India, Sept. 11 -- Gossamer Bio, Inc. (GOSS) is down 6.14 percent, losing $0.70 to $10.69 on Friday. The move comes after the clinical-stage biopharmaceutical company completed its previously announced 1-for-80 reverse stock split. The shares are expected to begin trading on a split-adjusted basis at market open on September 11 under the existing GOSS ticker.

Gossamer Bio is currently trading at $10.69, down from its previous close of $11.39 on the Nasdaq. The stock opened at $12.48 and has traded between a high of $12.52 and a low of $10.59. Trading volume stands at 72,371 shares, compared with an average volume of 342,464 shares.

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Under the reverse spli...