neuroone medical technologies shares plunged after the maker of neurological medical devices priced a followon offering significantly below its monday closing market value neuroone priced an offering of 525 million shares at 1 apiece in a deal expected to close july 27 shares closed monday at 159 the underwriter has a 30day option to buy an additional 787500 shares the eden prairie minn company expects to raise 525 million from the offering which it intends to use to fund the commercial launch of a surgical device with partner zimmer biomet to support a food and drug administration approval application for a second device to fund research on a third drugdelivery device and for general corporate purposes