San Francisco-based Slack Technologies Inc. filed for its initial public offering Friday, joining a a parade of tech companies going public—and keeping California deal in 2019.

Rather than going through a traditional public offering, Slack plans on going public through a direct listing on the New York Stock Exchange under the symbol SK.

Goodwin Procter is legal adviser for for Slack on the IPO, while the financial advisers and other associate advisers are represented by Latham & Watkins, according to Slack's S-1 filed with the U.S. Securities and Exchange Commission. According to the filing, Slack is working with Allen & Co. LLC, Goldman Sachs Group Inc. and Morgan Stanley on the share sale.

Leading on Slack's listing is Goodwin capital markets practice co-chair Richard Kline, who joined the firm in 2011 from Wilson Sonsini Goodrich & Rosati.

Kline has been lead legal adviser for other technology companies and their underwriters in several recent high-profile public offerings, including JPMorgan in Lyft's $2.6 billion IPO last month and The Goldman Sachs Group and Morgan Stanley in Snap Inc.'s $3.4 billion IPO in 2017.

David Van Horne, a technology partner and business law department leader for Goodwin's San Francisco office, who joined the firm in 2013 from Gunderson Dettmer Stough Villeneuve Franklin & Hachigian, is also working with Kline on the listing, along with associate Sarah Axtell.

Slack recorded $400 million in revenue and $139 million in losses in the year ending Jan. 31, its filing showed. The workplace messaging company was valued at $7.1 billion in its latest round of funding back in August.

In its listing, Slack will offer a dual-class stock structure where Class A common stock will have one vote per share when sold, while Class B will have 10 votes per share.

As of January, the San Francisco-based tech company had more than 10 million active daily users worldwide with 88,000 paid customers, up nearly 50 percent from the year prior, according to the filing.