Cuomo Holds $3 Million of Undisclosed Options in Nuclear Startup

Former New York Governor Andrew Cuomo has $3 million in options to a shoestring nuclear startup that he failed to disclose to an ethics board as he mounts a comeback bid to be the mayor of New York City.

The options are with Nano Nuclear Energy Inc., which aspires to build portable nuclear reactors that could be deployed to data centers and disaster zones, according to securities filings. The company’s founder Jiang “Jay” Yu met Cuomo at a networking function last year.

Within weeks of their meeting, according to federal filings and an interview with Yu, the two men ...