U.S. District Court Judge Robert Kugler had given them a Jan. 26 deadline to file any post-verdict motions.
Defendant Serdar Tatar had already asked Kugler to overturn his verdict or schedule a new trial. A lawyer for defendant Eljvir Duka filed on Friday to join Tatar's motion.
Defendant Shain Duka's lawyer filed a similar motion on Monday.
A telephone message left for Michael Huff, a lawyer for defendant Dritan Duka, was not returned Monday.
A secretary for attorney Rocco C. Cipparone Jr., who represents defendant Mohamad Shnewer, said Cipparone was planning to file the necessary papers by today's deadline, but declined to explain what he would be filing.
As of 6 p.m. Monday, the documents were not posted on a court Web site.
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