At this price, the owner of the workplace instant messaging app is valued at around $16 billion (£12.6 billion).
Slack, which will list its shares directly on the NYSE on Thursday, is the second high profile technology company after Spotify Technology SA to shun a traditional listing.
The reference price is not an offering price, the NYSE notice https://www.nyse.com/trader-update/history#110000137618 said. The opening public price will be determined by buy and sell orders collected by the NYSE from broker-dealers.
Slack's direct listing could further pave the way for companies looking to go public without the help of Wall Street underwriters who charge millions of dollars in fees.
The company offers an internet-based platform that allows teams and businesses to communicate with each other and directly competes with Microsoft Corp's Teams.
San Francisco-based Slack, whose customers include Electronic Arts Inc, Nordstrom Inc and Ford Motor Co, has around 600,000 organizations using its service, and 95,000 paid customers.
(Reporting by Ankit Ajmera in Bengaluru; Editing by Arun Koyyur)