Interlink Electronics Inc — Additional Proxy Materials (DEFA14A)

www.investorvote.com/LINK Step 1: Go to www.investorvote.com/LINK. Step 2: Click on the icon on the right to view meeting materials. Step 3: Return to the investorvote.com window and follow the instructions on the screen to log in. Online Go to www.investorvote.com/LINK or scan the QR code — login details are located in the shaded bar below. Shareholder Meeting Notice 048VTD Important Notice Regarding the Availability of Proxy Materials for the Interlink Electronics, Inc. Shareholder Meeting to be Held on May 19, 2026 Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual shareholders’ meeting are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important! This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The 2025 Annual Report on Form 10-K and the 2026 Proxy Statement are available at: Obtaining a Copy of the Proxy Materials – If you want to receive a copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before May 4, 2026 to facilitate timely delivery. 2NOT Easy Online Access — View your proxy materials and vote. When you go online, you can also help the environment by consenting to receive electronic delivery of future materials. Step 4: Make your selections as instructed on each screen for your delivery preferences. Step 5: Vote your shares.

Here’s how to order a copy of the proxy materials and select delivery preferences: Current and future delivery requests can be submitted using the options below. If you request an email copy, you will receive an email with a link to the current meeting materials. PLEASE NOTE: You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials. — Internet – Go to www.investorvote.com/LINK. — Phone – Call us free of charge at 1-866-641-4276. — Email – Send an email to investorvote@computershare.com with “Proxy Materials Interlink Electronics, Inc.” in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials. To facilitate timely delivery, requests for a paper copy of proxy materials must be received by May 4, 2026. Interlink Electronics, Inc.’s Annual Meeting of Shareholders will be held on May 19, 2026 at Interlink Electronics, Inc., 48389 Fremont Boulevard, Suite 110, Fremont, CA 94538, at 10:00 A.M., Pacific Time. Proposals to be voted on at the meeting are listed below along with the Board of Directors’ recommendations. The Board of Directors recommends a vote FOR each Proposal: 1. To elect four directors to serve until the 2027 annual meeting of shareholders or until their successors are duly elected and qualified. 2. Advisory vote on executive compensation. 3. Ratification of the appointment of LMHS, P.C. as our independent registered public accounting firm for the fiscal year ending December 31, 2026. 4. Approval of the Interlink Electronics, Inc. 2026 Omnibus Incentive Plan PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card. If you wish to attend and vote at the meeting, please bring this notice with you. Shareholder Meeting Notice