The Treasury Department announced the Kleptocracy Asset Recovery Rewards Program, where individuals providing information leading to the seizure of assets linked to the Russian government or sanctioned individuals are eligible for payouts of up to $5m:

"The U.S. Department of Justice, the Federal Bureau of Investigation and other U.S. law enforcement agencies seek information leading to the seizure, restraint, forfeiture, or repatriation of assets linked to corruption involving the government of the Russian Federation that are: (1) in an account at a U.S. financial institution, including a U.S. branch of a foreign financial institution; (2) that come within the United States; or (3) that come within the possession or control of any U.S. person. ."

There are a couple of restrictions on it - i.e. if you're a government employee and found the information in the course of your government job, you're not eligible for the reward. There's a fuller list of info here https://home.treasury.gov/about/offices/terrorism-and-financial-intelligence/terrorist-financing-and-financial-crimes/kleptocracy-asset-recovery-rewards-program

and if you have info and still have any questions, they have a phone number and email for the program there too.

VICE have a good article on it - 'The Hunt for Red Yachtober' lol https://www.vice.com/en/article/qjbmeb/us-bounty-russian-oligarch-yachts

The government probably already has most of the publicly available info on these assets, but if there's a few folks out there who might know anything, get that extra money by pointing them in the right direction. Between the payments of $50k and amnesty to defecting Russian soldiers, of $1m to pilots defecting with Russian planes, to people providing info on Russian assets in the U.S., no idea why anyone is still supporting Putin... he offers like $10 to your family if you die. There are better alternatives...