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LONDON--(BUSINESS WIRE)-- 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 Barclays PLC. RWS HOLDINGS PLC 30 September 2020 YES: SDL PLC 2. POSITIONS OF THE PERSON MAKING THE DISCLOSURE 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. (a) Interests and short positions in the relevant securities of the offeror or offeree to which the disclosure relates following the dealing (if any) Interests Short Positions Number (%) Number (%) (1) 513,993 0.19% 523,620 0.19% (2) 385,422 0.14% 147,121 0.05% (3) 0 0.00% 0 0.00% 899,415 0.33% 670,741 0.24% All interests and all short positions should be disclosed. Details of any open stock-settled derivative positions (including traded options), 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 employee options) Class of relevant security in relation to which subscription right exists: Details, including nature of the rights concerned and relevant percentages: 3. DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE 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. The currency of all prices and other monetary amounts should be stated. (a) Purchases and sales Purchase/sale Number of Price per unit securities Purchase 26 5.6300 GBP Purchase 143 5.6212 GBP Purchase 146 5.6305 GBP Purchase 565 5.6390 GBP Purchase 835 5.6344 GBP Purchase 1,366 5.6105 GBP Purchase 2,180 5.6497 GBP Purchase 2,390 5.6501 GBP Purchase 3,119 5.6500 GBP Purchase 3,439 5.6288 GBP Purchase 5,598 5.6326 GBP Purchase 9,226 5.6477 GBP Sale 1,399 5.6278 GBP Sale 2,151 5.6400 GBP Sale 9,572 5.6500 GBP Sale 28,964 5.6472 GBP (b) Cash-settled derivative transactions Product Nature of dealing Number of Price per description reference unit securities SWAP Long 365 5.6500 GBP CFD Long 2,333 5.6496 GBP SWAP Long 3,078 5.6566 GBP SWAP Long 6,919 5.6484 GBP CFD Long 8,834 5.6357 GBP CFD Long 8,834 5.6495 GBP SWAP Short 21 5.6182 GBP SWAP Short 22 5.6239 GBP SWAP Short 34 5.6176 GBP SWAP Short 66 5.6231 GBP SWAP Short 86 5.6500 GBP SWAP Short 146 5.6305 GBP SWAP Short 210 5.6284 GBP SWAP Short 415 5.6323 GBP SWAP Short 466 5.6332 GBP CFD Short 593 5.6500 GBP SWAP Short 749 5.6327 GBP SWAP Short 1,292 5.6283 GBP SWAP Short 1,366 5.6105 GBP SWAP Short 1,807 5.6321 GBP SWAP Short 1,937 5.6291 GBP SWAP Short 2,390 5.6501 GBP CFD Short 2,800 5.6489 GBP SWAP Short 2,910 5.6329 GBP (c) Stock-settled derivative transactions (including options) (i) Writing, selling, purchasing or varying Class of relevant security Product description e.g. call option Writing, purchasing, selling, varying etc. Number of securities to which option relates Exercise price per unit Type e.g. American, European etc. Expiry date Option money paid/ received per unit (ii) Exercise Class of relevant security Product description e.g. call option Exercising/ exercised against Number of securities Exercise price per unit (d) Other dealings (including subscribing for new securities) Class of relevant security Nature of dealing e.g. subscription, conversion Details Price per unit (if applicable) 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: Irrevocable commitments and letters of intent should not be included. If there are no such agreements, arrangements or understandings, state none 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 None (c) Attachments 1 Oct 2020 Large Holdings Regulatory Operations 020 3134 7213 Public disclosures under Rule 8 of the Code must be made to a Regulatory Information Service. The Panels Market Surveillance Unit is available for consultation in relation to the Codes disclosure requirements on +44 (0)20 7638 0129. *If the discloser is a natural person, a telephone number does not need to be included, provided contact information has been provided to the Panels Market Surveillance Unit. The Code can be viewed on the Panels website at www.thetakeoverpanel.org.uk.

Answer: Form 8.3 - RWS Holdings Plc