TOP TIERMARKET NEWSWIRE
Movers explained · July 30, 2026

Why Is GOSSAMER BIO INC (GOSS) Stock Moving Today?

By the Top Tier Newswire AI Desk · July 28, 2026 at 5:14 AM ET · reviewed against 1 wire stories

GOSSAMER BIO INC (GOSS) is drawing unusual attention today. Our newswire has captured 1 story on GOSS across 1 source in the last 36 hours, with AI sentiment reading bullish (avg 73/100).

Why GOSS stock is moving today

Gossamer Bio (GOSS) shares are rising today following key developments regarding the regulatory path for its lead drug candidate, seralutinib, and the reacquisition of global rights to the therapy. The company announced that the FDA has outlined a potential timeline for a September 2026 New Drug Application (NDA) filing. Additionally, Gossamer Bio has regained full control of seralutinib, which is expected to enhance its strategic flexibility and strengthen its capital position.

What Happened

The company filed a Form 8-K with the SEC on July 27, 2026, disclosing the reacquisition of worldwide rights to seralutinib and outlining a clear regulatory path forward. This development follows feedback from the FDA, which has provided guidance that could lead to an NDA submission by September. Leerink upgraded the stock rating based on this regulatory progress. The company also announced a restructuring of its debt and secured major investor approvals, which contributed to the positive market reaction.

What The Data Shows

GOSS has a market cap of $66.5 million and has been unprofitable, with a trailing twelve-month (TTM) net margin of -324.8% and an EPS of -0.78. The stock has declined by 17.0% over the last 8 trading sessions, moving from $0.22 to $0.18. Its 52-week range is between $0.11 and $3.87. The stock has a beta of 2.04, indicating higher volatility compared to the market. The recent news appears to have shifted investor sentiment, with the stock showing strength after the announcements.

What To Watch

The company has not provided an upcoming earnings date. Investors should monitor the breadth of coverage and any further regulatory updates related to seralutinib as the FDA timeline unfolds.

AI-assisted analysis composed exclusively from headlines and data on the Top Tier newswire. Not financial advice.

