Form 8.3 - DANA PETROLEUM PLC

FORM 8.3 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: 12 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 1,036,966 1.12% 189,770 0.21% controlled: (2) Derivatives (other than options): 182,620 0.20% 86,156 0.09% (3) Options and agreements to purchase/sell: 0 0 0 0 TOTAL: 1,219,586 1.32% 275,926 0.30% 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 68 14.1605 GBP ORD Purchase 83 14.2318 GBP ORD Purchase 100 14.1909 GBP ORD Purchase 125 14.1428 GBP ORD Purchase 145 14.1935 GBP ORD Purchase 159 14.2467 GBP ORD Purchase 166 14.2400 GBP ORD Purchase 300 14.2509 GBP ORD Purchase 318 14.2500 GBP ORD Purchase 374 14.1550 GBP ORD Purchase 490 14.1950 GBP ORD Purchase 541 14.1700 GBP ORD Purchase 600 14.2550 GBP ORD Purchase 731 14.1167 GBP ORD Purchase 1,462 14.1400 GBP ORD Purchase 1,688 14.2100 GBP ORD Purchase 3,047 14.2371 GBP ORD Purchase 8,705 14.2118 GBP ORD Purchase 14,921 14.2296 GBP ORD Sale 62 14.1564 GBP ORD Sale 166 14.2400 GBP ORD Sale 374 14.1550 GBP ORD Sale 490 14.1950 GBP ORD Sale 600 14.2550 GBP ORD Sale 711 14.1800 GBP ORD Sale 841 14.2500 GBP ORD Sale 1,462 14.1400 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 Short 68 14.1605 GBP ORD CFD Short 3,047 14.2370 GBP ORD CFD Short 14,921 14.2296 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: 13 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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