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: 5 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 966,085 1.04% 288,275 0.31% controlled: (2) Derivatives (other than options): 251,633 0.27% 0 0.00% (3) Options and agreements to purchase/sell: TOTAL: 1,217,718 1.32% 288,275 0.31% Class of relevant security: Convertible Bond GBP Interests Short positions Number % Number % (1) Relevant securities owned and/or 300,000 0.21 controlled: (2) Derivatives (other than options): (3) Options and agreements to purchase/sell: TOTAL: 300,000 0.21 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 1 14.4300 GBP ORD Purchase 71 14.3023 GBP ORD Purchase 100 14.4106 GBP ORD Purchase 140 13.9850 GBP ORD Purchase 142 14.3912 GBP ORD Purchase 160 14.3850 GBP ORD Purchase 200 14.4150 GBP ORD Purchase 216 14.3135 GBP ORD Purchase 260 14.3400 GBP ORD Purchase 262 14.3731 GBP ORD Purchase 284 14.4000 GBP ORD Purchase 328 14.4030 GBP ORD Purchase 328 14.4918 GBP ORD Purchase 344 14.3500 GBP ORD Purchase 344 14.3819 GBP ORD Purchase 346 14.3612 GBP ORD Purchase 350 14.0112 GBP ORD Purchase 400 14.0700 GBP ORD Purchase 571 14.3406 GBP ORD Purchase 574 14.3150 GBP ORD Purchase 656 14.4350 GBP ORD Purchase 656 14.5000 GBP ORD Purchase 688 14.4800 GBP ORD Purchase 692 14.3700 GBP ORD Purchase 700 14.0200 GBP ORD Purchase 727 13.9812 GBP ORD Purchase 909 14.2767 GBP ORD Purchase 1,000 14.4985 GBP ORD Purchase 1,080 14.3729 GBP ORD Purchase 1,114 14.3962 GBP ORD Purchase 1,142 14.3450 GBP ORD Purchase 1,450 14.4250 GBP ORD Purchase 1,590 13.9900 GBP ORD Purchase 2,342 14.3900 GBP ORD Purchase 2,388 14.4050 GBP ORD Purchase 2,546 14.4850 GBP ORD Purchase 3,990 14.3950 GBP ORD Purchase 4,043 14.1395 GBP ORD Purchase 5,373 14.2278 GBP ORD Purchase 5,722 14.1205 GBP ORD Purchase 6,842 14.0187 GBP ORD Purchase 13,106 14.2014 GBP ORD Sale 2 14.0600 GBP ORD Sale 49 13.9600 GBP ORD Sale 68 13.9913 GBP ORD Sale 70 13.9863 GBP ORD Sale 107 14.5200 GBP ORD Sale 130 14.3414 GBP ORD Sale 140 13.9850 GBP ORD Sale 160 14.3850 GBP ORD Sale 171 14.3969 GBP ORD Sale 172 14.3514 GBP ORD Sale 200 14.0714 GBP ORD Sale 200 14.4150 GBP ORD Sale 260 14.3400 GBP ORD Sale 273 14.4814 GBP ORD Sale 284 14.4000 GBP ORD Sale 344 14.3500 GBP ORD Sale 344 14.4980 GBP ORD Sale 400 14.0700 GBP ORD Sale 491 13.9800 GBP ORD Sale 574 14.3150 GBP ORD Sale 656 14.4350 GBP ORD Sale 656 14.5000 GBP ORD Sale 688 14.4800 GBP ORD Sale 692 14.3700 GBP ORD Sale 700 14.0200 GBP ORD Sale 725 14.4768 GBP ORD Sale 737 14.1394 GBP ORD Sale 917 14.4282 GBP ORD Sale 1,142 14.3450 GBP ORD Sale 1,389 14.3893 GBP ORD Sale 1,450 14.4250 GBP ORD Sale 1,590 13.9900 GBP ORD Sale 2,228 14.3962 GBP ORD Sale 2,342 14.3900 GBP ORD Sale 2,546 14.4850 GBP ORD Sale 2,955 14.4275 GBP ORD Sale 3,382 14.2070 GBP ORD Sale 3,990 14.3950 GBP ORD Sale 5,485 14.4445 GBP ORD Sale 14,500 14.1033 GBP ORD Sale 22,031 14.1978 GBP ORD Sale 23,000 14.3055 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 737 14.1394 GBP ORD CFD Long 917 14.4282 GBP ORD CFD Long 3,382 14.2070 GBP ORD CFD Long 5,485 14.4445 GBP ORD CFD Short 2,388 14.4050 GBP ORD CFD Short 4,043 14.1395 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)
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