GOSS by the numbers

7 sessions: -16.95%Coverage: 1 stories / 1 sourcesAI sentiment: 73/100 (bullish)Mkt cap: $66M52w: $0.11 to $3.87
GOSS · Jul 28 session (5-min) · +2.61% vs prior close · updated 8:49 PM ET
$0.19$0.25$0.32prev close $0.20$0.207:00 AM10:13 AM1:27 PM4:41 PM7:55 PM7:00 AM · $0.267:05 AM · $0.257:10 AM · $0.267:15 AM · $0.267:20 AM · $0.267:25 AM · $0.267:30 AM · $0.267:35 AM · $0.277:40 AM · $0.277:45 AM · $0.277:50 AM · $0.277:55 AM · $0.278:00 AM · $0.318:05 AM · $0.298:10 AM · $0.308:15 AM · $0.298:20 AM · $0.288:25 AM · $0.288:30 AM · $0.288:35 AM · $0.278:40 AM · $0.278:45 AM · $0.278:50 AM · $0.278:55 AM · $0.269:00 AM · $0.279:05 AM · $0.269:10 AM · $0.279:15 AM · $0.269:20 AM · $0.269:25 AM · $0.279:30 AM · $0.239:35 AM · $0.239:40 AM · $0.249:45 AM · $0.249:50 AM · $0.239:55 AM · $0.2310:00 AM · $0.2210:05 AM · $0.2210:10 AM · $0.2210:15 AM · $0.2210:20 AM · $0.2210:25 AM · $0.2110:30 AM · $0.2110:35 AM · $0.2110:40 AM · $0.2110:45 AM · $0.2210:50 AM · $0.2110:55 AM · $0.2111:00 AM · $0.2111:05 AM · $0.2111:10 AM · $0.2111:15 AM · $0.2211:20 AM · $0.2211:25 AM · $0.2111:30 AM · $0.2111:35 AM · $0.2111:40 AM · $0.2311:45 AM · $0.2211:50 AM · $0.2211:55 AM · $0.2112:00 PM · $0.2112:05 PM · $0.2112:10 PM · $0.2112:15 PM · $0.2112:20 PM · $0.2112:25 PM · $0.2012:30 PM · $0.2012:35 PM · $0.2012:40 PM · $0.2012:45 PM · $0.2012:50 PM · $0.2112:55 PM · $0.201:00 PM · $0.201:05 PM · $0.201:10 PM · $0.201:15 PM · $0.211:20 PM · $0.211:25 PM · $0.201:30 PM · $0.211:35 PM · $0.211:40 PM · $0.201:45 PM · $0.201:50 PM · $0.201:55 PM · $0.202:00 PM · $0.202:05 PM · $0.202:10 PM · $0.202:15 PM · $0.192:20 PM · $0.192:25 PM · $0.202:30 PM · $0.202:35 PM · $0.192:40 PM · $0.192:45 PM · $0.192:50 PM · $0.192:55 PM · $0.203:00 PM · $0.203:05 PM · $0.203:10 PM · $0.203:15 PM · $0.203:20 PM · $0.193:25 PM · $0.203:30 PM · $0.203:35 PM · $0.203:40 PM · $0.203:45 PM · $0.193:50 PM · $0.203:55 PM · $0.214:00 PM · $0.204:05 PM · $0.214:10 PM · $0.204:15 PM · $0.204:20 PM · $0.204:25 PM · $0.204:30 PM · $0.204:35 PM · $0.204:40 PM · $0.204:45 PM · $0.204:50 PM · $0.204:55 PM · $0.205:00 PM · $0.205:05 PM · $0.205:10 PM · $0.215:15 PM · $0.215:20 PM · $0.235:25 PM · $0.225:30 PM · $0.225:35 PM · $0.225:40 PM · $0.225:45 PM · $0.215:50 PM · $0.215:55 PM · $0.216:00 PM · $0.216:05 PM · $0.216:10 PM · $0.216:15 PM · $0.216:20 PM · $0.216:25 PM · $0.226:30 PM · $0.216:35 PM · $0.216:40 PM · $0.216:45 PM · $0.216:50 PM · $0.216:55 PM · $0.217:00 PM · $0.217:05 PM · $0.217:10 PM · $0.217:15 PM · $0.207:20 PM · $0.207:25 PM · $0.207:30 PM · $0.207:35 PM · $0.207:40 PM · $0.207:45 PM · $0.207:50 PM · $0.217:55 PM · $0.20
AI sentiment, last 36h · averaged over 1 story · 73/100 bullish
AI sentiment 73/100 (bullish)0 · bearish50bullish · 100

The headlines behind the move

2d agoYahoo TopBULLISH 73General

Gossamer Bio shares jump after FDA update and seralutinib rights return

Gossamer Bio Inc. (NASDAQ:GOSS) shares surged 25% on Monday after the biotechnology company provided a positive regulatory update on its lead drug candidate, seralutinib, and announced it had regained full global rights to the therapy.

Frequently asked questions

Why is GOSS stock moving today?

GOSSAMER BIO INC (GOSS) is drawing unusual attention today. Our newswire has captured 1 story on GOSS across 1 source in the last 36 hours, with AI sentiment reading bullish (avg 73/100). The most recent driver: "Gossamer Bio shares jump after FDA update and seralutinib rights return" (Yahoo Top).

Is GOSS a buy right now?

Top Tier Newswire does not give financial advice. Our AI sentiment across the last 36 hours of GOSS coverage reads 73/100 over 1 stories; treat it as a research signal and do your own diligence.

How fast does this page update?

The data sections refresh continuously as the newswire lands coverage; the written analysis is published once per trading day. Pro subscribers additionally get real-time push alerts, watchlists, and the full live terminal.

More moves explained today

Want the next move before the crowd? The live terminal streams every headline in real time with watchlist alerts, AI sentiment, and the full data stack behind this page.Get Pro Access →

More on GOSS: full news and sentiment history. Sentiment scores are AI-derived research signals, not financial advice.

Earlier GOSS move explainers: 2026-07-28 · 2026-07-27