[ad_1] Birkenstock has filed for an preliminary public providing, in one other signal of the attract US fairness markets maintain for European corporations searching for a valuation uplift. The German footwear maker, whose iconic sandals are worn by hippies and preppies alike, will proceed to be managed by personal fairness agency L Catterton, in response to a submitting on Tuesday. The corporate will disclose the proposed phrases of the share sale in a later submitting with the US Securities and Alternate Fee. The IPO may worth Birkenstock at greater than $8 billion, Bloomberg Information reported beforehand. Goldman Sachs Group Inc., JPMorgan Chase & Co.…