{"id":950146,"date":"2026-04-09T07:34:39","date_gmt":"2026-04-09T11:34:39","guid":{"rendered":"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/"},"modified":"2026-04-09T07:34:39","modified_gmt":"2026-04-09T11:34:39","slug":"shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately","status":"publish","type":"post","link":"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/","title":{"rendered":"Shareholders who lost money in Gossamer Bio, Inc (NASDAQ: GOSS) Should Contact Wolf Haldenstein Immediately"},"content":{"rendered":"<h2>\nLead Plaintiff Deadline June 1, 2026<br \/>\n<\/h2>\n<div class=\"mw_release\">\n<p align=\"justify\">NEW YORK, April  09, 2026  (GLOBE NEWSWIRE) &#8212; <a href=\"https:\/\/www.globenewswire.com\/Tracker?data=obfQaKZqjChHmv6AgATs_DU0-Jr1q_ZElnsrO7XI4aaxuwLIpzu4AW6E8vJ8wgxGMFeFnC0C8hmLgPOHdSM5QQXAUgS4ktzXw-bl4wVxdPc_mxLy8WK2pw463Lky9ILkIlaiw4OKCPBFufXTHKeLgg0VsGFWq4tQpTrSLEGct3g=\" rel=\"nofollow\" target=\"_blank\">Wolf Haldenstein Adler Freeman &amp; Herz LLP<\/a> announces that a class action lawsuit has been filed on behalf of shareholders who purchased or otherwise acquired Gossamer Bio, Inc. (\u201cGossamer\u201d or the \u201cCompany\u201d) (NASDAQ: GOSS) securities<br \/>between June 16, 2025 and February 20, 2026, inclusive (the \u201cClass Period\u201d).<\/p>\n<p align=\"justify\">\n        <strong>Investors have until June 1, 2026 to apply to the Court to be appointed as lead plaintiff in the lawsuit.<\/strong>\n      <\/p>\n<p align=\"center\">\n        <a href=\"https:\/\/www.globenewswire.com\/Tracker?data=z8WHgFaTKZR9tdyKb2hmKFrTZwm_Fiz9_tVkEtNMWQGi7z4VclZ8TG7Car3ElKeUUSjAFMmyK9A8FCgEpxgw6nQ4SzvGjFfxNyZpYGTYjMXgdU2aZK7xf5h2TIeGDFYbcS_44HyO36freTyu3dYTvC3TRKk2UhDTV6xoA710nR10K6y1ggz1hmdGMAXAK5Qo\" rel=\"nofollow\" target=\"_blank\"><br \/>\n          <strong>PLEASE CLICK HERE TO JOIN THE CASE AND SUBMIT CONTACT INFORMATION<\/strong><br \/>\n        <\/a>\n      <\/p>\n<p align=\"justify\">The filed complaint filed alleges that throughout the Class Period, Defendants made materially false and\/or misleading statements, as well as failed to disclose material adverse facts about the Company\u2019s business, operations, and prospects.<\/p>\n<p>Specifically, Defendants failed to disclose to investors that:<\/p>\n<ul type=\"disc\">\n<li style=\"text-align:justify\">patients at the Latin American sites were heavily-treated and lower risk and, ultimately, performed particularly well on the placebo, thus, Gossamer\u2019s Phase 3 PROSERA study failed to meet the primary endpoint of improved six-minute walk distance at week 24; and\n<\/li>\n<li style=\"text-align:justify\">as a result, Defendants\u2019 positive statements about the Company\u2019s business, operations, and prospects were materially misleading and\/or lacked a reasonable basis at all relevant times.\n<p><\/li>\n<\/ul>\n<p align=\"justify\">On February 23, 2026, Gossamer disclosed that results for its Phase 3 PROSERA study of seralutinib for the treatment of pulmonary arterial hypertension had failed to meet the primary endpoint, citing patients at Latin American sites performing particularly well on placebo due to enrollment of a heavily-treated lower-risk population.