On January 23, 2020, InterXion Holding N.V., a Dutch public limited liability company (naamloze
vennootschap) organized under the Laws of the Netherlands (InterXion), Digital Realty Trust, Inc., a Maryland corporation (DLR), and Digital Intrepid Holding B.V. (formerly known as DN 39J 7A B.V.), a Dutch private
limited liability company (besloten vennootschap met beperkte aansprakelijkheid) organized under the Laws of the Netherlands (Buyer), entered into Amendment No. 1 to Purchase
Agreement (Amendment No. 1), which amends the previously disclosed Purchase Agreement by and among DLR, Buyer and InterXion, dated as of October 29, 2019, to, among other things, provide that if DLR or Buyer reduces the minimum
tender condition of at least 80% of InterXions outstanding ordinary shares to 66 2/3% at the expiration of the tender offer, then the tender offer expiration will be extended for five business days. This extension of the tender offer would
replace a subsequent offering period of three business days following the expiration of the tender offer. If DLR or Buyer does not reduce the minimum tender condition, or if DLR or Buyer reduces the minimum tender condition to 66 2/3% at any time
prior to the expiration of the tender offer, then following the expiration time Buyer shall provide a subsequent offering period of three business days. Amendment No. 1 also provides that if Buyer initiates the compulsory acquisition, then
Buyer will request in the proceedings before the Enterprise Chamber of the Amsterdam Court of Appeals (Ondernemingskamer van het gerechtshof Amsterdam) that the amount in cash to be paid to InterXion shareholders who did not tender their
shares in the tender offer be not less than the value of the offer consideration for shares that were tendered in the tender offer.
The foregoing
description in this Report of Amendment No. 1 is not intended to be a complete description thereof. The description is qualified in its entirety by the full text of the document which is attached as Exhibit 99.1 hereto and incorporated by
reference in this Report.
Additional Information and Where to Find It
This communication is for information purposes only and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a
solicitation of any proxy, vote or approval with respect to the proposed transaction or otherwise, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or
qualification under the securities laws of any such jurisdiction. In connection with the proposed transactions, DLR intends to file a Registration Statement on Form S-4 with the U.S. Securities and Exchange
Commission (the SEC), that will include a proxy statement of DLR, which also constitutes a prospectus of DLR. After the registration statement is declared effective by the SEC, DLR intends to mail a definitive proxy statement/prospectus
to shareholders of DLR and DLR intends to cause its subsidiary to file a Tender Offer Statement on Schedule TO (the Schedule TO) with the SEC and soon thereafter InterXion intends to file a Solicitation/Recommendation Statement on
Schedule 14D-9 (the Schedule 14D-9) with respect to the tender offer. The tender offer for the outstanding common stock of InterXion referred to in this
document has not yet commenced. The solicitation and offer to purchase shares of InterXions common stock will only be made pursuant to the Schedule TO and related offer to purchase. This material is not a substitute for the proxy
statement/prospectus, the Schedule TO, the Schedule 14D-9 or the Registration Statement or for any other document that DLR or InterXion may file with the SEC and send to DLRs or InterXions
shareholders in connection with the proposed transactions.
BEFORE MAKING ANY VOTING OR INVESTMENT DECISION OR DECISION WITH RESPECT TO THE TENDER OFFER,
WE URGE INVESTORS OF DLR AND INTERXION TO READ THE REGISTRATION STATEMENT, PROXY STATEMENT/PROSPECTUS, SCHEDULE TO (INCLUDING AN OFFER TO PURCHASE, RELATED LETTER OF TRANSMITTAL AND OTHER OFFER DOCUMENTS) AND SCHEDULE
14D-9, AS EACH MAY BE AMENDED OR SUPPLEMENTED FROM TIME TO TIME, AND OTHER RELEVANT DOCUMENTS FILED BY DLR AND INTERXION WITH THE SEC CAREFULLY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT
INFORMATION ABOUT DLR, INTERXION AND THE PROPOSED TRANSACTIONS.
Investors will be able to obtain free copies of the Registration Statement, proxy
statement/prospectus, Schedule TO and Schedule 14D-9, as each may be amended from time to time, and other relevant documents filed by DLR and InterXion with the SEC (when they become available) at
http://www.sec.gov, the SECs website, or free of charge from DLRs website (http://www.digitalrealty.com) or by contacting DLRs Investor Relations Department at (415) 848-9311. These documents
are also available free of charge from InterXions website (http://www.interxion.com) or by contacting InterXions Investor Relations Department at (813) 644-9399.