Just when Hain Celestial thought it could relax with its signature chamomile tea, an activist investor emerged.

Only one week after filing financial statements for the first time in a year, activist investor Engaged Capital on Thursday came knocking at the organic food company’s door, threatening a near-overhaul of Hain Celestial’s board and pushing for a sale.

Newport Beach, Calif.-based Engaged Capital announced a 9.9 percent stake in Hain, which owns Celestial Seasonings, Blue Print Organic and Alba Botanica.

Last week Hain named a new chief financial officer and filed a year’s backlog of financial statements, narrowly making a Nasdaq deadline to avoid delisting.

Hain said last August that it was reviewing how it recorded the timing of its revenues. It said last week that “no material changes” were needed for previously filed financials.

In a regulatory filing, Engaged Capital said it has already spoken with the company and has submitted seven candidates for election to the board at the company’s next annual meeting.

The hedge fund also wants the company to consider selling itself.

Hain could sell within the mid-$40s to mid-$70s range, sources said.

Shares of Hain Celestial, which closed Thursday up 22 cents, at $35.76, popped as much as 8 percent in after-hours trades.

Reps from Hain did not respond to requests for comment.