Kessler topaz meltzer & check, llp - important deadline reminder for fibrogen, inc. investors - expanded class period

Radnor, pa., may 10, 2021 /prnewswire/ -- the law firm of kessler topaz meltzer & check, llp reminds investors that a securities fraud class action lawsuit has been filed against fibrogen, inc. (nasdaq: fgen) ("fibrogen") on behalf of those who purchased or acquired fibrogen securities and/or sold put options from december 20, 2018 through april 6, 2021 , inclusive (the "class period").
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