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SEPN
NASDAQ Life Sciences

Septerna's SEP-631 Shows Strong Phase 1 Safety, Advancing to Phase 2 for Mast Cell Diseases

Tom Rudovsky · Reported by Reuters
More coverage: Biotech Stocks · Healthcare
Sentiment info
Positive
Importance info
8
Price
$29.02
Mkt Cap
$1.299B
52W Low
$4.66
52W High
$32.63
52W Position info
523% above low
Off High info
11% below high
Rel. Volume info
1.4× avg
Market data snapshot near publication time

SEPN has more than doubled off its 52-week low of $4.66.

Summary

Septerna announced positive Phase 1 clinical trial data for its oral drug candidate, SEP-631, targeting mast cell-driven diseases. The study showed SEP-631 was well-tolerated, with an adverse event profile comparable to placebo, indicating a strong safety profile. This is a significant de-risking event for the company, as positive safety data is crucial for advancing drug candidates. Septerna plans to initiate Phase 2 development for chronic spontaneous urticaria in 2026, which will be the next key catalyst for the stock.

At the time of this announcement, SEPN was trading at $29.02 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $1.3B. The 52-week trading range was $4.66 to $32.63. This news item was assessed with positive market sentiment and an importance score of 8 out of 10. Source: Reuters.


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SEPN - Latest Insights

SEPN
Jun 22, 2026, 4:16 PM EDT
Filing Type: 144
Importance Score:
7
Price at Filing: $34.85
Real-time Price: $33.29 info
Change: -$1.56 (-4%) info
Market Cap: $1.531B info
SEPN
May 11, 2026, 4:08 PM EDT
Filing Type: 10-Q
Importance Score:
8
Price at Filing: $23.57
Real-time Price: $33.29 info
Change: +$9.72 (+41%) info
Market Cap: $1.531B info
SEPN
May 11, 2026, 4:05 PM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $23.57
Real-time Price: $33.29 info
Change: +$9.72 (+41%) info
Market Cap: $1.531B info
SEPN
Apr 13, 2026, 8:30 AM EDT
Filing Type: 8-K
Importance Score:
8
Price at Filing: $23.09
Real-time Price: $33.29 info
Change: +$10.20 (+44%) info
Market Cap: $1.531B info
SEPN
Apr 13, 2026, 8:00 AM EDT
Source: GlobeNewswire
Importance Score:
7
Price at Filing: $23.09
Real-time Price: $33.29 info
Change: +$10.20 (+44%) info
Market Cap: $1.531B info