Protolabs Sets Conference Call to Discuss First Quarter 2018 Financial Results

Protolabs (NYSE: PRLB) announced today that it will issue its financial results for the first quarter 2018 before the opening of the market on Apr. 26, 2018. Protolabs will host a call to discuss the results at 8:30 a.m. Eastern time on the same day. A simultaneous webcast of the call will be available via the investor relations section of the Protolabs website and the following link: https://edge.media-server.com/m6/p/obx9hij8

To access the live call, please dial 877-709-8150 or outside the U.S. dial 201-689-8354 at least five minutes prior to the 8:30 a.m. start time. An audio replay will be available at the investor relations section of the Protolabs website beginning approximately two hours following the end of the conference call.

About ProtolabsProtolabs is the world’s fastest digital manufacturing source for rapid prototyping and on-demand production. The technology-enabled company produces custom parts and assemblies in as fast as 1 day with automated 3D printing, CNC machining, sheet metal fabrication, and injection molding processes. Its digital approach to manufacturing enables accelerated time to market, reduces development and production costs, and minimizes risk throughout the product life cycle. Visit protolabs.com for more information.

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Investor Relations Contact:ProtolabsDan Schumacher, 763-479-7240Director of Investor [e-mail] Contact:Padilla for ProtolabsTim Nelson, [e-mail]