Nothing in our feed on $ULBI is younger than May. The last item is a first-quarter report: sales of $47.4 million, down 6.5%, with production lost to a power outage in Newark. A battery maker. Tonight the stock is up 145.13% after the close, and that May report explains none of it.
What the move does describe is the float. Ten million shares, a $108 million company before today. Supply that thin doesn't need a reason to reprice; it needs a few buyers who didn't check for one. Compare #INTA, down 16.30% this evening on an 8-K with Item 2.02 attached. That gap at least has a document. This one has a date stamp from spring.
Cross-stock history for opening gap-ups of 30% or more in floats under 20 million shares: 2,902 prior sessions, 70% of them closed below their own open, median open-to-close -10.77%. A description of mornings that already happened, same session only, and silent on what Ultralife prints before tomorrow's bell.
The price moved. On the record, nothing was said.