GoPro Inc., which went public in June, filed plans Monday for an offering of $800 million in shares. The company plans to offer $100 million in shares, while current shareholders will sell the remaining $700 million.

A portion of shares will be sold by founder and Chief Executive Nicholas Woodman, whose stake in the company is valued at about $3.4 billion. Woodman had about 44 percent of the voting power through a trust ahead of the secondary offering.

Woodman said in a note to employees that the new capital “will provide
us with additional resources to invest in people, products, potential
acquisitions, and infrastructure to help us achieve our long-term
vision.”

GoPro raised more than $427 million in its IPO. GoPro made its debut on the public market in June, selling shares for
$24 apiece, at the high end of the $21-to-$24 range it had forecast.
Shares have more than tripled from their IPO price, closing at $79.06
Friday, but they have traded somewhat erratically.