached: vi, vii 8. Notified details: A: Voting rights attached to shares viii, ix Class/type of Situation previous Resulting situation after the triggering transactionshares to the triggering transaction if possible using Number Number Number Number of voting % of voting rightsthe ISIN CODE of of of shares rights x Shares Voting Rights Direct Direct xi Indirect Direct Indirect xii GB00B61D2N63 N/A N/A N/A N/A 19,033,262 N/A 4.64% B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of financial Expiration Exercise/ Number of voting % of votinginstrument Conversion Period xiv rights that may be rights date acquired if the xiii instrument is exercised/ converted. C: Financial Instruments with similar economic effect to Qualifying FinancialInstruments xv, xvi Resulting situation after the triggering transaction Type of financial Exercise Expiration Exercise/ Number of voting rights % of voting rightsinstrument price date Conversion period instrument refers to xix, xx xvii xviii Nominal DeltaCFD 1,730,333 0.42% 0.42% Total (A+B+C) Number of voting rights Percentage of voting rights 20,763,595 5.06% 9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: xxi Proxy Voting: 10. Name of the proxy holder: 11. Number of voting rights proxy holder will ceaseto hold: 12. Date on which proxy holder will cease to holdvoting rights: BlackRock Regulatory Threshold Reporting13. Additional information: Team 14. Contact name: Gareth Slade 15. Contact telephone number: 020 7743 2536