UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No.           )

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☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

KLDISCOVERY INC.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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See the reverse side of this notice to obtain proxy materials and voting instructions. *** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on <mtgdate>. You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. Meeting Information Meeting Type: <mtgtype> For holders as of: <recdate> Date: Time: <mtgtime> Location: 0000465768_1 R1.0.1.18 KLDISCOVERY INC. KLDISCOVERY INC. ATTN: CHRISTOPHER WEILER 8201 GREENSBORO DR., SUITE 300 MCLEAN, VA 22102 Annual Meeting April 28, 2020 June 17, 2020 June 17, 2020 11:00 AM EST Virtual Meeting via live audio webcast - please visit www.virtualshareholdermeeting.com/KLDI2020

Please Choose One of the Following Voting Methods Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. How To Vote g Before You Vote How to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE: How to View Online: Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*: sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line. g g 0000465768_2 R1.0.1.18 1. Annual Report 2. Notice & Proxy Statement Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before June 03, 2020 to facilitate timely delivery.

Voting items 0000465768_3 R1.0.1.18 The Board of Directors recommends you vote FOR the following: 1. A proposal to elect 3 Class A directors to serve until the 2023 Annual Meeting of Stockholders and until their respective successors have been duly elected and qualified. Nominees 01) Kevin Griffin 02) Richard J. Williams 03) Lawrence Prior III 2 A proposal to ratify the appointment of Ernst & Young LLP as the independent registered public accounting firm of KLDiscovery Inc. for the fiscal year ending December 31, 2020. NOTE: If any other matters properly come before the 2020 Annual Meeting of Stockholders or any adjournments or postponements thereof, the persons named as proxies will vote upon those matters according to their judgment. The Board of Directors of KLDiscovery Inc. is not aware of any other business to be presented to a vote of the stockholders at the 2020 Annual Meeting of Stockholders.

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