Moen noted Sessions' action doesn't change federal law, which includes a congressional provision barring authorities from spending federal money to prosecute medical marijuana operations that abide by state laws.
He conceded that the action would have a "near-term chilling effect" on the industry's lobbying effort to compel banks and insurance companies to accept its business. Banks and insurance companies refuse to do business with cannabis companies because marijuana is illegal under federal law and most financial institutions are federally insured, forcing marijuana businesses to operate in cash.
Most of Seattle-based Privateer's $150 million in investments are in companies based outside the United States, and Moen conceded that Sessions' action Thursday would keep it that way for the short term because of regulatory uncertainty in the United States. Online news and marijuana information site Leafly is the firm's biggest U.S. investment.
In San Francisco, a city long known for embracing weed, sales of recreational marijuana were set to begin Saturday as planned, although it was unclear how many would be able to sell to everyone. City officials said seven businesses received the required local permits, but state records indicated not all had the necessary California permits. Many of the city's existing 47 medical marijuana dispensaries were expected to apply.
In Colorado, CEO Andy Williams said the announcement that he's open to prosecution could turn years of work and millions of dollars of investment in his store Medicine Man Denver into a criminal enterprise. He said Sessions' action goes against the will of Colorado voters, who legalized marijuana in 2014.
"Any action by the attorney general goes against the public sentiment," he said. "I don't think it's a smart move. Of course, we haven't seen what it is yet, so we'll wait and see."
The share price of Medicine Man dropped nearly 40 percent Thursday, from $3.18 to $2.11. The stock closed up Friday at $2.28 a share.
Don Morse, director of the Oregon Cannabis Business Council, said he expects "business as usual" in Oregon's marijuana industry despite Sessions' policy.
The U.S. Attorney for Oregon, Billy J. Williams, indicated he would maintain the same level of enforcement with state and local authorities by focusing on unlicensed production of marijuana and smuggling to other states.
"Legal marijuana has become so entrenched in the U.S. — it's a multibillion-dollar industry — and I don't see the people who are behind this, people like myself, rolling over for the Justice Department, which means Congress will have to act," Morse said. He said Congress should declassify marijuana as a Schedule 1 dangerous drug.
Morse said he believes the same federal provision that bars prosecution of medicinal marijuana operators also protects the recreational side to some extent, because "it is difficult to distinguish one from the other."
Cannabinniers, a San Diego maker of marijuana-infused food and drink also expects slower investor interest in the short term.