Form 8.3 - DANA PETROLEUM PLC - AMENDMENT

FORM 8.3 AMENDMENT PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE Rule 8.3 of the Takeover Code (the "Code") 1. KEY INFORMATION (a) Identity of the person whose positions/dealings are being disclosed: BARCLAYS PLC (b) Owner or controller of interests and short positions disclosed, if different from 1(a): The naming of nominee or vehicle companies is insufficient (c) Name of offeror/offeree in relation to whose relevant securities this form relates: DANA PETROLEUM PLC Use a separate form for each offeror/offeree (d) If an exempt fund manager connected with an offeror/offeree, state this and specify identity of offeror/offeree: (e) Date position held/dealing undertaken: 8 July 2010 (f) Has the discloser previously disclosed, or are they today disclosing, NO under the Code in respect of any other party to this offer? 2. POSITIONS OF THE PERSON MAKING THE DISCLOSURE (a) Interests and short positions in the relevant securities of the offeror or offeree to which the disclosure relates following the dealing (if any) Class of relevant security: Ordinary Interests Short positions Number % Number % (1) Relevant securities owned and/or 1,033,056 1.12 217,319 0.24 controlled: (2) Derivatives (other than options): 197,926 0.21 31,820 0.03 (3) Options and agreements to purchase/sell: TOTAL: 1,230,982 1.33 249,139 0.27 Class of relevant security: Convertible Bond GBP Interests Short positions Number % Number % (1) Relevant securities owned and/or 700,000 0.49 controlled: (2) Derivatives (other than options): (3) Options and agreements to purchase/sell: TOTAL: 700,000 0.49 All interests and all short positions should be disclosed. Details of any open derivative or option positions, or agreements to purchase or sell relevant securities, should be given on a Supplemental Form 8 (Open Positions). (b) Rights to subscribe for new securities (including directors' and other executive options) Class of relevant security in relation to which subscription right exists: Details, including nature of the rights concerned and relevant percentages: If there are positions or rights to subscribe to disclose in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 2(a) or (b) (as appropriate) for each additional class of relevant security. 3. DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE (a) Purchases and sales Class of relevant Purchase/sale Number of securities Price per unit security ORD Purchase 215 14.0585 GBP ORD Purchase 250 14.1526 GBP ORD Purchase 350 14.2009 GBP ORD Purchase 430 14.0600 GBP ORD Purchase 500 14.0809 GBP ORD Purchase 500 14.1550 GBP ORD Purchase 700 14.2035 GBP ORD Purchase 980 14.2100 GBP ORD Purchase 986 14.0750 GBP ORD Purchase 1,000 14.1235 GBP ORD Purchase 1,098 14.0830 GBP ORD Purchase 1,854 14.2050 GBP ORD Purchase 2,000 14.1250 GBP ORD Purchase 2,261 14.1295 GBP ORD Purchase 2,852 14.1328 GBP ORD Purchase 12,117 14.1725 GBP ORD Purchase 27,471 14.1430 GBP ORD Purchase 43,550 14.0900 GBP ORD Purchase 200,000 14.1100 GBP ORD Purchase 272,100 14.1034 GBP ORD Sale 140 14.2114 GBP ORD Sale 227 14.2064 GBP ORD Sale 367 14.0777 GBP ORD Sale 430 14.0600 GBP ORD Sale 493 14.0784 GBP ORD Sale 500 14.1550 GBP ORD Sale 980 14.2100 GBP ORD Sale 986 14.0750 GBP ORD Sale 1,000 14.0900 GBP ORD Sale 1,854 14.2050 GBP ORD Sale 2,000 14.1250 GBP ORD Sale 2,205 14.0629 GBP ORD Sale 3,147 14.1320 GBP ORD Sale 3,287 14.0882 GBP ORD Sale 3,541 14.0739 GBP ORD Sale 4,440 14.0872 GBP ORD Sale 5,082 14.0856 GBP ORD Sale 6,835 14.1672 GBP ORD Sale 9,993 14.0932 GBP ORD Sale 15,184 14.1019 GBP ORD Sale 61,914 14.0866 GBP ORD Sale 169,741 14.1009 GBP ORD Sale 200,000 14.1100 GBP Convertible Bond Sale 1,000,000 116.3750 GBP (b) Derivatives transactions (other than options) Class of Product Nature of Number of relevant description dealing e.g. reference Price per security e.g. CFD opening/closing securities unit a long/short position, increasing/reducing a long/short position ORD CFD Long 367 14.0777 GBP ORD CFD Long 3,287 14.0882 GBP ORD CFD Short 2,261 14.1295 GBP ORD CFD Short 27,471 14.1430 GBP (c) Options transactions in respect of existing securities (i) Writing, selling, purchasing or varying Class of Product Writing, Number of Exercise Type Expiry date Option money relevant description purchasing, securities to price per e.g. paid/ security e.g. call selling, varying which option unit American, received per option etc. relates European unit etc. (ii) Exercising Class of relevant security Product description Number of securities Exercise price per unit e.g. call option (d) Other dealings (including subscribing for new securities) Class of relevant Nature of dealing Details Price per unit (if security e.g. subscription, conversion applicable) The currency of all prices and other monetary amounts should be stated. Where there have been dealings in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 3(a), (b), (c) or (d) (as appropriate) for each additional class of relevant security dealt in. 4. OTHER INFORMATION (a) Indemnity and other dealing arrangements Details of any indemnity or option arrangement, or any agreement or understanding, formal or informal, relating to relevant securities which may be an inducement to deal or refrain from dealing entered into by the person making the disclosure and any party to the offer or any person acting in concert with a party to the offer: If there are no such agreements, arrangements or understandings, state "none" (b) Agreements, arrangements or understandings relating to options or derivatives Details of any agreement, arrangement or understanding, formal or informal, between the person making the disclosure and any other person relating to: (i)the voting rights of any relevant securities under any option; or (ii)the voting rights or future acquisition or disposal of any relevant securities to which any derivative is referenced: If there are no such agreements, arrangements or understandings, state "none" (c) Attachments Is a Supplemental Form 8 (Open Positions) attached? NO Date of disclosure: 9 July 2010 Contact name: Geoff Smith Telephone number: 020 7116 2913 Public disclosures under Rule 8 of the Code must be made to a Regulatory Information Service and must also be emailed to the Takeover Panel at monitoring@disclosure.org.uk

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Barclays (BARC)
UK 100

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