<\/p>\n<p>On this news, Gossamer\u2019s stock price fell $1.71, or 80.3%, to close at $0.42 per share on February 23, 2026<\/p>\n<p align=\"center\">\n        <a href=\"https:\/\/www.globenewswire.com\/Tracker?data=DBjNTLIAFqaQspXYjBhmxq87-hneaeALOmC1dpxlsC-BOt6fThxV4z32dSTNbP7bKgZpBf-5zd-TW_DEfiOtcRoNVmAuytK1FWxqQxQBBbBqKbrPcT4JTjGpuQX_1eT9yRywZabbQhi79Po_Y-k6IjaoxCQWI3TnQi2IdBQNTGE=\" rel=\"nofollow\" target=\"_blank\"><br \/>\n          <strong>Why Wolf Haldenstein Adler Freeman &amp; Herz LLP?:<\/strong><br \/>\n        <\/a>\n      <\/p>\n<p align=\"justify\">This illustrious <a href=\"https:\/\/www.globenewswire.com\/Tracker?data=etYWUgIS0qRHl8T_3CY7TrOm-mZAjEthD4YLetjTb9bSmzu6irxqogSLAKFj34qLeURt-WuBivB-WsNC15R4dRU_KdmJyzVQS4HOxdeuaws=\" rel=\"nofollow\" target=\"_blank\">firm,<\/a> founded in 1888, is steadfast in their pursuit of justice for investors who have suffered financial harm due to these misrepresented statements.\u00a0The <a href=\"https:\/\/www.globenewswire.com\/Tracker?data=3LzLSoeaCWq8j6JXdwCNmfLTjfsMfeFDpxLDiyen3Wppy9B-7g44N8HITbjcxlIa_lLildGJEQAbcs4CxYS31areSCWmBk9a_8uqNA8y-tToe23wkE-tOdKV8Xj8yBHy\" rel=\"nofollow\" target=\"_blank\">law firm\u00a0<\/a>brings to the fore over 125 years of legal expertise in securities litigation and has a proven track record of protecting the rights of investors.<\/p>\n<p align=\"justify\">We encourage all investors who have been affected or have information that will assist in our investigation, to contact\u00a0<a href=\"https:\/\/www.globenewswire.com\/Tracker?data=obfQaKZqjChHmv6AgATs_DU0-Jr1q_ZElnsrO7XI4aaxuwLIpzu4AW6E8vJ8wgxGqju1xuXDEQ1_bAcZjyOEi6JibyidH1poWs89DmyBz2Lb5Gga0pKtTDgnDapIFdf0fO8l-hm_POgT1CGwNLpSu0Heh8je-cDC-f78Jrx8ods=\" rel=\"nofollow\" target=\"_blank\">Wolf Haldenstein Adler Freeman &amp; Herz LLP.<\/a><\/p>\n<p>\n        <br \/>\n        <strong>There is no cost or obligation to speak with an attorney.<\/strong><br \/>\n        \n      <\/p>\n<p>\n        <strong>Contact:<\/strong>\n      <\/p>\n<ul type=\"disc\">\n<li style=\"margin-top:5pt;margin-bottom:5pt\">\n          <strong>Phone:<\/strong>\u00a0(800) 575-0735 or (212) 545-4774<\/li>\n<li style=\"margin-top:5pt;margin-bottom:5pt\">\n          <strong>Email:\u00a0<\/strong><br \/>\n          <a href=\"mailto:classmember@whafh.com\" rel=\"nofollow\" target=\"_blank\">classmember@whafh.com<\/a>\n        <\/li>\n<li style=\"margin-top:5pt;margin-bottom:5pt\">\n          <strong>Contact Person:<\/strong>\u00a0<a href=\"mailto:gstone@whafh.com\" rel=\"nofollow\" target=\"_blank\">Gregory Stone, Director of Case and Financial Analysis<\/a><\/p>\n<\/li>\n<\/ul>\n<p>\n        <strong>Firm Website:\u00a0<\/strong><br \/>\n        <a href=\"https:\/\/www.globenewswire.com\/Tracker?data=obfQaKZqjChHmv6AgATs_DU0-Jr1q_ZElnsrO7XI4aaxuwLIpzu4AW6E8vJ8wgxGgW7dNhOUGPkUtYhQ5F0siktCsAIuxilGl57ZKwMGyvMsLsSSvb5DCVfscyZL0TmrldYm8blFXxV5eV4zuXAWe_GvFb8YpOSjtNd6IE6vJ54=\" rel=\"nofollow\" target=\"_blank\">Wolf Haldenstein Adler Freeman &amp; Herz LLP<\/a>\n      <\/p>\n<p>This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules.