Cops busted three stick-up artists who they say preyed on Manhattan and Bronx businesses for months, sources said Saturday.

Armon Grim, Dante Martinez, and Allen Brown’s alleged spree netted upwards of $3,000 over nine robberies, mostly targeting chain pharmacies, sources said.

In addition to CVS, Duane Reade, and Walgreens stores ranging from Little Italy to Harlem, the crew also hit a Dunkin’ Donuts in The Bronx, cop sources said.

Sources said the trio, arrested Friday, claimed to be armed during each of the hold-ups, but no injuries were reported.

The suspects’ arraignments were pending as of Saturday afternoon.