<\/p>\n<p>      <img decoding=\"async\" alt=\"\" class=\"__GNW8366DE3E__IMG\" src=\"https:\/\/www.globenewswire.com\/newsroom\/ti?nf=OTY4Njg3NCM3NTI3Mzk5IzIwMTc2NzI=\" \/><br \/>\n      <br \/>\n      <img decoding=\"async\" alt=\"\" src=\"https:\/\/ml.globenewswire.com\/media\/ZjliOWYyOTAtNjFmZC00Yjk0LWI3NmQtMGZmY2RlMDBkOWY1LTEwMjkyNDItMjAyNi0wNC0wOS1lbg==\/tiny\/Wolf-Haldenstein-Adler-Freeman.png\" \/>\n    <\/div>\n<div class=\"mw_contactinfo\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Lead Plaintiff Deadline June 1, 2026 NEW YORK, April 09, 2026 (GLOBE NEWSWIRE) &#8212; Wolf Haldenstein Adler Freeman &amp; Herz LLP announces that a class action lawsuit has been filed on behalf of shareholders who purchased or otherwise acquired Gossamer Bio, Inc. (\u201cGossamer\u201d or the \u201cCompany\u201d) (NASDAQ: GOSS) securitiesbetween June 16, 2025 and February 20, 2026, inclusive (the \u201cClass Period\u201d). Investors have until June 1, 2026 to apply to the Court to be appointed as lead plaintiff in the lawsuit. PLEASE CLICK HERE TO JOIN THE CASE AND SUBMIT CONTACT INFORMATION The filed complaint filed alleges that throughout the Class Period, Defendants made materially false and\/or misleading statements, as well as failed to disclose material adverse facts about the Company\u2019s &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Shareholders who lost money in Gossamer Bio, Inc (NASDAQ: GOSS) Should Contact Wolf Haldenstein Immediately&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-950146","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Shareholders who lost money in Gossamer Bio, Inc (NASDAQ: GOSS) Should Contact Wolf Haldenstein Immediately - Market Newsdesk<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Shareholders who lost money in Gossamer Bio, Inc (NASDAQ: GOSS) Should Contact Wolf Haldenstein Immediately - Market Newsdesk\" \/>\n<meta property=\"og:description\" content=\"Lead Plaintiff Deadline June 1, 2026 NEW YORK, April 09, 2026 (GLOBE NEWSWIRE) &#8212; Wolf Haldenstein Adler Freeman &amp; Herz LLP announces that a class action lawsuit has been filed on behalf of shareholders who purchased or otherwise acquired Gossamer Bio, Inc. (\u201cGossamer\u201d or the \u201cCompany\u201d) (NASDAQ: GOSS) securitiesbetween June 16, 2025 and February 20, 2026, inclusive (the \u201cClass Period\u201d). Investors have until June 1, 2026 to apply to the Court to be appointed as lead plaintiff in the lawsuit. PLEASE CLICK HERE TO JOIN THE CASE AND SUBMIT CONTACT INFORMATION The filed complaint filed alleges that throughout the Class Period, Defendants made materially false and\/or misleading statements, as well as failed to disclose material adverse facts about the Company\u2019s &hellip; Continue reading &quot;Shareholders who lost money in Gossamer Bio, Inc (NASDAQ: GOSS) Should Contact Wolf Haldenstein Immediately&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/\" \/>\n<meta property=\"og:site_name\" content=\"Market Newsdesk\" \/>\n<meta property=\"article:published_time\" content=\"2026-04-09T11:34:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.globenewswire.com\/newsroom\/ti?nf=OTY4Njg3NCM3NTI3Mzk5IzIwMTc2NzI=\" \/>\n<meta name=\"author\" content=\"Newsdesk\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Newsdesk\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\\\/\"},\"author\":{\"name\":\"Newsdesk\",\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/#\\\/schema\\\/person\\\/482f27a394d4fda80ecb5499e519d979\"},\"headline\":\"Shareholders who lost money in Gossamer Bio, Inc (NASDAQ: GOSS) Should Contact Wolf Haldenstein Immediately\",\"datePublished\":\"2026-04-09T11:34:39+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\\\/\"},\"wordCount\":409,\"image\":{\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.globenewswire.com\\\/newsroom\\\/ti?nf=OTY4Njg3NCM3NTI3Mzk5IzIwMTc2NzI=\",\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\\\/\",\"url\":\"https:\\\/\\\/www.marketnewsdesk.com\\\/index.php\\\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\\\/\",\"name\":\"Shareholders who lost money in Gossamer Bio, Inc (NASDAQ: GOSS) Should Contact Wolf Haldenstein Immediately - 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(\u201cGossamer\u201d or the \u201cCompany\u201d) (NASDAQ: GOSS) securitiesbetween June 16, 2025 and February 20, 2026, inclusive (the \u201cClass Period\u201d). Investors have until June 1, 2026 to apply to the Court to be appointed as lead plaintiff in the lawsuit. PLEASE CLICK HERE TO JOIN THE CASE AND SUBMIT CONTACT INFORMATION The filed complaint filed alleges that throughout the Class Period, Defendants made materially false and\/or misleading statements, as well as failed to disclose material adverse facts about the Company\u2019s &hellip; Continue reading \"Shareholders who lost money in Gossamer Bio, Inc (NASDAQ: GOSS) Should Contact Wolf Haldenstein Immediately\"","og_url":"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/","og_site_name":"Market Newsdesk","article_published_time":"2026-04-09T11:34:39+00:00","og_image":[{"url":"https:\/\/www.globenewswire.com\/newsroom\/ti?nf=OTY4Njg3NCM3NTI3Mzk5IzIwMTc2NzI=","type":"","width":"","height":""}],"author":"Newsdesk","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Newsdesk","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/#article","isPartOf":{"@id":"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/"},"author":{"name":"Newsdesk","@id":"https:\/\/www.marketnewsdesk.com\/#\/schema\/person\/482f27a394d4fda80ecb5499e519d979"},"headline":"Shareholders who lost money in Gossamer Bio, Inc (NASDAQ: GOSS) Should Contact Wolf Haldenstein Immediately","datePublished":"2026-04-09T11:34:39+00:00","mainEntityOfPage":{"@id":"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/"},"wordCount":409,"image":{"@id":"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/#primaryimage"},"thumbnailUrl":"https:\/\/www.globenewswire.com\/newsroom\/ti?nf=OTY4Njg3NCM3NTI3Mzk5IzIwMTc2NzI=","inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/","url":"https:\/\/www.marketnewsdesk.com\/index.php\/shareholders-who-lost-money-in-gossamer-bio-inc-nasdaq-goss-should-contact-wolf-haldenstein-immediately\/","name":"Shareholders who lost money in Gossamer Bio, Inc (NASDAQ: GOSS) Should Contact Wolf Haldenstein Immediately - 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